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Conversion of full nitritation to partial nitritation/anammox in a continuous granular reactor for low-strength ammonium wastewater treatment at 20 °C Biodegradation (IF 2.805) Pub Date : 2021-01-15 Feiyue Qian, Ziheng Huang, Yuxin Liu, Olatidoye Omo wumi Grace, Jianfang Wang, Guangyu Shi
The feasibility of converting full nitritation to partial nitritation/anammox (PN/A) at ambient temperature (20 °C) was investigated in a continuous granular reactor. The process was conducted without anammox bacteria inoculation for the treatment of 70 mg L−1 of low-strength ammonium nitrogen wastewater. Following the stepwise increase of the nitrogen loading rate from 0.84 to 1.30 kg N m−3 d−1 in
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Insights into microbial community in microbial fuel cells simultaneously treating sulfide and nitrate under external resistance Biodegradation (IF 2.805) Pub Date : 2021-01-13 Jing Cai, Mahmood Qaisar, Aqiang Ding, Jiqiang Zhang, Yajuan Xing, Qiangbiao Li
The effect of electricity, induced by external resistance, on microbial community performance is investigated in Microbial Fuel Cells (MFCs) involved in simultaneous biotransformation of sulfide and nitrate. In the experiment, three MFCs were operated under different external resistances (100 Ω, 1000 Ω and 10,000 Ω), while one MFC was operated with open circuit as control. All MFCs demonstrate good
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Aerobic degradation of 4-fluoroaniline and 2,4-difluoroaniline: performance and microbial community in response to the inocula Biodegradation (IF 2.805) Pub Date : 2021-01-11 Zhi-Qing Zhao, Xiao-Meng Wei, Xiao-Li Shen, Ghulam Abbas, Rui Fan, Yi Jin
In this study, a distinct inoculum was investigated as an isolated variable within sequencing batch reactors via a comparison of the 4-fluoroaniline (4-FA) or 2,4-difluoroaniline (2,4-DFA) removal amounts. The inocula were derived from a treatment plant for treating pharmaceutical wastewater plus a small amount of municipal sewage (PMS), a treatment plant for treating fluoridated hydrocarbon wastewater
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Anaerobic benzene mineralization by natural microbial communities from Niger Delta Biodegradation (IF 2.805) Pub Date : 2020-12-02 Samuel C. Eziuzor, Matthias Schmidt, Carsten Vogt
The Niger Delta is one of the most damaged ecosystems in the world, mainly due to petroleum contamination by oil exploration accidents. We investigated the natural attenuation potential of Niger Delta subsurface sediment samples for anaerobic hydrocarbon degradation using benzene as a model compound under iron-reducing, sulfate-reducing, and methanogenic conditions. Benzene was slowly mineralized under
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Microbiome taxonomic and functional profiles of two domestic sewage treatment systems Biodegradation (IF 2.805) Pub Date : 2020-11-23 K. J. Hidalgo, T. Saito, R. S. Silva, Tiago P. Delforno, Iolanda C. S. Duarte, V. M. de Oliveira, Dagoberto Y. Okada
Anaerobic systems for domestic sewage treatment, like septic tanks and anaerobic filters, are used in developing countries due to favorable economic and functional features. The anaerobic filter is used for the treatment of the septic tank effluent, to improve the COD removal efficiency of the system. The microbial composition and diversity of the microbiome from two wastewater treatment systems (factory
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A comprehensive study on bisphenol A degradation by newly isolated strains Acinetobacter sp. K1MN and Pseudomonas sp. BG12 Biodegradation (IF 2.805) Pub Date : 2020-11-17 Magdalena Noszczyńska, Michalina Chodór, Łukasz Jałowiecki, Zofia Piotrowska-Seget
Bisphenol A (BPA) is an endocrine disrupting chemical. Its extensive use has led to the wide occurrence of BPA in various environmental ecosystems, at levels that may cause negative effects to the ecosystem and public health. Although there are many bacteria able to BPA utilization, only a few of them have a strong capacity for its biodegradation. Therefore, it is important to search for new bacteria
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Microbial degradation of organophosphorus pesticides using whole cells and enzyme extracts Biodegradation (IF 2.805) Pub Date : 2020-11-07 J. Y. Santillan, A. Muzlera, M. Molina, E. S. Lewkowicz, A. M. Iribarren
The use of microbial phosphotriesterases in the degradation of organophosphorus compounds employed as pesticides, plasticizers and petroleum additives is a sustainable alternative for bioremediation of water and soils, decontamination of particular foods and as poisoning antidote. Whole cells of six wild type microorganisms—Streptomyces phaeochromogenes, Streptomyces setonii, Nocardia corynebacterioides
