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You searched for: Subject Acidobacteria Remove constraint Subject: Acidobacteria Subject term activated sludge Remove constraint Subject term: activated sludge
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1. Acute effects of hexavalent chromium on the performance and microbial community of activated sludge in aerobiotic reactors

Author:
Quan Zheng; Situ Na; Xinhui Li; Nankun Li; Reti Hai; Xiaohui Wang
Source:
Environmental technology 2019 v.40 no.14 pp. 1871-1880
ISSN:
1479-487X
Subject:
Acidobacteria; Coxiella; Planctomycetes; Rhodanobacter; activated sludge; acute effects; ammonium nitrogen; bacteria; bacterial communities; chemical oxygen demand; chromium; community structure; nitrification; oxygen; toxicity
Abstract:
... This study investigated the acute effects of hexavalent chromium (Cr(VI)) shock load at 2.5, 6 and 25 mg/L on the performance and bacterial community structures in aerobiotic activated sludge reactors. The results showed that eight-day Cr(VI) toxicity made the removal rates of COD and NH₃–N to obviously decrease in all reactors. Furthermore, the higher the Cr(VI) concentration was, the more severe ...
DOI:
10.1080/09593330.2018.1432695

2. 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

3. Application of a novel molecular technique to characterise the effect of settling on microbial community composition of activated sludge

Author:
Luong N. Nguyen; Audrey S. Commault; Md Abu Hasan Johir; Heriberto Bustamante; Robert Aurisch; Rebecca Lowrie; Long D. Nghiem
Source:
Journal of environmental management 2019 v.251 pp. 109594
ISSN:
0301-4797
Subject:
Acidobacteria; Actinobacteria; Bacteroidetes; Chloroflexi; Firmicutes; Nitrospirae; Proteobacteria; Spirochaetae; Verrucomicrobia; activated sludge; ammonium; community structure; foaming; gravity; microbial communities; microorganisms; municipal wastewater; nitrification; wastewater treatment
Abstract:
... Activated sludge (AS) and return activated sludge (RAS) microbial communities from three full-scale municipal wastewater treatment plants (denoted plant A, B and C) were compared to assess the impact of sludge settling (i.e. gravity thickening in the clarifier) and profile microorganisms responsible for nutrient removal and reactor foaming. The results show that all three plants were dominated wit ...
DOI:
10.1016/j.jenvman.2019.109594

4. Biodegradation of azo dye-containing wastewater by activated sludge: a critical review

Author:
Grazielly Maria Didier de Vasconcelos; Jéssica Mulinari; Selene Maria de Arruda Guelli Ulson de Souza; Antônio Augusto Ulson de Souza; Débora de Oliveira; Cristiano José de Andrade
Source:
World journal of microbiology & biotechnology 2021 v.37 no.6 pp. 101
ISSN:
0959-3993
Subject:
Acidobacteria; Clostridium; Pseudomonas; Streptococcus; activated sludge; biodegradation; biotechnology; desorption; dyes; human health; microbiology; microbiome; textile industry; toxicity; wastewater
Abstract:
... The effluent from the textile industry is a complex mixture of recalcitrant molecules that can harm the environment and human health. Biological treatments are usually applied for this wastewater, particularly activated sludge, due to its high efficiency, and low implementation and operation costs. However, the activated sludge microbiome is rarely well-known. In general, activated sludges are com ...
DOI:
10.1007/s11274-021-03067-6

5. Biodegradation of pharmaceuticals and personal care products in the sequential combination of activated sludge treatment and soil aquifer treatment

