气候变化领域集成服务门户(CCPortal): Prediction of uranium and technetium sorption during titration of contaminated acidic groundwater

CCPortal

DOI	10.1016/j.jhazmat.2010.01.040
	Prediction of uranium and technetium sorption during titration of contaminated acidic groundwater
	Zhang, Fan; Parker, Jack C.; Brooks, Scott C.; Watson, David B.; Jardine, Philip M.; Gu, Baohua
通讯作者	Zhang, F (通讯作者)
发表日期	2010
ISSN	0304-3894
EISSN	1873-3336
起始页码	42
结束页码	48
卷号	178 期号:1-3
英文摘要	This study investigates uranium and technetium sorption onto aluminum and iron hydroxides during titration of acidic groundwater. The contaminated groundwater exhibits oxic conditions with high concentrations of NO3-, SO42-, U, Tc, and various metal cations. More than 90% of U and Tc was removed from the aqueous phase as Al and Fe precipitated above pH 5.5, but was partially resolublized at higher pH values. An equilibrium hydrolysis and precipitation reaction model adequately described variations in aqueous concentrations of metal cations. An anion exchange reaction model was incorporated to simulate sulfate, U and Tc sorption onto variably charged (pH-dependent) Al and Fe hydroxides. Modeling results indicate that competitive sorption/desorption on mixed mineral phases needs to be considered to adequately predict U and Tc mobility. The model could be useful for future studies of the speciation of U,Tc and co-existing ions during pre- and post-groundwater treatment practices. (C) 2010 Elsevier B.V. All rights reserved.
关键词	ADSORPTION TRANSPORT
英文关键词	Radionuclide; Sulfate; Aluminum; pH; Anion exchange; Model
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000278056300005
来源期刊	JOURNAL OF HAZARDOUS MATERIALS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257820
推荐引用方式 GB/T 7714	Zhang, Fan,Parker, Jack C.,Brooks, Scott C.,et al. Prediction of uranium and technetium sorption during titration of contaminated acidic groundwater[J]. 中国科学院青藏高原研究所,2010,178(1-3).
APA	Zhang, Fan,Parker, Jack C.,Brooks, Scott C.,Watson, David B.,Jardine, Philip M.,&Gu, Baohua.(2010).Prediction of uranium and technetium sorption during titration of contaminated acidic groundwater.JOURNAL OF HAZARDOUS MATERIALS,178(1-3).
MLA	Zhang, Fan,et al."Prediction of uranium and technetium sorption during titration of contaminated acidic groundwater".JOURNAL OF HAZARDOUS MATERIALS 178.1-3(2010).