A Humins-Derived Magnetic Biochar for Water Purification by Adsorption and Magnetic Separation - Université Côte d'Azur Access content directly
Journal Articles Waste and Biomass Valorization Year : 2021

A Humins-Derived Magnetic Biochar for Water Purification by Adsorption and Magnetic Separation

C. Lomenech
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Alice Mija
P. Kuzhir

Abstract

In this study, the use of magnetic biochar particles recovered from biorefinery by-products (humins) for adsorption of hydrophilic organic pollutants was investigated. The biochar was prepared by thermal treatment of crude humins followed by a grinding step after which a magnetic iron oxide was co-precipitated on the biochar surface. The resulting iron oxide content of the biochar composite was found to be 9 % by volume, and the presence of a characteristic Fe-O vibrational band was observed by FTIR-ATR. XPS analysis of Fe2p spectrum enabled the nature of iron oxide to be identified as maghemite. Finally, magnetometry measurements demonstrated the superparamagnetic properties of maghemite.
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Dates and versions

hal-03280245 , version 1 (07-01-2022)

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C. Lomenech, Ch. Hurel, L. Messina, M. Schembri, P. Tosi, et al.. A Humins-Derived Magnetic Biochar for Water Purification by Adsorption and Magnetic Separation. Waste and Biomass Valorization, 2021, 12 (12), pp.6497-6512. ⟨10.1007/s12649-021-01481-3⟩. ⟨hal-03280245⟩
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