Removal of Dyes Using Various Organic Peel-based Materials: A Systematic Review

Abstract

This review recapitulates the recent adsorption study literature regarding the activated biochar and nanocomposites of agricultural peel-based bio-adsorbents for the removal of dyes from wastewater. The use of agricultural peel in decoloration technology is promising for efficiency, cost-effectiveness, and eco-friendliness. Various types of bio-adsorbents have been studied in the literature, such as orange peel, potato peel, banana peel, cucumber peel, Pomelo peel, and rambutan peel, respectively. The equilibrium data and kinetics were analyzed, and they fit known models are also summarized. This review article will help to know the applicability and potential of various peel-based bio-adsorbents in wastewater treatment. The conclusion has been drawn from the literature review, and few suggestions for further future studies are also proposed.