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Transcriptomic response of Gordonia sp. strain NB4-1Y when provided with 6:2 fluorotelomer sulfonamidoalkyl betaine or 6:2 fluorotelomer sulfonate as sole sulfur source Biodegradation (IF 2.805) Pub Date : 2020-11-05 Eric M. Bottos, Ebtihal Y. AL-shabib, Dayton M. J. Shaw, Breanne M. McAmmond, Aditi Sharma, Danae M. Suchan, Andrew D. S. Cameron, Jonathan D. Van Hamme
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Biodegradation of petroleum refining industry oil sludge by microbial-assisted biocarrier matrix: process optimization using response surface methodology Biodegradation (IF 2.805) Pub Date : 2020-10-14 K. V. Swathi, R. Muneeswari, K. Ramani, G. Sekaran
Safe disposal of petroleum oil sludge generated from crude oil storage tank bottom is a major challenge for petroleum refineries across the globe. The presence of long chain hydrocarbons in petroleum oil sludge are known to have effects on the environment through bioaccumulation or biosorption. The present study was focused to develop a modified bioremediation process using hydrocarbonoclastic microbial-assisted
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Modeling anaerobic digestion metabolic pathways for antibiotic-contaminated wastewater treatment Biodegradation (IF 2.805) Pub Date : 2020-10-11 Rafael Frederico Fonseca, Guilherme Henrique Duarte de Oliveira, Marcelo Zaiat
Anaerobic digestion has been used to treat antibiotic-contaminated wastewaters. However, it is not always effective, since biodegradation is the main removal mechanism and depends on the compound chemical characteristics and on how microbial metabolic pathways are affected by the reactor operational conditions and hydrodynamic characteristics. The aim of this study was to develop a mathematical model
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Biotransformation of pentachlorophenol by an indigenous Bacillus cereus AOA-CPS1 isolated from wastewater effluent in Durban, South Africa Biodegradation (IF 2.805) Pub Date : 2020-10-03 Oladipupo A. Aregbesola, Mduduzi P. Mokoena, Ademola O. Olaniran
Pentachlorophenol (PCP) is a recalcitrant biocide that bioaccumulates in the environment due to its persistent nature and has been listed as a priority pollutant due to its toxicological and health effects. In this study, a novel PCP-degrading Bacillus cereus strain AOA-CPS1 (BcAOA) was isolated from wastewater and characterized for PCP biotransformation in a batch reactor. The degradation kinetics
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Biodegradation of diethyl-phthalate (DEP) by halotolerant bacteria isolated from an estuarine environment. Biodegradation (IF 2.805) Pub Date : 2020-09-27 Elen Aquino Perpetuo,Esther Cecília Nunes da Silva,Bruno Karolski,Claudio Augusto Oller do Nascimento
Phthalates are widely used as plasticizers in many industrial products due to their chemical properties that confer flexibility and durability to building materials, lubricants, solvents, insect repellents, clothing, cosmetics, being widely distributed in the environment. Besides persistent, they are also considered endocrine-disrupting compounds (EDCs), causing a global concern about their release
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Enhancement of chlortetracycline biodegradation with Trichoderma harzianum LJ245 and its spore-producing mutants using co-metabolism. Biodegradation (IF 2.805) Pub Date : 2020-09-19 Yanju Li,Yu Gong,Huiying Zhao,Jingang Gu,Zinuo Wang,Xuli He
Chlortetracycline (CTC) has been widely used in veterinary medicine in recent years, which has resulted in severe environmental issues due to its low degradation rate and high risk to induce antibiotic resistance bacteria and genes. In previous studies, CTC could be efficiently degraded by Trichoderma harzianum LJ245. Nevertheless, the strain itself suffers from relatively poor adaptability due to
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Efficient degradation of ivermectin by newly isolated Aeromonas taiwanensis ZJB-18,044. Biodegradation (IF 2.805) Pub Date : 2020-09-16 Yuanshan Wang,Meihua Gong,Xianlin Wang,Xiaolun Peng,Yuwei Wang,Jiahui Guan,Dongyuan Cheng,Chunyue Weng,Yuguo Zheng
Ivermectin (IVM) is a widely used antiparasitic agent and acaricide. Despite its high efficiency against nematodes and arthropods, IVM may pose a threat to the environment due to its ecotoxcity. In this study, degradation of IVM by a newly isolated bacterium Aeromonas taiwanensis ZJB-18,044 was investigated. Strain ZJB-18,044 can completely degrade 50 mg/L IVM in 5 d with a biodegradation ability of
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Comparative analysis of denitrification performance, denitrifying community and functional genes to oxytetracycline exposure between single and hybrid biodegradable polymers supported solid-phase denitrification systems. Biodegradation (IF 2.805) Pub Date : 2020-09-13 Zeyu Lan,Jingyi Yang,Lijuan Feng,Hui Yu,Xin Ye,Guangfeng Yang,Huiming Gao,Jiaheng Zhou
Biodegradable carrier are vital for the solid-phase denitrification (SPD) systems for treating nitrate-rich water. Two solid-phase denitrification reactors were developed with both 200 g L−1 of single (polycaprolactone, PCL) (R1) and hybrid solid carbon sources (PCL/polylactic acid (PLA) /polyhydroxyalkanoates (PHA)) (R2) to examine the denitrification performance, denitrifying community and functional
