Abstract

ADSORPTION OF METHYLENE BLUE ON CARBONIZED MATERIAL PREPARED FROM SEEDS OF POLYALTHIA LONGIFOLIA

Kavita S. Mundhe* and Anandrao A. Kale

ABSTRACT

In the present study an attempt has been made to investigate the potential of adsorbent, Carbonized Material prepared from Polyalthia longifolia seeds for the removal of Methylene blue from aqueous solution. In the present work batch mode studies are performed to develop all the supporting information on the sorption potential of prepared adsorbent. The effect of amount of adsorbent, initial concentration of dye solution and contact time, temperature and pH of solution is investigated. It is observed that as amount of adsorbent dose increases from 2 to 20 gL-1 percent adsorption increases from 74.55 to 92.73 % for a given initial MB concentration (Co = 20 mgL-1). The equilibrium time for the initial concentration from 20 to 4 0 mgL-1 was found to be 60 min. while for 50 mgL-1 MB solution it takes 120minutes. It is observed that as the temperature increases from 25 to 450C, % removal at equilibrium increases from 57.78 to 68.89 %. Removal of MB is favorable at basic pH. The correlation coefficient, R2 = 0.9937 indicates applicability of Langmuir isotherm for the equilibrium sorption data of MB using prepared CM. Few reports are available on the use of Polyalthia longifolia seeds as biosorbents. Adsorption experiments indicates Polyalthia longifolia seeds were effective as biosorbents for the removal of basic dye methylene blue from aqueous solution. It is alternative to cost effective adsorbents.

Keywords: Biosorbent, Polyalthia longifolia seeds, Adsorption Isotherms, Carbonized Material.