Green adsorbents for resource recovery

The development of environmentally friendly approaches for resource recovery technologies is accelerating the progress of bio-based green adsorbents. A wide range of resources can be recovered from liquid and gaseous streams by employing green adsorbents. Waste biomass is a viable raw material for the development of novel environmentally friendly adsorbent materials. In recent times, there has been considerable focus on the exploration of efficient ways to produce adsorbent materials from different biomass. Due to its inherent functional moieties, biomass is an excellent raw material for customizing green adsorbents. To control the physicochemical properties of green adsorbents and enhance their activity, various activation and functionalization strategies have been explored. Despite the challenges linked with biomass feedstock, intense efforts have been devoted to the development of green adsorbents. In this short review, recent studies on the application of green adsorbent for resource recovery from liquid and gaseous streams are discussed.