Author:
Kai He; Yasuhiro Asada; Shinya Echigo; Sadahiko Itoh
Source:
Environmental technology 2020 v.41 no.3 pp. 378-388
ISSN:
1479-487X
Subject:
Acidobacteria; Actinobacteria; Proteobacteria; activated sludge; amines; amino acids; antibiotics; aquifers; biodegradability; biodegradation; clofibric acid; fluoroquinolones; gemfibrozil; ketoprofen; macrolides; metabolism; microbial communities; personal care products; pollutants; pollution control; polymers; soil; sorption; water reuse
Abstract:
... Soil aquifer treatment (SAT), applied after activated sludge treatment (AST), has been widely used for wastewater reclamation. AST and SAT show potential for removing micropollutants, including pharmaceuticals and personal care products (PPCPs). However, the role of sequential combination of AST and SAT on the biodegradation of PPCPs was not clear in previous studies. In this study, the removal ch ...
DOI:
10.1080/09593330.2018.1499810

6. Biosynthesis of poly(hydroxybutyrate-hydroxyvalerate) from the acclimated activated sludge and microbial characterization in this process

Author:
Yuanpeng Wang; Jiyuan Cai; Jianghuang Lan; Zhenggui Liu; Ning He; Liang Shen; Qingbiao Li
Source:
Bioresource technology 2013 v.148 pp. 61-69
ISSN:
0960-8524
Subject:
Acidobacteria; Burkholderiales; acclimation; activated sludge; biosynthesis; carbon
Abstract:
... This study investigated the effects of substrate composition (acetate and propionate) on synthesis of various mix of poly(hydroxybutyrate-hydroxyvalerate) (P(HB/HV)) from activated sludge, which was acclimated using a single carbon (acetate) and mixed carbons (acetate and propionate). Results of batch P(HB/HV) production tests indicated that the yield and synthesis rate of P(HB/HV) decreased as th ...
DOI:
10.1016/j.biortech.2013.08.102
PubMed:
24035892

7. 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

8. Characterization of a microbial community capable of nitrification at cold temperature

Author:
Ducey, Thomas F.; Vanotti, Matias B.; Shriner, Anthony D.; Szogi, Ariel A.; Ellison, Aprel Q.
Source:
Bioresource technology 2010 v.101 no.2 pp. 491-500
ISSN:
0960-8524
Subject:
activated sludge; ammonia; Acidobacteria; nitrification; species diversity; Verrucomicrobiaceae; oxidation; Actinobacteria; Nitrosomonas
Abstract:
... While the oxidation of ammonia is an integral component of advanced aerobic livestock wastewater treatment, the rate of nitrification by ammonia-oxidizing bacteria is drastically reduced at colder temperatures. In this study we report an acclimated lagoon nitrifying sludge that is capable of high rates of nitrification at temperatures from 5°C (11.2mg N/g MLVSS/h) to 20°C (40.4mg N/g MLVSS/h). The ...
Handle:
10113/38086
DOI:
10.1016/j.biortech.2009.07.091
PubMed:
19734046

9. Characterization of microbial communities during start-up of integrated fixed-film activated sludge (IFAS) systems for the treatment of oil sands process-affected water (OSPW)

Author:
Chunkai Huang; Yijing Shi; Zhiya Sheng; Mohamed Gamal El-Din; Yang Liu
Source:
Biochemical engineering journal 2017 v.122 pp. 123-132
ISSN:
1369-703X
Subject:
Acidobacteria; Bacteroidetes; Nitrospirae; Proteobacteria; activated sludge; bacterial communities; biofilm; biomass; genes; microorganisms; oil sands; ozonation; ozone; remediation; ribosomal RNA; sequence analysis; wastewater treatment
Abstract:
... In this study, integrated fixed-film activated sludge (IFAS) microbial development and degradation efficiency were investigated for oil sands process-affected water (OSPW) remediation. IFAS microbial community was characterized using 454 high-throughput 16S rRNA gene pyrosequencing that revealed that the IFAS seed sludge (activated sludge [AS] from the Gold Bar Wastewater Treatment Plant [GBWTP]) ...
DOI:
10.1016/j.bej.2017.03.003

