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You searched for: Journal Environmental research Remove constraint Journal: Environmental research Journal name Environmental research Remove constraint Journal name: Environmental research Subject activated sludge Remove constraint Subject: activated sludge Subject term activated sludge Remove constraint Subject term: activated sludge
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1. Alkaline aided thermophiles pretreatment of waste activated sludge to increase short chain fatty acids production: Microbial community evolution by alkaline on hydrolysis and fermentation

Author:
Chun-Xue Yang; Shuai Zhao; Ze-Chong Guo; Wen-Zong Liu; Ling Wang; Shao-Peng Yu; Bao-Ling Liu; Xue Cong
Source:
Environmental research 2020 v.186 pp. 109503
ISSN:
0013-9351
Subject:
Acidobacteria; Caloramator; acidification; activated sludge; chemical oxygen demand; fermentation; heat tolerance; hydrolysis; microbial communities; proteins; proteolysis; short chain fatty acids; thermophilic bacteria
Abstract:
... Adding alkaline into an anaerobic waste activated sludge (WAS) fermentation with thermophilic bacteria pretreatment could efficiently improve short-chain fatty acids (SCFAs) accumulation to 3550 ± 120 mg COD/L. The acidification rate in combined test was 21.2%, while that was 15.6% and 10.7% in sole thermophilic bacteria pretreatment and control tests respectively. Four distinct groups of microbes ...
DOI:
10.1016/j.envres.2020.109503

2. Anaerobic digestion of thickened waste activated sludge under calcium hypochlorite stress: Performance stability and microbial communities

Author:
Najiaowa Yu; Anqi Mou; Huijuan Sun; Yang Liu
Source:
Environmental research 2022 v.212 pp. 113441
ISSN:
0013-9351
Subject:
activated sludge; anaerobic digestion; biomass; calcium hypochlorite; microbial communities; microbiome; research
Abstract:
... Hypochlorite pretreatment has been proven effective in enhancing waste activated sludge (WAS) anaerobic digestion performances recently. In this study, two semi-continuous anaerobic sequencing batch reactors (ASBRs), one fed with Ca(ClO)₂ pretreated thickened WAS (TWAS) and one with raw TWAS, were operated at mesophilic conditions (35 °C) for 145 days. Three loading shocks were introduced to each ...
DOI:
10.1016/j.envres.2022.113441

3. Biochar stimulates growth of novel species capable of direct interspecies electron transfer in anaerobic digestion via ethanol-type fermentation

Author:
Yang Li; Meishan Liu; Xinrong Che; Chong Li; Dandan Liang; Hao Zhou; Lifen Liu; Zhiqiang Zhao; Yaobin Zhang
Source:
Environmental research 2020 v.189 pp. 109983
ISSN:
0013-9351
Subject:
Fourier transform infrared spectroscopy; Geobacter; activated sludge; anaerobic digestion; biochar; electron transfer; energy; fermentation; methane; methane production; methanogens; oxidation; research; sulfur
Abstract:
... The study presented here was to evaluate the effects of combining biological ethanol-type fermentation pretreatment (BEFP) with biochar on the growth of novel species capable of direct interspecies electron transfer (DIET) and methanogenesis in anaerobic co-digestion (AcoD) of kitchen wastes (KWs) and waste activated sludge (WAS). The results showed that, after BEFP, the genera capable of extracel ...
DOI:
10.1016/j.envres.2020.109983

4. Biodegradation of skatole by Burkholderia sp. IDO3 and its successful bioaugmentation in activated sludge systems

Author:
Qiao Ma; Hui Qu; Nan Meng; Shuzhen Li; Jingwei Wang; Shengwei Liu; Yuanyuan Qu; Yeqing Sun
Source:
Environmental research 2020 v.182 pp. 109123
ISSN:
0013-9351
Subject:
Burkholderia; activated sludge; adenosine triphosphate; bacterial communities; bioaugmentation; biodegradation; biological treatment; cost effectiveness; enzyme activity; enzymes; gene ontology; genes; human health; livestock; odors; oxidative phosphorylation; pH; poultry manure; ribosomal RNA; sequence analysis; skatole; species diversity; temperature; wastewater; xenobiotics
Abstract:
... Skatole is the key malodorous compound in livestock and poultry waste and wastewater with a low odor threshold. It not only causes serious nuisance to residents and workers, but also poses threat to the environment and human health due to its biotoxicity and recalcitrant nature. Biological treatment is an eco-friendly and cost-effective approach for skatole removal, while the bacterial resources a ...
DOI:
10.1016/j.envres.2020.109123

5. Biosorption of heavy metals from aqueous solutions using activated sludge, Aeromasss hydrophyla, and Branhamella spp based on modeling with GEOCHEM

Author:
Tonni Agustiono Kurniawan; Waihung Lo; Mohd Hafiz Dzarfan Othman; Hui Hwang Goh; Kok-Keong Chong
Source:
Environmental research 2022 v.214 pp. 114070
ISSN:
0013-9351
Subject:
Moraxella subgenus Branhamella; activated sludge; adsorbents; adsorption; biosorption; heavy metals; laws and regulations; pH; prediction; research; sewage sludge; sewage treatment; thermodynamics; wastewater
Abstract:
... This work tests the technical applicability of sewage sludge and isolated dead cells of Aeromasss hydrophyla and Branhamella spp for the elimination of inorganic pollutants such as Zn(II), Pb(II), Cd(II), and/or Cu(II) using synthetic wastewater with their initial concentrations of 100 mg/L, respectively. The sludge samples were collected from local sewage treatment plants. The effects of dose and ...
DOI:
10.1016/j.envres.2022.114070

6. C12-HSL is an across-boundary signal molecule that could alleviate fungi Galactomyces's filamentation: A new mechanism on activated sludge bulking

Author:
Xin Lu; Yue Wang; Congli Chen; Zhixuan Feng; Yang Huo; Dandan Zhou
Source:
Environmental research 2022 v.204 pp. 111823
ISSN:
0013-9351
Subject:
Galactomyces; activated sludge; bioactive properties; biosynthesis; evolution; fungi; hyphae; microfilaments; mitogen-activated protein kinase; research; spore germination
Abstract:
... Fungal bulking is caused by fungi excessive growth and morphological changes, resulting from the evolution toward fungi dominant activated sludge. Communication across fungi and bacteria boundary that mediated by bacterial signal molecules (SMs) probably is the central induce caused fungal bulking occurrence. In this work, it intended to identify the bacterial SM that affected fungal bulking, and ...
DOI:
10.1016/j.envres.2021.111823

