Biodegradation of trichloroethylene in anaerobic hybrid reactor

Mitra, Shibam; Gupta, Sunil Kumar

doi:10.1002/ep.11705

Cited by 6 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Milia et al (Milia, Porcu et al, 2013) Mitra and Gupta (Mitra and Gupta, 2013) Zhu et al (Zhu, Lv et al, 2013) analyses the strains, identified as IP3-3(T) and SBP-1, were found to represent a novel species within the Dehalogenimonas genus. Both strains were able to reductively dehalogenate a number of chlorinated alkanes and alkenes when hydrogen gas was used as electron donor.…”

Section: Fenton/fentonmentioning

confidence: 99%

Hazardous Waste Treatment Technologies

Mahmudov¹,

Li²,

Huang³

2014

Water Environment Research

View full text Add to dashboard Cite

show abstract

Section: Fenton/fentonmentioning

confidence: 99%

Hazardous Waste Treatment Technologies

Mahmudov¹,

Li²,

Huang³

2014

Water Environment Research

View full text Add to dashboard Cite

show abstract

“…Therefore, TCE causes dangers to ecology safety and human health. Moreover, the treatment of TCE has been investigated in aerobic reactors (Shukla et al 2009(Shukla et al , 2010 and some kinds of anaerobic reactors such as anaerobic hybrid reactor (Mitra and Gupta 2013) and expanded granular sludge bed (EGSB) bioreactors (Siggins et al 2011a, b); however, research about TCE treatment in the UASB reactor was limited (Ozdemir et al 2007). In addition, until now, there are few studies on the variations of bacterial community under different operation conditions of TCE treatment in the anaerobic reactors.…”

Section: Introductionmentioning

confidence: 98%

Analysis of trichloroethylene removal and bacterial community function based on pH-adjusted in an upflow anaerobic sludge blanket reactor

Zhang

et al. 2015

Appl Microbiol Biotechnol

View full text Add to dashboard Cite

The study reported the upflow anaerobic sludge blanket (UASB) reactor performance in treating wastewater containing trichloroethylene (TCE) and characterized variations of bacteria composition and structure by changing the pH from 6.0 to 8.0. A slightly acidic environment (pH < 7.0) had a greater impact on the TCE removal. Illumina pyrosequencing was applied to investigate the bacterial community changes in response to pH shifts. The results demonstrated that pH greatly influenced the dominance and presence of specific populations. The potential TCE degradation pathway in the UASB reactor was proposed. Importantly, the genus Dehalobacter which was capable of reductively dechlorinating TCE was detected, and it was not found at pH of 6.0, which presumably is the reason why the removal efficiency of TCE was the lowest (80.73 %). Through Pearson correlation analyses, the relative abundance of Dehalobacter positively correlated with TCE removal efficiency (R = 0.912). However, the relative abundance of Lactococcus negatively correlated with TCE removal efficiency according to the results from Pearson correlation analyses and redundancy analysis (RDA).

show abstract

Effect of hydraulic retention time (HRT) on the biodegradation of trichloroethylene wastewater and anaerobic bacterial community in the UASB reactor

Zhang

Wang

et al. 2014

Appl Microbiol Biotechnol

View full text Add to dashboard Cite

This study utilizes the unique merits of an 8-L laboratory upflow anaerobic sludge blanket (UASB) reactor for treating synthetic wastewater containing trichloroethylene (TCE). The reactor was operated at different hydraulic retention times (HRT) of 25, 20, 15, 10, and 5 h. TCE removal efficiency decreased from 99 to 85 % when the HRT was lowered down from 25 to 5 h, as well as chemical oxygen demand (COD) removal efficiency (from 95 to 84.15 %). Using Illumina 16S rRNA gene MiSeq sequencing, we investigated the evolution of bacterial communities in the anaerobic sludge under five different conditions of HRT. In total, 106,387 effective sequences of the 16S rRNA gene were generated from 5 samples that widely represented the diversity of microbial community. Sequence analysis consisting of several novel taxonomic levels ranging from phyla to genera revealed the percentages of these bacterial groups in each sample under different HRTs. The differences found among the five samples indicated that HRT had effects on the structures of bacterial communities and the changes of bacterial communities associated with the effect of HRT on the performance of the reactor. Sequence analyses showed that Bacteroidetes and Firmicutes were the dominant phyla. It is notable that the class Dehalococcoidia was found in the samples at HRT of 5, 10, 20, and 25 h, respectively, in which there were some dechlorination strains. Moreover, a tremendous rise of TCE removal efficiency from HRT of 5 h to HRT of 10 h was found.

show abstract

Biodegradation of trichloroethylene in anaerobic hybrid reactor

Cited by 6 publications

References 30 publications

Hazardous Waste Treatment Technologies

Hazardous Waste Treatment Technologies

Analysis of trichloroethylene removal and bacterial community function based on pH-adjusted in an upflow anaerobic sludge blanket reactor

Effect of hydraulic retention time (HRT) on the biodegradation of trichloroethylene wastewater and anaerobic bacterial community in the UASB reactor

Contact Info

Product

Resources

About