DOI: 10.1016/j.watres.2018.10.070
Scopus记录号: 2-s2.0-85056236754
论文题名: Response and recovery of microbial communities subjected to oxidative and biological treatments of 1,4-dioxane and co-contaminants
作者: Miao Y. ; Johnson N.W. ; Gedalanga P.B. ; Adamson D. ; Newell C. ; Mahendra S.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 74
结束页码: 85
语种: 英语
英文关键词: Bioremediation
; Coupled treatment
; K-r scheme
; Microbial ecology
; Microbial networks
Scopus关键词: Biodegradation
; Biodiversity
; Bioremediation
; Biotechnology
; Computer system recovery
; Microorganisms
; Mixtures
; Peroxides
; Volatile organic compounds
; Bioinformatics analysis
; Chlorinated volatile organic compounds
; Coupled treatments
; Microbial communities
; Microbial community dynamics
; Microbial ecology
; Microbial populations
; Multi-dimensional analysis
; Oxidation
; bacterial DNA
; dioxane
; hydrogen peroxide
; volatile organic compound
; biodegradation
; bioremediation
; chemical pollutant
; community dynamics
; community response
; concentration (composition)
; microbial community
; microbial ecology
; oxidation
; waste treatment
; Afipia
; Aquabacterium
; Article
; bacterial gene
; bacterial strain
; bacterial viability
; bacterium
; biodegradation
; bioinformatics
; bioremediation
; chlorination
; commensalism
; comparative study
; controlled study
; Cupriavidus
; DNA extraction
; Gloeobacter
; Janthinobacterium
; Massilla
; microbial community
; microbial diversity
; microbial population dynamics
; microcosm
; Mycobacterium
; nonhuman
; oxidation
; oxidative stress
; priority journal
; Proteobacteria
; Pseudolabrys
; Pseudomonas
; Pseudonocardia
; Pseudonocardia dioxanivorans
; Ralstonia
; Sphingobacteriales
; Sphingomonas
; stress
; Variovorax
; waste component removal
; Afipia
; Bacteria (microorganisms)
; Cupriavidus
; Pseudonocardia dioxanivorans
; Ralstonia
; Sphingomonas
英文摘要: Microbial community dynamics were characterized following combined oxidation and biodegradation treatment trains for mixtures of 1,4-dioxane and chlorinated volatile organic compounds (CVOCs) in laboratory microcosms. Bioremediation is generally inhibited by co-contaminate CVOCs; with only a few specific bacterial taxa reported to metabolize or cometabolize 1,4-dioxane being unaffected. Chemical oxidation by hydrogen peroxide (H2O2) as a non-selective treatment demonstrated 50–80% 1,4-dioxane removal regardless of the initial CVOC concentrations. Post-oxidation bioaugmentation with 1,4-dioxane metabolizer Pseudonocardia dioxanivorans CB1190 removed the remaining 1,4-dioxane. The intrinsic microbial population, biodiversity, richness, and biomarker gene abundances decreased immediately after the brief oxidation phase, but recovery of cultivable microbiomes and a more diverse community were observed during the subsequent 9-week biodegradation phase. Results generated from the Illumina Miseq sequencing and bioinformatics analyses established that generally oxidative stress tolerant genus Ralstonia was abundant after the oxidation step, and Cupriavidus, Pseudolabrys, Afipia, and Sphingomonas were identified as dominant genera after aerobic incubation. Multidimensional analysis elucidated the separation of microbial populations as a function of time under all conditions, suggesting that temporal succession is a determining factor that is independent of 1,4-dioxane and CVOCs mixtures. Network analysis highlighted the potential interspecies competition or commensalism, and dynamics of microbiomes during the biodegradation phase, in line with the shifts of predominant genera and various developing directions during different steps of the treatment train. Collectively, this study demonstrated that chemical oxidation followed by bioaugmentation is effective for treating 1,4-dioxane, even in the presence of high levels of CVOC mixtures and residual peroxide, a disinfectant, and enhanced our understanding of microbial ecological impacts of the treatment train. These results will be valuable for predicting treatment synergies that lead to cost savings and improved remedial outcomes in short-term active remediation as well as long-term changes to the environmental microbial communities. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122168
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Civil and Environmental Engineering, University of California, Los Angeles, CA 90095, United States; GSI Environmental Inc., Houston, TX 77098, United States; Department of Health Science, California State University, Fullerton, CA 92834, United States
Recommended Citation:
Miao Y.,Johnson N.W.,Gedalanga P.B.,et al. Response and recovery of microbial communities subjected to oxidative and biological treatments of 1,4-dioxane and co-contaminants[J]. Water Research,2019-01-01