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Optimizing green waste composting with iron-based Fenton-like process Bioresource Technol. (IF 9.7) Pub Date : 2024-09-18 Wenjing Xiao, Lu Zhang
The presence of refractory lignocellulose presents a significant challenge in green waste (GW) composting. This research applied both a conventional iron-based Fenton-like process (with a Fenton-like reagent composed of 1.0 % Fe3O4 nanoparticles and 1.0 % H2O2) and three modified iron-based Fenton-like processes (with a Fenton-like reagent composed of 1.0 % Fe3O4 nanoparticles and 1.0 % oxalic acid/1
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Design of experiment approach to boost volatile production from kiwi byproducts Bioresource Technol. (IF 9.7) Pub Date : 2024-09-18 Jasmine Hadj Saadoun, Lorenzo Del Vecchio, Luca Bettera, Luca Fontechiari, Francesco Martelli, Annalisa Ricci, Alessia Levante, Elena Bancalari, Martina Cirlini, Camilla Lazzi
Design of Experiments (DoE), is a tool to explore relationships between factors and responses of a system. DoE and response surface methodology are increasingly used in different fields, but their application are limited in the valorization of residual biomass and agro-industrial by-products. Agro-industrial biomass residues can be eco-friendly converted into high-value compounds through bioprocesses
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Bacterial specialists playing crucial roles in maintaining system stability and governing microbial diversity in bioremediation of oil-polluted sediments under typical deep-sea condition Bioresource Technol. (IF 9.7) Pub Date : 2024-09-18 Yanlu Qiao, Wenhui Xu, Lingbing Kong, Mingan Shen, Shuo Wang, Yudi Sun, Yu Gao, Qing Jiang, Jianliang Xue, Dongle Cheng, Yuyang Liu
Ecologically, interactions and contributions of microbiota generalists and specialists remain largely unexplored in remediation of deep-sea oil pollution. Herein, ecological and evolutionary characteristics of the two taxa were comprehensively investigated in restoration of oil-polluted sediment at deep-sea microcosm. Niche-specialized taxa exhibited rapid speciation rate, more complex network structure
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Formation mechanism of lignin-derived carbon quantum dots: From chemical structures to fluorescent behaviors Bioresource Technol. (IF 9.7) Pub Date : 2024-09-15 Lingli Zhu, Hao Wu, Hongmin Yang, Dekui Shen, Haitao Hu, Mengjia Dou
Biomass-derived carbon quantum dots (CQDs) have the advantage of being green and low-cost, but their complex structure makes the study of their formation mechanism encounter a bottleneck. Lignin-derived CQDs were prepared by a two-step process of “low-temperature liquid depolymerization” coupled with “hydrothermal reaction” in a mild organic acid system. In the first step of the low-temperature acidolysis
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High efficiency production of 5-hydroxyectoine Zusing metabolically engineered Escherichia coli Bioresource Technol. (IF 9.7) Pub Date : 2024-09-14 Zhijie Qin, Lihong Li, Weizhu Zeng, Hongbiao Li, Jingwen Zhou, Sha Xu
The 5-hydroxyectoine is a natural protective agent with long-lasting moisturising and radiation resistance properties. It can be naturally synthesized by some extremophiles using the “bacterial milking” process, but this can corrode bioreactors and downstream purification may cause environmental pollution. In this study, an engineered Escherichia coli (E. coli) strain was constructed for the 5-hydroxyectoine
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Algal carbohydrates: Sources, biosynthetic pathway, production, and applications Bioresource Technol. (IF 9.7) Pub Date : 2024-09-14 Pradip Sarkar, Tarun Kanti Bandyopadhyay, Konga Gopikrishna, Onkar Nath Tiwari, Biswanath Bhunia, Muthusivaramapandian Muthuraj
Algae play a significant role in the global carbon cycle by utilizing photosynthesis to efficiently convert solar energy and atmospheric carbon dioxide into various chemical compounds, notably carbohydrates, pigments, lipids, and released oxygen, making them a unique sustainable cellular factory. Algae mostly consist of carbohydrates, which include a broad variety of structures that contribute to their
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Outstanding enhancement of caproate production with microwave pyrolyzed highly reductive biochar addition Bioresource Technol. (IF 9.7) Pub Date : 2024-09-14 Qinglian Wu, Lin Deng, Tian Lan, Hui Wang, Kaiming Wang, Huacheng Zhu, Yanping Zhou, Wanqian Guo
The integration of biochar into microbial Chain Elongation (CE) proves to be an effective tool of producing high-value bio-based products. This study innovatively applied biochar fabricated under microwave irradiation with carbon fiber cloth assistance into CE system. Results highlighted that microwave biochar achieved maximal CE efficiency yielding 8 g COD/L, with 3-fold increase to the blank group
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Degradation of nitrocellulose film under aerobic conditions by a newly isolated Rhodococcus pyridinivorans strain Bioresource Technol. (IF 9.7) Pub Date : 2024-09-13 Juan Huang, Alei Zhang, Qi Yang, Yajun Ding, Zhongliang Xiao
