Arsenic removal from water by iron-sulphide minerals

	Arsenic removal from water by iron-sulphide minerals
	Han, JT ; Fyfe, WS
刊名	CHINESE SCIENCE BULLETIN
	2000-08-01
卷号	45 期号:15 页码:1430-1434
关键词	arsenic contamination arsenic removal iron-sulphide minerals
ISSN号	1001-6538
文献子类	Article
英文摘要	In bench-scaled experiments, iron-sulphide minerals, pyrite and pyrrhotite are used as adsorbents for arsenic removal from As-spiked water of As5+ and As3+ species. The adsorption rate, efficiency, As-adsorption stability and the associated pH conditions have been examined. Observations indicate that these iron-sulphide minerals are very efficient to adsorb arsenic from water for both As5+ and As3+ species. Similar to other studies, As3+-adsorption shows a slower rate than As3+. The stability of the adsorbed arsenic seems closely related to the pH values of the solution. A lower pH level commonly less than 4.0 is required to protect the adsorbed arsenic from serious oxidation and backward release. Fining of the mineral powders and shaking of the solution during adsorption enhance the adsorption efficiency and adsorption rate. For practical use of the method presented in this study, the waste produced should be managed with great care to keep it from redistribution over water system. A further study of the protection for the waste from oxidation on real water systems will greatly enhance the application of the strong ability of arsenic adsorption by these minerals, which is observed from this study.
WOS关键词	DRINKING-WATER ; WEST-BENGAL ; INDIA
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000089247500021
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/75967]
专题	中国科学院地质与地球物理研究所
通讯作者	Han, JT
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Univ Western Ontario, Dept Earth Sci, London, ON N6A 5B7, Canada
推荐引用方式 GB/T 7714	Han, JT,Fyfe, WS. Arsenic removal from water by iron-sulphide minerals[J]. CHINESE SCIENCE BULLETIN,2000,45(15):1430-1434.
APA	Han, JT,&Fyfe, WS.(2000).Arsenic removal from water by iron-sulphide minerals.CHINESE SCIENCE BULLETIN,45(15),1430-1434.
MLA	Han, JT,et al."Arsenic removal from water by iron-sulphide minerals".CHINESE SCIENCE BULLETIN 45.15(2000):1430-1434.