Enhancing and unlocking faster start‐up anaerobic granulation via bioadditives.
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| Title: | Enhancing and unlocking faster start‐up anaerobic granulation via bioadditives. |
|---|---|
| Authors: | Karabey, Burçin1 (AUTHOR) burcin.karabey@kavram.edu.tr, Azbar, Nuri2 (AUTHOR), Özdemir, Güven3 (AUTHOR) |
| Source: | Biofuels, Bioproducts & Biorefining. May2026, Vol. 20 Issue 3, p1576-1586. 11p. |
| Subject Terms: | *Biogas production, Chitosan, Additives, Microbial aggregation, Metal ions, Anaerobic reactors, Microbial diversity |
| Abstract: | The prolonged start‐up period of high‐rate anaerobic anaerobic reactors represents a critical techno‐economic bottleneck, and this study demonstrates that targeted bioadditive conditioning offers an effective strategy to accelerate granulation while simultaneously enhancing methane yields at laboratory and pilot scales in two 2 L lab‐scale upflow anaerobic sludge blanket reactors (R1: multivalent cation addition, R2: chitosan addition) and subsequently, a 20 L pilot‐scale reactor, respectively. Laboratory‐scale experiments demonstrated that chitosan‐based conditioning shortened granulation time by approximately 15 days compared with conventional operation, whereas multivalent cations primarily improved microbial diversity and structural stability. When these strategies were combined and evaluated in a 20 L pilot‐scale reactor, biomass concentration increased by 126% and methane content reached 74.5% within 52 days, indicating accelerated commissioning and earlier energy recovery. The confirmation of this hypothesis is economically relevant, as reduced start‐up periods directly translate into faster cash‐flow generation, lower financial risk during early operation, and improved feasibility of capital‐intensive anaerobic treatment facilities. Beyond process intensification, the results reveal an overlooked interdisciplinary connection between polymer‐assisted microbial aggregation, granule‐scale ecology, and reactor‐scale techno‐economic performance. Metagenomic analysis revealed that chitosan favored the dominance of extracellular polymeric substance‐producing genera such as Methanobacterium and Clostridium, while multivalent ions supported greater microbial diversity. Overall, this work provides a scalable and cost‐effective framework for improving anaerobic digester start‐up performance, offering clear industrial relevance and a basis for future integration with digital twin‐based optimization and investment decision‐support tools. Last but not least, this study highlights the synergistic impact of bioadditives and reactor scale on anaerobic sludge granulation and system performance. [ABSTRACT FROM AUTHOR] |
| Copyright of Biofuels, Bioproducts & Biorefining is the property of Wiley-Blackwell 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: | GreenFILE |
| FullText | Text: Availability: 0 |
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| Header | DbId: 8gh DbLabel: GreenFILE An: 193626319 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Enhancing and unlocking faster start‐up anaerobic granulation via bioadditives. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Karabey%2C+Burçin%22">Karabey, Burçin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> burcin.karabey@kavram.edu.tr</i><br /><searchLink fieldCode="AR" term="%22Azbar%2C+Nuri%22">Azbar, Nuri</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Özdemir%2C+Güven%22">Özdemir, Güven</searchLink><relatesTo>3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Biofuels%2C+Bioproducts+%26+Biorefining%22">Biofuels, Bioproducts & Biorefining</searchLink>. May2026, Vol. 20 Issue 3, p1576-1586. 11p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Biogas+production%22">Biogas production</searchLink><br /><searchLink fieldCode="DE" term="%22Chitosan%22">Chitosan</searchLink><br /><searchLink fieldCode="DE" term="%22Additives%22">Additives</searchLink><br /><searchLink fieldCode="DE" term="%22Microbial+aggregation%22">Microbial aggregation</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+ions%22">Metal ions</searchLink><br /><searchLink fieldCode="DE" term="%22Anaerobic+reactors%22">Anaerobic reactors</searchLink><br /><searchLink fieldCode="DE" term="%22Microbial+diversity%22">Microbial diversity</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The prolonged start‐up period of high‐rate anaerobic anaerobic reactors represents a critical techno‐economic bottleneck, and this study demonstrates that targeted bioadditive conditioning offers an effective strategy to accelerate granulation while simultaneously enhancing methane yields at laboratory and pilot scales in two 2 L lab‐scale upflow anaerobic sludge blanket reactors (R1: multivalent cation addition, R2: chitosan addition) and subsequently, a 20 L pilot‐scale reactor, respectively. Laboratory‐scale experiments demonstrated that chitosan‐based conditioning shortened granulation time by approximately 15 days compared with conventional operation, whereas multivalent cations primarily improved microbial diversity and structural stability. When these strategies were combined and evaluated in a 20 L pilot‐scale reactor, biomass concentration increased by 126% and methane content reached 74.5% within 52 days, indicating accelerated commissioning and earlier energy recovery. The confirmation of this hypothesis is economically relevant, as reduced start‐up periods directly translate into faster cash‐flow generation, lower financial risk during early operation, and improved feasibility of capital‐intensive anaerobic treatment facilities. Beyond process intensification, the results reveal an overlooked interdisciplinary connection between polymer‐assisted microbial aggregation, granule‐scale ecology, and reactor‐scale techno‐economic performance. Metagenomic analysis revealed that chitosan favored the dominance of extracellular polymeric substance‐producing genera such as Methanobacterium and Clostridium, while multivalent ions supported greater microbial diversity. Overall, this work provides a scalable and cost‐effective framework for improving anaerobic digester start‐up performance, offering clear industrial relevance and a basis for future integration with digital twin‐based optimization and investment decision‐support tools. Last but not least, this study highlights the synergistic impact of bioadditives and reactor scale on anaerobic sludge granulation and system performance. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Biofuels, Bioproducts & Biorefining is the property of Wiley-Blackwell 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: 10.1002/bbb.70153 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 1576 Subjects: – SubjectFull: Biogas production Type: general – SubjectFull: Chitosan Type: general – SubjectFull: Additives Type: general – SubjectFull: Microbial aggregation Type: general – SubjectFull: Metal ions Type: general – SubjectFull: Anaerobic reactors Type: general – SubjectFull: Microbial diversity Type: general Titles: – TitleFull: Enhancing and unlocking faster start‐up anaerobic granulation via bioadditives. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Karabey, Burçin – PersonEntity: Name: NameFull: Azbar, Nuri – PersonEntity: Name: NameFull: Özdemir, Güven IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 1932104X Numbering: – Type: volume Value: 20 – Type: issue Value: 3 Titles: – TitleFull: Biofuels, Bioproducts & Biorefining Type: main |
| ResultId | 1 |
