General Information
    • ISSN: 2010-0221
    • Frequency: Bimonthly
    • DOI: 10.18178/IJCEA
    • Editor-in-Chief: Prof. Dr. Shen-Ming Chen
    • Executive Editor: Mr. Ron C. Wu
    • Abstracting/ Indexing: Chemical Abstracts Services (CAS), Ulrich's Periodicals Directory, CABI, Electronic Journals Library, Google Scholar, ProQuest, and Crossref
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Editor-in-chief
Prof. Dr. Shen-Ming Chen
National Taipei University of Technology, Taiwan
 

IJCEA 2010 Vol.1(4): 342-345 ISSN: 2010-0221
DOI: 10.7763/IJCEA.2010.V1.59

Sorption Studies of Methylene Blue on Silica Gel

R. W. Gaikwad and S. A. Misal

Abstract—The removal of methylene blue (a basic dye) from its aqueous solution by adsorption on silica gel has been carried out. It has been noted that low adsorbate concentration, low temperature and basic medium favor the removal of the dye. A 95.2% removal of the methylene blue was achieved at 25 mg/liter dose, 35OC & at pH 10.The kinetics studies were made using the model suggested by Langergren. The rate constants were found to be 1.22/min for 30OC and 6.58/min for 35OC. The equilibrium data fits well in the Langmuir and Freundlich model of adsorption. Effect of temperature was studied. Fixed bed studies were made in a glass column. It was found that at 1.6cm of adsorbent bed height, 97.6% removal was possible. The adsorption capacity of silica gel has been estimated as 195 mg/liter in fixed bed study.

Index Terms—basic dye, textile wastewater, adsorption,silica gel, capacity.

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Cite: R. W. Gaikwad and S. A. Misal, "Sorption Studies of Methylene Blue on Silica Gel," International  Journal  of Chemical Engineering and Applications vol. 1, no. 4, pp. 342-345, 2010.

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