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

文献类型：期刊论文

作者Zhang, Gaosheng1,2; Liu, Huijuan1; Liu, Ruiping1; Qu, Jiuhui1
刊名JOURNAL OF HAZARDOUS MATERIALS
出版日期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
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
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
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
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.

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来源：烟台海岸带研究所

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