Enhancing the hydrolysis yield in thermophilic anaerobic digestion of cattle manure

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dc.contributor.authorBailleul, Gautier
dc.contributor.authorBettiga, Maurizio
dc.contributor.authorKampman, Christel
dc.contributor.departmentChalmers tekniska högskola / Externsv
dc.contributor.departmentChalmers University of Technology / Externalen
dc.date.accessioned2019-07-03T14:38:25Z
dc.date.available2019-07-03T14:38:25Z
dc.date.issued2015
dc.description.abstractThe purpose of the research is to improve the biogas production rate and yield during anaerobic digestion of cattle manure. Hydrolysis being an anaerobic digestion-limiting step, a literature study was carried out on the ways to improve it by varying the experimental conditions. Bioaugmentation, addition of surfactant and decreasing the pH to 7.0 were expected to enhance biogas production. Growth of selected organisms was studied for their addition into reactors. Two reactors were operated under pH-control at 7.0 but the experiment had to be stopped because of the acid addition that was excessive. Meanwhile, experiments were made to design an efficient protocol for extracting proteins from the reactor digestate and comparing produced hydrolytic enzymes depending of the conditions. It was shown that proteins are mostly present in the liquid fraction.
dc.identifier.urihttps://hdl.handle.net/20.500.12380/252204
dc.language.isoeng
dc.setspec.uppsokTechnology
dc.subjectEnergi
dc.subjectLivsvetenskaper
dc.subjectHållbar utveckling
dc.subjectMikrobiologi
dc.subjectIndustriell bioteknik
dc.subjectBioprocessteknik
dc.subjectBioenergi
dc.subjectEnergy
dc.subjectLife Science
dc.subjectSustainable Development
dc.subjectMicrobiology
dc.subjectIndustrial Biotechnology
dc.subjectBioprocess Technology
dc.subjectBioenergy
dc.titleEnhancing the hydrolysis yield in thermophilic anaerobic digestion of cattle manure
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
dc.type.uppsokH
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