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NC10 bacteria promoted methane oxidation coupled to chlorate reduction. Biodegradation (IF 2.805) Pub Date : 2020-09-11 Zi-Yan Li,Xin Li,Bin Tan,Pan-Long Lv,He-Ping Zhao
The strictly anaerobic serum bottles were applied to investigate methane oxidation coupled to chlorate (ClO3−) reduction (MO-CR) without exogenous oxygen. 0.35 mM ClO3− was consumed within 20 days at the reduction rate of 17.50 μM/d, over three times than that of ClO4−. Chlorite (ClO2−) was not detected throughout the experiment and the mass recovery of Cl− was over 89%. Isotope tracing results showed
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Biodegradation of natural rubber and deproteinized natural rubber by enrichment bacterial consortia. Biodegradation (IF 2.805) Pub Date : 2020-09-10 Lan Huong Nguyen,Hoang Dung Nguyen,P Thao Tran,Thi Thuong Nghiem,Thi Thanh Nguyen,Viet Linh Dao,Trung Nghia Phan,Anh Kim To,Masashi Hatamoto,Takashi Yamaguchi,Daisuke Kasai,Masao Fukuda
This study examined the biodegradation of natural rubber (NR) and deproteinized natural rubber (DPNR) by bacterial consortia enriched from a rubber-processing factory’s waste in Vietnam. The results reveal the degradation in both NR and DPNR, and the DPNR was degraded easier than NR. The highest weight loss of 48.37% was obtained in the fourth enrichment consortium with DPNR, while 35.39% was obtained
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ANAMMOX-denitrification biomass in microbial fuel cell to enhance the electricity generation and nitrogen removal efficiency. Biodegradation (IF 2.805) Pub Date : 2020-09-03 Ivar Zekker,Gourav Dhar Bhowmick,Hans Priks,Dibyojyoty Nath,Ergo Rikmann,Madis Jaagura,Taavo Tenno,Kaido Tämm,Makarand Madhao Ghangrekar
The inoculum biomass was collected from a pilot-scale (3 m3 process tank) nitritation-anaerobic ammonium oxidation (ANAMMOX) (deammonification moving bed biofilm (DeaMBBR)) reactor demonstrating the highest total nitrogen removal rate (TNRR) of 0.33 kg N m−3 day−1. This biomass was used for inoculating the anodic chamber of a microbial fuel cell (MFC) to investigate the capacity of DeaMBBR biomass
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Prospecting bacterial consortia from a geothermal site for metals biotransformation. Biodegradation (IF 2.805) Pub Date : 2020-07-16 E M S Brito,M Rodríguez-Galván,L G Hernández-Espino,C A Caretta,M Goñi-Urriza,O Malm,J P M Torres,R Guyoneaud
Biomats that flourished in a fumarole located on the geothermal site Los Azufres (Mexico) were used as inocula to select aerobic and sulfate-reducing bacteria consortia for studying their capacity to reduce hexavalent chromium [Cr(VI)], aiming to use these consortia in biotransformation technologies. The sample site is characterized by slightly warm (nearly 27 \(^\circ\)C), acid (pH 3) and about hypoxic
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Performance, kinetics characteristics and enhancement mechanisms in anammox process under Fe(II) enhanced conditions. Biodegradation (IF 2.805) Pub Date : 2020-06-10 Si-Min Tang,Ze-Hao Xu,Ya-Lei Liu,Guang-Feng Yang,Jun Mu,Ren-Cun Jin,Qiao Yang,Xiao-Ling Zhang
In order to explore the performance, kinetics characteristics and enhancement mechanisms in anammox process under ferrous iron enhanced conditions, a laboratory-scale UASB anammox reactor has been built up and operated for 534 days. Experimental results showed that the Anammox process was successfully started up in a short operation period and the TNRE reached 83.34 ± 2.96% with a maximum total nitrogen
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A microcosm study on persulfate oxidation combined with enhanced bioremediation to remove dissolved BTEX in gasoline-contaminated groundwater. Biodegradation (IF 2.805) Pub Date : 2020-05-29 Yuan Xia,Yaping Cheng,Liuyue Li,Yudao Chen,Yaping Jiang
The combination of persulfate (PS) oxidation with enhanced bioremediation (EBR) is a potential trend in remediating organic-contaminated groundwater. However, the impacts of PS on EBR presented in the transition zone between PS oxidation zone and EBR zone need further study. To better characterize the impacts and provide available indicators, PS oxidation and EBR with nitrate amended were performed
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Enhanced long-term attenuation of 1,4-dioxane in bioaugmented flow-through aquifer columns. Biodegradation (IF 2.805) Pub Date : 2020-05-28 Marcio Luis Busi da Silva,Ya He,Jacques Mathieu,Pedro J J Alvarez
Long term natural attenuation of 1,4-dioxane (dioxane) and its enhanced biodegradation after bioaugmentation with Pseudonocardia dioxanivorans CB1190 were assessed using flow-through aquifer columns. Natural attenuation of dioxane was not observed even after 2 years of acclimation. However, dioxane removal was observed in the bioaugmented columns (34% when the influent was 200 µg/L and 92% for 5 mg/L)
