The issue of excess slag waste generated in the iron and steel making industries has prompted investigations on use waste. objective this study is to develop an adsorbent capable capturing carbon dioxide (CO2) by using slag. A mesoporous CaO-Fe2O3-SiO2 (CFS) composite was synthesized from a dephosphorization slag, Pluronic 123 as template various acids, including formic acid (FA), hydrochloric ...