Performance of functionlised borassus flabellifer carbon and boiler bottom slag carbon for sequestration of reactive azo dyes from aqueous solutions

Abstract

The key idea of this work demonstrates the treatment of dye effluents by utilising locally available agricultural waste and an industrial waste as an eco-friendly adsorbents. Among the choice of wastes, Borassus flabellifer shell an agricultural wastes and Boiler Bottom Slag Carbon an industrial waste were noticeably high in carbon content. Natural and synthetic types of dyes were the wide categories of dyes, among which the synthetic dyes were extensively utilised in textile, paper, food, pharmaceutical, photographic, plastic industries, cosmetics industries etc., Synthetic dyes, a class of dyes, highly water soluble and possess applications in various fields. Textile industry and its economic growth have given a huge demand in the commercial production of the synthetic dyes. Considerably, azo dyes, a class of synthetic dyes with at least one single azo bond present in it. Beyond its usage, the degradation of such complex structured azo dyes was highly challengeable. The untreated effluent carry such complex azo dyes discharge into water streams and contaminate the whole aquatic ecosystem. The effects of such effluent discharges into water bodies target the restriction of photosynthetic process to those living organisms in them. Hence, the treatment of such azo dyes from industrial effluents was considered to be imperative. Adsorption technique was considered to be one of the effective separation processes in terms of simple operation, cost-effective processing, and nil pretreatment required. Hence using this adsorption technique, the treatment of Reactive yellow 84 (RY84) and Reactive red 195A (RR195A) dyes from aqueous solutions were subjected for evaluation. These anionic classes of dyes were the most preferred textile dyes for their reliable performance in colouration process in the on-going textile industries and their removal process was hence necessitated in this study. newline