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Metagenomic insights into microbial characterizations in explaining the distinction of biofilter performance during start-up. Biodegradation (IF 2.805) Pub Date : 2020-05-27 Shiyang Zhang,Julin Yuan,Weijie Guo
As an effective alternative for dissolved nitrogen removal, biofilter closely associates its treatment performance to structural and/or operational conditions. In this study, a set of four different biofilters including MAVF (mature aerated vertical flow), NAVF (new aerated vertical flow), NVF (new non-aerated vertical flow), and BHF (baffled non-aerated horizontal flow) were employed to purify low
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Investigating promising substrates for promoting 1,4-dioxane biodegradation: effects of ethane and tetrahydrofuran on microbial consortia. Biodegradation (IF 2.805) Pub Date : 2020-05-02 Yi Xiong,Olivia U Mason,Ashlee Lowe,Zhiming Zhang,Chao Zhou,Gang Chen,Michael J Villalonga,Youneng Tang
Cometabolic biodegradation of 1,4-dioxane (dioxane) in the presence of primary substrates is a promising strategy for treating dioxane at environmentally relevant concentrations. Seven aqueous amendments (i.e., tetrahydrofuran (THF), butanone, acetone, 1-butanol, 2-butanol, phenol and acetate) and five gaseous amendments (i.e., C1–C4 alkanes and ethylene) were evaluated as the primary substrates for
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Isolation and characterization of 2-butoxyethanol degrading bacterial strains. Biodegradation (IF 2.805) Pub Date : 2020-04-30 Christine Woiski,Daniel Dobslaw,Karl-Heinrich Engesser
A total of 11 bacterial strains capable of completely degrading 2-butoxyethanol (2-BE) were isolated from forest soil, a biotrickling filter, a bioscrubber, and activated sludge, and identified by 16S rRNA gene sequence analysis. Eight of these strains belong to the genus Pseudomonas; the remaining three strains are Hydrogenophaga pseudoflava BOE3, Gordonia terrae BOE5, and Cupriavidus oxalaticus BOE300
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Aerobic degradation of dichlorinated dibenzo-p-dioxin and dichlorinated dibenzofuran by bacteria strains obtained from tropical contaminated soil. Biodegradation (IF 2.805) Pub Date : 2020-04-27 Salametu Saibu,Sunday A Adebusoye,Ganiyu O Oyetibo,Debora F Rodrigues
Bacterial diversity and aerobic catabolic competence of dioxin-degrading bacterial strains isolated from a polluted soil in the tropics were explored. Isolation of bacteria occurred after 12 months of consecutive enrichment, with dioxin congeners serving as the only sources of carbon and energy. Seventeen strains that were isolated were subsequently screened for dioxin metabolic competence. Among these
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Characterization of carbaryl-degrading strain Bacillus licheniformis B-1 and its hydrolase identification. Biodegradation (IF 2.805) Pub Date : 2020-04-18 Kaidi Hu,Xingjie Wang,Jiawen Zhu,Aiping Liu,Xiaolin Ao,Li He,Shujuan Chen,Kang Zhou,Yong Yang,Likou Zou,Shuliang Liu
Pesticides introduced inadvertently or deliberately into environment by anthropogenic activity have caused growing global public concern, therefore the search of approaches for elimination of such xenobiotics should be encouraged. A cypermethrin-degrading bacterial strain Bacillus licheniformis B-1 was found to efficiently degrade carbaryl in LB medium at concentrations of 50–300 mg L−1 within 48 h
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The influence of upflow velocity and hydraulic retention time changes on taxonomic and functional characterization in Fluidized Bed Reactor treating commercial laundry wastewater in co-digestion with domestic sewage. Biodegradation (IF 2.805) Pub Date : 2020-04-07 Thais Zaninetti Macedo,Henrique de Souza Dornelles,Ana Luiza do Valle Marques,Tiago PalladinoDelforno,Vitor Borin Centurion,Valéria Maia de Oliveira,Edson Luiz Silva,Maria Bernadete Amâncio Varesche
A large-scale (19.8L) Fluidized Bed Reactor (FBR) operated for 592 days was used to assess the removal performance of linear alkylbenzene sulfonate (LAS). Adjustments in hydraulic retention time (HRT) (18 and 30 h), ethanol (50, 100, 200 mg L−1) and linear alkylbenzene sulfonate (LAS) concentration (6.3–24.7 mg L−1) with taxonomic and functional characterization of biomass using Whole Genome Shotgun
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Enrichment and key features of a robust and consistent indigenous marine-cognate microbial consortium growing on oily bilge wastewaters. Biodegradation (IF 2.805) Pub Date : 2020-04-06 Melina Nisenbaum,Georgina Corti-Monzón,Marcela Villegas-Plazas,Howard Junca,Adriana Mangani,María L Patat,Jorge F González,Silvia E Murialdo
Oily bilge wastewater (OBW) is a hazardous hydrocarbon-waste generated by ships worldwide. In this research, we enriched, characterized and study the hydrocarbon biodegradation potential of a microbial consortium from the bilges of maritime ships. The consortium cZ presented a biodegradation efficiency of 66.65% for total petroleum hydrocarbons, 72.33% for aromatics and 97.76% removal of n-alkanes
