Removal of a Basic Textile Dye from Aqueous Solution by Adsorption on Regenerated Clay

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• 作者：Chafika Meziti^a ; ^{chafikah@yahoo.fr} ; Abdelhamid Boukerroui^b
• 关键词：Bleaching earth ; Regeneration ; Adsorption ; Basic textile dye ; Sorption isotherms ; Sorption kinetic
• 刊名：Procedia Engineering
• 出版年：2012
• 出版时间：2012
• 年：2012
• 卷：33
• 期：Complete
• 页码：303-312
• 全文大小：388 K

文摘

This work presents a study on the reuse of spent bleaching earth (SBE). The SBE waste was regenerated by impregnation in NH4Cl solution followed by heat treatment at 400 ¡ãC and washing with 1 M HCl. The regenerated material (RSBE) was used in the treatment of a basic textile dye solution. Results showed that the adsorption phenomenon governing this process was best described by the Langmuir model. The adsorption kinetic process was found to follow a pseudo second order model.