Activated Carbon from Palm Date Seeds for CO 2 Capture

Amira Alazmi, Sabina A. Nicolae, Pierpaolo Modugno, Bashir E. Hasanov, Maria M. Titirici and Pedro M. F. J. Costa
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Amira Alazmi: Department of Chemistry, University Colleges at Nairiyah, University of Hafr Albatin (UHB), Nairiyah 31981, Saudi Arabia
Sabina A. Nicolae: School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK
Pierpaolo Modugno: School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK
Bashir E. Hasanov: Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
Maria M. Titirici: Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK
Pedro M. F. J. Costa: Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia

IJERPH, 2021, vol. 18, issue 22, 1-11

Abstract: The process of carbon dioxide capture and storage is seen as a critical strategy to mitigate the so-called greenhouse effect and the planetary climate changes associated with it. In this study, we investigated the CO 2 adsorption capacity of various microporous carbon materials originating from palm date seeds (PDS) using green chemistry synthesis. The PDS was used as a precursor for the hydrochar and activated carbon (AC). Typically, by using the hydrothermal carbonization (HTC) process, we obtained a powder that was then subjected to an activation step using KOH, H 3 PO 4 or CO 2 , thereby producing the activated HTC-PDS samples. Beyond their morphological and textural characteristics, we investigated the chemical composition and lattice ordering. Most PDS-derived powders have a high surface area (>1000 m 2 g ?1 ) and large micropore volume (>0.5 cm 3 g ?1 ). However, the defining characteristic for the maximal CO 2 uptake (5.44 mmol g ?1 , by one of the alkaline activated samples) was the lattice restructuring that occurred. This work highlights the need to conduct structural and elemental analysis of carbon powders used as gas adsorbents and activated with chemicals that can produce graphite intercalation compounds.

Keywords: hydrothermal carbonization; activation; adsorption; palm date seeds; CO 2 capture (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jijerp:v:18:y:2021:i:22:p:12142-:d:682828

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