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Fungal treatment of mature landfill leachate utilizing woodchips and wheat-straw as co-substrates. Biodegradation (IF 2.805) Pub Date : 2020-04-05 Mofizul Islam,Qiuyan Yuan
Mature landfill leachate (MLL) tend to be highly contaminated due to the presence of refractory contaminants such as humic–fulvic substances, xenobiotic compounds, and heavy metals. This study investigated the treatment efficiency of MLL by deploying Cladosporium sp., Trichoderma asperellum, and Tyromyces chioneus fungal strains. Chemical oxygen demand (COD) and soluble COD (sCOD) removal efficiencies
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Enrichment and characterization of a bilge microbial consortium with oil in water-emulsions breaking ability for oily wastewater treatment. Biodegradation (IF 2.805) Pub Date : 2020-03-19 Georgina Corti-Monzón,Melina Nisenbaum,Marcela Villegas-Plazas,Howard Junca,Silvia Murialdo
Oily bilge wastewater is one of the main sources of hydrocarbons pollution in marine environments due to accidental or clandestine discharges. The main technical challenge for its effective treatment is the presence of stable oil-in-water (O/W) emulsions. In this work we are reporting an enriched microbial consortium from bilge wastewater with remarkable ability to demulsify oil in water emulsions
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Study and valorisation of wastewaters generated in the production of bacterial nanocellulose. Biodegradation (IF 2.805) Pub Date : 2020-03-19 Francisco A G Soares da Silva,João V Oliveira,Catarina Felgueiras,Fernando Dourado,Miguel Gama,M Madalena Alves
Two culture media were tested for the production of bacterial nanocellulose (BNC) under static culture fermentation, one containing molasses (Mol-HS), the other molasses and corn steep liquor (Mol-CSL), as a source of carbon and nitrogen, respectively. These are low-cost nutrients widely available, which provide very good BNC productivities. However, the use of these substrates generates wastewaters
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Effects of graphene oxide and reduced graphene oxide on acetoclastic, hydrogenotrophic and methylotrophic methanogenesis. Biodegradation (IF 2.805) Pub Date : 2020-02-28 J Iván Bueno-López,Chi H Nguyen,J Rene Rangel-Mendez,Reyes Sierra-Alvarez,James A Field,Francisco J Cervantes
This study describes the effects of graphene oxide (GO) and reduced graphene oxide (rGO) on the acetoclastic, hydrogenotrophic and methylotrophic pathways of methanogenesis by an anaerobic consortium. The results showed that GO negatively affected the hydrogenotrophic and acetoclastic pathways at a concentration of 300 mg/L, causing a decrease of ~ 38% on the maximum specific methanogenic activity
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RETRACTED ARTICLE: Rhamnolipid biosurfactants: functional properties and potential contributions for bioremediation. Biodegradation (IF 2.805) Pub Date : 2018-10-26 Yanling Ma,Yanpeng Li,Chao Huang,Yuexin Tian,Zhidan Hao
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Special issue: bioremediation of contaminated soil and water: GeoTrop 2017. Biodegradation (IF 2.805) Pub Date : 2018-07-05 Yiu Fai Tsang,Yong Sik Ok,Ajit K Sarmah,Bin Cao,Ming Hung Wong
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Carbon sources that enable enrichment of 1,4-dioxane-degrading bacteria in landfill leachate. Biodegradation (IF 2.805) Pub Date : 2019-09-13 Daisuke Inoue,Kazuki Hisada,Takuya Okumura,Yoshinori Yabuki,Gen Yoshida,Masashi Kuroda,Michihiko Ike
1,4-Dioxane (DX) is a recalcitrant cyclic ether that has gained attention as an emerging pollutant in the aquatic environment. Enrichment of indigenous DX-degrading bacteria, which are considered to be minor populations even in DX-impacted environments, is the key for efficient biological DX removal. Therefore, this study aimed to explore carbon sources applicable for the enrichment of DX-degrading
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Microbiology of municipal solid waste landfills: a review of microbial dynamics and ecological influences in waste bioprocessing. Biodegradation (IF 2.805) Pub Date : 2019-09-11 Lerato Sekhohola-Dlamini,Memory Tekere
Municipal solid waste landfills are widely used as a waste management tool and landfill microbiology is at the core of waste degradation in these ecosystems. This review investigates the microbiology of municipal solid waste landfills, focusing on the current state of knowledge pertaining to microbial diversity and functions facilitating in situ waste bioprocessing, as well as ecological factors influencing
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Enrichment and characterization of a highly efficient tetrahydrofuran-degrading bacterial culture. Biodegradation (IF 2.805) Pub Date : 2019-08-28 Hui Huang,Haixia Yu,Minbo Qi,Zubi Liu,Haixia Wang,Zhenmei Lu