10. Community Composition and Function of Bacteria in Activated Sludge of Municipal Wastewater Treatment Plants

Author:
Ning Xie; Liping Zhong; Liao Ouyang; Wang Xu; Qinghuai Zeng; Keju Wang; Madiha Zaynab; Huirong Chen; Fangfang Xu; Shuangfei Li
Source:
Water 2021 v.13 no.6 pp. -
ISSN:
2073-4441
Subject:
Acidobacteria; Bacteroidetes; Firmicutes; Nitrospirae; Proteobacteria; activated sludge; bacterial communities; biodiversity; chemical oxygen demand; community structure; genes; humans; municipal wastewater; nitrates; nitrification; nitrites; oxidation; total nitrogen; wastewater treatment; water; China
Abstract:
... Municipal wastewater treatment plants (WWTPs) use functional microorganisms in activated sludge (AS) to reduce the environmental threat posed by wastewater. In this study, Illumina NovaSeq sequencing of 16S rRNA genes was performed to explore the microbial communities of AS at different stages of the two WWTP projects in Shenzhen, China. Results showed that Proteobacteria, Bacteroidetes, Acidobact ...
DOI:
10.3390/w13060852

11. Composition diversity and nutrition conditions for accumulation of polyhydroxyalkanoate (PHA) in a bacterial community from activated sludge

Author:
Changli Liu; Haibiao Wang; Wenhui Xing; Li Wei
Source:
Applied microbiology and biotechnology 2013 v.97 no.21 pp. 9377-9387
ISSN:
0175-7598
Subject:
Acidobacteria; Acinetobacter; Actinomycetales; Arcobacter; Bacillus (bacteria); activated sludge; alpha-Proteobacteria; bacteria; bacterial communities; beta-Proteobacteria; chemical oxygen demand; denaturing gradient gel electrophoresis; genes; nutrition; polyhydroxybutyrate; ribosomal RNA
Abstract:
... We investigated the effect of chemical oxygen demand (COD)/N ratio on polyhydroxybutyrate (PHB) accumulating ability in an anaerobic/aerobic cycle sequential batch reactor (SBR). Compared the COD/N ratio of 10, 20, 50, and 125, the COD/N of 125 was the most suitable nutritional proportion. When COD was 1,200 mg/L and COD/N/P was 1,200/9.6/30, activated sludge PHB synthesis reached a maximum of 64. ...
DOI:
10.1007/s00253-013-5165-6
PubMed:
23974368

12. Composition of bacterial communities in municipal wastewater treatment plant

Author:
Lei Zhang; Zhen Shen; Wangkai Fang; Guang Gao
Source:
Science of the total environment 2019 v.689 pp. 1181-1191
ISSN:
0048-9697
Subject:
Acidobacteria; Actinobacteria; Bacteroidetes; Chloroflexi; Firmicutes; Nitrosomonas; activated sludge; amino acids; bacterial communities; biogenesis; carbohydrates; cell walls; chemical oxygen demand; community structure; energy; environmental factors; gene dosage; genetic variation; high-throughput nucleotide sequencing; metabolism; municipal wastewater; nitrifying bacteria; pH; phylotype; ribosomal RNA; signal transduction; wastewater treatment; China
Abstract:
... Efforts to understand the environmental and biological factors that influence the dynamics of microbial communities have received substantial attention in microbial ecology. In this study, Illumina MiSeq high-throughput sequencing technology was used to examine the microbial community structure of activated sludge in municipal wastewater treatment systems (Chuzhou city, China). Overall, Proteobact ...
DOI:
10.1016/j.scitotenv.2019.06.432

13. Detecting the Nonviable and Heat-Tolerant Bacteria in Activated Sludge by Minimizing DNA from Dead Cells

Author:
Feng Guo; Tong Zhang
Source:
Microbial ecology 2014 v.67 no.4 pp. 829-836
ISSN:
0095-3628
Subject:
Acidobacteria; Actinobacteria; Anoxybacillus; activated sludge; bacteria; dyes; heat tolerance; heat treatment; humans; nests; polymerase chain reaction; propidium; ribosomal DNA; sewage treatment; survival rate; viability
Abstract:
... Propidium monoazide (PMA) has been used to determine viable microorganisms for clinical and environmental samples since selected naked DNA which was covalently cross-linked by this dye could not be PCR-amplified. In this study, we applied PMA to the activated sludge samples composed of complex bacterial populations to investigate the viability of human fecal bacteria and to determine the heat-tole ...
DOI:
10.1007/s00248-014-0389-2
PubMed:
24535161

