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《Non-Metallic Mines》 2008-04
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Adsorption of Cd~(2+) in Wastewater with Modified Attapulgite-Chitosan Adsorbent

Li Zengxin Xue Shuyun Wang Tong Meng Yun (Department of Chemistry, Teachers College of Qingdao University, Qingdao 266071)  
In order to offering theory for treatment of Cd2+ pollution wastewater, a compound adsorbent was prepared with the combination of chitosan and attapulgite. Attapulgite was added in chitosan slurry of 90% the degree of deacetylation to prepare adsorbent.The mass ratio of chitosan gel and attapulgite was 2∶1. Chitosan loading rate on attapulgite was 32.6% at 700℃. Its adsorptivity toward Cd2+ was studied and results show thatwhen the dosage of the adsorbent is 15g/L, the mass concentration of Cd2+ in wastewater does not exceed 200mg/L, the pH value is 6~8, the adsorption equilibrium time is about 5min and Cd2+ removal efficiency is 97%.
【Fund】: 青岛市科技发展计划项目(05-1-NS-58)
【CateGory Index】: X703
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