Batch Removal of Chromium (VI) By Biosorption on to Banana Peels (Musa Paradisiaca L.)
- Author Satish A. Bhalerao
- Co-Author Amit S. Sharma
- DOI
- Country : India
- Subject : environmental sciences
Keywords : Biosorption, chromium (VI), banana peels (Musa paradisiaca L.), equilibrium study, adsorption isotherms, adsorption kinetics, thermodynamics
Abstract
There have been a number of studies considering the possibility of removing and recovering heavy metals from diluted solutions. These are due, principally, because of the commercial value of some metals as well as in the environmental impact caused by them. Biosorption are a process which utilizes inexpensive dead biomass to sequester toxic heavy metals. It is particularly feasible to use for removal of these contaminants from industrial effluents. In the present study work investigated the, banana peels (Musa paradisiaca L.) are an agro-industrial based waste material and these materials have the potential to sequester from chromium (VI) solutions. The influence and optimization of the solution pH, biomass dosage, and initial concentration of chromium (VI), contact time and temperature on biosorption performances have been experimentally verified. The optimum solution pH for chromium (VI) biosorption by biosorbent was 4.0 with the optimal removal 49.23%. The desorption efficiency was found to be 41.40% (0.1 M nitric acid), 34.32% (0.1 M hydrochloric acid) and 58.86% (0.1 M sulphuric acid).Langmuir, Freundlich, Dubinin-kaganer-Redushkevich (DKR) and Temkin were investigated and the adsorption isotherm data were best represented by the Langmuir isotherm. Results clearly indicates that the pseudo-second-order kinetic model (R2 =0.9794) was found to be correlate the experimental data strongest than other three kinetic models and this suggests that chemical biosorption process was more dominant. Banana peels (Musa paradisiaca L.) is effective, efficient and economic biosorbent, has potential for the uptake of chromium (VI) from aqueous solutions can be used for practical application of treatment of industrial effluent.
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