Adsorption of Phosphate and Arsenate on Polynuclear Aluminum-Oxalate Precipitate: Spectroscopic and Adsorption Investigations
Aluminum organic coprecipitates play important roles in the transport of oxyanions in soil environment. Al13-Oxalate precipitate representing common aluminum organomineral components in soil environment was prepared to investigate the adsorption behavior of phosphate and arsenate on noncrystalline aluminum precipitate. Important thermodynamic parameters (△ G, △H and △S) of adsorption reactions were evaluated using macroscopic adsorption data and equations. The low values of active energy of arsenate and phosphate adsorption reactions the adsorption reaction basically is a diffusion process. The XPS studies indicate that phosphate has stronger chemical interaction with substrate than arsenate. FTIR spectroscopic studies have provide evidence for the formation of two different types of complexes in substrate.
Liu Jing Li Wenjie
The Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Southwest U School of Environment and Resource, Southwest University of Science and Technology Mianyang, China
国际会议
成都
英文
1-5
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）