The explosive and biorefractory nature of nitrocellulose (NC) poses major risks to both humans and the environment. Expanding the range of microorganisms capable of degrading NC is essential, though the most effective known microorganisms, genera and , achieve degradation rates of 5%-25%. Here, a novel strain, LZ1 was isolated, demonstrating the ability to degrade NC, with its growth potentially enhanced
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Critical impact of pressure regulation on carbon dioxide biosynthesis Bioresource Technol. (IF 9.7) Pub Date : 2024-09-13 Yanqing Zhang, Yuxiang Liang, Hai Xiang, Pingli Li, Dongqing Zhan, Danna Ding, Shuangwei Du, Yangcheng Ding, Wen Liu, Xiawen Qiu, Huajun Feng
Carbon dioxide (CO) biosynthesis is a promising alternative to traditional chemical synthesis. However, its application in engineering is hampered by poor gas mass transfer rates. Pressurization is an effective method to enhance mass transfer and increase synthesis yield, although the underlying mechanisms remain unclear. This review examines the effects of high pressure on CO biosynthesis, elucidating
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An assessment of the autotrophic/heterotrophic synergism in microalgae under mixotrophic mode and its contribution in high-rate phosphate recovery from wastewater Bioresource Technol. (IF 9.7) Pub Date : 2024-09-13 Rabail Zulekha, Muhammad Mubashar, Muhammad Muzamil Sultan, Zimin Wang, Jing Li, Xuezhi Zhang
Dual carbon metabolisms and the synergism contribute to improving nutrient recovery under mixotrophy. However, how synergism influences nutrient recovery has yet to be understood, which is revealed in the current study. Due to dual carbon metabolisms and synergism,the PO-P recovery rate under mixotrophy reached 0.34 mg L h. Due to the internal cycling of respiratory CO, the mutualistic index (MI) in
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Electron-deficient wastewater treatment in membrane-aerated conductive biofilm reactor: Performance and mechanism Bioresource Technol. (IF 9.7) Pub Date : 2024-09-12 Weijia Gong, Han Zhang, Minghao Xue, Lin Guo, Mengmeng Jiang, Yuzhou Zhao, Heng Liang
A membrane-aerated conductive biofilm reactor (MA-CBR) was constructed for carbon-limited wastewater treatment and to reduce the stress of the electric field on nitrous oxide reductase (. Counter-diffusion with an embedded aerobic layer declined the effect of current on (K00376) for NO reduction. Other coding genes for denitrification in cathodic membrane aerated biofilms, including , , , , and , were
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Different bioaugmentation regimes that mitigate ammonium/salt inhibition in repeated batch anaerobic digestion: Generic converging trend of microbial communities Bioresource Technol. (IF 9.7) Pub Date : 2024-09-12 Zi-Yan Li, Shintaro Nagao, Daisuke Inoue, Michihiko Ike
Bioaugmentation regimes (i.e., dosage, repetition, and timing) in AD must be optimized to ensure their effectiveness. Although previous studies have investigated these aspects, most have focused exclusively on short-term effects, with some reporting conflicting conclusions. Here, AD experiments of three consecutive repeated batches were conducted to determine the effect of bioaugmentation regimes under
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Removal and recovery of nitrogen from anaerobically treated leachate based on a neglected HNAD nitrogen removal pathway: NH3 stripping Bioresource Technol. (IF 9.7) Pub Date : 2024-09-12 Facai An, Yunfei Gao, Maomin Yu, Tianxiao Xiao, Hui Lin, Dezhi Sun
The heterotrophic nitrification aerobic denitrification (HNAD) process can withstand the environment with high NH-N concentration and complex components, and has the potential to be an effective scheme for nitrogen removal of anaerobically treated leachate from municipal solid waste incineration plant. But its mechanism is still unclear and the NH stripping process has received little attention. At
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Microbial community dynamics in different floc size aggregates during nitrogen removal process upgrading in a full-scale landfill leachate treatment plant Bioresource Technol. (IF 9.7) Pub Date : 2024-09-12 Binbin Sheng, Shitong Liu, Kenan Xiong, Jiaming Liu, Shuang Zhu, Rongxin Zhang
Upgrading processes to reduce biodegradable organic substance addition is crucial for treating landfill leachate with high pollutant concentrations, aiding carbon emission reduction. Aggregate size in activated sludge processes impacts pollutant removal and sludge/water separation. This study investigated microbial community succession and driving mechanisms in different floc-size aggregates during
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Tetracycline removal by immobilized indigenous bacterial consortium using biochar and biomass: Removal performance and mechanisms Bioresource Technol. (IF 9.7) Pub Date : 2024-09-12 Xinping Yu, Mohan Bai, Xiaojing Li, Pinpin Yang, Qiuzhen Wang, Zhennan Wang, Liping Weng, Huike Ye
The significant influx of antibiotics into the environment represents ecological risks and threatens human health. Microbial degradation stands as a highly effective method for reducing antibiotic pollution. This study explored the potential of immobilized microbial consortia to efficiently degrade tetracycline. Concurrently, the suitability of different immobilization materials were assessed, with
