Textile Wastewater Treatment Using Crab and Shrimp Chitosan

International Journal of Research and Scientific Innovation (IJRSI) | Volume V, Issue V, May 2018 | ISSN 2321–2705

Textile Wastewater Treatment Using Crab and Shrimp Chitosan

Aswathi Mithran^#, Safalya P R^*

^#Assistant Professor, Dept. of Civil Engineering,^*Student M TECH (Environmental Engineering), M DIT, Ulliyeri, India

Abstract-Discharging of textile effluent in to the nearby water bodies becomes a significant threat to environment mostly to the aquatic life. Textile effluent has so many offensive properties like strong odor, strong colour, Turbidity, alkalinity, Toxicity etc. The increase in the content of these objectionable properties results in to adversative effects which influences the marine organisms. Adsorption is simple and rapid technique. This is most often used pretreatment technique to treat the effluent. However, in this project work, the main concern is the preparation of chitin and chitosan from the raw materials of shrimp and crab shells. Then the prepared material has to be characterized by different characterization methods.

Keywords: Textile wastewater, batch adsorption, Column adsorption. COD, Turbidity, Colour.

I. INTRODUCTION

The textile industry is confronted with serious environmental problems associated with its immense wastewater discharge, Substantial pollution load, extremely high salinity, heavily coloured effluent. Particular sources of recalcitrance and toxicity in dye-house effluent are two frequently used textile auxiliaries; i.e. dye carriers and biological finishing agents. Disposal of dyeing industry wastewater pose one of the major problems, because such effluents contain a number of contaminants including acid or base, dissolved solids toxic compounds and colour . Out of these, colour is the first contaminant to be recognized because it is visible to the human eye. Removal of many dyes by conventional waste treatment methods is difficult since these are stable to light and oxidizing agents and are resistant to aerobic digestion.

Adsorption is an efficient and economically feasible process for separation and purification. It plays an important role in a number of natural and industrial systems. The performance of any adsorption-based process greatly depends on the effectiveness of its design and operating conditions. There are a number of configurations dedicated to undertaking adsorption separation and purification process such as batch, fixed-bed and fluidized bed. In a batch operation, the adsorbent and adsorbate are in contact for a period of time until equilibrium is reached. In a column operation, adsorbate continuously enters and leaves the column; therefore equilibrium is never achieved at any stage.

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