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Title: Theoretical and Experimental Investigations for Removal of Pollutants using Adsorption
Researcher: SURESH GUPTA
Guide(s): B. V. Babu
Keywords: Hexavalent chromium; Low cost adsorbents; activated tamarind seeds; activated neem leaves; sawdust; activated flyash; activated carbon; adsorption isotherms; adsorption kinetics; desorption; interference; cost analysis; mathematical model; breakthrough curve; pore diffusion; surface diffusion.
University: Birla Institute of Technology and Science
Completed Date: 1/8/2008
Abstract: Water is one of the most important elements on earth. Every living being needs water for its survival. Without water, plants, animals, microbes everything will perish. Population growth - coupled with industrialization and urbanization has resulted in an increasing demand for water thus leading to water crisis and serious consequences on the environment. A rapid industrialization has lead to the industrial effluents and sewage, resulting in water pollution which leads to water crisis in India and all over the world. The effluent stream coming out of the industries is mainly comprised of hazardous chemicals and heavy metal ions such as chromium, nickel, copper, lead, arsenic, etc. Chromium is abundant in nature and has a dominant presence in most of the effluent streams as compared to other heavy metal ions. The presence of highly toxic and carcinogenic hexavalent chromium (Cr(VI)) in effluent streams is a major environmental issue. The electroplating and tannery industry effluents are the major source for the Cr(VI) production in wastewater streams. newlineThe present work comprises of a solution for the treatment of effluent streams containing Cr(VI). Adsorption process which is a cost effective and versatile method for the removal of Cr(VI) is selected in present study. Low cost adsorbents are developed from the naturally and abundantly available biodegradable materials to make the adsorption process economically feasible. The study includes the development of low cost adsorbents such as activated tamarind seeds, activated neem leaves, sawdust, and activated flyash. Out of these adsorbents, activated tamarind seeds, activated neem leaves and activated flyash are subjected to physical and chemical activation procedures and sawdust is treated physically. The performance of above adsorbents are compared with the commercially available activated carbon which is a well known adsorbent used for the removal of Cr(VI) from wastewater. newline newline
Pagination: 39MB
Appears in Departments:Chemical Engineering

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table of contents_6.doc41.5 kBMicrosoft WordView/Open

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