期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 2, 期 12, 页码 2722-2729出版社
AMER CHEMICAL SOC
DOI: 10.1021/sc500458x
关键词
Arsenic; Adsorption; Lanthanum; Zirconium; Glutamic acid; Sawdust; Isotherms; Kinetics
资金
- Environment and Water Industry Programme Office (EWI) under the National Research Foundation of Singapore [PUBPP 21100/36/2, NUS WBS R-706-002-013-290, R-143-000-458-750, R-143-000-458-731]
- Department of Chemistry and NUS-Environmental Research Institute, National University of Singapore
- EWI
Environmentally friendly and cost-effective adsorbent materials for arsenic extraction are needed for removing pollutants from groundwater. Here, lanthanum or zirconium oxide nanoparticle-incorporated sawdust was used for the removal of arsenic anions from water. The chemically modified sawdust was fully characterized and used for extraction of arsenic from water. The influences of ionic strength, pH, and interfering ionic pollutants toward the extraction efficiency of arsenic anions were investigated to understand the mechanism. ZrO2-sawdust showed extraction capacities of 29 and 12 mg/g for arsenite and arsenate anions, respectively, while La(2)O(3-)sawdust extracted arsenite (22 mg/g) and arsenate (28 mg/g) anions efficiently. Desorption studies were performed on surface-modified sawdust to check the recyclability. La2O3-sawdust can be fully regenerated with no change in arsenic removal efficiency, while ZrO2-sawdust retains similar to 50% of its adsorption efficiency. Such modified renewable bioadsorbents are useful for developing environmentally friendly materials for water purification.
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