7. Can activated sludge treatments and advanced oxidation processes remove organophosphorus flame retardants?

Author:
Joyce Cristale; Dayana D. Ramos; Renato F. Dantas; Amilcar Machulek Junior; Silvia Lacorte; Carme Sans; Santiago Esplugas
Source:
Environmental research 2016 v.144 pp. 11-18
ISSN:
0013-9351
Subject:
activated sludge; biphenyl; effluents; flame retardants; oxidation; ozone; phosphates; photolysis; ultraviolet radiation; wastewater; wastewater treatment; Spain
Abstract:
... This study aims to determine the occurrence of 10 OPFRs (including chlorinated, nonchlorinated alkyl and aryl compounds) in influent, effluent wastewaters and partitioning into sludge of 5 wastewater treatment plants (WWTP) in Catalonia (Spain). All target OPFRs were detected in the WWTPs influents, and the total concentration ranged from 3.67µgL⁻¹ to 150µgL⁻¹. During activated sludge treatment, m ...
DOI:
10.1016/j.envres.2015.10.008

8. Characteristics of bacterial populations in an industrial scale petrochemical wastewater treatment plant: Composition, function and their association with environmental factors

Author:
Qinghong Wang; Jiahao Liang; Simin Zhang; Brandon A. Yoza; Qing X. Li; Yali Zhan; Huangfan Ye; Peng Zhao; Chunmao Chen
Source:
Environmental research 2020 v.189 pp. 109939
ISSN:
0013-9351
Subject:
Acidobacteria; Bacteroidetes; Chloroflexi; Planctomycetes; Proteobacteria; acidification; activated sludge; bacterial communities; biochemical oxygen demand; biochemical pathways; biofilters; biological treatment; caprolactam; community structure; hydrolysis; naphthalene; petroleum; phylogeny; research; toluene; total nitrogen; variance; wastewater; wastewater treatment
Abstract:
... The efficiency of petrochemical wastewater biological treatment is dependent upon complex bacterial communities. A well understanding of the structure and function of bacterial community and their association with environmental variables is essential for the elucidation of contaminant removal mechanisms and optimization of wastewater treatment processes. In this study, the bacterial communities an ...
DOI:
10.1016/j.envres.2020.109939
CHORUS:
10.1016/j.envres.2020.109939

9. Coronaviruses and SARS-CoV-2 in sewerage and their removal: Step by step in wastewater treatment plants

Author:
Paola Foladori; Francesca Cutrupi; Maria Cadonna; Serena Manara
Source:
Environmental research 2022 v.207 pp. 112204
ISSN:
0013-9351
Subject:
Severe acute respiratory syndrome coronavirus 2; activated sludge; adsorption; detection limit; digestion; disinfection; feces; genomics; hydrophobicity; membrane bioreactors; pathogenicity; predation; research; temperature; ultrafiltration; ultraviolet radiation; viruses; wastewater; wastewater treatment; water reuse
Abstract:
... The fate of Coronaviruses (CoVs) and in particular SARS-CoV-2 in wastewater treatment plants (WWTPs) has not been completely understood yet, but an adequate knowledge on the removal performances in WWTPs could help to prevent waterborne transmission of the virus that is still under debate. CoVs and SARS-CoV-2 are discharged from faeces into the sewer network and reach WWTPs within a few hours. Thi ...
DOI:
10.1016/j.envres.2021.112204

10. Correlating black soldier fly larvae growths with soluble nutrients derived from thermally pre-treated waste activated sludge

Author:
Chin Seng Liew; Guo Ren Mong; Eman A. Abdelfattah; Ratchaprapa Raksasat; Hemamalini Rawindran; Worapon Kiatkittipong; Mardawani Mohamad; Anita Ramli; Normawati M. Yunus; Man Kee Lam; Wen Da Oh; Jun Wei Lim
Source:
Environmental research 2022 v.210 pp. 112923
ISSN:
0013-9351
Subject:
Hermetia illucens; activated sludge; carbohydrates; chemical oxygen demand; models; palatability; polymers; research; temperature
Abstract:
... Black soldier fly larvae (BSFL) have been deployed to valorize various organic wastes. Nonetheless, its growth rate whilst being offered with waste activated sludge (WAS) is not promising, likely by virtue of the presence of extracellular polymeric substances’ structure in WAS. In this work, the WAS were first thermally pre-treated under different treatment temperatures and durations before being ...
DOI:
10.1016/j.envres.2022.112923

11. Current operation state of wastewater treatment plants in urban China

Author:
Jingbing Zhang; Yuting Shao; Hongchen Wang; Guohua Liu; Lu Qi; Xianglong Xu; Shuai Liu
Source:
Environmental research 2021 v.195 pp. 110843
ISSN:
0013-9351
Subject:
activated sludge; electric energy consumption; energy; industry; issues and policy; questionnaires; research; surveys; wastewater treatment; China
Abstract:
... Wastewater treatment plants (WWTPs) in urban China generally face operational difficulties. To comprehensively analyze the current operation status and determine the factors that caused difficulties in urban domestic WWTPs, we conducted a questionnaire survey, and 18 operating conditions of scale-level WWTPs in seven regions in China were investigated. The research results showed that, of the 467- ...
DOI:
10.1016/j.envres.2021.110843

12. Degradation of triclosan and triclocarban and formation of transformation products in activated sludge using benchtop bioreactors

Author:
Dana L. Armstrong; Nuria Lozano; Clifford P. Rice; Mark Ramirez; Alba Torrents
Source:
Environmental research 2018 v.161 no. pp. 17-25
ISSN:
0013-9351
Subject:
2,4-dichlorophenol; activated sludge; anti-infective agents; bioreactors; liquids; municipal wastewater; temperature; triclosan; wastewater treatment
Abstract:
... Benchtop bioreactors were run aerobically with activated sludge samples collected from a large municipal wastewater treatment plant (WWTP) to understand how increased hydraulic retention time (HRT), sludge retention time (SRT), and varying treatment temperatures (21°C and 30°C) impact concentrations of the endocrine disrupting antimicrobials triclosan (TCS), triclocarban (TCC), and their transform ...
DOI:
10.1016/j.envres.2017.10.048
CHORUS:
10.1016/j.envres.2017.10.048

