Factorial experimental design applied to adsorption of cadmium on activated alumina

Journal of Water Reuse and Desalination

Hamrouni, Béchir¹  Marzouk, Ikhlass¹  Mtaallah, Salma¹ 

[1] Université de Tunis El Manar, Faculté des Sciences de Tunis, Unité de recherche traitement et dessalement des eaux, 2092 Manar II, Tunisia E-mail:

关键词: adsorption;    cadmium;    factorial design;    removal;    wastewater;   

DOI  :  10.2166/wrd.2017.112

学科分类：工程和技术（综合）

来源: IWA Publishing

【 摘 要 】

The effective removal of heavy metals from industrial wastewater is a very important issue for many countries. This paper examines the removal of cadmium ions from aqueous solutions and industrial effluents by adsorption on activated alumina. The Brunauer–Emmett–Teller (BET) specific surface area, pore diameter and pore volume of the activated alumina were 156.7 m2/g, 58.4 Å and 0.23 cm3/g, respectively. Factorial experimental design was applied to evaluate the main effects and interactions among dose of activated alumina, initial cadmium concentration, pH of the solution and temperature. Analysis of variance, the F-test and the Student's t-test shows that dose of activated alumina, initial cadmium ion concentration and temperature are the most significant parameters affecting cadmium ion removal and pH is the least significant parameter. Under optimal conditions, cadmium removal from industrial effluent samples was >98%. Furthermore, desorption and regeneration studies were carried out in order to evaluate the cost-effectiveness of activated alumina.

【 授权许可】

CC BY-NC-ND