Adsorption and Deposition of Cu (Ⅱ) on Modified Valonia Tannin

摘要：

The modified valonian tannin was prepared through sulfonated-mannich reaction and used to adsorb Cu (II) from the aqueous solutions. The adsorption capacity rapidly reached equilibrium within 2 hours. The effect of pH on adsorption was apparent, the amount of adsorption increased significantly as the pH increased from 2.0 to 4.0 and then leveled off at pH 4.0-6.0. Equilibrium data fitted well with Freundlich isotherm model compared to Langmuir isotherm model,indicating that adsorption takes place on heterogeneous surface of the modified valonia tannin. The adsorption capacity was increased by increasing initial concentrations. The maximum adsorption capacity of cooper ion was determined to be 56.200 mg/g at 100 mg/L concentration.

关键词： adsorption copper ion valonia tannin

作者: Yi LI Xuegang LUO Zhao LIU Yan Huang Xiaoyan Long

作者单位: School of Life Science and Engineering, Southwest University of Science and Technology,Mianyang 6210 Southwest University of Science and Technology, Mianyang 621010, Sichuan, China

会议类型: 国际会议

会议名称: 10th International Symposium on Eco-Materials Processing and Design(第10届国际生态材料加工与设计研讨会)

会议地点: 西安

会议语种:英文

页码: 555-558

在线出版日期: 2009-01-13（万方平台首次上网日期，不代表论文的发表时间）