Urea-doped corn cob biochar for CO2 capture

Global climate change, driven by increased greenhouse gas emissions, is a significant challenge. Countries collaborate to reduce carbon dioxide emissions through agreements. Carbon capture and storage (CCS) technologies are promising for addressing this issue [1]. Biochar, derived from biomass through thermochemical processes, is a carbon-rich substance with significant surface area and useful surface functional groups. Its physical and chemical traits depend on pyrolysis parameters and additional treatments. Due to its resistance to decomposition, biochar offers a strategic means for long-term CO2 capture and storage. Among different modification techniques, N-doped biochar stands out as a promising adsorbent for CO2 capture, as evidenced by studies utilizing diverse biomass sources [2], [3], [4]. This study aims to enhance the properties of biochar for CO2 capture using a one-step urea soaking technique and subsequent pyrolysis at temperatures ranging from 400°C to 600°C. The CO2 adsorption capabilities of urea-doped biochar derived from maize residues will are investigated and compared under different urea concentrations and soaking times.