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Recovery of purple non-sulfur bacteria-mediated single-cell protein from domestic wastewater in two-stage treatment using high rate digester and raceway pond Bioresource Technol. (IF 9.7) Pub Date : 2024-09-12 Manikanta M. Doki, Arun Kumar Mehta, Debkumar Chakraborty, Makarand M. Ghangrekar, Brajesh K. Dubey, Abbas Alloul, Ali Moradvandi, Siegfried E. Vlaeminck, Ralph E.F. Lindeboom
Wastewater resources can be used to produce microbial protein for animal feed or organic fertiliser, conserving food chain resources. This investigation hasemployed thefermented sewage to photoheterotrophically grown purple non-sulfur bacteria (PNSB) in a 2.5 m pilot-scaleraceway-pond with infrared light to produce proteinaceous biomass. Fermented sewage with synthetic media consisting of sodium acetate
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Quinolone antibiotics stimulate bacterial mercury methylation by Geobacter metallireducens GS-15 Bioresource Technol. (IF 9.7) Pub Date : 2024-09-12 Fang Fang, Lingyun Ding, Yaoyu Zhang, Zhishan Huang, Ningning He, Lele Zhang, Ming Hung Wong, Bin Pi, Nan Xu, Huchun Tao, Lijuan Zhang
Bacterial mercury (Hg) methylation is critical for bioremediating Hg pollution, but the impact of emerging antibiotics on this process has rarely been reported. This study innovatively investigated the interactions between Hg-methylating bacteria of GS-15 and two quinolone antibiotics: lomefloxacin (LOM) and ciprofloxacin (CIP) at 5 μg/L. Short-term LOM exposure increased methylmercury (MeHg) yield
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Two-stage seeding strategy and its multi-response optimization for enhanced xylitol production by Debaryomyces nepalensis NCYC 3413 Bioresource Technol. (IF 9.7) Pub Date : 2024-09-12 Saivi Singh, Sathyanarayana N. Gummadi
The aim was to develop a two-stage seeding strategy and its optimization to enhance the conversion of xylose to xylitol by NCYC 3413. To develop efficient seed, multi-response optimization was employed to obtain optimal inoculum age and volume where xylitol concentration, yield and productivity were maximized. The optimal conditions of inoculation age and volume were 5.86 h and 11.66 % (v/v), respectively
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Gamma-aminobutyric acid as a regulator of astaxanthin production in Haematococcus lacustris under salinity: Exploring physiology, signaling, autophagy, and multi-omics landscape Bioresource Technol. (IF 9.7) Pub Date : 2024-09-12 Qingqing Li, Xiang Wang, Yajun Teng, Xuya Yu, Yongteng Zhao
-derived natural astaxanthin has significant commercial value, but stressful conditions alone impair cell growth and reduce the total productivity of astaxanthin in industrial settings. This study used gamma-aminobutyric acid (GABA) to increase biomass, astaxanthin productivity, and tolerance to salinity. GABA under NaCl stress enhanced the biomass to 1.76 g/L, astaxanthin content to 30.37 mg g, and
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Microbial fuel cell-assisted composting shows stronger capacity to immobilize phosphorus: Emphasized on bacterial structures and functional enzymes Bioresource Technol. (IF 9.7) Pub Date : 2024-09-12 Hu Cui, Lei Li, Hao Zhou, Wei-Jun Zhang, Xiao-Hu Dai, Hui Zhu
Limited scientific evidence exists on phosphorus immobilization under autogenetic electrochemical reactions in composting systems. This study exploited a composting procedure using microbial fuel cell (MFC) to ascertain phosphorus redistribution during composting process. Compared to the control without MFC equipment, MFC-assisted treatment yielded a 13 % decrease in phosphorus availability due to
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Positive effects of appropriate micro-aeration on landfill stabilization: Mitigating ammonia and VFAs accumulation Bioresource Technol. (IF 9.7) Pub Date : 2024-09-11 Kaili Liu, Weiguang Li, Duoying Zhang, Longyi Lv, Guangming Zhang
The slow stabilization process of landfill had brought obstacles to urbanization. The paper investigated the efficacy and mechanism of micro-aeration intensity for landfill stabilization. The micro-aeration intensity of 0.05 L/(h·kg) resulted in a significant increase of volatile fatty acids (VFAs) in the hydrolysis stage, and the NH-N concentration was reduced by 22.1 %. At the end of landfill, VFAs
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Establishment of efficient system for bagasse bargaining: Combining fractionation of saccharides, recycling of high-viscosity solvent and dismantling Bioresource Technol. (IF 9.7) Pub Date : 2024-09-11 Yihan Li, Xiheng Kang, Zi You, Tieguang He, Tianming Su, Junhua Zhang, Xinshu Zhuang, Zhanying Zhang, Arthur J. Ragauskas, Xueping Song, Kai Li
Sugarcane bagasse (SCB) has a recalcitrant structure, which hinders its component dismantling and subsequent high value utilization. Some organic solvents are favorable to dismantle lignocellulose, but their high viscosity prevents separation of components and reuse of solvents. Herein, ethylene glycol phenyl ether (EGPE)-acid system is used as an example to develop green and efficient methods to dismantle
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Enhanced degradation of exogenetic citrinin by glycosyltransferases in the oleaginous yeast Saitozyma podzolica zwy-2-3 Bioresource Technol. (IF 9.7) Pub Date : 2024-09-11 Qingzhuoma Yang, Shengtao Guo, Yulu Ran, Jie Zeng, Dairong Qiao, Hui Xu, Yi Cao
