Factorial experimental design applied to adsorption of cadmium on activated alumina | Zendy

Salma Mtaallah | Zendy; Ikhlass Marzouk Trifi | Zendy; Béchir Hamrouni | Zendy

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Factorial experimental design applied to adsorption of cadmium on activated alumina

Author(s) -

Salma Mtaallah,

Ikhlass Marzouk Trifi,

Béchir Hamrouni

Publication year - 2017

Publication title -

journal of water reuse and desalination

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.548

H-Index - 16

eISSN - 2408-9370

pISSN - 2220-1319

DOI - 10.2166/wrd.2017.112

Subject(s) - cadmium , adsorption , activated alumina , effluent , desorption , aqueous solution , wastewater , industrial wastewater treatment , factorial experiment , chemistry , fractional factorial design , nuclear chemistry , chemical engineering , materials science , environmental engineering , environmental science , mathematics , organic chemistry , statistics , engineering

The effective removal of heavy metals from industrial wastewater is a very important issues 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 m 2 /g, 58.4 A and 0.23 cm 3 /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 Student9s 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.

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