14. Development of an electroactive aerobic biocathode for microbial fuel cell applications

Author:
Priyadharshini Mani; Fidal V T; Kyle Bowman; Chandra T S; Taj Keshavarz; Godfrey Kyazze
Source:
Environmental microbiology reports 2020 v.12 no.5 pp. 607-612
ISSN:
1758-2229
Subject:
Acidobacteria; Actinobacteria; Bacteroidetes; Firmicutes; Proteobacteria; activated sludge; biocathodes; biofilm; carbon dioxide; catalysts; genes; microbial communities; microbial fuel cells; organic carbon; platinum; textile mill effluents
Abstract:
... Microbial biocathodes are gaining interest due to their low cost, environmental friendliness and sustainable nature. In this study, a microbial consortium was enriched from activated sludge obtained from a common textile effluent treatment plant in the absence of organic carbon source to produce an electroactive biofilm. Chronoamperometry method of enrichment was carried out for over 70 days to se ...
DOI:
10.1111/1758-2229.12871

15. Dynamics of the composition of a microbial consortium during start-up of a single-stage constant flow laboratory nitritation/anammox setup

Author:
A. V. Mardanov; A. V. Beletskii; A. Yu. Kallistova; R. Yu. Kotlyarov; Yu. A. Nikolaev; M. V. Kevbrina; A. M. Agarev; N. V. Ravin; N. V. Pimenov
Source:
Microbiology 2016 v.85 no.6 pp. 681-692
ISSN:
0026-2617
Subject:
Acidobacteria; Actinobacteria; Bacteroidetes; Chloroflexi; Firmicutes; Ignavibacteria; Nitrosomonadales; Synergistetes; Thermotogae; activated sludge; aeration; ammonium; anaerobic ammonium oxidation; bacterial communities; filtrates; nitrifying bacteria; nitrites; nitrogen; nitrogen-fixing bacteria; oxidation; ribosomal RNA; sequence analysis; wastewater treatment
Abstract:
... Dynamics of the composition of the microbial community was studied during start-up of a single-stage completely mixed constant flow laboratory setup for ammonium removal by the nitritation/anammox process from the filtrate of digested sludge of the Kuryanovo wastewater treatment plant (KWTP), Moscow. To decrease the period of the start-up, the setup was initially inoculated with two types of activ ...
DOI:
10.1134/S002626171606014X

16. Effect of copper on the performance and bacterial communities of activated sludge using Illumina MiSeq platforms

Author:
Fu-Lin Sun; Lei-Lei Fan; Guang-Jian Xie
Source:
Chemosphere 2016 v.156 pp. 212-219
ISSN:
0045-6535
Subject:
Acidobacteria; Bacteroidetes; Chlorobi; Nitrospirae; Proteobacteria; activated sludge; ammonium nitrogen; bacterial communities; chemical oxygen demand; cluster analysis; copper; exposure duration; sewage treatment; toxicity; wastewater treatment
Abstract:
... The anaerobic-anoxic-aerobic (A2O) process is a highly efficient sewage treatment method, which uses complex bacterial communities. However, the effect of copper on this process and the bacterial communities involved remains unknown. In this study, a systematic investigation of the effect of persistent exposure of copper in the A2O wastewater treatment system was performed. An A2O device was desig ...
DOI:
10.1016/j.chemosphere.2016.04.117