The contamination by the toxin citrinin (CIT), produced by fungi, has been reported in agricultural foods and is known to be nephrotoxic to humans. In this study, we found that CIT could be effectively degraded by the oleaginous yeast zwy-2-3. Four genes encoding glycosyltransferases (GTs) in zwy-2-3 () were identified by evolutionary and structural analyses. The overexpression of enhanced CIT degradation
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Bioconversion of pure CO2 to caproic acid with zero valent iron: Optimizing carbon flux distribution in co-cultures of Acetobacterium woodii and Megasphaera hexanoica Bioresource Technol. (IF 9.7) Pub Date : 2024-09-10 Zeyu Wang, Jun Chen, María C. Veiga, Christian Kennes
and were co-cultured for caproic acid (CA) production from lactic acid (LA) and CO. Also, various concentrations (1 g/L, 3 g/L, 5 g/L, and 10 g/L) of Zero Valent Iron (ZVI) were supplied to study its impact on the co-culture system. In flask experiments, 10 g/L LA and 1.0 bar CO produced 0.6 g/L CA with some biomass growth. ZVI increased LA consumption and CA production. Indeed, 3 g/L ZVI boosted CA
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Improved humification and Cr(VI) immobilization by CaO2 and Fe3O4 during composting Bioresource Technol. (IF 9.7) Pub Date : 2024-09-10 Li Chen, Zhigang Yi, Yaoning Chen, Yuanping Li, Hongjuan Jiang, Jun Wang, Yanrong Chen, Yaoqin Nie, Mengwei Luo, Qianruyu Wang, Wei Zhang, Yanting Wu
The current research studied how FeO nanomaterials (NMs) and CaO affect humification and Cr(VI) immobilization and reduction during the composting of oil-tea Camellia meal and Cr-contaminated soil. The results showed that FeO NMs and CaO successfully construct a Fenton-like reaction in this system. The excitation-emission matrix-parallel factor (EEM-PARAFAC) demonstrated that this Fenton-like treatment
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Selective regulation of products for guaiacol hydrodeoxygenation by adjusting type and acidity of supports Bioresource Technol. (IF 9.7) Pub Date : 2024-09-10 Min Lin, Daxin Jiang, Yuhao Yan, Lulu Zhan, Xianliang Song, Rui Li, Yulong Wu
Upgrading lignin-oil into advanced fuels or chemicals has been widely studied in recent years. To understand the effect of support type and acidity on the hydrodeoxygenation (HDO) of guaiacol (lignin-oil model compound), Ni-based catalysts were prepared with SiO, AlO and ZSM-5 as supports, respectively. The catalysts were characterized by X-ray diffraction (XRD), N adsorption desorption, X-ray photoelectron
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Highly efficient bio-production of putrescine from L-arginine with arginase and L-ornithine decarboxylase in engineered Escherichia coli Bioresource Technol. (IF 9.7) Pub Date : 2024-09-10 Jing Wang, Min Du, Xin Wang, Junchen He, Alei Zhang, Kequan Chen
To achieve industrial-scale putrescine production, a high efficient bio-synthesis of putrescine involving arginase (ARG, EC 3.5.3.1) and L-ornithine decarboxylase was evaluated here. Among the four arginases tested, ARG from showed the highest activity (1966 U/mg). Compared to the L-arginine decarboxylase (ADC) pathway, the strain expressing ARG and L-ornithine decarboxylase (SpeC) produced 28.7 g/L
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Saturated dissolved oxygen-driven high-rate and ultrastable partial nitrification in municipal wastewater Bioresource Technol. (IF 9.7) Pub Date : 2024-09-10 Qiongpeng Dan, Xiyao Li, Fangzhai Zhang, Rui Du, Jialin Li, Tong Wang, Qiong Zhang, Yongzhen Peng
Achieving stable and high-rate partial nitrification (PN) remains a worldwide technical conundrum in low-strength mainstream conditions. This study successfully achieved ultrarapid mainstream PN within 8 days under a saturated dissolved oxygen (DO) supply strategy, reaching a record-breaking PN rate of over 1.0 kg N m d treating municipal wastewater. Stable PN was maintained for over 200 days with
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Novel stationary basket reactor for effective biomass delignification with deep eutectic solvent Bioresource Technol. (IF 9.7) Pub Date : 2024-09-10 Agata Wawoczny, Katarzyna Szymańska, Danuta Gillner
Biomass pretreatment and conversion are crucial for sustainable development, but lack information on equipment that ensures effective mass transfer and easy biomass separation post-process. This work introduces a novel basket reactor with a stationary bed (StatBioChem) for biomass processing using deep eutectic solvents (DESs). We compared the delignification efficiencies of soft and hard biomass samples
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High efficiency removal of antibiotic resistance gene with designer zinc-finger protein Bioresource Technol. (IF 9.7) Pub Date : 2024-09-10 Jianghao Yu, Meng Fang, Lulu Shi, Jiaming Zhu, Chengzhang Fu, Youming Zhang, Hai Xu, Ling Li, Yu Shen, Mingyu Wang
The use of agricultural biomass-based fertilizers, and the release of feces into the environment leads to last-lasting pollution of antibiotic resistance genes that cannot be removed from waters via traditional methods, resulting in significant health threats. To solve this issue, an antibiotic resistance gene removal method was proposed and tested that used sequence-specific DNA-binding designer zinc
