Abstract

S. A. Paul* and S. K. Chavan

An activated carbon as adsorbent is derived from waste tendu leaves (Diospyros melanoxylon) from local Beedi (Cigarette) industry for removal of sulphur dye from textile waste water. Tendue leaves were chemically treated with sulphuric acid and activated carbon prepared was analyzed by pH, moisture content, ash content, bulk density and BET surface area. The adsorption studies were performed as a function of different concentration of dye solution, contact time, pH and different adsorbent doses. The kinetics of the adsorption process follows the pseudo second-order kinetic model. Equilibrium data was analyzed using Langmuir, Freundlich and Tempkin isotherm models. The suitability of the data in different model of isotherm is determined from correlation coefficient (R2) value. The results of all isotherms model shows correlation coefficient (R2) value close to 1 and hence results fit into adsorption data. The results showed that tendu leaves a solid waste disposal from Beedi industry can be used as effective biosorbent for removal of sulphur dye from textile waste water.

Tendue leaves; adsorption; activated carbon; isotherm

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