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High added-value products from the hydrothermal carbonisation of olive stones

Abstract : Olive stones (OS) were submitted to hydrothermal carbonisation (HTC) in order to evaluate the possibility of producing high added-value products, mainly furfural (FU) and 5-hydroxymethylfurfural (5-HMF) on one hand, and hydrochars and carbons on the other hand. Temperature (160-240°C), residence time (1-8h), initial pH (1-5.5) and liquid/solid ratio (4-48 w/w) were systematically varied in order to study the main products and to optimise FU production. FU production yield up to 19.9%, based on the hemicellulose content, was obtained. Other minor, but valuable, compounds such as 5-MF and some phenolic compounds were also produced. The hydrochar was carbonised at 900°C and the resultant carbon material was highly ultramicroporous with a peak of pore size distribution centred on 0.5 nm and a surface area as high as 1065 m 2 g-1 , typical of most carbon molecular sieves.
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https://hal.univ-lorraine.fr/hal-03562640
Contributor : Maria Vanessa Fierro Pastor Connect in order to contact the contributor
Submitted on : Wednesday, February 9, 2022 - 10:30:01 AM
Last modification on : Thursday, February 10, 2022 - 3:35:30 AM
Long-term archiving on: : Tuesday, May 10, 2022 - 6:28:50 PM

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A.M. Borrero-López, V. Fierro, A. Jeder, A. Ouederni, E. Masson, et al.. High added-value products from the hydrothermal carbonisation of olive stones. Environmental Science and Pollution Research, Springer Verlag, 2017, 24 (11), pp.9859-9869. ⟨10.1007/s11356-016-7807-6⟩. ⟨hal-03562640⟩

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