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.
|Original language||English (US)|
|Journal||International Journal of Environmental Research and Public Health|
|State||Published - Nov 19 2021|
Bibliographical noteKAUST Repository Item: Exported on 2021-11-22
Acknowledged KAUST grant number(s): (BAS/1/1346-01-01
Acknowledgements: The authors extend their appreciation to the Deanship of Scientific Research, University of Hafr Al Batin for funding this work through the research project no. 4507. The KAUST is thanked for its continuous financial support (BAS/1/1346-01-01).
ASJC Scopus subject areas
- Public Health, Environmental and Occupational Health
- Health, Toxicology and Mutagenesis