Tetrahydrofuran (THF) is a ubiquitous toxic and carcinogenic pollutant. Screening for pure or mixed-culture microorganisms that can efficiently degrade THF is difficult due to its chemical stability. In this study, an enrichment culture, H-1, with a stable THF-degrading ability and microbial community structure was enriched from activated sludge and could efficiently degrade 95% of 40 mM THF within
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Methane oxidation coupled to vanadate reduction in a membrane biofilm batch reactor under hypoxic condition. Biodegradation (IF 2.805) Pub Date : 2019-08-13 Zhen Wang,Ling-Dong Shi,Chun-Yu Lai,He-Ping Zhao
This study shows vanadate (V(V)) reduction in a methane (CH4) based membrane biofilm batch reactor when the concentration of dissolved oxygen (O2) was extremely low. V(IV) was the dominant products formed from V(V) bio-reduction, and majority of produced V(IV) transformed into precipitates with green color. Quantitative polymerase chain reaction and Illumina sequencing analysis showed that archaea
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The effect of quorum sensing on performance of salt-tolerance aerobic granular sludge: linking extracellular polymeric substances and microbial community. Biodegradation (IF 2.805) Pub Date : 2019-07-24 Cheng Li,Wei Li,Hui Li,Meng Hou,Xiao Wu,Jin-Long Zhuang,Yong-di Liu
Aerobic granular sludge (AGS) technology is generally negatively affected by the salinity in high saline organic wastewater. The effect of salinity on organic pollutants removal of AGS was studied in three parallel sequencing batch reactors. The results indicated that the performance of reactors operating at relative low salinity (1%) remained stable. However, at medium salinity (2%) and higher salinity
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Effects of chitin and temperature on sub-Arctic soil microbial and fungal communities and biodegradation of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) and 2,4-dinitrotoluene (DNT). Biodegradation (IF 2.805) Pub Date : 2019-06-27 Fiona H Crocker,Carina M Jung,Karl J Indest,Steven J Everman,Matthew R Carr
Climate warming in the Arctic and the thawing of frozen carbon stocks are leading to uncertainty as to how bacterial communities will respond, including pollutant degrading bacteria. This study investigated the effects of carbon stimulation and temperature on soil microbial community diversity and explosive biodegradation in two sub-Arctic soils. Chitin as a labile carbon source stimulated overall
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The potential application of biosurfactant produced by Pseudomonas aeruginosa TGC01 using crude glycerol on the enzymatic hydrolysis of lignocellulosic material. Biodegradation (IF 2.805) Pub Date : 2019-06-27 Káren G O Bezerra,Ulrich V R Gomes,Ricardo O Silva,Leonie A Sarubbo,Ester Ribeiro
The production of biosurfactant by Pseudomonas aeruginosa TGC01 using crude glycerol and sodium nitrate as the sole substrate and nitrogen source, respectively, was investigated using two mineral culture media. Two inoculum sizes (5 and 10% v/v) and two volumes of the culture medium (50 and 100 mL) in 500 mL Erlenmeyer flask also were used. Enzymatic hydrolyses of waste office paper (WOP), newspaper
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Degradation of 3-fluoroanilne by Rhizobium sp. JF-3. Biodegradation (IF 2.805) Pub Date : 2019-06-25 Zhi-Qing Zhao,Tu-Cai Zheng,Wen-Jing Zhang,Xiao-Li Shen,Liang Lv,Yan-Mei Li
The interest of fluoroanilines in the environment is due to their extensive applications in industry and their low natural biodegradability. A pure bacterial strain capable of degrading 3-fluoroaniline (3-FA) as the sole source of carbon and energy was isolated from a sequencing batch reactor operating for the treatment of 3-FA. The strain (designated as JF-3) was identified by 16S rRNA gene analysis
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Microbial reduction of bromate: current status and prospects. Biodegradation (IF 2.805) Pub Date : 2019-06-24 Xinyue Lv,Dan Wang,Waheed Iqbal,Bo Yang,Yanping Mao
Bromate is a disinfection byproduct (DBP) that forms during the ozonation of bromide-containing natural water, which may cause health risks to humans. In this review, we provide an overview of the mechanism of bromate formation, microbial communities and bioreactors that are responsible for bromate reduction. Bromate can be formed through two pathways of bromide oxidation by ozone or by ·OH, and it
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Treatment of oily effluent using a low-cost biosurfactant in a flotation system. Biodegradation (IF 2.805) Pub Date : 2019-06-24 Elias J Silva,Ivison A Silva,Pedro P F Brasileiro,Priscilla F Correa,Darne G Almeida,Raquel D Rufino,Juliana M Luna,Valdemir A Santos,Leonie A Sarubbo
Fuel and lubricating oil leaks produce an oily wastewater that creates an environmental problem for industries. Dissolved air flotation (DAF) has been successfully employed for the separation of oily contaminants. Collectors constitute an auxiliary tool in the DAF process that enhances the separation efficiency by facilitating the adhesion of the contaminant particles. The use of biosurfactants as
