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《Environmental Protection of Chemical Industry》 2014-04
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Preparation of CNTs-SA Composite Adsorbent and Adsorption of High Concentration Cr(Ⅲ)

Chen Yiping;Huang Yaoyi;College of Resources and Environment,Quanzhou Normal University;  
The environment friendly composite adsorbent CNTs-SA was prepared using carbon nanotubes(CNTs) and sodium alginate(SA) as raw materials,and was characterized by TEM and FTIR. The factors affecting the adsorption of Cr(Ⅲ) on CNTs-SA were studied by static adsorption method. The characterization results show that CNTs-SA surface has more —COOH and —C O groups than CNTs,which greatly improve the Cr(Ⅲ) adsorption effect. The experimental results show that:Under the conditions of room temperature,initial Cr(Ⅲ) mass concentration 4 000 mg/L,CNTs-SA dosage 21 mg/mL,solution pH 5,adsorption time 3 h and m(CNTs)∶V(SA)=1.0 mg/mL,the Cr(Ⅲ) adsorption capacity of CNTs-SA is 120 mg/g,and the Cr(Ⅲ) removal rate is 61.5%;The adsorption process fits well to Freundlich isotherm adsorption equation.
【Fund】: 福建省教育厅A类科技项目(JA12281);; 福建省高校服务海西建设重点项目(A102);; 泉州市科技局项目(2012Z117)
【CateGory Index】: TQ424;X703
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