13. Diclofenac removal from the wastewater using activated sludge and analysis of multidrug resistant bacteria from the sludge

Author:
Mohamed S. Elshikh; Dina S. Hussein; Fatimah S. Al-khattaf; Rabab Ahmed Rasheed El-Naggar; Khalid S. Almaary
Source:
Environmental research 2022 v.208 pp. 112723
ISSN:
0013-9351
Subject:
Enterobacter; Escherichia coli; Klebsiella pneumoniae; activated sludge; adsorption; anti-inflammatory agents; diclofenac; methicillin-resistant Staphylococcus aureus; models; multiple drug resistance; pH; research; sewage sludge; wastewater
Abstract:
... Diclofenac is an anti-inflammatory drug and has been frequently detected from the wastewater. In the present study, factors affecting diclofenac adsorption on sewage sludge was evaluated. At 1 mg/L initial diclofenac concentration, more than 80% diclofenac removal was achieved. Adsorption increased at higher concentration (100 mg/L concentration) and more than 99% diclofenac was adsorbed from the ...
DOI:
10.1016/j.envres.2022.112723

14. Effects of ZnO nanoparticles on flocculation and sedimentation of activated sludge in wastewater treatment process

Author:
Jinyu Ye; Huan Gao; Junkang Wu; Ran Yu
Source:
Environmental research 2021 v.192 pp. 110256
ISSN:
0013-9351
Subject:
activated sludge; dose response; flocculation; fluorescence; polymers; polysaccharides; research; secretion; tyrosine; wastewater treatment
Abstract:
... Despite the behaviors of ZnO nanoparticles (ZnO NPs) in wastewater treatment processes have been widely explored, the impacts of ZnO NPs on the activated sludge's flocculation and sedimentation performances for solid-liquid separation have rarely been involved yet. In this study, ZnO NPs were observed to exert a dose-dependent negative effect on the sludge's flocculation performance but did not si ...
DOI:
10.1016/j.envres.2020.110256

15. Effects of dissimilatory iron reduction on acetate production from the anaerobic fermentation of waste activated sludge under alkaline conditions

Author:
Zisheng Zhao; Yang Li; Zhiqiang Zhao; Qilin Yu; Yaobin Zhang
Source:
Environmental research 2020 v.182 pp. 109045
ISSN:
0013-9351
Subject:
acetates; acidification; activated sludge; anaerobic digesters; anaerobic digestion; butyrates; fermentation; hydrolysis; iron; iron oxides; methanogens; pH; short chain fatty acids
Abstract:
... Anaerobic digestion of waste activated sludge (WAS) to produce acetate has recently attracted growing interest, while the slow hydrolytic acidification of sludge and the consumption of acetate by methanogens both decrease the yield of acetate. In this study, Fe₃O₄ was added to a WAS anaerobic digester under alkaline conditions (pH = 10). The concentration of short-chain fatty acids (SCFA) during W ...
DOI:
10.1016/j.envres.2019.109045

16. Effects of influent immigration and environmental factors on bacterial assembly of activated sludge microbial communities

Author:
Hongwei Sun; Huanhuan Chang; Wei Tang; Xingwei Zhang; Hao Yang; Feng Zhang; Yanxiang Zhang
Source:
Environmental research 2022 v.205 pp. 112426
ISSN:
0013-9351
Subject:
activated sludge; altitude; ammonium nitrogen; chemical oxygen demand; community structure; immigration; oxygen; pH; quantitative analysis; research; temperature; total nitrogen; total phosphorus; wastewater treatment
Abstract:
... The functional mechanism of microbial assembly of activated sludge (AS) in urban wastewater treatment plants (UWTPs) remains unclear. A comprehensive quantitative evaluation of the contribution of influent immigration and environmental factors to AS community composition requires investigation. In this study, the microbial characteristics of six full-scale UWTPs with different influent composition ...
DOI:
10.1016/j.envres.2021.112426

17. Effects of ultrasonic treatment on the pyrolysis characteristics and kinetics of waste activated sludge

Author:
Hongyu Jia; Bingkun Liu; Xiuxia Zhang; Jie Chen; Wenhai Ren
Source:
Environmental research 2020 v.183 pp. 109250
ISSN:
0013-9351
Subject:
activated sludge; activation energy; biomass; kinetics; lignocellulose; pyrolysis; temperature; thermogravimetry; ultrasonic treatment; ultrasonics; weight loss
Abstract:
... In this study, physicochemical analysis, thermogravimetric analysis, and kinetic analysis were used to investigate the effects of ultrasonic treatment on waste activated sludge (WAS), with emphasis on its kinetic parameters and pyrolysis behaviors. Thermogravimetric analysis results indicated that the pyrolysis of ultrasonic WAS might be divided into three stages. The main pyrolysis behavior occur ...
DOI:
10.1016/j.envres.2020.109250

18. Electron transfer pathways and kinetic analysis of cathodic simultaneous nitrification and denitrification process in microbial fuel cell system

Author:
Feng Ling; Yongze Lu; Ce Wang; Zhan Yuan; Ran Yu; Guangcan Zhu
Source:
Environmental research 2020 v.186 pp. 109505
ISSN:
0013-9351
Subject:
activated sludge; ammonium nitrogen; biocathodes; biotransformation; chemical oxygen demand; denitrification; dissolved oxygen; electricity; electron transfer; electrons; kinetics; microbial fuel cells; nitrification; nitrogen; organic carbon; oxidation; oxygen; prediction; wastewater treatment
Abstract:
... Microbial fuel cell (MFC) is an innovative bioconversion technology for wastewater treatment accompanied with electricity recovery. In this study, a kinetic model was developed base on Activated Sludge Model No.1 (ASM1) to describe electron transfer pathways during the simultaneous nitrification and denitrification (SND) process in the biocathode system of a dual-chamber MFC. The batch running of ...
DOI:
10.1016/j.envres.2020.109505