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Soy whey and brewer’s spent grain hydrolysates wholly replace conventional medium for microalgae growth: Process performance and economic considerations Bioresource Technol. (IF 9.7) Pub Date : 2024-09-08 Mei Zhi Alcine Chan, Vivian Jing Han Hau, Byron Perez, Iris Haberkorn, Alexander Mathys, Shao-Quan Liu
To enhance circularity in heterotrophic microalgal bioprocesses, this study completely substituted glucose and Bold’s basal medium (BBM) with brewer’s spent grain (BSG) and soy whey (SW) hydrolysates. Mild acid hydrolysis conditions of BSG (0.2 M H2SO4, 130 °C, 36 min) and SW (0.1 M HCl, 95 °C, 30 min) were optimised for glucose release, and their hydrolysates were optimally mixed (15 % SW-85 % BSG)
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High terephthalic acid purity: Effective polyethylene terephthalate degradation process based on pH regulation with dual-function hydrolase Bioresource Technol. (IF 9.7) Pub Date : 2024-09-08 Yu Zhou, Jiaxing Zhang, Shengping You, Wei Lin, Baoyu Zhang, Mengfan Wang, Rongxin Su, Wei Qi
Eco-friendly enzymatic-recycling has been widely utilized in tackling plastic pollution. However, the limited activity on the polyethylene terephthalate (PET) degradation product mono-hydroxyethyl terephthalate (MHET) leads to the formation of heterogeneous hydrolysis products, resulting in PET downcycling. Herein, by applying a dual-function PET hydrolase PETase with balanced PET and MHET degradation
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Pilot-scale study of enhanced thermophilic anaerobic digestion of food waste with the addition of trace elements Bioresource Technol. (IF 9.7) Pub Date : 2024-09-08 Yang Li, Wei Qiao, Guoli Zhao, Zhiyue Wu, Pengwu Jiang, Renjie Dong
Thermophilic anaerobic digestion (AD) offers many benefits for food waste treatment but is seldom adopted in industrial plants due to instability issue, particularly under higher loading conditions. This study thus conducted a 160-day continuous operation of a pilot-scale thermophilic AD system on-site. Results from the experiments showed that the system could operate under relatively lower loading
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Development and challenges of emerging biological technologies for algal-bacterial symbiosis systems: A review Bioresource Technol. (IF 9.7) Pub Date : 2024-09-08 Zhijun Ren, Huixue Li, Peng Sun, Ruiyao Fu, Zijia Bai, Guangming Zhang, Li Sun, Yanjie Wei
The algal-bacterial symbiosis system (ABSS) is considered as a sustainable wastewater treatment process. This review provides a comprehensive overview of the mechanisms of ABSS for the removal of common pollutant, heavy metals, and especially for emerging pollutants. For the macroscopical level, this review not only describes in detail the reactor types, influencing factors, and the development of
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Transport and retention mechanisms of highly suspended biochar in aquifer media Bioresource Technol. (IF 9.7) Pub Date : 2024-09-07 Chongkai Zhao, Xueyu Lin, Xiaosi Su, Jinlong Qian, Shengyu Zhang
Biochar-based in-situ reaction zones are promising methods for groundwater remediation. However, the transport and retention of biochar in aquifer media remain unclear. Herein, biochar with high suspensibility was developed through nitrogen doping. A linear regression was used to analyze the relationship between particle size, concentration, time, and suspension rate. Seepage column experiments were
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Optimizing tomato waste hydrolysate for enhanced fucoxanthin biosynthesis in mixotrophic cultivation of Isochrysis galbana Bioresource Technol. (IF 9.7) Pub Date : 2024-09-07 Xi-Wen Fan, Han Sun, Derek M. Ayittey, Zhi-gang Zhou, Carol Sze Ki Lin, Tao Tang, Zheng Sun
Vegetable waste, rich in bioactive compounds, offers a promising resource for producing value-added products. This study explored the use of tomato waste, containing glucose (40 mg/g), lycopene (95.12 μg/g), and β-carotene (24.31 μg/g), for cultivating fucoxanthin-rich . Water-soluble lycopene (2.0 μg/mL) and β-carotene (0.4 μg/mL) effectively upregulated key carotenoid synthesis genes and boosted
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Waste from the food industry: Innovations in biorefineries for sustainable use of resources and generation of value Bioresource Technol. (IF 9.7) Pub Date : 2024-09-06 Wédisley Volpato Maroldi, Isabela de Andrade Arruda Fernandes, Bogdan Demczuk Junior, Alessandra Cristina Pedro, Giselle Maria Maciel, Charles Windson Isidoro Haminiuk
Biorefineries have attracted significant attention from the scientific community and various industrial sectors due to their use of unconventional biomass sources to produce biofuels and other value-added compounds. Various agro-industrial residues can be applied in biorefinery systems, making them economically and environmentally attractive. However, the cost, efficiency, and profitability of the
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Effects of cellulase treatment on properties of lignocellulose-based biochar Bioresource Technol. (IF 9.7) Pub Date : 2024-09-06 Bu Li, Yundong Liu, Wang Kai Tong, Jun Bo Zhang, Han Tang, Wenjuan Wang, Min-tian Gao, Chaomeng Dai, Nan Liu, Jiajun Hu, Jixiang Li
