GYIG OpenIR  > 环境地球化学国家重点实验室  > 期刊论文
A humic substance analogue AQDS stimulates Geobacter sp abundance and enhances pentachlorophenol transformation in a paddy soil
Manjia Chen; HuiTong; Chengshuai Liu; Dandan Chen; Fangba iLi; Jiangtao Qiao
2016
Source PublicationChemosphere
Volume160Issue:1Pages:141-148
Abstract

Soil humic substances can be used as redox mediators in accelerating the biotransformation of organic pollutants, and humus-respiring bacteria are widely distributed in soils. However, the impact of humic substances on the soil microbial community during the biotransformation of organic pollutants is expected to be crucial while remains to be unclear. In this study, the biostimulation of indigenous microbial communities and the consequent effects on anaerobic transformation of pentachlorophenol (PCP) by a model humic substance, anthraquinone-2,6-disulfonate (AQDS), were systematically investigated in a paddy soil. The addition of AQDS was observed to increase the production of HCl-extractable Fe(II) and enhance the PCP transformation rates consequently. The pseudo-first-order rate constants of the PCP transformation showed a positive exponential relationship with the AQDS dosage. The terminal restriction fragment length polymorphism (T-RFLP) results indicated the substantial effect of added AQDS on soil microbial community. The enhanced abundance of Geobacter sp. was disclosed to be most critical for accelerated PCP transformation when with AQDS, in which Geobacter sp. functioned for promoting the generation of active Fe(II) and consequently enhancing the PCP transformation rates. The transformation rates of PCP were exponentially correlated with the abundance of Geobacter sp. positively. The findings are expected to improve the understanding of diversity and ubiquity of microorganisms in humic substances-rich soils for accelerating the transformations of soil chlorinated pollutants.

Subject Area环境地球化学
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/352002/6522
Collection环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
Recommended Citation
GB/T 7714
Manjia Chen,HuiTong,Chengshuai Liu,et al. A humic substance analogue AQDS stimulates Geobacter sp abundance and enhances pentachlorophenol transformation in a paddy soil[J]. Chemosphere,2016,160(1):141-148.
APA Manjia Chen,HuiTong,Chengshuai Liu,Dandan Chen,Fangba iLi,&Jiangtao Qiao.(2016).A humic substance analogue AQDS stimulates Geobacter sp abundance and enhances pentachlorophenol transformation in a paddy soil.Chemosphere,160(1),141-148.
MLA Manjia Chen,et al."A humic substance analogue AQDS stimulates Geobacter sp abundance and enhances pentachlorophenol transformation in a paddy soil".Chemosphere 160.1(2016):141-148.
Files in This Item:
File Name/Size DocType Version Access License
A humic substance an(776KB) 开放获取LicenseView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Manjia Chen]'s Articles
[HuiTong]'s Articles
[Chengshuai Liu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Manjia Chen]'s Articles
[HuiTong]'s Articles
[Chengshuai Liu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Manjia Chen]'s Articles
[HuiTong]'s Articles
[Chengshuai Liu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: A humic substance analogue AQDS stimulates Geobacter sp. abundance and enhances pentachlorophenol transformation in a paddy soil.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.