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Biofilm microbial composition changes due to different surface chemical modifications of activated carbon cloths in the biotransformation of 4-nitrophenol. Biodegradation (IF 2.805) Pub Date : 2019-06-11 J P García-Rodríguez,H J Amezquita-Garcia,C Escamilla-Alvarado,J R Rangel-Mendez,K Gutiérrez-García
AbstractActivated carbon cloths (ACCs) were used as biofilms supports in the anaerobic biotransformation of 4-nitrophenol (4NP). As received ACC material (AW) was oxidized with HNO3 (OX) and then functionalized with anthraquinone-2,6-disulfonate (AQ). The three ACCs were packed in hybrid UASB reactors and seeded with anaerobic granular sludge for biotransformation experiments. The results indicated
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A challenge in anaerobic digestion of swine wastewater: recalcitrance and enhanced-degradation of dietary fibres. Biodegradation (IF 2.805) Pub Date : 2019-05-23 Zhuo Zeng,Ping Zheng,Cheng Shi,Meng Zhang,Yiyu Li,Wudi Zhang,Shengdao Shan
Dietary fibres are main substances in the pig’s feed. Because of the recalcitrance, they could enter swine wastewater and become a serious obstruction factor for the anaerobic digestion process. In this work, three dietary fibres abundant in pig feedstocks: Wheat Bran Fibre (WBF), Alfalfa Fibre (AF) and Rice Chaff Fibre (RCF) were chosen and their anaerobic degradability was determined. The results
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Bioprocess optimization and production of biosurfactant from an unexplored substrate: Parthenium hysterophorus. Biodegradation (IF 2.805) Pub Date : 2019-05-18 Sabarinathan Devaraj,Poorna Chandrika Sabapathy,Lavanya Nehru,Kathirvel Preethi
Biosurfactants are one among the best alternative for synthetic surfactants that are exploited by many researchers. Several agro wastes help to reduce the cost biosurfactants by being renewable and economical. The present research focuses on the biosurfactant production from Pseudomonas mosselii utilizing Parthenium hysterophorus as a relatively cheap substrate. P. hysterophorus being a hazardous weed
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Degradation of N-nitrosodimethylamine and its amine precursors by cumene-induced Rhodococcus sp. strain L4. Biodegradation (IF 2.805) Pub Date : 2019-05-14 Warangkana Na-Phatthalung,Charongpun Musikavong,Oramas Suttinun
N-nitrosodimethylamine (NDMA) is a potential carcinogen that is produced as a disinfection by-product of chloramination or chlorination process in water and wastewater treatment systems. The ability of the dioxygenase-expressing bacteria, Rhodococcus sp. strain L4, to degrade NDMA after induction with cumene was examined in the presence and absence of its potential precursors. Dimethylamine (DMA),
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Characterization and application of a biosurfactant isolated from Candida utilis in salad dressings. Biodegradation (IF 2.805) Pub Date : 2019-05-14 J M Campos,T L M Stamford,L A Sarubbo
This study aimed at characterizing a biosurfactant from Candida utilis, and use it in the preparation of salad dressings. The biosurfactant was produced in mineral medium supplemented with 6% glucose and 6% waste frying canola oil. The crude biosurfactant was then tested for stability in different conditions of pH, salt concentration, heating time and temperature. The critical micelle dilution, chemical
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Evaluation of methanotrophic bacterial communities capable of biodegrading trichloroethene (TCE) in acidic aquifers. Biodegradation (IF 2.805) Pub Date : 2019-04-11 Yiru Shao,Paul B Hatzinger,Sheryl H Streger,Rachael T Rezes,Kung-Hui Chu
AbstractWhile bioremediation technologies for trichloroethene (TCE), a suspected carcinogen, have been successfully demonstrated in neutral pH aquifers, these technologies are often ineffective for remediating TCE contamination in acidic aquifers (i.e., pH < 5.5). Acidophilic methanotrophs have been detected in several low pH environments, but their presence and potential role in TCE degradation in
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Production of novel rhamnolipids via biodegradation of waste cooking oil using Pseudomonas aeruginosa MTCC7815. Biodegradation (IF 2.805) Pub Date : 2019-04-01 Swati Sharma,Poulami Datta,Birendra Kumar,Pankaj Tiwari,Lalit M Pandey
In this paper, Pseudomonas aeruginosa MTCC7815, a biosurfactant producing strain was studied for its ability to utilize waste cooking oil (WCO) as a sole carbon source for the production of biosurfactant. Culture conditions were optimized based on surface tension reduction and biomass concentration. The obtained biosurfactant was characterized using 1H NMR, FTIR, LC–MS, and MALDI-TOF techniques. The