As the most abundant renewable carbon source, lignocellulose holds potential as a raw material for biofuels and biochar. The components required for biofuel production differ from those for biochar, so combining processes can reduce costs. Biofuel preparation necessitates cellulase treatment of lignocellulose. This study examines the effects of various enzyme treatment conditions (dosage, time, temperature)
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Efficient glycyrrhetinic acid biomanufacturing through protein engineering and dual-GUS combination strategy with novel β-glucuronidase from Aspergillus calidoustus CLH-22 Bioresource Technol. (IF 9.7) Pub Date : 2024-09-06 Linhao Chen, Junjie Lai, Yan Luo, Tao Shu, Bo Lv, Chun Li
Glycyrrhetinicacid (GA) is a high-value pentacyclic triterpenoid with broad applications. However, the industrial production of GA is hindered by low yield and the accumulation of the intermediate product GlycyrrhetinicAcid3-O-Mono-β-D-Glucuronide (GAMG). This study first identified a novel β-glucuronidase (AcGUS) from CLH-22 through transcriptomic analysis, demonstrating a substrate preference for
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Insights from meta-analysis on carbon to nitrogen ratios in aerobic composting of agricultural residues Bioresource Technol. (IF 9.7) Pub Date : 2024-09-06 Bo Shen, Lili Zheng, Xiaoyan Zheng, Yang Yang, Dao Xiao, Yiqiang Wang, Zhanwu Sheng, Binling Ai
Given the heterogeneity of raw materials, the diversity of composting processes, and the complexity of biological transformations, systematically exploring the critical role of the initial carbon-to-nitrogen (C/N) ratio in the aerobic composting of agricultural residues is challenging within a single experimental study. This study employs -analysis to investigate this role. Statistical analysis of
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Construction of a redox-coupled pathway co-metabolizing glucose and acetate for high-yield production of butyl butyrate in Escherichia coli Bioresource Technol. (IF 9.7) Pub Date : 2024-09-06 Tianrui Zhang, Guoxia Liu, Yin Li, Yanping Zhang
The carbon and energy efficiency of a biomanufacturing process is of crucial importance in determining its economic viability. Formate dehydrogenase has been demonstrated to be beneficial in regenerating NADH from formate produced during sugar metabolism, thereby creating energy-efficient systems. Nevertheless, introducing enzyme(s) for butyryl butyrate (BB) biosynthesis based on this system, only
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Biological methane potentials of food waste of different components: Methane yields, production kinetics, and element balance Bioresource Technol. (IF 9.7) Pub Date : 2024-09-06 Justin A. Donatelli, Sheng Chang
This study assessed the methane production from food waste (FW) with dominant components of Meat (MFW), Fruit &Veg (VFW), Grain (GFW), Dairy (DFW), and the mixed feed of these components (MixFW). The high protein and lipid content FW (HPLFW) of MFW, DFW, and MixFW showed the methane yields of 337.0 ± 3.0, 307.4 ± 0.8, and 297.1 ± 1.2 ml-CH/gCOD, respectively, while those for the high carbohydrate content
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Unveiling cold Code: Acinetobacter calcoaceticus TY1′s adaptation strategies and applications in nitrogen treatment Bioresource Technol. (IF 9.7) Pub Date : 2024-09-05 Jiahui Yin, Junyi Li, Hongliang Xie, Yongman Wang, Jialin Zhao, Lixin Wang, Linhui Wu
Overcoming low nitrogen removal efficiency at low temperatures is a challenge in biological treatment. This study investigated the cold-tolerant heterotrophic nitrification-aerobic denitrification by TY1. Transcriptomic and biochemical analyses indicated that strain TY1 upregulated genes for energy production, assimilation, cell motility, and antioxidant enzyme production under cold stress, maintaining
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Antioxidants alleviated low-temperature stress in microalgae by modulating reactive oxygen species to improve lipid production and antioxidant defense Bioresource Technol. (IF 9.7) Pub Date : 2024-09-05 Xueting Song, Fanying Kong, Bing-Feng Liu, Qingqing Song, Nan-Qi Ren, Hong-Yu Ren
The aim of this study was to investigate the effects of various concentrations of antioxidants, including butyl hydroxy anisd (BHA), butylated hydroxytoluene (BHT), fulvic acid (FA), melatonin (MT), glycine betaine (GB) and putrescine (Put), on growth and lipid synthesis of microalgae under low-temperature (15 ℃). Changes in biochemical indicators, reactive oxygen species (ROS) level, glutathione (GSH)
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Low-carbon and overproduction of cordycepin from methanol using engineered Pichia pastoris cell factory Bioresource Technol. (IF 9.7) Pub Date : 2024-09-05 Bingjie Zhao, Yu Li, Yong Zhang, Meixi Pan, Guishen Zhao, Yanbin Guo
Cordycepin, a nucleoside analog, is widely used in medicine and health products. However, the production of cordycepin from faces the challenges of low productivity and high rate of greenhouse gas emissions. In this study, by optimizing the cordycepin biosynthesis pathway through promoter combination, Kozak sequence, and enzyme fusion, enhancing the methanol assimilation capacity in peroxisomes, adjusting
