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Biomethanization of nitrogen rich agricultural and urban wastewaters: biological kinetics and managemet optimization using sequencing batch reactors

2021Tese de doutoramento Acesso restrito
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dc.contributor.advisorBrito, António Guerreiro
dc.contributor.advisorRodrigues, Ana Cristina
dc.contributor.advisorAlonso, Joaquim Mamede
dc.contributor.authorCoura, Renata D´Arc
dc.date.accessioned2022-01-05T10:39:40Z
dc.date.available2025-01-05T01:30:43Z
dc.date.issued2021
dc.descriptionDoutoramento em Engenharia do Ambiente / Instituto Superior de Agronomia. Universidade de Lisboapt_PT
dc.description.abstractThe need of a closed loop economy strategy implying a total resources conservation policy may be the main challenge human communities will face in the near future considering livelihood sustainability and climate vulnerability. Therefore, energy and materials recovery technologies associated to the large amount of organic waste generated by anthropogenic activities, which still need proper treatment due to their impact on the environment, are mandatory as societal priority. This thesis addresses this challenge in the agricultural sector, more specifically on cattle manure waste management, crossing this issue with urban sewage sludge treatment in anaerobic co-digestion processes. The goal was to optimize the biomethanization process of agricultural effluents and sewage sludge, overcoming unbalances in the anaerobic co-digestion kinetics, providing indicators for the location of biogas production facilities. The study comprised a set of integrated specific objectives, namely i) to increase the substrates biodegradability in anaerobic co-digestion processes, ii) to achieve the appropriate inoculum to substrate ratio, iii) to assess ultrasound and struvite precipitation pretreatments in raw substrates and iv) to define a spatial GIS-based analysis for facilities location in such context of energy and nutrients recovery. The results revealed sonication as a promising auxiliary technology for energy effectiveness. The optimization of the anaerobic co-digestion process was conducted to reduce biological inhibition constraints related to carbon to nitrogen ratio unbalance and to facilitate further energy recovery from anaerobic co-digestion process. Thus, an optimized performance in terms of methane production using ultrasound pretreatment processes and struvite precipitation, as well as the combination of both processes, was achieved. Finally, the previous studies allowed the knowledge for the development of a specific resources allocation methodology for the location of biogas production unitspt_PT
dc.description.versionN/Apt_PT
dc.identifier.citationCoura, R.D. - Biomethanization of nitrogen rich agricultural and urban wastewaters: biological kinetics and managemet optimization using sequencing batch reactors. Lisboa: ISA, 2021, 145 p.pt_PT
dc.identifier.tid101645180
dc.identifier.urihttp://hdl.handle.net/10400.5/22912
dc.language.isoengpt_PT
dc.publisherISA/ULpt_PT
dc.relationGDE 201469/2014-6pt_PT
dc.subjectagricultural residuespt_PT
dc.subjectnutrients recoverypt_PT
dc.subjectstruvite precipitationpt_PT
dc.subjectultrasound solubilizationpt_PT
dc.subjectspatial modelspt_PT
dc.subjectco-digestionpt_PT
dc.subjectbiomethanizationpt_PT
dc.subjectinoculum to substrate ratiopt_PT
dc.subjectbiogas productionpt_PT
dc.subjectmethane yieldpt_PT
dc.titleBiomethanization of nitrogen rich agricultural and urban wastewaters: biological kinetics and managemet optimization using sequencing batch reactorspt_PT
dc.typedoctoral thesis
dspace.entity.typePublication
rcaap.embargofctEstá em processo um pedido de registo de patentept_PT
rcaap.rightsopenAccesspt_PT
rcaap.typedoctoralThesispt_PT

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