PEFTEC - Abstract

Abstract Information :

Dye is an important class of pollutant and is visually recognizable. Dyes are organic compounds used in various industries such as leather, textile, cosmetic, food, fur, drugs, cosmetic, paper and plastic to impart colour to the products. Environmental pollution caused by toxic azo dyes is a matter of great concern due to its hazardous nature. Methyl orange is a water-soluble dye extensively used in the textile industries, paper manufacturing, pharmaceutical, food industries and in research laboratories. Colour removal from effluents of these industries is very hard. Therefore, treatment of dye-contaminated wastewater is a major challenge. Biosorption is one of the methods used for the removal of dyes. In the present study, biosorption potential of powdered Pterospermum acerifolium leaves (30-50 mesh size) for methyl orange removal from aqueous solution has been investigated. To know the efficacy of this material, batch experiments were carried out at different initial pHs, biosorbent doses, contact times and temperatures (25, 35, and 45°C). The optimized pH for dye removal was found to be 2.0 at an adsorbent dose of 10 g/L at 25°C. Data obtained from isotherm studies were modeled using Langmuir and Freundlich equations. The biosorption kinetic experiment at different doses was also conducted and sorption data were modeled using pseudo first order and pseudo second order equations. The efficacy of the material showed that it could be an alternative to other expensive biosorbents.