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Synthesis, characterization and evaluation of porous carbon adsorbents derived from waste biomass for CO2 capture KCI 등재
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/428135
In this work, subabul wood biomass was used to prepare carbon adsorbents by physical and chemical activation methods at various carbonization temperatures. The properties of the carbon adsorbents were estimated through characterization techniques such as X-ray diffraction, Fourier transform infrared spectroscopy, X–ray photo electron spectroscopy, laser Raman spectroscopy, scanning electron microscopy, CHNS-elemental analysis and N2 adsorption studies. Subabul-derived carbon adsorbents were used for CO2 capture in the temperature range of 25–70 °C. A detailed adsorption kinetic study was also carried out. The characterization results indicated that these carbons contain high surface area with microporosity. Surface properties were depended on treatment method and carbonization temperature. Among the carbons, the carbon prepared after treatment of H3PO4 and carbonization at 800 °C exhibited high adsorption capacity of 4.52 m.mol/g at 25 °C. The reason for high adsorption capacity of the adsorbents was explained based on their physicochemical characteristics. The adsorbents showed easy desorption and recyclability up to ten cycle with consistent activity.
Abstract
1 Introduction
2 Experimental
2.1 Preparation of carbon materials from subabul wood
2.2 Characterization
2.3 Carbon dioxide adsorption measurements
2.4 CO2 adsorption kinetics
3 Results and discussion
3.1 Characterization of carbon adsorbents
3.2 CO2 adsorption capacity over SB and SBPA activated carbons
3.3 Adsorption kinetics
3.4 Comparison with other carbon adsorbents
3.5 Recyclability of SBPA-800 activated carbon adsorbent
4 Conclusions
Acknowledgements
References
