Non-isothermal decomposition kinetics of lipids recovered from oleaginous microbial biomass (C. vulgaris and L. starkeyi): reaction mechanism and TGA-MS analysis.
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| Title: | Non-isothermal decomposition kinetics of lipids recovered from oleaginous microbial biomass (C. vulgaris and L. starkeyi): reaction mechanism and TGA-MS analysis. |
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| Authors: | Peña, Jenniffer Andrea Tamayo1 (AUTHOR), Pacheco, Lívia Caldas Alencar1 (AUTHOR), Tovar, Laura Plazas2 (AUTHOR), Franco, Telma Teixeira1 (AUTHOR) tfranco@unicamp.br |
| Source: | BioEnergy Research. Mar2022, Vol. 15 Issue 1, p303-319. 17p. |
| Subjects: | Lipids, Biomass, Microbial lipids, Activation energy, Ion temperature, Aliphatic hydrocarbons |
| Abstract: | Oleaginous microorganisms and the thermal decomposition of their recovered lipids are new attractive research fields for the sustainable production of biofuels from actual biomass. In this work, the thermal decomposition of lipids from C. vulgaris and from L. starkeyi was investigated using a thermogravimetric analyzer coupled to a mass spectrometer (TGA-MS) under non-isothermal conditions. Thermal decomposition was examined using the one-step reaction model. Integral, differential, and advanced isoconversional methods were implemented to analyze the conversion-dependent activation energy. The Friedman method resulted in an accurate and reliable estimation of the kinetic parameters. The activation energy showed a strong dependence on conversion from 123.5 to 246 kJ mol-1 for lipids from C. vulgaris and from 80.3 to 299.9 kJ mol-1 for lipids from L. starkeyi. The generalized master plot approach evidenced that the thermal decomposition of lipids from C. vulgaris proceeds via three-dimensional diffusion (D3—Jander's equation). Also, the kinetic analysis indicated that Valensi's equation (D2), controlled by a two-dimensional diffusion model, is the most likely mechanism for the thermal decomposition of lipids from L. starkeyi. The rate parameters were evaluated via a kinetic compensation plot. Ion temperature evolution was investigated by TGA-MS revealing many of the functional groups evolved in the range of 350–500 °C as C1–C7 aliphatic hydrocarbons, aromatic hydrocarbons, aldehydes, carboxylic acids, and furan derivatives. All these aspects favor the lipid biosynthesis from microbial biomass to potential lipid-based building blocks. [ABSTRACT FROM AUTHOR] |
| Copyright of BioEnergy Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 156108244 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Non-isothermal decomposition kinetics of lipids recovered from oleaginous microbial biomass (C. vulgaris and L. starkeyi): reaction mechanism and TGA-MS analysis. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Peña%2C+Jenniffer+Andrea+Tamayo%22">Peña, Jenniffer Andrea Tamayo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pacheco%2C+Lívia+Caldas+Alencar%22">Pacheco, Lívia Caldas Alencar</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tovar%2C+Laura+Plazas%22">Tovar, Laura Plazas</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Franco%2C+Telma+Teixeira%22">Franco, Telma Teixeira</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tfranco@unicamp.br</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22BioEnergy+Research%22">BioEnergy Research</searchLink>. Mar2022, Vol. 15 Issue 1, p303-319. 17p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Lipids%22">Lipids</searchLink><br /><searchLink fieldCode="DE" term="%22Biomass%22">Biomass</searchLink><br /><searchLink fieldCode="DE" term="%22Microbial+lipids%22">Microbial lipids</searchLink><br /><searchLink fieldCode="DE" term="%22Activation+energy%22">Activation energy</searchLink><br /><searchLink fieldCode="DE" term="%22Ion+temperature%22">Ion temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Aliphatic+hydrocarbons%22">Aliphatic hydrocarbons</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Oleaginous microorganisms and the thermal decomposition of their recovered lipids are new attractive research fields for the sustainable production of biofuels from actual biomass. In this work, the thermal decomposition of lipids from C. vulgaris and from L. starkeyi was investigated using a thermogravimetric analyzer coupled to a mass spectrometer (TGA-MS) under non-isothermal conditions. Thermal decomposition was examined using the one-step reaction model. Integral, differential, and advanced isoconversional methods were implemented to analyze the conversion-dependent activation energy. The Friedman method resulted in an accurate and reliable estimation of the kinetic parameters. The activation energy showed a strong dependence on conversion from 123.5 to 246 kJ mol-1 for lipids from C. vulgaris and from 80.3 to 299.9 kJ mol-1 for lipids from L. starkeyi. The generalized master plot approach evidenced that the thermal decomposition of lipids from C. vulgaris proceeds via three-dimensional diffusion (D3—Jander's equation). Also, the kinetic analysis indicated that Valensi's equation (D2), controlled by a two-dimensional diffusion model, is the most likely mechanism for the thermal decomposition of lipids from L. starkeyi. The rate parameters were evaluated via a kinetic compensation plot. Ion temperature evolution was investigated by TGA-MS revealing many of the functional groups evolved in the range of 350–500 °C as C1–C7 aliphatic hydrocarbons, aromatic hydrocarbons, aldehydes, carboxylic acids, and furan derivatives. All these aspects favor the lipid biosynthesis from microbial biomass to potential lipid-based building blocks. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of BioEnergy Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s12155-021-10271-7 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 17 StartPage: 303 Subjects: – SubjectFull: Lipids Type: general – SubjectFull: Biomass Type: general – SubjectFull: Microbial lipids Type: general – SubjectFull: Activation energy Type: general – SubjectFull: Ion temperature Type: general – SubjectFull: Aliphatic hydrocarbons Type: general Titles: – TitleFull: Non-isothermal decomposition kinetics of lipids recovered from oleaginous microbial biomass (C. vulgaris and L. starkeyi): reaction mechanism and TGA-MS analysis. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Peña, Jenniffer Andrea Tamayo – PersonEntity: Name: NameFull: Pacheco, Lívia Caldas Alencar – PersonEntity: Name: NameFull: Tovar, Laura Plazas – PersonEntity: Name: NameFull: Franco, Telma Teixeira IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 19391234 Numbering: – Type: volume Value: 15 – Type: issue Value: 1 Titles: – TitleFull: BioEnergy Research Type: main |
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