19. Enhanced degradation of glucocorticoids, a potential COVID-19 remedy, by co-fermentation of waste activated sludge and animal manure: The role of manure type and degradation mechanism

Author:
Ai Zhang; Jinling He; Yuye Shen; Xianbao Xu; Yanan Liu; Yongmei Li; Shimin Wu; Gang Xue; Xiang Li; Jacek Makinia
Source:
Environmental research 2021 v.201 pp. 111488
ISSN:
0013-9351
Subject:
COVID-19 infection; acidification; activated sludge; anaerobes; anaerobic digestion; betamethasone; biomass; calcium; cortisol; dissolved organic carbon; fermentation; hydrogenation; hydrolysis; hydroxylation; lipophilicity; methylation; pH; pollutants; pollution; poultry manure; propionic acid; research; toxicity; value added; volatile fatty acids; waste reduction
Abstract:
... Waste activated sludge (WAS) and animal manure are two significant reservoirs of glucocorticoids (GCs) in the environment. However, GC degradation during anaerobic digestion (AD) of WAS or animal manure has rarely been investigated. In this study, co-fermentation of WAS and animal manure was conducted to investigate the performance of AD in controlling GC dissemination. Effects of manure type on G ...
DOI:
10.1016/j.envres.2021.111488

20. Enhancement of nitrogen and phosphorus removal, sludge reduction and microbial community structure in an anaerobic/anoxic/oxic process coupled with composite ferrate solution disintegration

Author:
Yanping Zhang; Guangping Lu; Huichun Zhang; Fen Li; Lingchong Li
Source:
Environmental research 2020 v.190 pp. 110006
ISSN:
0013-9351
Subject:
activated sludge; biodegradability; carbon; community structure; denitrification; microbial communities; nitrogen; phosphorus; research
Abstract:
... Waste activated sludge (WAS) was disintegrated by composite ferrate solution (CFS) in this work, and the effect of CFS disintegrated sludge supernatant (CDSS), as a supplementary carbon source, on enhancement of nitrogen and phosphorus removal and sludge reduction in an AAO-CFSSDR (Anaerobic/Anoxic/Oxic combined with CFS-Sludge disintegration reactor) process was evaluated. The results showed that ...
DOI:
10.1016/j.envres.2020.110006

21. Enhancing waste activated sludge dewaterability by reducing interaction energy of sludge flocs

Author:
Wenbo Yu; Yanlei Wan; Yu Wang; Yuwei Zhu; Shuangyi Tao; Qi Xu; Keke Xiao; Sha Liang; Bingchuan Liu; Huijie Hou; Jingping Hu; Jiakuan Yang
Source:
Environmental research 2021 v.196 pp. 110328
ISSN:
0013-9351
Subject:
Gibbs free energy; activated sludge; calcium; electrostatic interactions; energy; hydrophilicity; hydrophobicity; research
Abstract:
... How to efficiently improve waste activated sludge (WAS) dewaterability is a common challenge in WAS treatment and management throughout world. The interaction energy of sludge flocs is of great importance for sludge dewaterability. In this study, the relationship among the repulsive force of sludge flocs, hydrophilic/hydrophobic characteristics of sludge flocs, and sludge dewaterability have been ...
DOI:
10.1016/j.envres.2020.110328

22. Establishment and differential performance of hyperthermophilic microbial community during anaerobic self-degradation of waste activated sludge

Author:
Li-Jie Wu; Xiao-Xiao Li; Zhi-Feng Qin; Fan Yang; Quan Zhou; Rui-Peng Ren; Yong-Kang Lyu
Source:
Environmental research 2020 v.191 pp. 110035
ISSN:
0013-9351
Subject:
Archaea; Coprothermobacter; acclimation; activated sludge; anaerobic digestion; hydrolysis; inoculum; methane production; methanogens; microbial communities; proteolysis; research; solubilization; temperature
Abstract:
... Hyperthermophilic anaerobic digestion, especially at 70 °C, has drawn wide attention. In order to acquire the inoculum and digestion characteristics, batch acclimation and continuous operation experiments were conducted under hyperthermophilic (70 °C), thermophilic (55 °C) and mesophilic (35 °C) conditions, respectively. Archaea at each temperature was successfully enriched from the sole-source wa ...
DOI:
10.1016/j.envres.2020.110035

23. Estimating the minimum number of SARS-CoV-2 infected cases needed to detect viral RNA in wastewater: To what extent of the outbreak can surveillance of wastewater tell us?

Author:
Pei-Ying Hong; Andri Taruna Rachmadi; David Mantilla-Calderon; Mohsen Alkahtani; Yasir M. Bashawri; Hamed Al Qarni; Kathleen M. O'Reilly; Jianqiang Zhou
Source:
Environmental research 2021 v.195 pp. 110748
ISSN:
0013-9351
Subject:
RNA; Severe acute respiratory syndrome coronavirus 2; activated sludge; epidemiology; genes; hospitals; monitoring; nucleocapsid; pH; research; septic systems; total organic carbon; viruses; wastewater; wastewater treatment; water quality
Abstract:
... There is increasing interest in wastewater-based epidemiology (WBE) of SARS-CoV-2 RNA to serve as an early warning system for a community. Despite successful detection of SARS-CoV-2 RNA in wastewaters sampled from multiple locations, there is still no clear idea on the minimal number of cases in a community that are associated with a positive detection of the virus in wastewater. To address this k ...
DOI:
10.1016/j.envres.2021.110748

24. Explore the sludge stabilization process in sludge drying bed by modeling study from mesocosm experiments

Author:
Jiajie He; Zhongbing Chen; Mark Dougherty; Shanshan Hu; Xingtao Zuo
Source:
Environmental research 2021 v.195 pp. 110837
ISSN:
0013-9351
Subject:
activated sludge; aeration; biodegradability; dewatering; digestion; metabolism; research
Abstract:
... Sludge drying bed (SDB) treatment is a valuable alternative to conventional sludge treatment methods. However, changes in sludge hydrotexture during dewatering present a barrier for direct modeling of the SDB process. This study proposes a modeling strategy to simulate the sludge stabilization process in SDB treatment by separating sludge dewatering and sludge solids stabilization into independent ...
DOI:
10.1016/j.envres.2021.110837

