An Extended Langmuir Adsorption in a Binary-Solute As(III)/As(V) System using Nanoporous Alumina
Arsenic is usually found in the form of inorganic oxyanions. Arsenate (I.e.,HAsO4 2- ) is the primary anion in aerobic surface water, and arsenite (I.e., H3AsO3 or H2AsO3-) is the primary species in groundwater. Arsenate has a valence state of As(V), while arsenite is As(III). To remove arsenic, we has been studied the usage of nanoporous aluminas (NA) as potential adsorbents. The maximum up-take of As(V) by NA was found to be 7 times higher 121 mg of As(V)/g and 47 mg of As(III)/g than that of conventional activated alumina. This experiment was conducted with the single stock solution. Although considerable uptake has been reported for the adsorption of either single-component arsenite or arsenate by various adsorbents, many natural streams or industrial effluents contain several other components. Therefore, in this study, we reported an extended Langmuir adsorption in a binary-solute system using NA. The results would provide basic parameters for the design of adsorption process of As(III) and As(V) in a binary-solute system.
Arsenic Nanoporous alumina Adsorption Extended Langmuir
Younghun Kim Enjoo Bae You Jung Kim Jongheop Yi
Department of Chemical Engineering, Kwangwoon University, Seoul 139-701, Korea School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea
国际会议
The 5th International Conference on Separation Science and Technology(第五届国际分离科学与技术会议)
北京
英文
2007-10-14（万方平台首次上网日期，不代表论文的发表时间）