17. Effects of biomass pyrolysis derived wood vinegar on microbial activity and communities of activated sludge

Author:
Fang Zhang; Jingai Shao; Haiping Yang; Dabin Guo; Zhihua Chen; Shihong Zhang; Hanping Chen
Source:
Bioresource technology 2019 v.279 pp. 252-261
ISSN:
0960-8524
Subject:
Acidobacteria; Bacteroidetes; Nitrospirae; Proteobacteria; activated sludge; biomass; denitrifying bacteria; microbial activity; nitrifying bacteria; nitrogen-fixing bacteria; pyrolysis; sewage treatment; species richness; vinegars; wood
Abstract:
... The effects of wood vinegar (WVG) on microbial activity and communities of activated sludge were investigated in a sequencing batch reactor (SBR) process. Results showed that the optimal WVG concentration was 4 μL/L when the pollutants removal efficiency and microbial activity were promoted by a WVG dilution factor of 1000. WVG could reduce the increase in microbial species richness, which led to ...
DOI:
10.1016/j.biortech.2019.01.133

18. Effects of different carbon sources on the removal of ciprofloxacin and pollutants by activated sludge: Mechanism and biodegradation

Author:
Yixiang Cai; Zhiyong Yan; Yingjuan Ou; Boshang Peng; Lihua Zhang; Jihai Shao; Yiqing Lin; Jiachao Zhang
Source:
Journal of environmental sciences (China) 2022 v.111 pp. 240-248
ISSN:
1001-0742
Subject:
Acidobacteria; Microbacterium; Rhodanobacter; activated sludge; biodegradation; carbon; ciprofloxacin; denitrification; glucose; nitrates; nitrification; nitrites; quantitative polymerase chain reaction; sodium acetate; wastewater; China
Abstract:
... This research investigated the effects of ciprofloxacin (CIP) (0.5, 5, and 20 mg/L) on SBR systems under different carbon source conditions. Microbial community abundance and structure were determined by quantitative PCR and high-throughput sequencing, respectively. The biodegradation production of CIP and possible degradation mechanism were also studied. Results showed that CIP had adverse effect ...
DOI:
10.1016/j.jes.2021.03.037

19. Effects of microbial activity on perfluorinated carboxylic acids (PFCAs) generation during aerobic biotransformation of fluorotelomer alcohols in activated sludge

Author:
Xiaolong Yu; Fumitake Nishimura; Taira Hidaka
Source:
Science of the total environment 2018 v.610-611 pp. 776-785
ISSN:
0048-9697
Subject:
Acidobacteria; Bacteroidetes; Chlorobi; Chloroflexi; Crenarchaeota; Planctomycetes; Proteobacteria; activated sludge; alcohols; ammonia; ammonia monooxygenase; autotrophs; biodegradation; biotransformation; carbon; carboxylic acids; community structure; glucose; heterotrophs; hydroxyl radicals; metabolism; microbial activity; microbial communities; microorganisms; oxidation; toxic substances; wastewater treatment
Abstract:
... Biotransformation of fluorotelomer alcohols (FTOHs) in wastewater treatment plants (WWTPs) can release toxic intermediates and perfluorinated carboxylic acids (PFCAs) to the aqueous environment. However, little information is known about the role of relevant microbial activity (i.e., autotrophs and/or heterotrophs) in biotransformation of FTOHs. Additionally, the dynamics of microbial community in ...
DOI:
10.1016/j.scitotenv.2017.08.075

20. Evaluation of performance and microbial community successional patterns in an integrated OCO reactor under ZnO nanoparticle stress

Author:
Zhenghui Liu; Huifang Zhou; Jiefeng Liu; Mei Huang; Xudong Yin; Zhisen Liu; Yufeng Mao; Wenyu Xie; Dehao Li
Source:
RSC advances 2018 v.8 no.47 pp. 26928-26933
ISSN:
2046-2069
Subject:
Acidobacteria; Acinetobacter; Actinobacteria; Bacteroidetes; Firmicutes; Pseudomonas; Stenotrophomonas; activated sludge; chronic exposure; microbial communities; nanoparticles; nitrogen; phosphorus; zinc oxide
Abstract:
... An integrated OCO reactor was used to investigate the performance and microbial community successional changes under long-term exposure to relatively low levels of ZnO nanoparticles (NPs). Relatively higher concentrations of ZnO NPs (1.5 mg L⁻¹) could adversely affect the nitrogen and phosphorus removal in the reactor. The diversity and richness of the microbial communities chronically declined wi ...
DOI:
10.1039/c8ra05057k

