Life cycle assessment of wheat straw pyrolysis with volatile fractions chemical looping combustion

Simple item page
dc.contributor.authorMendiara, Teresa
dc.contributor.authorNavajas León, Alberto
dc.contributor.authorAbad, Alberto
dc.contributor.authorPröll, Tobias
dc.contributor.authorMunárriz Tabuenca, Mikel
dc.contributor.authorGandía Pascual, Luis
dc.contributor.authorGarcía-Labiano, Francisco
dc.contributor.authorDiego, Luis F. de
dc.contributor.departmentCienciases_ES
dc.contributor.departmentZientziakeu
dc.contributor.departmentInstitute for Advanced Materials and Mathematics - INAMAT2en
dc.date.accessioned2024-09-30T06:45:03Z
dc.date.available2024-09-30T06:45:03Z
dc.date.issued2024
dc.date.updated2024-09-30T06:38:04Z
dc.description.abstractAmong the approaches to facilitating negative CO2 emissions is biochar production. Biochar is generated in the pyrolysis of certain biomasses. In the pyrolysis process, carbon in the biomass is turned into a solid, porous, carbon-rich, and stable material that can be captured from the soil after a period of from a few decades to several centuries. In addition to this long-term carbon sequestration role, biochar is also beneficial for soil performance as it helps to restore soil fertility and improves the retention and diffusion of water and nutrients. This work presents a Life Cycle Assessment of different pyrolysis approaches for biochar production. Biomass pyrolysis is performed in a fixed-bed reactor, which operates at a mild temperature (550 °C). Biochar is obtained as solid product of the pyrolysis, but there are also liquid (bio-oil) and gaseous products (syngas). The pyrolysis gas is partly used to fulfil the energy demand of the pyrolysis process, which is highly endothermic. In the conventional approach, CO2 is produced during the combustion of syngas and emitted to the atmosphere. Another approach to facilitate CO2 capture and thus obtain more negative CO2 emissions in the pyrolysis process is burning syngas and bio-oil in a Chemical Looping Combustion unit. Life Cycle Assessment was performed of these approaches toward biomass pyrolysis to evaluate their environmental impact. The Chemical Looping Combustion approach significantly reduced the values of 7 of the 16 environmental impact indicators studied, along with the Global Warming Potential among them, it slightly increased the value of one indicator related to the use of fossil resources, and it maintained the values of the remaining 8 indicators. Environmental impact reduction occurs due to the avoidance of CO2 and NOx emissions with Chemical Looping Combustion. The CO2 balances of the different pyrolysis approaches with Chemical Looping Combustion configurations were compared with a base case, which constituted the direct combustion of wheat straw to obtain thermal energy. Direct biomass combustion for the production of 17.1 MJ of thermal energy had CO2 positive emissions of 0.165 kg. If the gaseous fraction was burned by Chemical Looping Combustion, CO2 was captured and the emissions became increasingly negative, until a value of -3.30 kg/17.1 MJ was generated. If bio-oil was also burned by this technology, the negative trend of CO2 emissions continued, until they reached a value of -3.66 kg.en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMendiara, T., Navajas, A., Abad, A., Pröll, T., Munárriz, M., Gandía, L. M., García-Labiano, F., De Diego, L. F. (2024) Life cycle assessment of wheat straw pyrolysis with volatile fractions chemical looping combustion. Sustainability, 16(10), 1-14. https://doi.org/10.3390/su16104013
dc.identifier.doi10.3390/su16104013
dc.identifier.issn2071-1050
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/51859
dc.language.isoeng
dc.publisherMDPI
dc.relation.ispartofSustainability 2024, 16(10), 1-14
dc.relation.publisherversionhttps://doi.org/10.3390/su16104013
dc.rights© 2024 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectBiomass pyrolysisen
dc.subjectCarbon footprinten
dc.subjectChemical looping combustionen
dc.subjectEnvironmental impactsen
dc.subjectLife cycle assessmenten
dc.titleLife cycle assessment of wheat straw pyrolysis with volatile fractions chemical looping combustionen
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
relation.isAuthorOfPublication7691e7a6-7e80-4551-bc29-38bf143b94a0
relation.isAuthorOfPublicationd2bd5a4b-ea1f-488b-afea-05b77f69d3f0
relation.isAuthorOfPublication.latestForDiscovery7691e7a6-7e80-4551-bc29-38bf143b94a0

Files

Original bundle
Now showing 1 - 2 of 2
Thumbnail Image
Name:
Mendiara_LifeCycle.pdf
Size:
1.99 MB
Format:
Adobe Portable Document Format
Download
No Thumbnail Available
Name:
sustainability-16-04013-s001.zip
Size:
135.21 KB
Format:
ZIP
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed to upon submission
Description:
Download

Collections

Artículos de revista DCIE - ZIES Aldizkari artikuluak
Artículos de revista - Aldizkari artikuluak
Artículos de revista INAMAT2 - INAMAT2 aldizkari artikuluak