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Degradation of 3,5,6-trichloro-2-pyridinol by a microbial consortium in dryland soil with anaerobic incubation. Biodegradation (IF 2.805) Pub Date : 2019-03-30 Shenghui Wang,Chen Zhang,Zhiwei Lv,Huiming Huang,Xueting Cao,Zhifeng Song,Mingzhu Shao
Biodegradation of 3,5,6-trichloro-2-pyridinol (TCP) in drylands is an important biological process of detoxification. Flooding in drylands can result in the formation of anaerobic habitats. However, little is known about the microbial metabolism of TCP in dryland soil under anaerobic conditions. Here, chlorpyrifos-contaminated dryland soil was incubated to enrich the TCP-degrading microbial consortium
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Identification of naphthalene carboxylase subunits of the sulfate-reducing culture N47. Biodegradation (IF 2.805) Pub Date : 2019-03-15 J S Koelschbach,H Mouttaki,J Merl-Pham,M E Arnold,R U Meckenstock
Expanding industrialization and the associated usage and production of mineral oil products has caused a worldwide spread of polycyclic aromatic hydrocarbons. These pollutants accumulate and persist under anoxic conditions but little is known about the biochemical reactions catalyzing their anaerobic degradation. Recently, carboxylation of naphthalene was demonstrated for the sulfate-reducing culture
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Impact of primary carbon sources on microbiome shaping and biotransformation of pharmaceuticals and personal care products. Biodegradation (IF 2.805) Pub Date : 2019-02-28 Karen Rossmassler,Sunah Kim,Corey D Broeckling,Sarah Galloway,Jessica Prenni,Susan K De Long
Knowledge of the conditions that promote the growth and activity of pharmaceutical and personal care product (PPCP)-degrading microorganisms within mixed microbial systems are needed to shape microbiomes in biotreatment reactors and manage process performance. Available carbon sources influence microbial community structure, and specific carbon sources could potentially be added to end-of-treatment
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Role of hydrogen (H2) mass transfer in microbiological H2-threshold studies. Biodegradation (IF 2.805) Pub Date : 2019-02-20 Fatih Karadagli,Andrew K Marcus,Bruce E Rittmann
Gas-to-liquid mass transfer of hydrogen (H2) was investigated in a gas–liquid reactor with a continuous gas phase, a batch liquid phase, and liquid mixing regimes relevant to assessing kinetics of microbial H2 consumption. H2 transfer was quantified in real-time with a H2 microsensor for no mixing, moderate mixing [100 rotations per minute (rpm)], and rapid mixing (200 rpm). The experimental results
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Biodegradability of legacy crude oil contamination in Gulf War damaged groundwater wells in Northern Kuwait. Biodegradation (IF 2.805) Pub Date : 2019-02-06 Melanie C Bruckberger,Matthew J Morgan,Tom Walsh,Trevor P Bastow,Henning Prommer,Amitabha Mukhopadhyay,Anna H Kaksonen,Greg Davis,Geoffrey J Puzon
During the 1991 Gulf War, oil wells in the oil fields of Kuwait were set aflame and destroyed. This resulted in severe crude oil pollution of the countries only fresh water aquifers. Here, for the first time the natural attenuation and biodegradation of the persisting groundwater contamination was investigated to assess potential processes in the aquifer. Biodegradation experiments were conducted under
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Methane utilization in aerobic methane oxidation coupled to denitrification (AME-D): theoretical estimation and effect of hydraulic retention time (HRT). Biodegradation (IF 2.805) Pub Date : 2019-02-05 Kwanhyoung Lee,Oh Kyung Choi,Young Kim,Jeryang Park,Jae Woo Lee
Even though aerobic methane-oxidation coupled to denitrification (AME-D) has been extensively studied, the exact estimation of CH4 utilization during this process still requires better understanding because effective utilization of CH4 is essential in denitrification performance, CH4 emission and economy. This study presents the effect of hydraulic retention time (HRT) on CH4 utilization in an AME-D
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Recovery of unstable digestion of vegetable waste by adding trace elements using the bicarbonate alkalinity to total alkalinity ratio as an early warning indicator. Biodegradation (IF 2.805) Pub Date : 2019-02-01 Dong Li,Juan Sun,Qin Cao,Yichao Chen,Xiaofeng Liu,Yi Ran
Vegetable waste (VW) is highly perishable and susceptible to acidification during anaerobic digestion, which inhibits biogas production. Effective process monitoring, diagnosis and control are necessary to maintain stable anaerobic digestion at a high organic loading rate (OLR). Continuous mesophilic digestion was conducted at OLRs of 0.5, 1.0, 1.5, 2.0, 3.0, 3.5 and 4.0 g volatile solids (VS)/(L d)
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Antibacterial, anti-adherent and cytotoxic activities of surfactin(s) from a lipolytic strain Bacillus safensis F4. Biodegradation (IF 2.805) Pub Date : 2019-01-01 Faten Abdelli,Marwa Jardak,Jihene Elloumi,Didier Stien,Slim Cherif,Sami Mnif,Sami Aifa