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Triclosan facilitates the dissemination of antibiotic resistance genes during anaerobic digestion: Focusing on horizontal transfer and microbial response Bioresource Technol. (IF 9.7) Pub Date : 2024-09-23 Panliang Wang, Liuying Li, Yufei Zhang, Dayang Ren, Yiyi Feng, Xiaoyu Li, Dong Wu, Bing Xie, Junguo Ma
The present study aims to investigate the mechanism by which triclosan influences the dissemination of antibiotic resistance genes (ARGs) during the whole anaerobic digestion process. qPCR and metagenomic analyses revealed that triclosan facilitated ARGs dissemination in a dose- and time-dependent manner. Furthermore, integrons exhibited a significant correlation with the majority of quantified ARGs
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Microalgae-fungal pellets as novel dual-bioadsorbents for dye and their practical applications in bioremediation of palm oil mill effluent Bioresource Technol. (IF 9.7) Pub Date : 2024-09-22 Waraporn Mekpan, Benjamas Cheirsilp, Wageeporn Maneechote, Sirasit Srinuanpan
Microalgae-fungal pellets were applied as novel dual-biosorbents for dye removal compared to fungal pellets. Both pellet types effectively removed anionic dyes better than cationic dyes, with the maximum adsorbing efficiency being nearly 100 % at a wide pH range of 3–8. The adsorption isotherms of anionic Congo Red dye and Coomassie brilliant blue R-250 dye using both pellet types and their biosorption
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Enhanced nutrients removal from low C/N ratio rural sewage by embedding heterotrophic nitrifying bacteria and activated alumina in a tidal flow constructed wetland Bioresource Technol. (IF 9.7) Pub Date : 2024-09-21 Yan-Lin Wang, Yan-Ling Yang, Xu Tan, Xing Li, Li Zhao
Rural sewage treatment facilitates nitrogen and phosphorus removal yet can be costly. To address this challenge, a cost-effective embedding material mainly consisting of heterotrophic nitrifying bacteria, activated alumina (AA), and a solid carbon source (HPMC) was applied to a tidal flow constructed wetlands (TFCWs); aimed at stable nitrogen and phosphorus removal under low carbon-to-nitrogen (C/N)
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Construction waste as a filler of denitrification biofilter for nitrate utilization from wastewater: Characteristics, performance, microbial community and soilless culture Bioresource Technol. (IF 9.7) Pub Date : 2024-09-21 Yinzhou Bao, Lijing Bao, Nan Jiang, Xiaoyang Xu, Fan Yu, Haoyu Xing, Wenpei Ye, Peng Zhou, Yanbin Zhu, Shengyang Zheng, Manhong Huang
Construction waste (CW) is produced in large quantities, resulting in severe land occupation and resource depletion. This study utilized CW as fillers to construct a denitrification biofilter (DNBF-CW) for treating secondary effluent from wastewater plants. Performance and mechanism were analyzed by water quality, biomass and its distribution, physicochemical characteristics, microbial community structure
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Enhancing methane yield from microalgae: abiotic stress and cells disruption with quartz powder Bioresource Technol. (IF 9.7) Pub Date : 2024-09-20 Marek Klin, Andrzej Lewicki, Filip Pniewski, Adam Latała
This study investigates the biochemical methane potential (BMP) of microalgal biomass, introducing a novel cells disruption method using quartz powder (SiO2). A two-phase algae cultivation, involving nitrogen deprivation and salinity shifts, was employed to biochemically modify the biomass of two brackish green algae strains, Chlorella vulgaris and Monoraphidium contortum, enhancing their methane (CH4)
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Light-driven biodegradation of chloramphenicol by photosensitized Shewanella oneidensis MR-1 Bioresource Technol. (IF 9.7) Pub Date : 2024-09-20 Yongqi Wang, Haibing Dai, Meitong Jin, Jueyu Wang, Ziheng Song, Yingjie Liu, Wenqi Chai, Lu Cheng, Na Zhao, Daizong Cui, Min Zhao
Efficient and sustainable degradation of chloramphenicol has piqued the interest of the scientific community. This study constructed a photosensitized biohybrid system using Shewanella oneidensis MR-1 and cadmium sulfide (CdS). This system could efficiently degrade chloramphenicol with robust stability. Inhibitor experiments and transcriptome analysis revealed that reduced nicotinamide adenine dinucleotide
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Lignin-derived compounds assisted with Kocuria marina H-2 and Pseudomonas putida B6-2 co-culture enhanced naphthalene biodegradation Bioresource Technol. (IF 9.7) Pub Date : 2024-09-20 Jia-Qi Cui, Zhi-Qiang He, Kai Chen, Samuel Ntakirutimana, Zhi-Hua Liu, He Bai, Bing-Zhi Li, Ying-Jin Yuan
The implementation of environmentally friendly and sustainable remediation strategies positively impacts solid waste management. In this study, the Kocuria marina H-2 and Pseudomonas putida B6-2 co-culture system demonstrated enhanced naphthalene biodegradation efficiency compared to single-strain cultures. Under optimal conditions of 35 °C, 200 rpm/min, and a 1:1 ratio of the co-culture system, the
