Insight of the removal of nickel and copper ions in fixed bed through acid activation and treatment with sodium of clay

Brazilian Journal of Chemical Engineering

A. F. De Almeida Neto¹  M. G. A. Vieira¹  M. G. C. Da Silva¹ 

[1] ,State University of Campinas, UNICAMP School of Chemical Engineering Department of Development of Processes and ProductsCampinas SP ,Brazil

关键词: Bentonite clay;    Adsorption;    Physicochemical characterization;    Metals removal;   

DOI  :  10.1590/0104-6632.20140314s00001976

来源: SciELO

【 摘 要 】

The bentonitic clays show good adsorptive characteristics, being used as alternative material for removing metals. This study evaluates several treatments (calcination, acid activation and treatment with sodium) of bentonite type Bofe in the removal of nickel and copper. Analyses were performed for physicochemical characterization of clay using the techniques: X-ray fluorescence (XRF), thermal analysis (TG and DTA), X-ray Diffraction (XRD), the ethylene glycol monoethyl ether (EGME) method, N2 adsorption (BET) and Scanning Electron Microscopy (SEM). Among the changes induced by acid activation and sodium transformations, the treatment with sodium chloride in fixed bed showed the highest performance in the monocomponent removal of nickel and copper.

【 授权许可】

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