21. Gut digestion of earthworms significantly attenuates cell-free and -associated antibiotic resistance genes in excess activated sludge by affecting bacterial profiles

Author:
Guangyu Cui; Sartaj Ahmad Bhat; Wenjiao Li; Yongfen Wei; Huang Kui; Xiaoyong Fu; Hongjie Gui; Chaohai Wei; Fusheng Li
Source:
Science of the total environment 2019 v.691 pp. 644-653
ISSN:
0048-9697
Subject:
Acidobacteria; Chlorobi; Deinococcus-Thermus; Euryarchaeota; Fibrobacteres; Firmicutes; Proteobacteria; activated sludge; antibiotic resistance genes; bacterial communities; digestion; digestive system; earthworms; high-throughput nucleotide sequencing; hosts; polymers; species diversity; vermicomposting; worm casts
Abstract:
... Vermicomposting can significantly attenuate antibiotic resistance genes (ARGs) in the excess activated sludge (EAS). However, the effect of earthworms, especially the effect of gut digestion as a critical step in the vermicomposting process, remains unclarified. The purpose of this study was to investigate the response of ARGs (cell-free and -associated) in EAS to gut digestion of earthworms and t ...
DOI:
10.1016/j.scitotenv.2019.07.177

22. Identification of the microbial community composition and structure of coal-mine wastewater treatment plants

Author:
Qiao Ma; Yuan-Yuan Qu; Xu-Wang Zhang; Wen-Li Shen; Zi-Yan Liu; Jing-Wei Wang; Zhao-Jing Zhang; Ji-Ti Zhou
Source:
Microbiological research 2015 v.175 pp. 1-5
ISSN:
0944-5013
Subject:
Acidobacteria; Actinobacteria; Azoarcus; Bacteroidetes; Comamonas; Firmicutes; Nitrosomonas; Planctomycetes; Pseudomonas; Thauera; Thiobacillus; activated sludge; biodegradation; community structure; denitrification; high-throughput nucleotide sequencing; industry; microbial communities; microorganisms; municipal wastewater; pollutants; wastewater treatment
Abstract:
... The wastewater from coal-mine industry varies greatly and is resistant to biodegradation for containing large quantities of inorganic and organic pollutants. Microorganisms in activated sludge are responsible for the pollutants’ removal, whereas the microbial community composition and structure are far from understood. In the present study, the sludges from five coal-mine wastewater treatment plan ...
DOI:
10.1016/j.micres.2014.12.013

23. Impact of Long-Term Perfluorooctanoic Acid (PFOA) Exposure on Activated Sludge Process

Author:
Xiaolong Yu; Fumitake Nishimura; Taira Hidaka
Source:
Water, air, and soil pollution 2018 v.229 no.4 pp. 134
ISSN:
0049-6979
Subject:
Acidobacteria; Bacteroidetes; Proteobacteria; activated sludge; chronic exposure; denitrification; dissolved organic carbon; microbial communities; microbial growth; nitrification; nitrogen; perfluorooctanoic acid; toxic substances; wastewater; wastewater treatment
Abstract:
... Poly- and perfluorinated alkyl substances (PFASs) are groups of persistent toxic substances that have been commonly detected in wastewater treatment plants (WWTPs). In some cases, the activated sludge (AS) in WWTPs will encounter special wastewaters containing PFASs up to tens of milligram per liter (mg L⁻¹). However, under this condition, the potential impacts of PFASs on AS process remain unclea ...
DOI:
10.1007/s11270-018-3760-y