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Enhancing the removal of sulfamethoxazole and microalgal lipid production through microalgae-biochar hybrids Bioresource Technol. (IF 9.7) Pub Date : 2024-09-20 Kai-Xuan Huang, Ashiwin Vadiveloo, Hua Zhong, Bin-Di Mao, Jian Qiu, Feng Gao
The use of microalgae for antibiotic removal has received increasing attention due to its many advantages. However, challenges such as limited removal rates and the complexity of algae cell recovery persist. In this study, chitosan and FeCl3 modified peanut shell biochar (CTS@FeBC) was prepared for the immobilization of Chlorella pyrenoidosa. The results showed that CTS@FeBC effectively adsorbed and
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Optimization of fungal secondary metabolites production via response surface methodology coupled with multi-parameter optimized artificial neural network model Bioresource Technol. (IF 9.7) Pub Date : 2024-09-20 Hongjun Shu, Xiaona Chen, Qian Jiang, Yike Wang, Zhongyi Wan, Jinzhong Xu, Pinmei Wang
Filamentous fungi’s secondary metabolites (SMs) possess significant application owing to their distinct structure and diverse bioactivities, yet their restricted yield levels often hinder further research and application. The study developed a response surface methodology-artificial neural network (RSM-ANN) strategy with multi-parameter optimizations of the ANN model to optimize medium for the production
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Efficient conversion of xylan to l-arabinose by multi-enzymatic cascade reaction including d-xylulose 4-epimerase as a new stereoselectivity-exchange enzyme Bioresource Technol. (IF 9.7) Pub Date : 2024-09-20 Tae-Eui Lee, Kyung-Chul Shin, Deok-Kun Oh
l-Arabinose has been produced by hydrolyzing arabinan, a component of hemicellulose. However, l-arabinose has limitations in industrial applications owing to its relatively high cost. Here, d-xylulose 4-epimerase as a new-type enzyme was developed from d-tagaturonate 3-epimerase from Thermotoga petrophila using structure-guided enzyme engineering. d-Xylulose 4-epimerase, which epimerized d-xylulose
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Enhancing nitrogen transformation and humification in cow manure composting through psychrophilic and thermophilic nitrifying bacterial consortium inoculation Bioresource Technol. (IF 9.7) Pub Date : 2024-09-19 Zhiming Xu, Ronghua Li, Daniel KuoK Ho Tang, Xiu Zhang, Xin Zhang, Hong Liu, Fusheng Quan
Excessive nitrogen release during composting poses significant challenges to both the environment and compost quality. Biological enhancement of humification and nitrogen conservation is an environmentally friendly and cost-effective approach to composting. The aim of this study was to develop a psychrophilic and thermophilic nitrifying bacterial consortium (CNB) and investigate its role in nitrogen
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Construction of dendritic mesoporous SiO2 supported Cu catalyst for hydrodeoxidation of lignin derivatives Bioresource Technol. (IF 9.7) Pub Date : 2024-09-19 Chenhuan Wang, Mengying Wang, Lei Chen, Ningzhao Shang, Wei Gao, Xiang Cheng, Shutao Gao, Yongjun Gao, Chun Wang
Chemoselective hydrodeoxygenation (HDO) of lignin derivatives is of great importance in converting biomass into high value-added chemicals. Herein, we report a simple hydrothermal pathway to fabricate a highly active, chemically selective, and reusable catalyst (Cu/DMSN) by loading copper clusters on “dendritic” mesoporous silica nanospheres. Cu/DMSN exhibits exceptional catalytic activity (conversion > 99 %
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Insight into continuous-flow partial nitrification granular sludge system: Long-term performance, formation mechanism, and partial nitrification granular sludge/Anammox coupled system for mature landfill leachate treatment Bioresource Technol. (IF 9.7) Pub Date : 2024-09-19 Zhizhan Luo, Bohan Chen, Mengen Lei, Yong Li, Naixin Zhang, Yeyou Zhuang, Lusha Huang, Ji Li
A continuous-flow partial nitrification granular sludge (PNGS) coupled Anammox system was constructed for mature landfill leachate (MLL) treatment. Stable NO2–-N accumulation was achieved with NH4+-N to NO2–-N transformation ratio (NTR) of 98–100 % with influent NH4+-N ranged from 342 ± 29 to 1106 ± 20 mg/L. When treating MLL, particular acyl homoserine lactones (AHLs), cyclic dimeric guanosine monophosphate
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Fulvic acid impact on constructed wetland–microbial electrolysis cell system performance: Metagenomic insights Bioresource Technol. (IF 9.7) Pub Date : 2024-09-18 Ming Xu, Hao-qiang Chen, Peng Gao, Xiao-xiao Shen
