Chitosan-based hybrid composites for emerging organic micropollutants removal from wastewater: Recent advancement, mechanism, up-scaling, and challenges

초록

The unprecedented rise in emerging organic micropollutants (EOMPs) due to the globalization and industrialization has inescapably risen to their maximum known concentrations in the aquatic ecosystem, till date. Chitosan has emerged as one of the abundant and promising biopolymer for evolving as eco-friendly adsorbents for EOMPs removal from wastewater. The present review paper initially includes different sources, preparation, properties and various modification techniques of chitosan-based hybrid composites for EOMPs removal. The removal efficiencies of various modified chitosan-based composites were discussed and compared for EOMPs removal including pharmaceutical compounds, personal care products, insecticides, pesticides, illicit drugs, microplastics, PFAS, etc. The mechanism of adsorption including hydrophobic interactions, hydrogen bonding, hydrophilic interactions, and it-it stacking along with physicochemical properties affecting the treatment performance were elaborated in detail. Further, the industrial scaling-up and limitations were covered. Overall, the present review describes the potential strategies for designing the next-generation chitosan-based hybrid composites for EOMPs removal from wastewater, overcoming the limitations for future progress is also proposed.

키워드