24. New insights into the evolution of bacterial community during the domestication of phthalate-degrading consortium

Author:
Xue-Jing Huang; Huan Du; Xiao-Long Deng; Yong-Hong Chen; Lei Xiang; Yan-Wen Li; Hui Li; Ce-Hui Mo; Quan-Ying Cai; Hai-Ming Zhao
Source:
Journal of cleaner production 2021 v.303 pp. 127064
ISSN:
0959-6526
Subject:
Acidobacteria; Actinobacteria; Bacteroidetes; Proteobacteria; activated sludge; bacterial communities; bioremediation; domestication; enrichment culture; evolution; metabolism; mutualism; occupations; phthalates; polymers; polysaccharides; toxicity
Abstract:
... The selective enrichment culture technique is widely used in domestication of pollutant-degrading microorganisms. However, very little information is available regarding the evolution and interaction of microbial communities during the domestication. For the first time, successional variation of bacterial community and metabolism were investigated during the enrichment culture of a phthalate-degra ...
DOI:
10.1016/j.jclepro.2021.127064

25. Optimization of ozonation combined with integrated fixed-film activated sludge (IFAS) in the treatment of oil sands process-affected water (OSPW)

Author:
Chunkai Huang; Yijing Shi; Mohamed Gamal El-Din; Yang Liu
Source:
International biodeterioration & biodegradation 2016 v.112 pp. 31-41
ISSN:
0964-8305
Subject:
Acidobacteria; Bacteroidetes; Nitrospirae; Proteobacteria; activated sludge; biofilm; biomass; chemical oxygen demand; community structure; denitrifying microorganisms; genes; microbial communities; nitrogen; nitrogen content; oil sands; ozonation; quantitative polymerase chain reaction
Abstract:
... Effects of hydraulic retention time (HRT) and the chemical oxygen demand/nitrogen (COD/N) ratio on the microbial community composition of integrated fixed-film activated sludge (IFAS) and its ability to treat raw and ozonated oil sands process-affected water (OSPW) were evaluated. After 11 months of HRT and ammonium optimization, 54.56% of the COD and 30.20% of the acid extractable fraction (AEF) ...
DOI:
10.1016/j.ibiod.2016.04.037

26. Regional discrepancy of microbial community structure in activated sludge system from Chinese WWTPs based on high-throughput 16S rDNA sequencing

Author:
Jinsen Zhang; Guo-hua Liu; Qi Wei; Shuai Liu; Yuting Shao; Jingbing Zhang; Lu Qi; Hongchen Wang
Source:
Science of the total environment 2022 v.818 pp. 151751
ISSN:
0048-9697
Subject:
Acidobacteria; Chloroflexi; activated sludge; bacterial communities; biomarkers; community structure; environmental factors; factor analysis; ribosomal DNA; wastewater treatment; China
Abstract:
... Overall understanding of microbial community structure in activated sludge (AS) system at regional level is of great significance for operation regulation of wastewater treatment plants (WWTPs). In this study, 110 AS samples from 21 cities in different Chinese regions were analyzed based on high-throughput 16S ribosomal DNA (rDNA) sequencing to explore effects of different regions on microbial com ...
DOI:
10.1016/j.scitotenv.2021.151751

27. Removal of tetramethylammonium hydroxide (TMAH) from thin-film transistor liquid crystal display (TFT-LCD) industry wastewater by hydrolysis acidification-aerobic and anaerobic processes

Author:
Juan Lv; Yan Wang; Mengya Fu; Changyuan Ou; Fan Xiao
Source:
Journal of cleaner production 2021 v.279 pp. 123502
ISSN:
0959-6526
Subject:
Acidobacteria; Bacteroidetes; Proteobacteria; acidification; activated sludge; ammonium; anaerobic digesters; anaerobic treatment; batch systems; biodegradation; carbon dioxide; community structure; dimethylamine; films (materials); hydrolysis; industrial wastewater; industry; liquid crystal display; methane; microbial communities; mineralization; monitoring; neurons; nitrates; organic nitrogen; ribosomal RNA; sequence analysis; tetramethylammonium compounds; total organic carbon; toxic substances; transistors; trimethylamine; wastewater treatment
Abstract:
... Tetramethylammonium Hydroxide (TMAH) is widely used as a developer in the thin-film transistor liquid crystal display (TFT-LCD) industry, which is a corrosive alkaline and neuronal toxic compound. In this study, the performances of combined hydrolysis acidification-aerobic and anaerobic batch reactors for synthetic TMAH wastewater treatment were evaluated. It also investigated the real TMAH wastew ...
DOI:
10.1016/j.jclepro.2020.123502

