Response surface methodology and experimental investigation for the removal of selective cationic dyes and lead from synthetic wastewater using low cost biomass adsorbents

Abstract

In the past few decades adsorbents have been used in removal applications such as dyes heavy metals and other organic and inorganic pollutants Recently waste plant material adsorbents have gained much attention due to their higher removal efficiency than other adsorbents Adsorption was a fast inexpensive and widely applicable method for the removal of pollutants due to its simplicity economic viability and technical feasibility Commercial activated carbons are excellent and versatile adsorbents because of elevated porosity and large inter particulate surface area The objective of this study was to develop inexpensive and effective adsorbents from the biomass which was abundant in nature and economically feasible for the remediation of organic and inorganic contaminants from water The carbon based nanocomposite materials were generally investigated for their suitability for the removal of pollutants to make clean environment The main focus area of the thesis was to develop high performing adsorbent for the removal of heavy metals and different dyes from a simple chemical activation method with low cost adsorbents In the present investigation adsorbents and their adsorption behavior was studied along with other characterizations for removal efficiency The findings of the investigation were elaborately discussed in the thesis which was divided into five chapters newlineThe first chapter deals with the background of the broad area of investigation A brief literature survey on activated carbon with removal of pollutants has been done and the scope of the investigation has been derived from the literature newline newline