Carbonization of hydrothermally modified spent coffee grounds and tea leaves and the ethene adsorption properties of the resulting carbons
Year: 2025
Type: article
Abstract: Hydrothermal treatment and carbonization of various residues from the extraction of beverages, namely coffee grounds and tea leaves, were performed to investigate the morphological properties and the potential for ethene adsorption of the resulting carbons. Hydrothermal treatment promoted the pore development of the carbons. Removal of crystalline fatty acid produced by hydrothermal treatment with ethanol washing before carbonization significantly increased the BET specific surface area, especially in coffee grounds. The carbonization process contributed to the development of ultra-micropores due to the pyrolysis of the cellulose components in as-received residues. Such narrower pores in the carbons functioned effectively for ethene adsorption.
Source: Carbon Reports
Authors: Naoya Miyajima, Daisuke Yamaguchi, Rina Hiraoka, Chiharu Yamamoto, Kento Narushima, Kazusada Suzaki, Hideto Sakane
Institutions: University of Yamanashi, DC Co., Ltd. (Japan)
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4410198759