25. Highly efficient ammonium removal through nitrogen assimilation by a hydrogen-oxidizing bacterium, Ideonella sp. TH17

Author:
Li-Juan Zhang; Yong Xie; Ling-Yun Ding; Xue-Jiao Qiao; Hu-Chun Tao
Source:
Environmental research 2020 v.191 pp. 110059
ISSN:
0013-9351
Subject:
Ideonella; activated sludge; ammonium; bacteria; bacterial biomass; cell growth; denitrification; municipal wastewater; nitrates; nitrogen; research; sewage treatment; wastewater treatment
Abstract:
... Ideonella sp. TH17, an autotrophic hydrogen-oxidizing bacterium (HOB), was successfully enriched and isolated from activated sludge in a domestic wastewater treatment plant (WWTP). Batch experiments were conducted to identify the cell growth and ammonium (NH₄⁺-N) removal, and to verify the pathways of nitrogen utilization under different conditions. At a representative NH₄⁺-N concentration of 100  ...
DOI:
10.1016/j.envres.2020.110059

26. How bioaugmentation with Comamonas testosteroni accelerates pyridine mono-oxygenation and mineralization

Author:
Ge Zhu; Yongming Zhang; Songyun Chen; Lu Wang; Zhichun Zhang; Bruce E. Rittmann
Source:
Environmental research 2021 v.193 pp. 110553
ISSN:
0013-9351
Subject:
Comamonas testosteroni; activated sludge; bioaugmentation; biodegradation; biomass; industrial wastewater; microbial communities; mineralization; pyridines; research
Abstract:
... Pyridine is a common heterocycle found in industrial wastewaters. Its biodegradation begins with a mono-oxygenation reaction, and bioaugmentation with bacteria able to carry out this mono-oxygenation is one strategy to improve pyridine removal and mineralization. Although bioaugmentation has been used to enhance the biodegradation of recalcitrant organic compounds, the specific role played by the ...
DOI:
10.1016/j.envres.2020.110553

27. Impact of the excess sludge modification with selected chemical reagents on the increase of dissolved organic substances concentration compounds transformations in activated sludge

Author:
Iwona Zawieja; Wolny Lidia; Próba Marta
Source:
Environmental research 2017 v.156 pp. 652-656
ISSN:
0013-9351
Subject:
activated sludge; ambient temperature; biodegradation; calcium hydroxide; chemical oxygen demand; hydrochloric acid; hydrogen peroxide; magnesium hydroxide; organic matter; sulfuric acid; volatile fatty acids
Abstract:
... Submission of excess sludge initial disintegration process significantly affects the efficiency of anaerobic stabilization process. Expression of increasing the concentration of organic matter in dissolved form is to increase sludge disintegration. As a result of chemical modification is an increase of the chemical oxygen demand and the concentration of volatile fatty acids. The aim of this study ...
DOI:
10.1016/j.envres.2017.04.033

28. Improving methane productivity of waste activated sludge by ultrasound and alkali pretreatment in microbial electrolysis cell and anaerobic digestion coupled system

Author:
Hongxu Bao; Hua Yang; Hao Zhang; Yichen Liu; Hongzhi Su; Manli Shen
Source:
Environmental research 2020 v.180 pp. 108863
ISSN:
0013-9351
Subject:
activated sludge; alkali treatment; anaerobic digestion; bacteria; methane; methane production; microbial electrolysis cells; ultrasonics
Abstract:
... In order to enhance the productivity of methane from the waste activated sludge (WAS), a coupled system of microbial electrolysis cell (MEC) and anaerobic digestion (AD) was proposed. In this study, alkali, ultrasound-alkali, high-temperature coupled microaeration (TM) were applied as pretreatment methods to disintegrate the WAS flocs and break bacterial cell. After ultrasound-alkali pretreatment, ...
DOI:
10.1016/j.envres.2019.108863

29. Indole metabolism by phenol-stimulated activated sludges: Performance, microbial communities and network analysis

Author:
Jing Yang; Fang Ma; Chunxiao Dai; Weize Wu; Shuling Fan; Shengyang Lian; Yuanyuan Qu
Source:
Environmental research 2022 v.207 pp. 112660
ISSN:
0013-9351
Subject:
Burkholderia; Comamonas; Pseudomonas; Thermomonas; activated sludge; cytochrome P-450; indoles; metabolism; phenol; phylogeny; research; styrene; wastewater treatment
Abstract:
... Indole and phenol often coexist in the coking wastewater, while the effects of phenol on microbial communities of indole metabolism were less explored. In this study, the microbial interactions within activated sludge microbial communities stimulated by indole (group A) or by indole and phenol (group B) were systematically investigated in sequencing batch reactors (SBRs). The results showed that t ...
DOI:
10.1016/j.envres.2021.112660

30. Influence of temperature on aerobic granular sludge formation and stability treating municipal wastewater with high nitrogen loadings

Author:
Julliana M. Araújo; Stephan Berzio; Tito Gehring; Edith Nettmann; Lourdinha Florêncio; Marc Wichern
Source:
Environmental research 2022 v.212 pp. 113578
ISSN:
0013-9351
Subject:
activated sludge; aeration; genes; inoculum; municipal wastewater; nitrates; nitrogen; oxygen; research; temperature; wastewater treatment
Abstract:
... This study investigated the influence of temperature (20 and 30 °C) on the formation and stability of aerobic granules in sequential batch reactors (SBR). Therefore, two lab-scale SBRs operated at 20 and 30 °C (SBR₂₀ and SBR₃₀) were used. The reactors were fed with municipal wastewater (CODₜ:TN:TP 100:15:1.7), leading to mean organic loading rates (OLR) of 1.3 ± 0.4 kgCODₜ m⁻³ day⁻¹. Both reactors ...
DOI:
10.1016/j.envres.2022.113578

31. Insights into the key components of bacterial assemblages in typical process units of oily wastewater treatment plants

