Kinetic modeling of antimony(V) adsorption-desorption and transport in soils

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	Kinetic modeling of antimony(V) adsorption-desorption and transport in soils
	Zhang, Hua1 ; Li, Lulu 2; Zhou, Shiwei 1
刊名	CHEMOSPHERE
	2014-09-01
卷号	111 页码:434-440
关键词	Antimony Soil Adsorption-desorption Transport Mobility
ISSN号	0045-6535
通讯作者	Zhang, H (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Processes & Ecol Re, Yantai, Shandong, Peoples R China. hzhang@yic.ac.cn
产权排序	[Zhang, Hua; Zhou, Shiwei] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Processes & Ecol Re, Yantai, Shandong, Peoples R China; [Li, Lulu] Qingdao Univ, Coll Chem & Environm Engn, Qingdao 266071, Shandong, Peoples R China
中文摘要	Antimonate [Sb(V)] adsorption-desorption and transport in an acidic red soil (Yingtan) and a calcareous soil (Huanjiang) was investigated using kinetic batch and miscible displacement experiments. Different formulations of a multi-reaction model (MRM) were evaluated for their capabilities of describing the retention and transport mechanisms of Sb(V) in soils. The experimental results showed that adsorption of Sb(V) by two soils was kinetically controlled and largely irreversible. The Sb(V) adsorption capacity and kinetic rate of the acidic red soil was much higher than that of the calcareous soil. The asymmetrical breakthrough curves indicated the strong dominance of non-equilibrium retention of Sb(V). A four step sequential extraction procedure provided evidence that majority of applied Sb(V) was irreversibly retained. A formulation of MRM with two kinetic sorption sites (reversible and irreversible) successfully described Sb(V) adsorption-desorption data. The use of kinetic batch rate coefficients for predictions of breakthrough curves (BTCs) underestimated Sb(V) retention and overestimated its mobility. In an inverse mode with optimized rate coefficients, the MRM formulation was capable of simulating Sb(V) transport in soil columns. (C) 2014 Elsevier Ltd. All rights reserved.
英文摘要	Antimonate [Sb(V)] adsorption-desorption and transport in an acidic red soil (Yingtan) and a calcareous soil (Huanjiang) was investigated using kinetic batch and miscible displacement experiments. Different formulations of a multi-reaction model (MRM) were evaluated for their capabilities of describing the retention and transport mechanisms of Sb(V) in soils. The experimental results showed that adsorption of Sb(V) by two soils was kinetically controlled and largely irreversible. The Sb(V) adsorption capacity and kinetic rate of the acidic red soil was much higher than that of the calcareous soil. The asymmetrical breakthrough curves indicated the strong dominance of non-equilibrium retention of Sb(V). A four step sequential extraction procedure provided evidence that majority of applied Sb(V) was irreversibly retained. A formulation of MRM with two kinetic sorption sites (reversible and irreversible) successfully described Sb(V) adsorption-desorption data. The use of kinetic batch rate coefficients for predictions of breakthrough curves (BTCs) underestimated Sb(V) retention and overestimated its mobility. In an inverse mode with optimized rate coefficients, the MRM formulation was capable of simulating Sb(V) transport in soil columns. (C) 2014 Elsevier Ltd. All rights reserved.
学科主题	Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	SORPTION BEHAVIOR ; CLAY-MINERALS ; IRON-OXIDE ; SPECIATION ; MOBILITY ; CHINA ; AVAILABILITY ; SEDIMENTS ; SB(III) ; SB(V)
收录类别	SCI
语种	英语
WOS记录号	WOS:000339601600058
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/8714]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Processes & Ecol Re, Yantai, Shandong, Peoples R China 2.Qingdao Univ, Coll Chem & Environm Engn, Qingdao 266071, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Hua,Li, Lulu,Zhou, Shiwei. Kinetic modeling of antimony(V) adsorption-desorption and transport in soils[J]. CHEMOSPHERE,2014,111:434-440.
APA	Zhang, Hua,Li, Lulu,&Zhou, Shiwei.(2014).Kinetic modeling of antimony(V) adsorption-desorption and transport in soils.CHEMOSPHERE,111,434-440.
MLA	Zhang, Hua,et al."Kinetic modeling of antimony(V) adsorption-desorption and transport in soils".CHEMOSPHERE 111(2014):434-440.