Development of adsorbents for CO2 capture from waste materials: a review



In recent years, a number of scientific papers have been published on the use of residues from industrial and agricultural operations to develop adsorbents for CO2 capture at low, medium, and high temperatures. This is mainly because these waste materials are low-cost and abundant, and may contribute to a reduction of the total costs in carbon capture technologies. In addition, environmental concerns may also be addressed by developing strategies that can use these waste materials instead of burning or sending them to landfills. This review analyses the recent progress made in the development of CO2 adsorbents made from waste precursors. The different preparation approaches developed for the synthesis of adsorbents, including type of raw waste-material, experimental methods, and further modifications, are reviewed. © 2012 Society of Chemical Industry and John Wiley & Sons, Ltd