Removal of Industrial Dye Effluent (Drimarene Yellow) by Renewable Natural Resources

Abstract

Dyes and pigments represent one of the problematic groups emitted into wastewaters from various industrial branches, mainly from the dye manufacturing and textile finishing which have complex aromatic structures and provide them physico-chemical, thermal and optical stability. Present investigation deals with the utilization of natural biosorbents i.e., jute stick, chitin, chitosan for the removal of toxic reactive dye providing many beneficial aspects including low cost, biodegradability, nontoxicity, and biocompatibility. Diamerene yellow is a reactive dye which lowered the pH of the solution from 7 to 3.17. Among the jute stick, chitin and chitosan; chitosan showed better results for the removal of diamerene yellow and the removal potential was decreased with incubation time. The amount of dye removed by adsorbent was increased with the increase of adsorbent dose and initial dye concentration. Chitosan and chitin showed better results at 30 °C whereas jute sticks at 40 °C. For the irradiated chitin, dye uptake was reduced with the higher dose of gamma radiation. So, the utilization of this biosorbent can reduce the use of chemicals which is a potential burden for the aquatic biodiversity.