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Removal of malachite green and safranin dye from aqueous solution by adsorption using banana peduncle
J. Chukki,
Published in Scientific Publishers
2015
Volume: 35
   
Issue: 4
Pages: 322 - 328
Abstract
The adsorption potential of banana peduncle, a naturally available agricultural waste for the removal of malachite green (MG) and safranin (SF) dye from aqueous solution was studied. Batch experiments were carried out to identify the effect of various process parameters including pH (4-9), stirring speed (90-180 rpm), contact time (5-120 min), temperature (25-35°C), initial dye concentration (10-150 mg/L) and adsorbent dosage (0.1-0.8 g/100 mL for MG and 0.02-0.16 g/100 mL for SF) on dye removal. Maximum percentage removal of MG and SF was obtained as 97.6% and 85.2%, respectively. The optimum conditions were found to be pH-7.0, adsorbent dose-0.4 g/100 mL, stirring speed-150 rpm, contact time-30 min for an initial dye concentration of 50 mg/L at 30°C for MG, whereas for SF dye, the optimum conditions were found to be pH-7.0, adsorbent dose-0.1 g/100mL, stirring speed-150, contact time-60 min for an initial dye concentration of 50 mg/L at 30°C. Adsorption kinetics was analyzed by pseudo-first order and pseudo-second order kinetic models. It was found that the adsorption process for both the dyes followed the pseudo-second order kinetic model. Based on the investigation, it has been demonstrated that the banana peduncle has good potential for effective adsorption of mlachite green and safranin dye. © 2015 - Kalpana Corporation.
About the journal
JournalIndian Journal of Environmental Protection
PublisherScientific Publishers
ISSN02537141