Synthesis of a CaO-Fe2O3-SiO2 composite from a dephosphorization slag for adsorption of CO2

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 (HCl), nitric (HNO3). morphological physicochemical features prepared samples were determined scanning electron microscopy (SEM), transmission (TEM), (STEM), X-ray diffraction (XRD), photoelectron spectroscopy (XPS), N2 adsorption-desorption measurements. capability capture CO2 investigated repeated adsorption cycles. In comparison other samples, slag-derived (deP-CSF(FA)) exhibited highest capacity (17.0 wt% per mass adsorbent) better regenerative ability. CaO-based that environmentally friendly economical, well having high for reuse, advantageous reducing emissions industry will undoubtedly contribute industry's long-term sustainability.