A critical review on current progress and challenges in post-combustion CO2 separation from flue gas

In the last few decades of industrial growth, the amount of carbon dioxide has augmented rapidly in to the environment. CO2 rising level in the environment is enormously contributing to increase in surface temperature of earth. The paramount domineering issue is the worrying speed at which the CO2 amount is increasing in the atmosphere. The available CO2-reducing technologies have the potential to reduce emission cost of carbon dioxide. Numerous recommended techniques can be amended to existing plants based on nonrenewable type fuel source. To date, considerable work has been done for CO2 capturing using a variety of adsorbent either commercially available or synthesized by suitable activation technique. In this review paper, CO2 capture by adsorption using a variety of adsorbents such as carbonaceous, non-carbonaceous and modified adsorbents has been studied. Various methods of physical and chemical activation to produce activated carbon for enhanced CO2 capture from different class of biomass have been investigated. All the information in CO2 capture and related issues have been described, summarized and thoroughly presented in the review article with emphasis on date pits-derived activated carbons. The reported adsorption capacity for various class of adsorbent has been discussed in detail and presented in the review article.