Author:
Cong Du; Yonghui Song; Xuemei Han; Shuhu Xiao
Source:
Environmental research 2020 v.180 pp. 108889
ISSN:
0013-9351
Subject:
Bacillus (bacteria); Comamonas; Paenibacillus; Pseudomonas; Thauera; activated sludge; correspondence analysis; high-throughput nucleotide sequencing; microbial communities; oils; pH; temperature; variance; wastewater; wastewater treatment; China
Abstract:
... To compare the structure of microbial community in the oily wastewater treatment plants (OWWTPs) located in China, and to discern the impacts of environment variables on the variance of microbial community, activated sludge samples from six typical OWWTPs were taken and the structure of microbial community of these six samples were analyzed via Illumina high-throughput sequencing. 18 core genera i ...
DOI:
10.1016/j.envres.2019.108889

32. Investigation of characteristics of effluent DON derived from conventional activated sludge (CAS) and predenitrification biological removal (BNR): In terms of proteins and humic substances

Author:
Heonseop Eom; Chul Park
Source:
Environmental research 2021 v.196 pp. 110912
ISSN:
0013-9351
Subject:
activated sludge; bioassays; bioavailability; dissolved inorganic nitrogen; dissolved organic carbon; dissolved organic nitrogen; molecular weight; phytoplankton; research; wastewater; wastewater treatment
Abstract:
... Upgrading wastewater treatment plants (WWTPs) from conventional activated sludge (CAS) to predenitrification biological nutrient removal (BNR) results in improved removal of dissolved inorganic nitrogen (DIN) from wastewater. However, changes in dissolved organic nitrogen (DON) with these WWTP upgrades and their potential impacts on receiving waters have been little researched. In this study, we i ...
DOI:
10.1016/j.envres.2021.110912

33. Metagenomics and metatranscriptomics analyses of antibiotic synthesis in activated sludge

Author:
Yu Huang; Kui Zou; Taiping Qing; Bo Feng; Peng Zhang
Source:
Environmental research 2022 v.213 pp. 113741
ISSN:
0013-9351
Subject:
activated sludge; antibiotic resistance; biofilm; biosynthesis; cephalosporins; macrolides; metagenomics; penicillins; peptides; pollution; research; streptomycin; transcriptomics; wastewater treatment
Abstract:
... The generic of antibiotics is considered to be a main reason for the generation of antibiotic resistance genes (ARGs) in wastewater treatment plants (WWTPs). However, little has been reported about the antibiotic biosynthesis by activated sludge. In this study, the distribution and expression of antibiotic biosynthetic genes (ABGs) in the floc sludge and biofilm from two WWTPs were deciphered usin ...
DOI:
10.1016/j.envres.2022.113741

34. New insights into the cultivation of N, N-dimethylformamide-degrading methanogenic consortium: A long-term investigation on the variation of prokaryotic community inoculated with activated sludge

Author:
Zhe Kong; Lu Li; Tianjie Wang; Chao Rong; Yi Xue; Tao Zhang; Jiang Wu; Yu-You Li
Source:
Environmental research 2020 v.182 pp. 109060
ISSN:
0013-9351
Subject:
Archaea; activated sludge; carbon; cell growth; denitrification; denitrifying bacteria; hydrolysis; methane production; methanogens; nitrates; upflow anaerobic sludge blanket reactor
Abstract:
... The cultivation of the N, N-dimethylformamide (DMF)-degrading methanogenic consortium is considered difficult. In this study, an up-flow anaerobic sludge blanket (UASB) was inoculated with activated sludge in order to culture the DMF-degrading anaerobic sludge under a constant DMF concentration of approximately 2000 mg L⁻¹. While the UASB realized a nearly 100% degradation of DMF and a high methan ...
DOI:
10.1016/j.envres.2019.109060

35. Occurrence and removal of organophosphate esters in municipal wastewater treatment plants in Thessaloniki, Greece

Author:
Ioanna Pantelaki; Dimitra Voutsa
Source:
Environmental research 2022 v.214 pp. 113908
ISSN:
0013-9351
Subject:
activated sludge; biodegradation; chlorination; municipal wastewater; organophosphorus compounds; ozonation; phosphates; research; risk; sorption; wastewater treatment; Greece
Abstract:
... An integrate study regarding the occurrence and fate of eleven organophosphate esters (OPEs) was conducted at two wastewater treatment plants (WWTPs) in the area of Thessaloniki, Greece. Both plants employed conventional activated sludge process whereas as last treatment step the first unit use chlorination and the second one ozonation. OPEs were determined in dissolved fraction, total suspended s ...
DOI:
10.1016/j.envres.2022.113908

36. Occurrence, fate and risk assessment of BPA and its substituents in wastewater treatment plant: A review

Author:
Yu Hu; Qingqing Zhu; Xueting Yan; Chunyang Liao; Guibin Jiang
Source:
Environmental research 2019 pp. -
ISSN:
0013-9351
Subject:
Daphnia magna; activated sludge; adsorption; aquatic ecosystems; aquatic organisms; biodegradation; biofilters; developmental stages; disinfection; human health; membrane bioreactors; ozonation; pollutants; risk; risk assessment; wastewater; wastewater treatment
Abstract:
... Several bisphenol analogues (BPs) are gradually replacing BPA in many fields, following strict restrictions on the production and use of BPA. The presence of micropollutants in wastewater treatment plants (WWTPs) may pose risks to the aquatic ecosystem and human health. In this review, we outlined the occurrence and fate of BPs in WWTPs, and estimated their potential risks to the aquatic ecosystem ...
DOI:
10.1016/j.envres.2019.108732

37. Occurrence, removal and mass balance of substituted diphenylamine antioxidants in wastewater treatment plants in Northeast China

Author:
Xue Zhang; Zi-Feng Zhang; Wen-Long Li; Yi-Fan Li; Anatoly Nikolaev; Roland Kallenborn
Source:
Environmental research 2021 v.198 pp. 111291
ISSN:
0013-9351
Subject:
activated sludge; biodegradation; diphenylamine; research; sorption; wastewater treatment; China
Abstract:
... Substituted diphenylamine antioxidants (SDPAs) are additives used in various commodities and are commonly found in environmental samples. However, limited information was available on their fate and removal in wastewater treatment plants (WWTPs). This paper reports the results on the occurrence and removal efficiency of ten selected SDPAs in six WWTPs equipped with different treatment processes in ...
DOI:
10.1016/j.envres.2021.111291

