Removal of Zn (II) from Aqueous Solution by Copolymer of Grafting Acrylic Acid onto Deacetylated Konjac Glucomannan
Removal of Zn (Ⅱ) from aqueous solution by copolymer of grafting acrylic acid onto deacetylated konjac glucomannan (GADKGM) was evaluated in a bath adsorption system. Operational parameters such as pH, time, temperature and initial concentration were studied in present work. The adsorption process was relatively fast and highly effective. Removal efficiency for Zn(Ⅱ) solution at the concentration of 100 mg/L was 98% at optimum operational pH of 6. The removal rate for Zn(Ⅱ) on GADKGM was very fast and the removal efficiency can attain about 90% within 5 min. Isotherm adsorption data were described by Langrnuir model with monolayer adsorption capacity of 125 mg/g. The negative values of thermodynamic parameters of □G° and □ S° indicated that adsorption process was a spontaneous process and randomness at the solid/liquid interface was decreased during the adsorption process.
Deacetylated Konjac Glucomannan graft acrylic acid Removal Zn(Ⅱ)
Feng Liu Xuegang Luo Xiaoyan Lin
Department of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, China
国际会议
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)
西安
英文
611-614
2009-01-13（万方平台首次上网日期，不代表论文的发表时间）