Co-electron donors driven medium-chain fatty acids production: Roles of electron donors, reaction kinetics and metabolic pathways.
- Publisher:
- Elsevier
- Publication Type:
- Journal Article
- Citation:
- Chemosphere, 2023, 338, pp. 139515
- Issue Date:
- 2023-10
Closed Access
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Coelectron donors driven medium-chain fatty acids production.pdf | Published version | 6.06 MB | Adobe PDF |
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Full metadata record
Field | Value | Language |
---|---|---|
dc.contributor.author | Wu, S-L | |
dc.contributor.author | Long, Y | |
dc.contributor.author |
Wei, W https://orcid.org/0000-0001-5613-337X |
|
dc.contributor.author |
Shi, X https://orcid.org/0000-0001-8403-3392 |
|
dc.contributor.author | Shen, D | |
dc.contributor.author | Ni, B-J | |
dc.date.accessioned | 2024-04-11T07:33:59Z | |
dc.date.available | 2023-07-14 | |
dc.date.available | 2024-04-11T07:33:59Z | |
dc.date.issued | 2023-10 | |
dc.identifier.citation | Chemosphere, 2023, 338, pp. 139515 | |
dc.identifier.issn | 0045-6535 | |
dc.identifier.issn | 1879-1298 | |
dc.identifier.uri | http://hdl.handle.net/10453/177763 | |
dc.description.abstract | Energy conversion of waste activated sludge alkaline fermentation liquor (WASAFL) to medium-chain fatty acids (MCFAs) is promising for sludge treatment and carbon recovery. However, the single electron donor (ED) fermentation for MCFAs production has irreparable defects. To resolve the respective shortcomings of single electron donor (ED) and improve the MCFAs production efficiency from WASAFL, a novel biotechnical process utilizing ethanol and lactate as co-EDs within different combination ratios were investigated. The results verified that MCFAs production was highest with ethanol to lactate ratio of 1:3 (6988.54 ± 208.18 mg COD/L), being 1.46 and 1.87 times of that with ethanol and lactate as single ED. The kinetic analysis results confirmed that ethanol to lactate ratio of 1:3 resulted in the highest MCFAs yield and formation rate. The microbial taxa results uncovered that the relative abundance of Sphaerochaeta and Haloimpatiens showed positive correlation with MCFAs production. The metabolic pathway analysis indicated that the ethanol oxidization, lactate oxidization, acrylate pathway, reverse β oxidization and fatty acid biosynthesis pathway might take place in the WASAFL fermentation system, contributing to the WASAFL-to-MCFAs conversion. | |
dc.format | Print-Electronic | |
dc.language | eng | |
dc.publisher | Elsevier | |
dc.relation | http://purl.org/au-research/grants/arc/DP220101139 | |
dc.relation | http://purl.org/au-research/grants/arc/DE220100530 | |
dc.relation.ispartof | Chemosphere | |
dc.relation.isbasedon | 10.1016/j.chemosphere.2023.139515 | |
dc.rights | info:eu-repo/semantics/closedAccess | |
dc.subject.classification | Environmental Sciences | |
dc.subject.classification | Meteorology & Atmospheric Sciences | |
dc.subject.mesh | Kinetics | |
dc.subject.mesh | Sewage | |
dc.subject.mesh | Electrons | |
dc.subject.mesh | Fatty Acids | |
dc.subject.mesh | Fermentation | |
dc.subject.mesh | Ethanol | |
dc.subject.mesh | Lactic Acid | |
dc.subject.mesh | Metabolic Networks and Pathways | |
dc.subject.mesh | Fatty Acids, Volatile | |
dc.subject.mesh | Ethanol | |
dc.subject.mesh | Lactic Acid | |
dc.subject.mesh | Fatty Acids | |
dc.subject.mesh | Fatty Acids, Volatile | |
dc.subject.mesh | Sewage | |
dc.subject.mesh | Fermentation | |
dc.subject.mesh | Kinetics | |
dc.subject.mesh | Electrons | |
dc.subject.mesh | Metabolic Networks and Pathways | |
dc.subject.mesh | Kinetics | |
dc.subject.mesh | Sewage | |
dc.subject.mesh | Electrons | |
dc.subject.mesh | Fatty Acids | |
dc.subject.mesh | Fermentation | |
dc.subject.mesh | Ethanol | |
dc.subject.mesh | Lactic Acid | |
dc.subject.mesh | Metabolic Networks and Pathways | |
dc.subject.mesh | Fatty Acids, Volatile | |
dc.title | Co-electron donors driven medium-chain fatty acids production: Roles of electron donors, reaction kinetics and metabolic pathways. | |
dc.type | Journal Article | |
utslib.citation.volume | 338 | |
utslib.location.activity | England | |
pubs.organisational-group | University of Technology Sydney | |
pubs.organisational-group | University of Technology Sydney/Faculty of Engineering and Information Technology | |
pubs.organisational-group | University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering | |
pubs.organisational-group | University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment | |
utslib.copyright.status | closed_access | * |
dc.date.updated | 2024-04-11T07:33:57Z | |
pubs.publication-status | Published | |
pubs.volume | 338 |
Abstract:
Energy conversion of waste activated sludge alkaline fermentation liquor (WASAFL) to medium-chain fatty acids (MCFAs) is promising for sludge treatment and carbon recovery. However, the single electron donor (ED) fermentation for MCFAs production has irreparable defects. To resolve the respective shortcomings of single electron donor (ED) and improve the MCFAs production efficiency from WASAFL, a novel biotechnical process utilizing ethanol and lactate as co-EDs within different combination ratios were investigated. The results verified that MCFAs production was highest with ethanol to lactate ratio of 1:3 (6988.54 ± 208.18 mg COD/L), being 1.46 and 1.87 times of that with ethanol and lactate as single ED. The kinetic analysis results confirmed that ethanol to lactate ratio of 1:3 resulted in the highest MCFAs yield and formation rate. The microbial taxa results uncovered that the relative abundance of Sphaerochaeta and Haloimpatiens showed positive correlation with MCFAs production. The metabolic pathway analysis indicated that the ethanol oxidization, lactate oxidization, acrylate pathway, reverse β oxidization and fatty acid biosynthesis pathway might take place in the WASAFL fermentation system, contributing to the WASAFL-to-MCFAs conversion.
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