氧化改性橡椀单宁对铜离子溶液的吸附性

化工进展

氧化改性橡椀单宁对铜离子溶液的吸附性

李怡，罗学刚

西南科技大学生命科学与工程学院

出版日期:2009-02-05 发布日期:2009-02-05

Adsorption removal of copper from aqueous solution by oxidization modified valonia tannin

LI Yi，LUO Xuegang

School of Life Science and Engineering，Southwest Univerwsity of Science and Technology

Online:2009-02-05 Published:2009-02-05

摘要/Abstract

摘要： 以橡椀栲胶为原料，通过双氧水氧化降解改性，研究水解类橡椀单宁改性后对铜离子溶液的吸附沉淀以及pH值、金属溶液初始浓度对铜离子吸附沉淀容量的影响和规律。结果表明，氧化橡椀单宁对Cu2+的吸附平衡符合Freundlich方程。改性后吸附沉淀容量受初始浓度影响较大，初始浓度为20 mg/L时基本不发生吸附沉淀，试验最大初始浓度100 mg/L时吸附量达到39.300 mg/g。

Abstract: Valonia extract was oxidized by H2O2. The modified valonia tannin was investigated for adsorption removal of copper in aqueous solution. The influences of pH value，initial Cu2+ concentration on adsorption capacity of Cu were discussed. The result indicated that oxidization of valonia tannin was well-fitted by the Freundlich equation. The copper adsorption capacity of modified tannin was mainly influenced by the initial concentration. When it was 20mg/L，there was no adsorption，and the maximum adsorption capacity reached 39.300 mg/g when the initial concentration was 100 mg/L.

李怡，罗学刚. 氧化改性橡椀单宁对铜离子溶液的吸附性 [J]. 化工进展.

LI Yi，LUO Xuegang. Adsorption removal of copper from aqueous solution by oxidization modified valonia tannin[J]. Chemical Industry and Engineering Progree.