Activated Carbon from Palm Date Seeds for CO2 Capture

International Journal of Environmental Research and Public Health

Maria M. Titirici¹  Amira Alazmi²  Pedro M. F. J. Costa³  Bashir E. Hasanov³  Pierpaolo Modugno⁴  Sabina A. Nicolae⁴ 

[1] Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK;Department of Chemistry, University Colleges at Nairiyah, University of Hafr Albatin (UHB), Nairiyah 31981, Saudi Arabia;Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia;School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK;

关键词: hydrothermal carbonization;    activation;    adsorption;    palm date seeds;    CO₂ capture;   

DOI  :  10.3390/ijerph182212142

来源: DOAJ

【 摘 要 】

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 CO₂ 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, H₃PO₄ or CO₂, 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 m² g⁻¹) and large micropore volume (>0.5 cm³ g⁻¹). However, the defining characteristic for the maximal CO₂ 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.

【 授权许可】

Unknown