This study explores the roles of fulvic acid (FA) in both a conventionally constructed wetland (CCW) and a newly constructed wetland–microbial electrolysis cell (ECW). The results showed that FA increased the average removal efficiency of chemical oxygen demand, total phosphorus, total nitrogen, and ammonia nitrogen in ECW by 8.6, 46.2, 33.0, and 27.9 %, respectively, compared to CCW, and reduced the
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Crosslinking reactions of a model aminated lignin compound as a platform for building thermosetting polymers for lignin-based bio adhesives Bioresource Technol. (IF 9.7) Pub Date : 2024-09-18 Saman Ghahri, Eko Setio Wibowo, Byung-Dae Park
As millions of tons of kraft lignin are being wasted, a potential application is to use its crosslinking reactions to build thermosetting bio adhesives. However, the crosslinking reactions between lignin molecules are not fully understood. The present study aims to elucidate the crosslinking reactions of the model lignin compound guaiacylglycerol-β-guaiacyl ether (GGE) via one-step hydroxymethylation/
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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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Application of Biofloc-Down flow hanging sponge system to remove nitrogen components in recirculating zero water exchange aquaculture system Bioresource Technol. (IF 9.7) Pub Date : 2024-09-17 Samadhi Wandana, Nur Adlin, Penpicha Satanwat, Wiboonluk Pungrasmi, Wilasinee Kotcharoen, Yutaka Takeuchi, Takahiro Watari, Masashi Hatamoto, Takashi Yamaguchi
This study presents a novel approach to sustainable aquaculture by integrating biofloc technology (BFT) with a compact down-flow hanging sponge (DHS) reactor. The integrated BFT-DHS system effectively removed nitrogen compounds while maintaining ammonia–nitrogen (NH4+-N) concentrations below 1 mg-N L-1 without water exchange. Application of this system in a tank bred with juvenile Oreochromis niloticus
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Development and application of chitosan–urea cotton adsorbent as biomimicry technology inspired by natural predator–prey relationships Bioresource Technol. (IF 9.7) Pub Date : 2024-09-17 Jeong Sik Choi, Yun Hwan Park, Sehoon Oh, Yoon-E Choi
Predator-prey interactions play a crucial role in maintaining ecological balance and possibly provide inspiration for strategies to mitigate environmental changes such as harmful algal blooms (HABs). To this end, this study aims to develop a novel strategy to mitigate HABs based on predator–prey interaction, i.e., Daphnia magna and Microcystis aeruginosa interaction. Bio-compounds (urea and 9-octadecenamide)
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Directed evolution and metabolic engineering generate an Escherichia coli cell factory for de novo production of 4-hydroxymandelate Bioresource Technol. (IF 9.7) Pub Date : 2024-09-17 Peipei Liu, Qianwen Jin, Xuanye Li, Ruilin Zhang, Haiming Yuan, Chengwei Liu, Pengchao Wang
4-hydroxymandelate is a high-value aromatic compound used in the medicine, cosmetics, food, and chemical industry. However, existing natural extraction and chemical synthesis methods are costly and lead to environmental pollution. This study employed metabolic engineering and directed evolution strategies for de novo 4-hydroxymandelate biosynthesis. Two key challenges were addressed: insufficient precursor
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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, Desulfovibrio genera and Fusarium solani, achieve degradation rates of 5%-25%. Here, a novel strain, Rhodococcus pyridinivorans LZ1 was isolated, demonstrating the
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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 (CO2) 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 CO2 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 (NosZ). Counter-diffusion with an embedded aerobic layer declined the effect of current on NosZ (K00376) for N2O reduction. Other coding genes for denitrification in cathodic membrane aerated biofilms, including K02568
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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 NH4+-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 NH3 stripping process has received little attention
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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 Geobacter metallireducens GS-15 and two quinolone antibiotics: lomefloxacin (LOM) and ciprofloxacin (CIP) at 5 μg/L. Short-term LOM exposure increased
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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
Acetobacterium woodii and Megasphaera hexanoica were co-cultured for caproic acid (CA) production from lactic acid (LA) and CO2. 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 CO2 produced 0.6 g/L CA with some biomass growth. ZVI increased LA consumption
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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