Open AccessCoal Bottom Ash as a Potential Adsorbent for CO2 Capture
Author(s) -
Noor Hidayu Abdul Rani,
Nor Fadilah Mohamad,
Munirah Onn,
Mohd Jumain Jalil,
Nur Suriawanie Muda
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1176/1/012001
Subject(s) - adsorption , coal , flue gas , desorption , raw material , chemical engineering , materials science , flue gas desulfurization , waste management , vacuum swing adsorption , scanning electron microscope , carbon fibers , chemistry , pressure swing adsorption , organic chemistry , composite material , composite number , engineering
Coal bottom ash (CBA) is the solid residue produced from coal-fired power plant. It is classified as hazardous material, which can cause adverse effect to the environment and public health. In view of the situation, exploring and discovering possible utilization of these coal residues into value-added products has to be performed. Hence, the aim of this paper is to investigate the potential of raw CBA as an adsorbent for carbon dioxide (CO 2 ) gas adsorption. The physicochemical characteristics of CBA were determined using ultimate and proximate analysis, nitrogen adsorption-desorption isotherm, scanning electron microscopy (SEM), and elemental diffraction x-ray (EDX) analysis. CO 2 adsorption study was conducted using simulated flue gas by pressure swing adsorption process in a fixed-bed reactor to evaluate the suitability of CBA as an adsorbent material. High carbon content in CBA makes it’s become a good precursor for production of carbonaceous adsorbent. Trace elements like calcium, silica and alumina, indicating that the material had a good adsorption capacity. The result indicated that CBA was able to adsorb CO 2 with the adsorption capacity of 0.000276 mol CO 2 /g CBA. As a conclusion, CBA has the potential to be an adsorbent for its application in gas phase especially in CO 2 adsorption.