中国科学院生态环境研究中心机构知识库
Advanced  
RCEES OpenIR  > 环境化学与生态毒理学国家重点实验室  > 期刊论文
题名: The fate of arsenic adsorbed on iron oxides in the presence of arsenite-oxidizing bacteria
作者: Zhang, Zhennan; Yin, Naiyi; Du, Huili; Cai, Xiaolin; Cui, Yanshan
刊名: CHEMOSPHERE
出版日期: 2016-05
卷号: 151, 期号:0, 页码:108-115
关键词: Arsenic ; Iron oxide ; Arsenite-oxidizing bacteria
DOI: 10.1016/j.chemosphere.2016.02.065
部门归属: 环境化学与生态毒理学国家重点实验室
英文摘要: Arsenic (As) is a redox-active metalloid whose toxicity and mobility in soil depend on its oxidation state. Arsenite [As(III)] can be oxidized by microbes and adsorbed by minerals in the soil. However, the combined effects of these abiotic and biotic processes are not well understood. In this study, the fate of arsenic in the presence of an isolated As(III)-oxidizing bacterium (Pseudomonas sp. HN-1, 10(9) colony forming units (CFUs).ml(-1)) and three iron oxides (goethite, hematite, and magnetite at 1.6 g L-1) was determined using batch experiments. The total As adsorption by iron oxides was lower with bacteria present and was higher with iron oxides alone. The total As adsorption decreased by 78.6%, 36.0% and 79.7% for goethite, hematite and magnetite, respectively, due to the presence of bacteria. As(III) adsorbed on iron oxides could also be oxidized by Pseudomonas sp. HN-1, but the oxidation rate (1.3 mu mol h(-1)) was much slower than the rate in the aqueous phase (96.2 mu mol h(-1)). Therefore, the results of other studies with minerals only might overestimate the adsorptive capacity of solids in natural systems; the presence of minerals might hinder As(III) oxidation by microbes. Under aerobic conditions, in the presence of iron oxides and As(III)-oxidizing bacteria, arsenic is adsorbed onto iron oxides within the adsorption capacity, and As(V) is the primary form in the solid and aqueous phases. (C) 2016 Elsevier Ltd. All rights reserved.
收录类别: SCI
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35959
Appears in Collections:环境化学与生态毒理学国家重点实验室_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
The fate of arsenic adsorbed on iron oxides in the presence of arsenite-oxidizing bacteria.pdf(1859KB)期刊论文作者接受稿开放获取View Download
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Zhang, Zhennan]'s Articles
[Yin, Naiyi]'s Articles
[Du, Huili]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Zhang, Zhennan]‘s Articles
[Yin, Naiyi]‘s Articles
[Du, Huili]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: The fate of arsenic adsorbed on iron oxides in the presence of arsenite-oxidizing bacteria.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

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

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院生态环境研究中心 - Feedback
Powered by CSpace