Effects of dissolved low molecular weight organic acids on oxidation of ferrous iron by Acidithiobacillus ferrooxidans

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	Effects of dissolved low molecular weight organic acids on oxidation of ferrous iron by Acidithiobacillus ferrooxidans
	Ren, WX ; Li, PJ ; Zheng, L ; Fan, SX ; Verhozina, VA
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2009
卷号	162 期号:1 页码:17-22
关键词	Acidithiobacillus ferrooxidans Contaminated soil Ferrous iron oxidation Heavy metal Low molecular weight organic acid
ISSN号	0304-3894
通讯作者	Li, PJ, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China
中文摘要	A few researchers have reported on work concerning bioleaching of heavy-metal-contaminated soil using Acidithiobacillus ferrooxidans, since this acidophile is sensitive to dissolved low molecular weight (LMW) organic acids. Iron oxidation by A. ferrooxidans R2 as well as growth on ferrous iron was inhibited by a variety of dissolved LMW organic acids. Growth experiments with ferrous iron as an oxidant showed that the inhibition capability sequence was formic acid > acetic acid > propionic acid > oxalic acid > malic acid > citric acid. The concentrations that R2 might tolerate were formic acid 0.1 mmol L-1 (2 mmol kg(-1) soil), acetic and propionic acids 0.4 mmol L-1 (8 mmol kg(-1) soil), oxalic acid 2.0 mmol L-1 (40 mmol kg(-1) soil), malic acid 20 mmol L-1 (400 mmol kg(-1) soil), citric acid 40 mmol L-1 (800 mmol kg(-1) soil), respectively. Although R2 was sensitive to organic acids, the concentrations of LMW organic acids in the contaminated soils were rather lower than the tolerable levels. Hence, it is feasible that R2 might be used for bioleaching of soils contaminated with metals or metals coupled with organic compounds because of the higher concentrations of LMW organic acids to which R2 is tolerant. (C) 2008 Elsevier B.V. All rights reserved.
学科主题	Engineering ; Environmental; Engineering ; Civil; Environmental Sciences
收录类别	SCI
资助信息	Knowledge Innovation, Chinese Academy of Sciences [kzcx1-yw-06-03]; National High Technology Research and Development Program of China [2007AA061101]; National Basic Research Program of China [2004CB418506]
语种	英语
WOS记录号	WOS:000263149400003
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54241]
专题	沈阳应用生态研究所_沈阳应用生态研究所_期刊论文
推荐引用方式 GB/T 7714	Ren, WX,Li, PJ,Zheng, L,et al. Effects of dissolved low molecular weight organic acids on oxidation of ferrous iron by Acidithiobacillus ferrooxidans[J]. JOURNAL OF HAZARDOUS MATERIALS,2009,162(1):17-22.
APA	Ren, WX,Li, PJ,Zheng, L,Fan, SX,&Verhozina, VA.(2009).Effects of dissolved low molecular weight organic acids on oxidation of ferrous iron by Acidithiobacillus ferrooxidans.JOURNAL OF HAZARDOUS MATERIALS,162(1),17-22.
MLA	Ren, WX,et al."Effects of dissolved low molecular weight organic acids on oxidation of ferrous iron by Acidithiobacillus ferrooxidans".JOURNAL OF HAZARDOUS MATERIALS 162.1(2009):17-22.