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Assessment of Coproduction of Ethanol and Methane from Pennisetum purpureum: Effects of Pretreatment, Process Performance, and Mass Balance

[Image: see text] To overcome the structural complexity and improve the bioconversion efficiency of Pennisetum purpureum into bioethanol or/and biomethane, the effects of ensiling pretreatment, NaOH pretreatment, and their combination on digestion performance and mass flow were comparatively investi...

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Autores principales: Wu, Peiwen, Kang, Xihui, Wang, Wen, Yang, Gaixiu, He, Linsong, Fan, Yafeng, Cheng, Xingyu, Sun, Yongming, Li, Lianhua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8815079/
https://www.ncbi.nlm.nih.gov/pubmed/35141053
http://dx.doi.org/10.1021/acssuschemeng.1c02010
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author Wu, Peiwen
Kang, Xihui
Wang, Wen
Yang, Gaixiu
He, Linsong
Fan, Yafeng
Cheng, Xingyu
Sun, Yongming
Li, Lianhua
author_facet Wu, Peiwen
Kang, Xihui
Wang, Wen
Yang, Gaixiu
He, Linsong
Fan, Yafeng
Cheng, Xingyu
Sun, Yongming
Li, Lianhua
author_sort Wu, Peiwen
collection PubMed
description [Image: see text] To overcome the structural complexity and improve the bioconversion efficiency of Pennisetum purpureum into bioethanol or/and biomethane, the effects of ensiling pretreatment, NaOH pretreatment, and their combination on digestion performance and mass flow were comparatively investigated. The coproduction of bioethanol and biomethane showed that 65.2 g of ethanol and 102.6 g of methane could be obtained from 1 kg of untreated Pennisetum purpureum, and pretreatment had significant impacts on the production; however, there is no significant difference between the results of NaOH pretreatment and ensiling-NaOH pretreatment in terms of production improvement. Among them, 1 kg of ensiling-NaOH treated Pennisetum purpureum could yield 269.4 g of ethanol and 144.5 g of methane, with a respective increase of 313.2% and 40.8% compared to that from the untreated sample; this corresponded to the final energy production of 14.5 MJ, with the energy conversion efficiency of 46.8%. In addition, for the ensiling-NaOH treated Pennisetum purpureum, the energy recovery from coproduction (process III) was 98.9% higher than that from enzymatic hydrolysis and fermentation only (process I) and 53.6% higher than that from anaerobic digestion only (process II). This indicated that coproduction of bioethanol and biomethane from Pennisetum purpureum after ensiling and NaOH pretreatment is an effective method to improve its conversion efficiency and energy output.
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spelling pubmed-88150792022-02-07 Assessment of Coproduction of Ethanol and Methane from Pennisetum purpureum: Effects of Pretreatment, Process Performance, and Mass Balance Wu, Peiwen Kang, Xihui Wang, Wen Yang, Gaixiu He, Linsong Fan, Yafeng Cheng, Xingyu Sun, Yongming Li, Lianhua ACS Sustain Chem Eng [Image: see text] To overcome the structural complexity and improve the bioconversion efficiency of Pennisetum purpureum into bioethanol or/and biomethane, the effects of ensiling pretreatment, NaOH pretreatment, and their combination on digestion performance and mass flow were comparatively investigated. The coproduction of bioethanol and biomethane showed that 65.2 g of ethanol and 102.6 g of methane could be obtained from 1 kg of untreated Pennisetum purpureum, and pretreatment had significant impacts on the production; however, there is no significant difference between the results of NaOH pretreatment and ensiling-NaOH pretreatment in terms of production improvement. Among them, 1 kg of ensiling-NaOH treated Pennisetum purpureum could yield 269.4 g of ethanol and 144.5 g of methane, with a respective increase of 313.2% and 40.8% compared to that from the untreated sample; this corresponded to the final energy production of 14.5 MJ, with the energy conversion efficiency of 46.8%. In addition, for the ensiling-NaOH treated Pennisetum purpureum, the energy recovery from coproduction (process III) was 98.9% higher than that from enzymatic hydrolysis and fermentation only (process I) and 53.6% higher than that from anaerobic digestion only (process II). This indicated that coproduction of bioethanol and biomethane from Pennisetum purpureum after ensiling and NaOH pretreatment is an effective method to improve its conversion efficiency and energy output. American Chemical Society 2021-08-05 2021-08-16 /pmc/articles/PMC8815079/ /pubmed/35141053 http://dx.doi.org/10.1021/acssuschemeng.1c02010 Text en © 2021 American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Wu, Peiwen
Kang, Xihui
Wang, Wen
Yang, Gaixiu
He, Linsong
Fan, Yafeng
Cheng, Xingyu
Sun, Yongming
Li, Lianhua
Assessment of Coproduction of Ethanol and Methane from Pennisetum purpureum: Effects of Pretreatment, Process Performance, and Mass Balance
title Assessment of Coproduction of Ethanol and Methane from Pennisetum purpureum: Effects of Pretreatment, Process Performance, and Mass Balance
title_full Assessment of Coproduction of Ethanol and Methane from Pennisetum purpureum: Effects of Pretreatment, Process Performance, and Mass Balance
title_fullStr Assessment of Coproduction of Ethanol and Methane from Pennisetum purpureum: Effects of Pretreatment, Process Performance, and Mass Balance
title_full_unstemmed Assessment of Coproduction of Ethanol and Methane from Pennisetum purpureum: Effects of Pretreatment, Process Performance, and Mass Balance
title_short Assessment of Coproduction of Ethanol and Methane from Pennisetum purpureum: Effects of Pretreatment, Process Performance, and Mass Balance
title_sort assessment of coproduction of ethanol and methane from pennisetum purpureum: effects of pretreatment, process performance, and mass balance
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8815079/
https://www.ncbi.nlm.nih.gov/pubmed/35141053
http://dx.doi.org/10.1021/acssuschemeng.1c02010
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