Adsorption behavior and mechanism of arsenate at Fe-Mn binary oxide/water interface

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 > 污染过程与控制实验室

	Adsorption behavior and mechanism of arsenate at Fe-Mn binary oxide/water interface
	Zhang, Gaosheng1,2 ; Liu, Huijuan 1; Liu, Ruiping 1; Qu, Jiuhui 1
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2009-09-15
卷号	168 期号:2-3 页码:820-825
关键词	Fe-mn Binary Oxide Arsenate Adsorption Mechanism Specific Adsorption
ISSN号	0304-3894
通讯作者	Qu, JH, Chinese Acad Sci, State Key Lab Environm Aquat Chem, Ecoenvironm Sci Res Ctr, POB 2871, Beijing 100085, Peoples R China
产权排序	Chinese Acad Sci, State Key Lab Environm Aquat Chem, Ecoenvironm Sci Res Ctr;Chinese Acad Sci, Yantai Inst Coastal Zone Res Sustainable Dev
文献子类	Article
英文摘要	Preliminary study revealed that a prepared Fe-Mn binary oxide adsorbent with a Fe:Mn molar ratio of 3:1 was more effective for As(V) removal than pure amorphous FeOOH, which MS unanticipated. In this paper, the As(V) adsorption capacities of Fe-Mn binary oxide and amorphous FeOOH were compared in detail. Furthermore, the adsorption behaviors as well as adsorption mechanism of As(V) at the Fe-Mn binary oxide/water interface were investigated. The higher uptake of As(V) by the Fe-Mn binary oxide may be due to its higher surface area (265 m(2)/g) and pore volume (0.47 cm(3)/g) than those of amorphous FeOOH. The As(V) adsorption process on the Fe-Mn binary oxide is endothermic and the increase of temperature is favoring its adsorption. A slight increase in the As(V) adsorption was observed with increasing ionic strength of the solution, which indicated that As(V)anions might form inner-sphere surface complexes at the oxide/water interface. The Zeta potential along with FTIR analysis confirmed further the formation of inner-sphere surface complexes between As(V) anions and the surface of Fe-Mn binary oxide. In addition, the influences of coexisting ions such as phosphate, bicarbonate, silicate, sulfate, chloride, calcium and magnesium which are generally present in groundwater on As(V) adsorption were examined. Among the tested anions, chloride and sulfate had no significant effect on As(V) removal, silicate decreased obviously the As(V) removal, while phosphate caused the greatest percentage decrease in As(V) adsorption. On the contrary, the presence of cations of Ca(2+) and Mg(2+) enhanced the adsorption of As(V). (C) 2009 Elsevier B.V. All rights reserved.
学科主题	Engineering, Environmental ; Engineering, Civil ; Environmental Sciences
URL标识	查看原文
WOS关键词	OXIDE ADSORBENT ; SURFACE-CHEMISTRY ; NATURAL-WATERS ; REMOVAL ; ARSENITE ; SORPTION ; HYDROXIDE ; ANIONS
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000268200700035
资助机构	Funds for Creative Research Groups of China [50621804]; National Natural Science Foundation of China [20577063]
公开日期	2011-07-05
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/3515]
专题	烟台海岸带研究所_污染过程与控制实验室
作者单位	1.Chinese Acad Sci, State Key Lab Environm Aquat Chem, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res Sustainable Dev, Yantai 264003, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Gaosheng,Liu, Huijuan,Liu, Ruiping,et al. Adsorption behavior and mechanism of arsenate at Fe-Mn binary oxide/water interface[J]. JOURNAL OF HAZARDOUS MATERIALS,2009,168(2-3):820-825.
APA	Zhang, Gaosheng,Liu, Huijuan,Liu, Ruiping,&Qu, Jiuhui.(2009).Adsorption behavior and mechanism of arsenate at Fe-Mn binary oxide/water interface.JOURNAL OF HAZARDOUS MATERIALS,168(2-3),820-825.
MLA	Zhang, Gaosheng,et al."Adsorption behavior and mechanism of arsenate at Fe-Mn binary oxide/water interface".JOURNAL OF HAZARDOUS MATERIALS 168.2-3(2009):820-825.