Exploring nanobubble technology for enhanced anaerobic digestion of thermal-hydrolysis pre-treated sewage sludge

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dc.contributor.authorLyu, Tao
dc.contributor.authorWu, Fei
dc.contributor.authorNasar, Nasreen
dc.contributor.authorLi, Xin
dc.contributor.authorJarvis, Peter
dc.contributor.authorBajón Fernández, Yadira
dc.date.accessioned2024-10-23T13:59:51Z
dc.date.available2024-10-23T13:59:51Z
dc.date.freetoread2024-10-23
dc.date.issued2024-09-01
dc.date.pubOnline2024-08-21
dc.description.abstractNanobubble technology was used to enhance anaerobic digestion (AD) of thermal-hydrolysis pre-treated sewage sludge for bioenergy recovery. The prepared air, CO2, and H2 nanobubble solutions, with concentrations of 9.88–10.2 × 107 bubbles/mL, remained stable for at least 7 days. After adding them into AD reactors, significantly higher CH4 production (37.1 %) was observed for the CO2 nanobubble treatment, followed by air (25.6 %) and H2 (14.5 %) nanobubble treatments, compared to the control group. CO2 nanobubble treatment performed the best in improving acidogenesis/acetogenesis, resulting in significantly higher volatile fatty acid generation during the initial 3–4 days. A comparison of reactors supersaturated and non-saturated with oxygen has demonstrated most of the biogas uplift observed to result from the nanobubbles rather than from initial oxygen soluble levels, demonstrating the crucial role of nanobubbles in upgrading AD. This study demonstrates, for the first time, that nanobubbles can provide additional benefits when combined with stablished sludge pre-treatment technologies.
dc.description.journalNameBioresource Technology Reports
dc.identifier.citationLyu T, Wu F, Nasar N, et al., (2024) Exploring nanobubble technology for enhanced anaerobic digestion of thermal-hydrolysis pre-treated sewage sludge. Bioresource Technology Reports, Volume 27, September 2024, Article number 101939en_UK
dc.identifier.eissn2589-014X
dc.identifier.elementsID552528
dc.identifier.issn2589-014X
dc.identifier.paperNo101939
dc.identifier.urihttps://doi.org/10.1016/j.biteb.2024.101939
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/23112
dc.identifier.volumeNo27
dc.languageEnglish
dc.language.isoen
dc.publisherElsevieren_UK
dc.publisher.urihttps://www.sciencedirect.com/science/article/pii/S2589014X24001804?via%3Dihub
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectBiogas productionen_UK
dc.subjectResource recoveryen_UK
dc.subjectSludge treatmenten_UK
dc.subjectWaste managementen_UK
dc.subjectUltrafine bubbleen_UK
dc.subject4004 Chemical Engineeringen_UK
dc.subject40 Engineeringen_UK
dc.subject4011 Environmental engineeringen_UK
dc.subject4103 Environmental biotechnologyen_UK
dc.titleExploring nanobubble technology for enhanced anaerobic digestion of thermal-hydrolysis pre-treated sewage sludgeen_UK
dc.typeArticle
dc.type.subtypeJournal Article
dcterms.dateAccepted2024-08-15

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