28. Responses of anaerobic digestion of waste activated sludge to long-term stress of benzalkonium chlorides: Insights to extracellular polymeric substances and microbial communities

Author:
Zhang-Wei He; Wen-Zong Liu; Cong-Cong Tang; Bin Liang; Ai-Juan Zhou; Fan Chen; Yong-Xiang Ren; Ai-Jie Wang
Source:
Science of the total environment 2021 v.796 pp. 148957
ISSN:
0048-9697
Subject:
Acidobacteria; Archaea; Bacteroidetes; Chloroflexi; Firmicutes; Synergistetes; activated sludge; adverse effects; anaerobes; anaerobic digestion; bacterial communities; environment; hydrolysis; methane; methane production; methanogens; polymers; quaternary ammonium compounds; solubilization
Abstract:
... Quaternary ammonium compounds have gained widespread attention due to their extensive enrichment in waste activated sludge (WAS) and potentially adverse effect to anaerobes. This study selected benzalkonium chlorides (BACs) as model to reveal the responses of anaerobic digestion of WAS to long-term stress of BACs. Results showed that the solubilization enhancement of WAS contributed by BACs was th ...
DOI:
10.1016/j.scitotenv.2021.148957

29. The effect of anaerobic–aerobic and feast–famine cultivation pattern on bacterial diversity during poly-β-hydroxybutyrate production from domestic sewage sludge

Author:
Changli Liu; Di Liu; Yingjie Qi; Ying Zhang; Xi Liu; Min Zhao
Source:
Environmental science and pollution research international 2016 v.23 no.13 pp. 12966-12975
ISSN:
0944-1344
Subject:
Acidobacteria; Actinobacteria; Cyanobacteria; Proteobacteria; activated sludge; bacterial communities; chloroplasts; fermentation; genes; oxygen; ribosomal RNA; sequence analysis; sewage sludge
Abstract:
... The main objective of this work was to investigate the influence of different oxygen supply patterns on poly-β-hydroxybutyrate (PHB) yield and bacterial community diversity. The anaerobic–aerobic (A/O) sequencing batch reactors (SBR1) and feast–famine (F/F) SBR2 were used to cultivate activated sludge to produce PHB. The mixed microbial communities were collected and analyzed after 3 months cultiv ...
DOI:
10.1007/s11356-016-6345-6

30. Use of magnetic powder to effectively improve the performance of sequencing batch reactors (SBRs) in municipal wastewater treatment

Author:
Yi Liu; Jixiang Li; Wenshan Guo; Huu Hao Ngo; Jiajun Hu; Min-tian Gao
Source:
Bioresource technology 2018 v.248 pp. 135-139
ISSN:
0960-8524
Subject:
Acidobacteria; Bacteroidetes; Chlorobi; Chloroflexi; Firmicutes; Planctomycetes; activated sludge; ammonium nitrogen; chemical oxygen demand; high-throughput nucleotide sequencing; microbial communities; municipal wastewater; wastewater treatment
Abstract:
... This study aims to investigate the effect of adding magnetic powder in the sequencing batch reactor (SBR) on the reactor performance and microbial community. Results indicated that, the magnetic activated sludge sequencing batch reactor (MAS-SBR) had 7.76% and 4.76% higher ammonia nitrogen (NH4+-N) and chemical oxygen demand (COD) removal efficiencies than that of the conventional SBR (C-SBR). The ...
DOI:
10.1016/j.biortech.2017.06.069