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Removal of Malachite Green from aqueous solution using degreased coffee bean

Title
Removal of Malachite Green from aqueous solution using degreased coffee bean
Authors
Baek M.-H.Ijagbemi C.O.O S.-J.Kim D.-S.
Ewha Authors
김동수
SCOPUS Author ID
김동수scopus
Issue Date
2010
Journal Title
Journal of Hazardous Materials
ISSN
0304-3894JCR Link
Citation
vol. 176, no. 41277, pp. 820 - 828
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
This study reports on the feasibility of employing degreased coffee beans (DCB) as adsorbent for Malachite Green (MG) removal in dyeing wastewater. The iodine value (IV), specific surface area (SSA) and porosity of the raw coffee beans (RCB) used in the study increased after the degreasing process, resulting in significant increase in the adsorption of MG onto DCB. Employing a batch experimental set-up, optimum conditions for complete color removal and adsorption of MG by DCB was studied considering parameters such as effect of degreasing process, adsorbent dosage, initial dye concentration, reaction temperature and pH. Adsorbed amount of MG by DCB increased with increasing DCB dosage and initial MG concentration. The rate of the adsorption reaction followed the pseudo second-order kinetics with the sorption isotherm well fitted to the Freundlich and the Langmuir isotherm models. Thermodynamic studies revealed that the adsorption processes is spontaneous and endothermic in nature. DCB has potentials for application as adsorbent for the removal of MG from dyeing process wastewater. © 2009 Elsevier B.V. All rights reserved.
DOI
10.1016/j.jhazmat.2009.11.110
Appears in Collections:
엘텍공과대학 > 환경공학전공 > Journal papers
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