Adsorption of Pb (II),Cu(II) and Cr(Ⅵ) from synthetic solution using pyrolusite- intermingled sewage sludge adsorbent
A new adsorbent was developed from municipal weight of SS carbon, and using ZnCl2 as chemical activation reagent. Characterized by N2-BET methods and SEM, the result showed that the surface area of the new adsorbent was increased to 354.198 m 2 /g compared with that of the unmi-xed sludge activated carbon 232.526 m 2 /gand total pore and micropore volume were increased. The effect of various parameters on adsorption process including contact time, solution pH, amount of adsorbent and initial concentration of metal ions were studied at room temperature to optimize the conditions for maximum adsorption. The results showed that the adsorption capacities of Pb(Ⅱ) ,Cu(Ⅱ) and Cr (Ⅵ)by the new adsorbent could reach 13.31mg/g, 15.73 mg/g and 17.88 mg/g respectively, while the initial Pb(Ⅱ) , Cu (Ⅱ) and Cr (Ⅵ)concentration was 50 mg/L at the liquid /solid ratio of 1 g/L. Kinetic results were shown that the new adsorbent was better efficient materials for removing the Pb(Ⅱ) ,Cu(Ⅱ) and Cr (Ⅵ) from the synthetic solution, and the preferential order was equal: Pb(Ⅱ)>Cu(Ⅱ)>Cr (Ⅵ).
Yijin Yang Hongyan Chen Xiandong Tan Xin xin Shengyu Liu
College of Resource and Environment, Chengdu University of Information Technology, Chengdu, Sichuan, China
国际会议
成都
英文
1-5
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）