International Journal of Innovative Research and Development

Abstract

Chromium is highly toxic metal ions and considered as a priority pollutant released from various chemical industries like electroplating mixing activities, smelting, battery manufacture and tanneries etc. Effluents have been excessively released in to the environment due to rapid industrialization and have created a global concern. Unlike organic wastes, chromium (VI) effluents are non biodegradable and they can be accumulated in living tissue, causing various diseases and disorder. Therefore it must be removed before discharge. In the present study, experiment results carried out in batch adsorption process by using fly ash for removal of chromium (VI) were studied. The various parameters such as solution pH, initial chromium, and adsorbent dosage on the adsorption chromium concentration were studied and presented. The maximum removal of chromium (VI) at 92% was observed at pH of 8.0, adsorbent dosage of 10g/25ml and contact time of 48 hours in tannery effluents.

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Abstract

The textile industry occupies a unique place in our country. During textile wet processing, a large volume of wastewater is released. Though various physico-chemical and biological treatment methods are employed for the removal of organic contaminants present in the textile wastewater, these methods lack in achieving effective treatment at lower cost. In this research work, the extract of Moringa oleifera seeds was used as a coagulant to treat raw textile waste water. The efficiency of Moringa oleifera seed extract towards turbidity and COD removal was studied at various pH and coagulant dosage. The results showed a higher efficiency in color, turbidity, and alkalinity and COD removal. Color removal was found to be pH independent. Further, cost analysis revealed that the Moringa oleifera seed extract is comparably better than commercially available color removing resin.

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