Removal of iron from drinking water by electrocoagulation: Adsorption and kinetics studies

The present study provides an electrocoagulation process for the removal of iron from drinking water with aluminum alloy as the anode and stainless steel as the cathode. The studies were carried out as a function of pH, temperature and current density. The adsorption capacity was evaluated with both...

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Bibliographic Details
Published inThe Korean journal of chemical engineering Vol. 26; no. 4; pp. 1058 - 1064
Main Authors Vasudevan, Subramanyan, Jayaraj, Jeganathan, Lakshmi, Jothinathan, Sozhan, Ganapathy
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.07.2009
한국화학공학회
Subjects
Biotechnology
Catalysis
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
Materials Science
화학공학
Removal
Iron
Electrocoagulation
Kinetics
Adsorption
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Summary:The present study provides an electrocoagulation process for the removal of iron from drinking water with aluminum alloy as the anode and stainless steel as the cathode. The studies were carried out as a function of pH, temperature and current density. The adsorption capacity was evaluated with both the Langmuir and the Freundlich isotherm models. The results showed that the maximum removal efficiency of 98.8% was achieved at a current density of 0.06 A dm −2 , at a pH of 6.5. The adsorption of iron preferably fitting the Langmuir adsorption isotherm suggests monolayer coverage of adsorbed molecules. The adsorption process follows second-order kinetics. Temperature studies showed that adsorption was endothermic and spontaneous in nature.
Bibliography:http://www.cheric.org/article/725250
G704-000406.2009.26.4.002
ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-009-0176-9