Date of Award

2018

Degree Type

Thesis

Degree Name

Master of Science in Environmental Engineering

Department

Civil and Environmental Engineering

Subject Headings

Chemical Engineering, Civil Engineering, Environmental Engineering, Toxicology

Abstract

The release of dye waste water into environment causes harm to aquatic life when they reach drains or other water sources. They pollute the soil and causes change in cycles of plant and animal life through bio-accumulation and nutrient cycle. Dyes which form residue or precipitate causes mutations or changes in the DNA of living organisms in and around the area of release of the dye into atmosphere. In this thesis, several runs were attempted to treat the synthetically prepared dye waste water using dehydrated peanut hull. The initial dye waste water samples were all collected and checked for absorbance, transmittance, pH and Organic Carbon content. Then the prepared samples were treated with the dehydrated peanut hull. The peanut hull was used as a media on which the dye particles were adsorbed. The adsorbed dye particles were along with the peanut hull by micro fi techniques. The wastes were disposed and the surpernatant was collected and checked for the readings of absorbance, transmittance, pH and organic carbon content. The values were later compared, tabulated and graphs were drawn to study the efficiency of the treatment. In this research, description of the dyes and their properties, adsorbent and its sizes and dosages, equipment used to conduct the experiments and techniques by which the treatment process of dye waste water was carried out was provided. The results indicated that the dyes with lower molecular weight gave better results of color removal than the dyes with higher molecular weight and the smaller particle size of the adsorbent gave better results of color removal than the larger particle size because of larger surface area.

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