Innovative Pathways for the Valorization of Biomass Gasification Char: A Systematic Review

Ali Abdelaal, Vittoria Benedetti, Audrey Villot, Francesco Patuzzi (), Claire Gerente and Marco Baratieri
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Ali Abdelaal: Faculty of Engineering, Free University of Bozen-Bolzano, Piazza Domenicani 3, 39100 Bolzano, Italy
Vittoria Benedetti: Faculty of Engineering, Free University of Bozen-Bolzano, Piazza Domenicani 3, 39100 Bolzano, Italy
Audrey Villot: IMT Atlantique, GEPEA, UMR CNRS 6144, 4 Rue Alfred Kastler, F-44000 Nantes, France
Francesco Patuzzi: Faculty of Engineering, Free University of Bozen-Bolzano, Piazza Domenicani 3, 39100 Bolzano, Italy
Claire Gerente: IMT Atlantique, GEPEA, UMR CNRS 6144, 4 Rue Alfred Kastler, F-44000 Nantes, France
Marco Baratieri: Faculty of Engineering, Free University of Bozen-Bolzano, Piazza Domenicani 3, 39100 Bolzano, Italy

Energies, 2023, vol. 16, issue 10, 1-24

Abstract: The thermochemical process of gasification is widely utilized for bioenergy production and is particularly attractive due to its high conversion efficiency. However, a gasification byproduct, known as char, is commonly treated as industrial waste despite its attractive qualities. Indeed, due to its high carbon content (up to 91%) and well-developed porosity (specific surface areas up to 1253 m 2 g −1 ), gasification char could be considered a cost-effective substitute for activated carbon in various applications, such as catalysis and adsorption. However, its properties are highly dependent on the gasification parameters and the initial feedstock selected, and thus a careful characterization of the material is needed to find the most suitable applications. This review can act as a preliminary assessment of the gasification along with the expected char properties, aiding in the selection of the most appropriate valorization pathways. In particular, different application areas, their relation to the gasification process, and the char properties are extensively discussed.

Keywords: adsorption; biomass; catalysis; circular economy; gasification; char; waste management (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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