期刊
COLLOIDS AND SURFACES B-BIOINTERFACES
卷 70, 期 1, 页码 46-52出版社
ELSEVIER
DOI: 10.1016/j.colsurfb.2008.12.006
关键词
Modified wheat straw (MWS); Phosphate; Adsorption kinetics; Column adsorption; Activation energy
资金
- National Natural Science Foundation of China [50878121]
- Science and Technology Development Key Program of Shandong Province, China [2006GG2206007]
- Science and Technology Key Research Project of Environmental Protection of Shandong Province, China [[2006]005]
- NATIONAL CANCER INSTITUTE [P30CA016672] Funding Source: NIH RePORTER
Kinetic and column adsorption of phosphate from aqueous solution using modified wheat residue (MWS) as an adsorbent were studied in a batch reactor. The respective characteristic rate constants and activation energy were presented after linear and non-linear fitting. In addition, the effects of influent concentration of phosphate and flow rates on the column adsorption were also investigated. The results showed that the adsorption process could reach equilibrium in 10-15 min, and the pseudo-second-order equation generated the best agreement with experimental data for adsorption systems. The activation energy was 3.39 kJ mol(-1) indicating that the synthesis process was a physical adsorption. In the column tests, the increase of influent concentration and flow rate both decreased the breakthrough time, and the MWSS-packed column exhibited excellent phosphate removal from aqueous solution. These results provide strong evidence of the potential of MWS for the technological applications of phosphate removal from aqueous solutions. (C) 2008 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据