Application of Hydroprocessing, Fermentation, and Anaerobic Digestion in a Carbon-Negative Pyrolysis Refinery

dc.contributor.author Ganguly, Arna
dc.contributor.author Martin, Irene
dc.contributor.author Brown, Robert
dc.contributor.author Wright, Mark
dc.contributor.author Brown, Robert
dc.contributor.department Mechanical Engineering
dc.contributor.department Chemical and Biological Engineering
dc.contributor.department Agricultural and Biosystems Engineering
dc.contributor.department Bioeconomy Institute (BEI)
dc.date 2020-11-06T17:58:43.000
dc.date.accessioned 2021-02-26T03:16:04Z
dc.date.available 2021-02-26T03:16:04Z
dc.date.copyright Wed Jan 01 00:00:00 UTC 2020
dc.date.issued 2020-10-30
dc.description.abstract <p>This study investigates the economic and environmental benefits of integrating hydroprocessing, fermentation, and anaerobic digestion into a pyrolysis refinery. Two scenarios were developed for upgrading and/or utilizing the primary products of pyrolysis (bio-oil, gas, and char). The first (hydroprocessing) scenario hydroprocesses whole bio-oil into gasoline and diesel. The second (fractionation) scenario fractionates bio-oil into sugars for fermentation to cellulosic ethanol and residual phenolic oil as the primary product. Both scenarios use the gaseous product of pyrolysis for process heat in the plant and employ biochar to enhance anaerobic digestion of manure for power generation. The fast pyrolysis plant processes 2000 ton/day of corn stover while the anaerobic digester employs 430 ton/day of manure to generate power. The hydroprocessing scenario produces gasoline at a minimum fuel-selling price (MFSP) of $2.77 per gallons of gasoline while the fractionation scenario produces ethanol and phenolic oils (diesel) as a transportation fuel for $1.2 per gallon ($1.41 per GGE). Sensitivity analysis indicates that the MFSP for both scenarios is highly sensitive to the fixed capital cost. Fixed capital costs for the hydroprocessing and fractionation scenarios were estimated to be $643 and $288 million, respectively. Fuel production rates for the hydroprocessing and fractionation scenarios are 60.5 and 16 million GGE per year, respectively. Life cycle greenhouse gas emissions were calculated as −9.6 and −16.6 g CO2,eq per MJ for the hydroprocessing and fractionation scenarios, respectively. LCA emissions are sensitive to byproduct credits derived from biochar sequestration and power generation. This study shows that both systems produce transportation fuels at competitive market prices with an additional reduction in atmospheric CO2 levels compared to fossil fuel sources.</p>
dc.description.comments <p>This document is the unedited Author’s version of a Submitted Work that was subsequently accepted for publication in <em>ACS Sustainable Chemistry and Engineering</em>, copyright © American Chemical Society after peer review. To access the final edited and published work see DOI: <a href="https://doi.org/10.1021/acssuschemeng.0c03905" target="_blank">10.1021/acssuschemeng.0c03905</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/me_pubs/448/
dc.identifier.articleid 1450
dc.identifier.contextkey 20105999
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath me_pubs/448
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/96685
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/me_pubs/448/2020_BrownRobert_ApplicationHydroprocessing.pdf|||Sat Jan 15 00:19:19 UTC 2022
dc.source.uri 10.1021/acssuschemeng.0c03905
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.disciplines Energy Systems
dc.subject.disciplines Other Economics
dc.subject.disciplines Process Control and Systems
dc.subject.disciplines Sustainability
dc.subject.keywords Fast pyrolysis
dc.subject.keywords hydroprocessing
dc.subject.keywords anaerobic digestion
dc.subject.keywords fermentation
dc.subject.keywords techno-economic analysis
dc.subject.keywords life cycle analysis
dc.title Application of Hydroprocessing, Fermentation, and Anaerobic Digestion in a Carbon-Negative Pyrolysis Refinery
dc.type article
dc.type.genre article
dspace.entity.type Publication
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relation.isOrgUnitOfPublication 6d38ab0f-8cc2-4ad3-90b1-67a60c5a6f59
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relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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