Removal of heavy metals from a contaminated soil using tartaric acid

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	Removal of heavy metals from a contaminated soil using tartaric acid
	Ke, X ; Li, PJ ; Zhou, QX ; Zhang, Y ; Sun, TH
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2006
卷号	18 期号:4 页码:727-733
关键词	tartaric acid soil remediation heavy metals soil contamination
ISSN号	1001-0742
通讯作者	Li, PJ, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China
中文摘要	This study reports the feasibility of remediation of a heavy metal (HM) contaminated soil using tartaric acid, an environmentally-firiendly extractant. Batch experiments were performed to test the factors influencing remediation of the HM contaminated soil. An empirical model was employed to describe the kinetics of HM dissolution/desorption and to predict equilibrium concentrations of HMs in soil leachate. The changes of HMs in different fractions before and after tartaric acid treatment were also investigated. Tartaric acid solution containing HMs was regenerated by chestnut shells. Results show that utilization of tartaric acid was effective for removal of HMs from the contaminated soil, attaining 50%-60% of Cd, 40%-50% of Ph, 40%-50% of Cu and 20%-30% of Zn in the pH range of 3.5-4.0 within 24 h. Mass transfer coefficients for cadmium (Cd) and lead (Pb) were much higher than those for copper (Cu) and zinc (Zn). Sequential fractionations of treated and untreated soil samples showed that tartaric acid was effective in removing the exchangeable, carbonate fractions of Cd, Zn and Cu from the contaminated soil. The contents of Ph and Cu in Fe-Mn oxide fraciton were also significantly decreased by tartaric acid treatment. One hundred milliliters of tartaric acid solution containing HMs could be regenerated by 10 g chestnut shells in a batch reactor. Such a remediation procedure indicated that tartaric acid is a promising agent for remediation of HM contaminated soils. However, further research is needed before the method can be practically used for in situ remediation of contaminated sites.
学科主题	Environmental Sciences
收录类别	SCI
语种	英语
WOS记录号	WOS:000239048400018
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54917]
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	Ke, X,Li, PJ,Zhou, QX,et al. Removal of heavy metals from a contaminated soil using tartaric acid[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2006,18(4):727-733.
APA	Ke, X,Li, PJ,Zhou, QX,Zhang, Y,&Sun, TH.(2006).Removal of heavy metals from a contaminated soil using tartaric acid.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,18(4),727-733.
MLA	Ke, X,et al."Removal of heavy metals from a contaminated soil using tartaric acid".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 18.4(2006):727-733.