38. Performance of electro-osmotic dewatering on different types of sewage sludge

Author:
Simone Visigalli; Andrea Turolla; Paolo Gronchi; Roberto Canziani
Source:
Environmental research 2017 v.157 pp. 30-36
ISSN:
0013-9351
Subject:
activated sludge; dewatering; electric field; electroosmosis; energy; membrane bioreactors; sewage sludge; water content
Abstract:
... The feasibility of pressure-driven electro-dewatering (EDW) on sludge samples taken after different biological processes, stabilisation methods or mechanical dewatering techniques was assessed. First, the influence of potential values on EDW of anaerobically and aerobically stabilised, mechanically dewatered, sludge samples was investigated. Preliminary tests carried out by applying a constant pot ...
DOI:
10.1016/j.envres.2017.05.015

39. Perylene pigment wastewater treatment by fenton-enhanced biological process

Author:
Rui-Yun Ren; Li-Hui Yang; Jing-Long Han; Hao-Yi Cheng; Fidelis Odedishemi Ajibade; Awoke Guadie; Hong-Cheng Wang; Bin Liu; Ai-Jie Wang
Source:
Environmental research 2020 v.186 pp. 109522
ISSN:
0013-9351
Subject:
Citrobacter; Pseudomonas; World Health Organization; activated sludge; anaerobic digesters; bacteria; biological treatment; carcinogenicity; carcinogens; chemical oxygen demand; community structure; cost effectiveness; microbial communities; mutagens; oxidation; pigments; pollutants; polluted soils; polycyclic aromatic hydrocarbons; wastewater; wastewater treatment
Abstract:
... Polycyclic aromatic hydrocarbons (PAHs) are regarded as priority pollutants owing to their toxic, mutagenic and carcinogenic characteristics. Perylene is a kind of 5-ring PAH with biological toxicity, and classified as a class III carcinogen by the World Health Organization (WHO). Nowadays, some of its derivatives are often used as industrial pigments. Hence, urgent attention is highly needed to d ...
DOI:
10.1016/j.envres.2020.109522

40. Pilot-scale demonstration of one-stage partial nitritation/anammox process to treat wastewater from a coal to ethylene glycol (CtEG) plant

Author:
Hong Yao; Xingcheng Zhao; Liru Fan; Fangxu Jia; Yao Chen; Weiwei Cai; Jianhua Guo
Source:
Environmental research 2022 v.208 pp. 112540
ISSN:
0013-9351
Subject:
activated sludge; aeration; ammonia; ammonium; anaerobic ammonium oxidation; biofilm; coal; ethylene glycol; industrial wastewater; kinetics; methanol; microbial communities; nitrogen; research; sustainable technology; toxicity
Abstract:
... One-stage partial nitritation/anammox (PN/A) process has been recognized as a sustainable technology to treat various domestic and industrial wastewater, due to its low aeration consumption and chemical dosage. However, there is no study to investigate the feasibility of PN/A to treat coal to ethylene glycol (CtEG) wastewater yet, which contains very complex and toxic compounds including ammonium, ...
DOI:
10.1016/j.envres.2021.112540

41. Rapid start of high-concentration denitrification and desulfurization reactors by heterotrophic denitrification sulphur-oxidising bacteria

Author:
Shuang Gao; Zhiling Li; Yanan Hou; Jun Nan; Aijie Wang; Qian Liu; Cong Huang
Source:
Environmental research 2022 v.204 pp. 111826
ISSN:
0013-9351
Subject:
Azoarcus; Pseudomonas; activated sludge; bioaugmentation; bioreactors; carbon metabolism; denitrification; desulfurization; fluorescence; inoculum; oxidation; research; sulfides; sulfur; toxicity
Abstract:
... High sulphide concentrations can be toxic to denitrifying and desulphurising microorganisms. In this study, bioaugmentation was used to solve this problem. Pseudomonas sp. gs1 can tolerate 400 mg/L sulphide and converts most of the sulphide into elemental sulphur after 4 h. A solid inoculum of Pseudomonas sp. h1 was prepared. Two reactors, that is, one with and one without inoculum, were simultane ...
DOI:
10.1016/j.envres.2021.111826

42. Rearrangements of the nitrifiers population in an activated sludge system under decreasing solids retention times

Author:
Przemyslaw Kowal; Mohamad-Javad Mehrani; Dominika Sobotka; Sławomir Ciesielski; Jacek Mąkinia
Source:
Environmental research 2022 v.214 pp. 113753
ISSN:
0013-9351
Subject:
Nitrosomonas; activated sludge; dissolved oxygen; nitrites; nitrogen; research; summer
Abstract:
... Due to the key role of nitrite in novel nitrogen removal systems, nitrite oxidizing bacteria (NOB) have been receiving increasing attention. In this study, the coexistence and interactions of nitrifying bacteria were explored at decreasing solids retention times (SRTs). Four 5-week washout experiments were carried out in laboratory-scale (V = 10 L) sequencing batch reactors (SBRs) with mixed liquo ...
DOI:
10.1016/j.envres.2022.113753

43. Review on pulp and paper activated sludge pretreatment, inhibitory effects and detoxification strategies for biovalorization

Author:
Rajwinder Kaur; Rajeshwar Dayal Tyagi; Xiaolei Zhang
Source:
Environmental research 2020 v.182 pp. 109094
ISSN:
0013-9351
Subject:
activated sludge; cellulose; enzymes; fermentation; hemicellulose; hydrolysis; lignin; lignocellulose; microbial biomass; microorganisms; paper; pulp; sugars; toxic substances; value-added products
Abstract:
... Biovalorization of pulp and paper activated sludge to value-added products could be an effective alternative to traditional sludge management methods, which tend to pose serious environmental issues. Since pulp and paper activated sludge consists of microbial biomass, cellulose, hemicellulose and lignin and thus, could be subjected to different hydrolysis methods to solubilize sludge solids and re ...
DOI:
10.1016/j.envres.2019.109094

44. Role of polyurethane-modified layered double hydroxides on SCFAs extraction from waste activated sludge fermentation liquid for elevating denitrification: Kinetics and mechanism

