Thermodynamic Study of Congo red Dye Adsorption Using Rice Husk Activated Carbon

International Journal of Research and Scientific Innovation (IJRSI) | Volume VII, Issue III, March 2020 | ISSN 2321–2705

Thermodynamic Study of Congo red Dye Adsorption Using Rice Husk Activated Carbon

Yunus M. M.*, Nuhu A.H.
Department of Chemistry, Yobe State University KM 7 Gujba Road, P.M.B.1144 Damaturu, Nigeria
*Corresponding Author

Abstract: – This work investigated the applicability of activated carbon prepared from local rice husk as adsorbent for effective removal of Congo red dye from aqueous solution. The study considered an agro based waste material which otherwise could be disposed, is employed and its efficiency in the removal of dye substance from contaminated wastewater was tested. The adsorbent was characterized using FTIR spectroscopy. The effects of physical parameters such as carbon content, moisture and pH values, bulk density and operational parameters which include, dye concentration, adsorbent dosage, contact time were investigated with respect to dye removing efficiency. The result showed that efficiency of dye adsorption on the adsorbent range from 34.30 to 83.35% within temperature values of 35 to 65oC.The results further indicated that, adsorption efficiency of the dye increases as contact time changed from 5 to 90 minutes, then became constant.

Key words: adsorbate, bulk density, FTIR Spectroscopy, micropore and peaks

I. INTRODUCTION

Nowadays, industrial technology has developed rapidly to accommodate the fast increasing population’s demand. The discharge of effluents that contained colored material from leather, food, paper, textile, and cosmetics, pharmaceutical and plastic industries into the environment poses serious problems to different forms of life (kornwipha et al., 2014).The effluents of serious concern are those of dye industries which have various environmental issues some of which include inhibiting sunlight penetration into water deceasing photosynthesis, high chemical oxygen demand as well as stagnant growth of microorganisms (Forgacs et al., 2004; Singh et al., 2013). Therefore, contaminated dye in wastewater needs removal before release into natural stream. The release of dyes into the environment has become a serious concern due to impacting color to water bodies and toxicity of these dyes and their bio-transformation products (Kar et al., 2009). Some dyes such as Congo red and methylene blue from textiles, printing and dyeing industries have complex molecular structure and are usually persistent against biodegradation, it becomes difficult to remove them by natural aquatic environment.

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