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Investigation on cost-effective composites for CO2 adsorption from post-gasification residue and metal organic framework

Nguyen, H.N. and Nguyen, T.P. and Le, P.T. and Tran, Q.M. and Do, T.H. and Nguyen, T.D. and Tran-Nguyen, P.L. and Tsubota, T. and Dinh, T.M.T. (2025) Investigation on cost-effective composites for CO2 adsorption from post-gasification residue and metal organic framework. Journal of Environmental Sciences (China), 148. pp. 174-187.

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Abstract

Cost-effective CO2 adsorbents are gaining increasing attention as viable solutions for mitigating climate change. In this study, composites were synthesized by electrochemically combining the post-gasification residue of Macadamia nut shell with copper benzene-1,3,5-tricarboxylate (CuBTC). Among the different composites synthesized, the ratio of 1:1 between biochar and CuBTC (B 1:1) demonstrated the highest CO2 adsorption capacity. Under controlled laboratory conditions (0°C, 1 bar, without the influence of ambient moisture or CO2 diffusion limitations), B 1:1 achieved a CO2 adsorption capacity of 9.8 mmol/g, while under industrial-like conditions (25°C, 1 bar, taking into account the impact of ambient moisture and CO2 diffusion limitations within a bed of adsorbent), it reached 6.2 mmol/g. These values surpassed those reported for various advanced CO2 adsorbents investigated in previous studies. The superior performance of the B 1:1 composite can be attributed to the optimization of the number of active sites, porosity, and the preservation of the full physical and chemical surface properties of both parent materials. Furthermore, the composite exhibited a notable CO2/N2 selectivity and improved stability under moisture conditions. These favorable characteristics make B 1:1 a promising candidate for industrial applications. © 2023

Item Type: Article
Divisions: Offices > Office of International Cooperation
Identification Number: 10.1016/j.jes.2023.10.022
Uncontrolled Keywords: Adsorption; Climate change; Copper compounds; Cost effectiveness; Gasification; Metal-Organic Frameworks; Moisture, Adsorption capacities; Ambient moisture; Biochar; Biochar-based composite; CO2 adsorption; Cost effective; CuBTC; Metalorganic frameworks (MOFs); Post-gasification residue; Synthesised, Carbon dioxide, adsorption; biochar; carbon dioxide; composite; cost-benefit analysis; electrochemistry; metal; mitigation; performance assessment; physicochemical property; plant residue; porosity
Additional Information: cited By 0
URI: http://eprints.lqdtu.edu.vn/id/eprint/11088

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