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Performance and microbial mechanism in sulfide-driven autotrophic denitrification by different inoculation sources in face of various sulfide and sulfate stress Bioresource Technol. (IF 9.7) Pub Date : 2024-09-05 Lijuan Feng, Xiaoran Sun, Junqiang Wang, Tianna Xie, Zhangli Wu, Jingke Xu, Zixuan Wang, Guangfeng Yang
To develop a reliable sulfide (S) autotrophic denitrification (SAD) process under S and SO salinity stresses, the biofilm performance and microbial mechanisms were comparatively studied using different inocula of activated sludge (AS) and intertidal sediment (IS). Biofilm IS enriched more denitrification genes (0.34 %) and S oxidation genes (0.29 %) than those with AS. Higher denitrification performance
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Engineered Halomonas for production of gamma-aminobutyric acid and 2-pyrrolidone Bioresource Technol. (IF 9.7) Pub Date : 2024-09-05 Ge Zhang, Weike Guo, Xueqing Yi, Zhongnan Zhang, Lizhan Zhang, Xu Liu, Fuqing Wu, Qiong Wu, Guo-Qiang Chen
Gamma-Aminobutyric acid (GABA) is a derivative of -glutamate, also a precursor for the synthesis of 2-pyrrolidone, which is a monomer of nylon-4. This study achieved a one-step biosynthesis of GABA and 2-pyrrolidone by overexpressing key genes involved in GABA and 2-pyrrolidone synthesis and deleting GABA degradation genes combined with reducing the degradation of 2-pyrrolidone precursor. The resulting
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Enhanced recovery of waste-born nutrients from sewage sludge ash and fish meal through fungal treatment: Mechanistic insights and impact of heavy metals Bioresource Technol. (IF 9.7) Pub Date : 2024-09-05 Jennifer Michellin Kiruba N, Jakub Zielinski, Julius Winiarski, Agnieszka Galanty, Justyna Dobrowolska-Iwanek, Vasileios Fotopoulos, Agnieszka Saeid
This study investigates the potential of TCPF to enhance phosphate recovery and nutrient bioavailability from sewage sludge ash (SSA) and fish meal (FM) through co-fermentation. The fungal treatment was found to significantly increase phosphate recovery, achieving up to 16 % efficiency, especially at a 10 g/L waste concentration. The key mechanism behind this enhancement is the production of low molecular
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Reduction of methane and nitrous oxide emissions from stormwater bioretention cells through microbial electrolytic cells Bioresource Technol. (IF 9.7) Pub Date : 2024-09-04 FangYue Cai, XiaoJun Zuo, Jie Xiong, WeiLi Jiang
This study investigated the reduction of methane (CH) and nitrous oxide (NO) emissions from stormwater bioretention cells through microbial electrolytic cell (MEC), showing the largest reduction of 32.21 % (CH) at 9.2 μA/m of current density and 56.16 % (NO) at 3.5 μA/m of current density, compared with the corresponding in the control (0 μA/m of current density). Kinetic of CH and NO emissions could
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Straw degradation enhanced in Thermomyces lanuginosus by transferring AgCMCase from Aspergillus glaucus Bioresource Technol. (IF 9.7) Pub Date : 2024-09-04 Yuan Meng, Yi Wei, Meng Jin, Yanli Zhang, Shihong Zhang
Fungi play a crucial role in straw composting due to the synergistic degradation effects of their secreted lignocellulose hydrolases. An efficient straw-composting system relies on thermophilic fungi and their lignocellulose hydrolases. , a typical thermophilic fungus in compost, lacks cellulase genes. A versatile strain capable of degrading cellulose, M85, which grows at 67 °C, was developed and transformed
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Application of earthworm can enhance biological power generation and accelerate sulfamethoxazole removal in agricultural soils Bioresource Technol. (IF 9.7) Pub Date : 2024-09-04 Hui-Xiang Wang, Qi-Wei Peng, Yu-Li Yang, Xi-Wei He, Yi-Jing Yang, Shuai Zhang, Hai-Liang Song
Microbial degradation plays a crucial role in removing sulfonamides from soil, enhancing sulfamethoxazole (SMX) remediation. To further augment SMX removal efficiency and mitigate the transmission risk associated with antibiotic resistance genes (ARGs), this study proposes a novel approach that integrates micro-animals, microorganisms, and microbial fuel cell (MFC) technology. The results showed that
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Comparative analysis of sulfur-driven autotrophic denitrification for pilot-scale application: Pollutant removal performance and metagenomic function Bioresource Technol. (IF 9.7) Pub Date : 2024-09-03 Peng Cui, Nianhong Wan, Chaoyu Li, Lei Zou, Min Ma, Jing Du, Yu Jiang
Two parallel pilot-scale reactors were operated to investigate pollutant removal performance and metabolic pathways in elemental sulfur-driven autotrophic denitrification (SDAD) process under low temperature and after addition of external electron donors. The results showed that low temperature slightly inhibited SDAD (average total nitrogen removal of ∼4.7 mg L) while supplement of sodium thiosulfate
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Use of aqueous liquor from digested sludge pyrolysis for biogas production: characterization, toxicity assessment, and rate-limiting step determination Bioresource Technol. (IF 9.7) Pub Date : 2024-09-03 Rui Zhang, Kazuyuki Oshita, Masaki Takaoka
