Mobilization of arsenic from contaminated sediment by anionic and nonionic surfactants

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Mobilization of arsenic from contaminated sediment by anionic and nonionic surfactants
	Peng, Xianjia; Liang, Chuan
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES
	2017-06-01
卷号	56 期号:0 页码:281-289
关键词	Surfactants Arsenic Iron Sediment Mobilization
英文摘要	The increasing manufacture of surfactants and their wide application in industry, agriculture and household detergents have resulted in large amounts of surfactant residuals being discharged into water and distributed into sediment. Surfactants have the potential to enhance arsenic mobility, leading to risks to the environment and even human beings. In this study, batch and column experiments were conducted to investigate arsenic mobilization from contaminated sediment by the commercial anionic surfactants sodium dodecylbenzenesulfonate (SDBS), sodium dodecyl sulfate (SDS), sodium laureth sulfate (AES) and nonionic surfactants phenyl-polyethylene glycol (Triton X-100) and polyethylene glycol sorbitan monooleate (Tween-80). The ability of surfactants to mobilize arsenic followed the order AES > SDBS > SDS approximate to Triton X-100 > Tween 80. Arsenic mobilization by AES and Triton X-100 increased greatly with the increase of surfactant concentration and pH, while arsenic release by SDBS, SDS and Tween-80 slightly increased. The divalent ion Ca2+ caused greater reduction of arsenic mobilization than Na+. Sequential extraction experiments showed that the main fraction of arsenic mobilized was the specifically adsorbed fraction. Solid phase extraction showed that arsenate (As(V)) was the main species mobilized by surfactants, accounting for 65.05%-77.68% of the total mobilized arsenic. The mobilization of arsenic was positively correlated with the mobilization of iron species. The main fraction of mobilized arsenic was the dissolved fraction, accounting for 70% of total mobilized arsenic. (C) 2016 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39720]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Peng, Xianjia,Liang, Chuan. Mobilization of arsenic from contaminated sediment by anionic and nonionic surfactants[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2017,56(0):281-289.
APA	Peng, Xianjia,&Liang, Chuan.(2017).Mobilization of arsenic from contaminated sediment by anionic and nonionic surfactants.JOURNAL OF ENVIRONMENTAL SCIENCES,56(0),281-289.
MLA	Peng, Xianjia,et al."Mobilization of arsenic from contaminated sediment by anionic and nonionic surfactants".JOURNAL OF ENVIRONMENTAL SCIENCES 56.0(2017):281-289.