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Tytuł:
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One-pot selective production of levulinic acid and formic acid from spent coffee grounds in a catalyst-free biphasic system.
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Autorzy:
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Kim B; Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
Yang J; Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
Kim M; Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
Lee JW; Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea. Electronic address: .
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Źródło:
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Bioresource technology [Bioresour Technol] 2020 May; Vol. 303, pp. 122898. Date of Electronic Publication: 2020 Jan 28.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Original Publication: Barking, Essex, England : New York, N.Y. : Elsevier Applied Science ; Elsevier Science Pub. Co., 1991-
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MeSH Terms:
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Coffee*
Formates*
Levulinic Acids
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Contributed Indexing:
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Keywords: Biphasic system; Catalyst-free; Levulinic acid; Platform chemical; Spent coffee grounds (SCGs)
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Substance Nomenclature:
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0 (Coffee)
0 (Formates)
0 (Levulinic Acids)
0YIW783RG1 (formic acid)
RYX5QG61EI (levulinic acid)
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Entry Date(s):
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Date Created: 20200208 Date Completed: 20200226 Latest Revision: 20200226
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Update Code:
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20240105
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DOI:
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10.1016/j.biortech.2020.122898
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PMID:
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32032939
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This study introduces the catalyst-free production of levulinic acid (LA) and formic acid (FA) from spent coffee grounds (SCGs) as a starting material in a biphasic system of 1,2-dichloroethane (DCE)-water at temperatures above 160 °C. In addition to the advantage of using the biphasic system attributed to the product equilibrium, DCE served as a source of hydrogen induced by subcritical water (SCW). The effect of temperature, the amount of DIW and DCE, and the pretreatment on SCG (raw or lipid extracted SCG (LE-SCG)) on the overall reaction and humin formation were studied. The maximum conversion of LA and FA was 47 and 29 w/w% of the total convertible monosaccharides in raw SCGs while 43 and 28 w/w% of the conversion were obtained at 180 °C when LE-SCG was used. The solvothermal effects of two media provides a non-catalytic route to utilize undried SCG for the production of LA and FA.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
