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

Farooq Sher, Sania Zafar Iqbal, Shaima Albazzaz, Usman Ali, Daniela Andresa Mortari, Tazien Rashid

Research output: Contribution to journalArticle

Abstract

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 CO 2 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 CO 2 adsorbents synthesis for future researches because of the hot issue of anthropogenic CO 2 emissions. The adsorption isotherms studied by the thermal gravimetric analyser (TGA) revealed that CO 2 adsorption capabilities are in the range of 2.53–3.92 mmol/g (over N 2 balance) at 25 °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 CO 2 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 CO 2 and biomass waste.

Original languageEnglish
Article number118506
Number of pages118506
JournalFuel
Volume282
Early online date7 Aug 2020
DOIs
Publication statusE-pub ahead of print - 7 Aug 2020

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in Fuel. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Fuel, 282 (2020)] DOI: 10.1016/j.fuel.2020.118506

© 2020, Elsevier. Licensed under the Creative Commons Attribution-NonCommercialNoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

  • Adsorption
  • Biomass waste
  • CO capture
  • Global warming
  • Green activated carbons
  • KOH-activation
  • Microporous materials

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

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