Journal
JOURNAL OF POLYMERS AND THE ENVIRONMENT
Volume 20, Issue 3, Pages 665-672Publisher
SPRINGER
DOI: 10.1007/s10924-012-0479-5
Keywords
Polylactide; Spend brewery grains; Films; Malachite green; Biosorption
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Batch experiments were conducted to study the biosorption of Malachite Green (MG) onto polylactide (PLA)/spent brewery grains (SBGs) films. Films were prepared by solvent-casting method using dichloromethane. Effects of contact time, pH, salt concentration, and optimal experimental condition was evaluated. At pH 6.89 and low salt concentration, Malachite Green was removed effectively. The isotherm data fitted the Freundlich model with 0.969 R-2 value and 0.738 slope implying chemisorptions process. The biosorption process followed pseudo-second order kinetics with calculated adsorption capacity at equilibrium (qe) of 0.572 mg/g at 23 A degrees C. The investigation showed that PLA/SBGs films are effective in dye removal from textile, paper and leather industries effluents.
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