Development of biomass derived highly porous fast adsorbents for post-combustion CO2 capture

FUEL

卷:282

Article

Sher, Farooq¹  Iqbal, Sania Zafar²  Albazzaz, Shaima^3,4  Ali, Usman⁵  Mortari, Daniela Andresa⁶  Rashid, Tazien^7,8 

[1] Coventry Univ, Fac Engn Environm & Comp, Sch Mech Aerosp & Automot Engn, Coventry CV1 2JH, W Midlands, England

[2] Univ Agr Faisalabad, Dept Biochem, Faisalabad 38000, Pakistan

[3] Univ Nottingham, Dept Chem & Environm Engn, Univ Pk, Nottingham NG7 2RD, England

[4] Univ Basrah, Coll Engn, Dept Chem Engn, Basrah, Iraq

[5] Univ Engn & Technol, Dept Chem Engn, Lahore 54890, Pakistan

[6] Univ Sao Paulo, Sao Carlos Sch Engn, Sao Carlos, SP, Brazil

[7] NFC Inst Engn & Fertilizer Res Faisalabad, Dept Chem Engn, Faisalabad, Pakistan

[8] Univ Teknol Petronas, Dept Chem Engn, Tronoh 32610, Perak, Malaysia

关键词: CO2 capture;    Biomass waste;    Green activated carbons;    Adsorption;    KOH-activation;    Microporous materials;    Global warming;   

DOI  :  10.1016/j.fuel.2020.118506

来源: Elsevier

【 摘 要 】

This study is carried out for a comparative screening of three groups of biomasses; soft or non-woody (peanut shell); intermediate woody (walnut shell) and hard woody (pine wood) for the development of adsorbents/activated carbons for post-combustion CO2 capture (over N-2 balance). Three different groups of biomass residues are selected to study the role and nature of the material in adsorption and selection of the raw material for CO2 adsorbents synthesis for future researches because of the hot issue of anthropogenic CO2 emissions. The adsorption isotherms studied by the thermal gravimetric analyser (TGA) revealed that CO2 adsorption capabilities are in the range of 2.53-3.92 mmol/g (over N-2 balance) at 25 degrees C. The newly synthesised activated carbons (ACs) exhibited a fast rate of adsorption as 41-94% in the initial 2 min. Porous surface development with catalytic KOH activation is seen clearly through SEM surface morphological analyses and mathematically confirmed from S BET ranges from 146.86 to 944.05 m(2)/g. FTIR and XRD peaks verify the generation of basic or inorganic O-2-rich moieties that help in acidic CO2 capture. It has also been observed from adsorption isotherms that the order of higher adsorption groups is as; peanut shell > pine wood > walnut shell, while the best activation mass ratio (sample/KOH) is 1:3. The synthesised low cost ACs with an amount of 1.93 US$ per kg production could help to overcome the environmental hazards and problems caused by CO2 and biomass waste.

【 授权许可】

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