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231225s2019 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2019.416
|2 doi
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|a eng
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| 100 |
1 |
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|a Miñón-Fuentes, Raciel
|e verfasserin
|4 aut
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| 245 |
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|a Hydrogen production from coffee pulp by dark fermentation
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|c 2019
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a Date Completed 17.02.2020
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|a Date Revised 15.12.2020
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|a published: Print
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|a Citation Status MEDLINE
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|a Coffee pulp (C.P.) is a waste of coffee production that needs to be controlled. Due to its high moisture and sugar content, a diagnostic study that characterizes the pulp was conducted and the potential for hydrogen production was evaluated. Subsequently, the kinetics of hydrogen production in a bioreactor were evaluated. A biodegradability index of 0.91 (DBO5/DQO) was calculated, initial pH of the sample was 4.16 ± 0.05, a concentration of total volatile solids (TVS) of 58.1 ± 0.94 [g/L], and total sugar of 19.6 ± 0.79 [g Dextrose/L]. The yield was at 49.2 [NmL H2/g DQOInitial], the hydrogen production per fresh coffee pulp kilogram was 4.18 [L H2/kg C.P.], the energy density was determined at 0.045 [MJ/kg C.P.]. Modified Gompertz parameters were 585 [NmL] for Hmax, 4.1 [NmL H2/g DQO-h] for Rmax and a lag phase (λ) of 92.70 [h]. Because the yield of hydrogen production of coffee pulp estimated was similar to complex substrates like tequila vinasses, and there was a DQO reduction of 13.58%, based on some substrate restrictions, dark fermentation could be a stage of pretreatment of wastewater with coffee pulp in a biogas process to produce two relevant economic and energy products (hydrogen and biogas)
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|a Journal Article
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|a Biofuels
|2 NLM
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|a Coffee
|2 NLM
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|a Hydrogen
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|a Aguilar-Juárez, Oscar
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 80(2019), 9 vom: 01. Nov., Seite 1692-1701
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|g volume:80
|g year:2019
|g number:9
|g day:01
|g month:11
|g pages:1692-1701
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|u http://dx.doi.org/10.2166/wst.2019.416
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