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C. Parvathi ¹, T. Maruthavanan ², S. Sivamani ³, C. Prakash ⁴, C. V. Koushik ⁴

Affiliations
1 Dept. of Chemistry, VSA School of Engineering, VSA Group of Institutions, Uthamasolapuram, Salem-636 010, IN
2 Dept. of Chemistry, Sona starch, Sona College of Technology, Salem 636 005, IN
3 Dept. of Biotechnology, VMKV Engineering College, Salem 636 005, IN
4 Dept. of Fashion Technology, Sona College of Technology, Salem 636 005, IN

Abstract

A carbon sorbent derived from an agricultural waste, tapioca peel was applied to study the removal of a reactive dye, Red Brown C4R from aqueous solution. Batch experiments were performed as a function of process parameters like agitation time, initial dye concentration and carbon dose. Modified Ritchie second order equation better predicted the kinetic results compared to other rate equations (pseudo first order&pseudo second order) tested. Among the isotherm models applied to the equilibrium data Freundlich model better predicted the experimental values. The adsorption capacity was 121.47 mg g^-1 at an initial pH of 6 and at 32±0.5°C. The adsorption capacity increased with increase in temperature. The influence of pH on dye removal was not significant. An optimum carbon dose of 1.2 g L^-1 was required for the maximum removal (96%) of dye from its 60 mg L^-1 solution.

Keywords

Adsorption, Red Brown C4R, Tapioca Peel, Activated Carbon, Kinetics, Isotherms

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C. Parvathi ¹, T. Maruthavanan ²

Affiliations
1 Department of Chemistry, VSA School of Engineering, Uthamasolapuram, Salem-636010, TN, IN
2 Department of Chemistry, Sonastarch, Sona College of Technology, Salem-636005, TN, IN

Abstract

The activated carbon produced from agricultural waste, Tapioca Peel, was used for the adsorption of reactive dye Megenta MB from its aqueous solutions. The preparation of activated carbon from agricultural waste could increase economic return and reduce pollution. In our project, adsorption studies were performed by varying parameters such as dye concentration, pH of the dye solution and contact time. The study investigates the removal of Megenta MB dye from its aqueous solution. The equilibrium adsorption data obtained were used to calculate the Freundlich and Langmuir isotherm parameters. Higher adsorption percentages were observed at lower concentrations of Megenta MB. Optimum pH value for dye adsorption was determined as 7. Maximum dye was removed within 120 min after the beginning for every experiment.

Keywords

Tapioca Peel, Megenta MB, Effluent Treatment, Textile Dye, Water Pollution, Environment, Industry, India

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Leela Raman ¹, G. Vasanthi ¹, C. Parvathi ¹, N. Vasumathi ¹, A. Rawal ¹, K. Visweswara Rao ¹, N. Balakrishna ¹

Affiliations
1 National Institute of Nutiition, Indian Council of Medical Research, Jamai Osmania PO., Hyderabad 500007, IN

Abstract

In the last decade, with WHO code for breast feeding and marketing for infant weaning foods, the breast feeding practices have gained considerable importance. It is well known that breast fed infants have lower morbidity and mortality in different countries.

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