This study assessed the characteristics and toxicity of aqueous pyrolytic liquid (APL) derived from digested sewage sludge on anaerobic digestion (AD) and determined its rate-limiting step. Digested sewage sludge was pyrolyzed at multiple temperatures (350–650 °C) and moisture levels (0–40.4 %), resulting in APLs with varying AD toxicities. APL 350 °C-0 % showed the least toxicity, whereas APL 650 °C-40
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Influential factors in anaerobic digestion of rice-derived food waste and animal manure: A comprehensive review Bioresource Technol. (IF 9.7) Pub Date : 2024-09-03 Tado Gyadi, Ajay Bharti, Sudip Basack, Pradeep Kumar, Elena Lucchi
Utilization of organic community wastes towards deriving sustainable renewable energy and adequate disposal of the residual has been an important topic of investigation. Anaerobic digestion and co-digestion of rice-derived food waste and animal manure for sustainable biogas generation is crucial from the view-point of community consumption. This paper presents an extensive review of the important and
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Exploring the impact of fulvic acid on electrochemical hydrogen-driven autotrophic denitrification system: Performance, microbial characteristics and mechanism Bioresource Technol. (IF 9.7) Pub Date : 2024-09-03 Haolin Chen, Meiyi Tang, Liang He, Xinxin Xiao, Fei Yang, Qiulai He, Shiquan Sun, Yang Gao, Lean Zhou, Yifu Li, Julong Sun, Wei Zhang
In this study, the effect of modulating fulvic acid (FA) concentrations (0, 25 and 50 mg/L) on nitrogen removal in a bioelectrochemical hydrogen autotrophic denitrification system (BHDS) was investigated. Results showed that FA increased the nitrate (NO-N) removal rate of the BHDSs from 37.8 to 46.2 and 45.2 mg N/(L·d) with a current intensity of 40 mA. The metagenomic analysis revealed that R2 (25 mg/L)
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Efficient binary diol-based deep eutectic solvent pretreatment for enhancing enzymatic saccharification and lignin fractionation from eucalyptus Bioresource Technol. (IF 9.7) Pub Date : 2024-09-03 Yulu He, Ruojin Shen, Lupeng Shao, Chao Wang, Guihua Yang, Feng Xu
An innovative binary biol-based deep eutectic solvent (DES), specifically ethylamine hydrochloride-ethylene glycol (EaCl-EG), was developed for efficient pretreatment of eucalyptus biomass. This DES exhibited superior performance in achieving high delignification (85.0%) and xylan removal (80.0%), while preserving a significant amount of cellulose (94.5%) compared to choline chloride-based DES. Notably
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Pressure-centric regulation for efficient anaerobic digestion: State-of-the-art, challenges and prospects Bioresource Technol. (IF 9.7) Pub Date : 2024-09-02 Ling Xu, Jun Xu, Weizhen Chen, Li Xie
Anaerobic digestion (AD) is an environmentally friendly technology that simultaneously stabilizes biowaste and produces biogas. Conventional AD faces challenges such as inadequate substrate degradation and low methane purity. Pressure-centric regulation serves as an AD optimization strategy that can enhance the digestion efficiency and generate higher-energy-value biogas. However, limited reviews have
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Combining thermal model and kinetics: Implications in dynamic simulation of anaerobic digesters Bioresource Technol. (IF 9.7) Pub Date : 2024-09-02 Giberto Mitsuyoshi Yuki Junior, Sabine Sochard, Flavia Dela Pierre, Elio Dinuccio, Frédéric Marias
In this study, ADM1-based kinetics were combined with a thermal model that accounts for various heat transfers inside and through the reactor’s boundaries. Computing the energy of bioreactions based on kinetic rates prevented an overestimation of approximately 20% in the heat demand of the heat exchanger, compared to calculations using feedstock degradation heat. This also improved the representation
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Risk level and removal performance of antibiotic resistance genes and bacterial pathogens in static composting with different temperatures Bioresource Technol. (IF 9.7) Pub Date : 2024-09-02 Yan Yang, Jiani Wang, Jie Yin, Zhongliang Cui, Guoxue Li, Guoliang Liu, Jinhui Jiang, Jing Yuan
The effect of different levels of temperature on resistance genes is not clear in mesophilic static composting (<50 °C). This study conducted livestock manure composting with different temperature gradients from 20 to 50 °C, it was found that the reduction rates of risk rank-I antibiotic resistance genes (from 3 % to 66 %), metal resistance genes (from −50 % to 76 %) and bacterial pathogens (from 72 %
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Engineering Rhodosporidium toruloides for sustainable production of value-added punicic acid from glucose and wood residues Bioresource Technol. (IF 9.7) Pub Date : 2024-09-02 Juli Wang, Dagem Z. Haddis, Qiong Xiao, David C. Bressler, Guanqun Chen
has emerged as a prominent candidate for producing single-cell oil from cost-effective feedstocks. In this study, the capability of to produce punicic acid (PuA), a representative plant unusual fatty acid, was investigated. The introduction of acyl lipid desaturase and conjugase (PgFADX) allowed to accumulate 3.7 % of total fatty acids as PuA. Delta-12 acyl lipid desaturase (PgFAD2) and diacylglycerol