Author:
Mengxuan Deng; Aijuan Zhou; Chen Cheng; Sufang Wang; Yanqing Duan; Xiuping Yue
Source:
Environmental research 2020 v.187 pp. 109696
ISSN:
0013-9351
Subject:
Gibbs free energy; absorption; activated sludge; adsorbents; adsorption; calcium; carbon; cost effectiveness; denitrification; egg shell; endothermy; fermentation; liquids; polyurethanes; research; sorption isotherms
Abstract:
... Extraction of short-chain fatty acids (SCFAs) from fermentation liquid of waste activated sludge (WAS) is the key bottleneck hindering its application as electron donor in denitrification. This study explores the feasibility of polyether-type polyurethane (PU)-modified layered double hydroxides (LDHs, prepared using eggshell waste as calcium source) in SCFAs adsorbing from WAS fermentation liquid ...
DOI:
10.1016/j.envres.2020.109696

45. Simultaneous recovery of vivianite and produce short-chain fatty acids from waste activated sludge using potassium ferrate as pre-oxidation treatment

Author:
Qinxue Wen; Baozhen Liu; Zhiqiang Chen
Source:
Environmental research 2022 v.208 pp. 112661
ISSN:
0013-9351
Subject:
Geobacter; acidification; activated sludge; carbon; fermentation; neutralization; phosphates; potassium; research; wastewater treatment
Abstract:
... Recovery resources from waste active sludge (WAS) is an effective way to alleviate the predicament of WAS disposal, and it is also conducive to the carbon neutralization of wastewater treatment systems. This study discussed the strategy of WAS anaerobic fermentation after pre-oxidation with potassium ferrate (K₂FeO₄, PF), which can simultaneously recover vivianite and enhance SCFAs production. The ...
DOI:
10.1016/j.envres.2021.112661

46. Stability, biological treatment and UV photolysis of 18 bisphenols under laboratory conditions

Author:
Ana Kovačič; Marjeta Česen; Maria Laimou-Geraniou; Dimitra Lambropoulou; Tina Kosjek; David Heath; Ester Heath
Source:
Environmental research 2019 pp. -
ISSN:
0013-9351
Subject:
activated sludge; adsorption; biological treatment; biomass; bioreactors; bisphenol A; hydrolysis; isomers; laboratory experimentation; methanol; photolysis; storage time; wastewater
Abstract:
... The limited knowledge on the stability, removal, and the fate of bisphenol A analogues in the aqueous environment led us to assesses the removal by hydrolysis, adsorption, biological treatment and UV photolysis of eighteen common bisphenol compounds (BPs). Hydrolysis of BPs does not occur. The main factor affecting their stability in wastewater samples is storage time, and safe storage conditions ...
DOI:
10.1016/j.envres.2019.108738

47. Study of the variations in apparent electrical resistivity of activated sludge during the electro-dewatering process

Author:
Li Sha; Xiaoyan Yu; Zhangxiang Wu; Xingxin Liu; Haozhe Wang; Qingqing Jiang; Shuting Zhang
Source:
Environmental research 2021 v.198 pp. 110453
ISSN:
0013-9351
Subject:
activated sludge; electrical resistance; energy; microstructure; pH; redox potential; research; temperature; water content; water distribution; zeta potential
Abstract:
... The high energy consumption of high apparent electrical resistivity (AER) in sludge during the later stages of the electro-dewatering (EDW) process is a difficult problem; however, analysis of sludge AER may contribute to a reduction in energy consumption. In this study, the variations in the AER of activated sludge and potential mechanisms related to sludge properties were systematically examined ...
DOI:
10.1016/j.envres.2020.110453

48. Succession of diversity, functions, and interactions of the fungal community in activated sludge under aromatic hydrocarbon stress

Author:
Shuzhen Li; Ye Deng; Shengyang Lian; Chunxiao Dai; Qiao Ma; Yuanyuan Qu
Source:
Environmental research 2022 v.204 pp. 112143
ISSN:
0013-9351
Subject:
Candida; Exophiala; activated sludge; benzene; biodegradation; fungal communities; fungi; naphthalene; peroxidase; research; topology; trophic relationships
Abstract:
... Although fungi are regarded as the important degraders of aromatic hydrocarbons (AHs) in various environments, the dynamic succession and interaction of their community under aromatic hydrocarbon stress has been rarely reported. In this study, we systematically investigated the responses of the fungal community and the associations among fungal species when facing the continuous stress of two typi ...
DOI:
10.1016/j.envres.2021.112143

49. Temperature impacts fate of antibiotic resistance genes during vermicomposting of domestic excess activated sludge

Author:
Guangyu Cui; Xiaoyong Fu; Sartaj Ahmad Bhat; Weiping Tian; Xuyang Lei; Yongfen Wei; Fusheng Li
Source:
Environmental research 2022 v.207 pp. 112654
ISSN:
0013-9351
Subject:
Aeromonas; Chitinophagaceae; activated sludge; antibiotic resistance; bacterial communities; kinetics; research; temperature; vermicomposting
Abstract:
... Effect of temperature on antibiotic resistance genes (ARGs) during vermicomposting of domestic excess sludge remains poorly understood. Vermicomposting experiment with excess sludge was conducted at three different temperatures (15 °C, 20 °C, and 25 °C) to investigate the fate of ARGs, bacterial community and their relationship in the process. The vermicomposting at 25 °C did not significantly att ...
DOI:
10.1016/j.envres.2021.112654

50. Towards efficient elimination of polycyclic aromatic hydrocarbons (PAHs) from waste activated sludge by ozonation

Author:
Wenhao Li; Nanwen Zhu; Yanwen Shen; Haiping Yuan
Source:
Environmental research 2021 v.195 pp. 110783
ISSN:
0013-9351
Subject:
activated sludge; byproducts; models; oxidation; ozonation; ozone; pH; research; risk; sewage sludge; sewage treatment; sorption
Abstract:
... Sewage sludge is one of the sinks for PAHs accumulation and concerns are growing regarding the environmental risk of the discharge of PAHs in waste activated sludge (WAS) as a major byproduct of sewage treatment. Here, we evaluated the effectiveness of ozone treatment to eliminate the 16 priority PAHs in WAS. The PAHs removal efficiency increased with ozone dosage and was strongly pH dependent. Ev ...
DOI:
10.1016/j.envres.2021.110783