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Molten Salt Carbonization and Activation of Biomass to Functional Biocarbon

Egun, Ishioma L.; He, Haiyong; Hu, Di; Chen, George Z.

Molten Salt Carbonization and Activation of Biomass to Functional Biocarbon Thumbnail


Ishioma L. Egun

Haiyong He

Di Hu


Functional carbon materials are useful for energy storage, catalysis, and pollutant adsorption, and are in high demand, for which biomass has become a valuable raw material. Molten salt carbonization and activation (MSCA) is a promising approach to converting biomass to functional biocarbon and reducing or neutralizing carbon impact on the environment. It uses a single thermal treatment and features high-efficiency conversion, rapid production, and low resource and processing costs. More importantly, in this process, the unmatched purely ionic environment at high temperatures can lead to in situ activation (pore generation) of the biocarbon and introduce desired ions into the carbon to enable unique functionalities. The biocarbon obtained possesses a fairly large specific surface area (SSA), balanced pore structure, and specific surface oxygen-containing groups for diverse applications. This review explains the fundamental and technological aspects of MSCA of biomass, focusing on the approaches, salt compositions (mixtures), processing conditions, and products. The properties of the obtained biocarbon are analyzed and compared in the context of practical applications. Areas for further investigation are also explored with the hope of this molten salt route becoming optimized and industrialized for a circular economy.

Journal Article Type Article
Acceptance Date Aug 10, 2022
Online Publication Date Sep 8, 2022
Publication Date Sep 8, 2022
Deposit Date Sep 14, 2022
Publicly Available Date Sep 14, 2022
Journal Advanced Sustainable Systems
Print ISSN 2366-7486
Electronic ISSN 2366-7486
Publisher Wiley
Peer Reviewed Peer Reviewed
Article Number 2200294
Keywords General Environmental Science; Renewable Energy, Sustainability and the Environment
Public URL
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