Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"biomethane potential"”.
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The Effect of a Trace Element Supplement on the Biomethane Potential of Food Waste Anaerobic Digestion
… element was determined by the gas density-based biomethane potential method at mesophilic (37°C) conditions over 30 days. The three treatments were inoculum only, food waste and inoculum, and food waste and inoculum with an added trace element solution. There was no significant difference between …
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Biomethane production from macroalgae
Irish brown seaweeds have been identified as a potential bio-resource with potentially high specific methane yields. Anaerobic digestion is deemed the most feasible technology due to its commercial viability for handling such wet feedstock. However, the biomethane potential of seaweed is highly …
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The Relationships Between the Ruminal Digestibility Kinetics of Fiber, Total-Tract Nutrient Digestibility, and Methane Emissions from Lactating Dairy Cattle
… and passage kinetics of fiber fractions, potentially degradable (pdNDF) and undegraded (uNDF) neutral detergent fiber (NDF), are influenced by both forage quality and dietary composition. This dissertation examined how forage type, maturity, and dietary inclusion level affect nutrient …
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Biomethane Recovery Potential from Brewer’s Yeast Using Two-Stage Anaerobic Digestion
… and two-stage anaerobic digestion process using Biomethane Potential Assay on RBY has been performed to assess the methane production from RBY. Before setting up a two-stage reactor, the RBY was pre-treated using the High-Rate Hydrolysis/Acidification (HRHA) process to further evaluate the effect …
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Green grass: developing grass for sustainable gaseous biofuel
… cut from the same field at the same time. Small biomethane potential (BMP) assays were also evaluated for the same grass silage. The results indicated that the CSTR system produced 451 L CH4 kg-1 VS added at a retention time of 50 days while effecting a 90% destruction in volatile dry solids. The …
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Towards development of biogas production for New Zealand on-farm greenhouse gas reduction
… dairy goat and cow manure properties and biogas potential, an experimental assessment of New Zealand dairy cow and goat manure processing routes including application of ultrasonic pretreatment (UP) to enhance biogas production, and a comprehensive carbon emission reduction assessment, comparing …
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A System-Wide Model for Solid Waste Separation and Food Waste Discharge to Sewer Systems
… food waste was manually simulated. The augmented biomethane potential (ABMP) experiment was used to obtain the required research data. The ABMP data was used to determine the substrates' biodegradable composition. The biodegradable composition was carried out using two approaches. The first …
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DEFATTED SEED CAKES RECOVERY TO INCREASE BIOFUEL PRODUCTION SUSTAINABILITY FROM SECOND-GENERATION OIL-CROPS
… oil, low chemical input requirements, and potential cultivation on marginal lands. However, data on their sustainability are scarce and sometimes contradictory, and their ability to comply with RED II requirements remains unclear. To address this, valorisation of by-products from the …
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International biogas applications
… part of this thesis, the biogas and economic potential from wastes and energy crops in a Mexican context are analysed. In Mexico AD from food waste has the potential of producing 42 PJ and to reduce 17.9 MtCO2e on a yearly basis. An urban centralised plant for the co-digestion of food waste …
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Biorefining Sewage for Energy and Green Chemicals
… VFA yields in the first stage and overall biomethane yields in the second stage. It was shown that a two-stage fermentation of PS successfully enhanced biomethane yields by up to 19.14%. Also, a first-stage HRT of 5 days achieved the highest mean total VFA yield of 95 gvfa kgvs-1 as well as …
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Integration of anaerobic digestion with bio-electrochemical technologies in cascading circular bioeconomy systems producing biofuel and chemicals
… pollution whilst simultaneously generating biomethane (a clean energy source which can be used as a direct replacement for natural gas), biofertilizer (which can reduce fossil fertiliser use), and biogenic CO2 (which can be further valorised). However, many anaerobic digestion systems are …
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Improving the anaerobic co-digestion of pelagic Sargassum and food waste into biogas and a bio-fertiliser using hydrothermal pre-treatment: Concept to application in the Caribbean
… This macroalgae has also been studied as potential feedstock for biofuel production and a favourable alternative for conventional fossil fuels, given its low lignin and high polysaccharide content. However, the restricted bioavailability of structurally complex carbohydrates for microbial …
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Evaluation of a data-driven primary sedimentation tank model using settleometer data
… into five different SVGs. Along with the Augment Biomethane Potential (AugBMP) test procedure and parameter estimation tools, the particles from the SVGs can be fractionated into BPOset, UPOset, and ISetS. To this date, however, the accurateness of the 5C-settleometer to provide accurate FS-PST …
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Sequential temperature phased enhanced anaerobic digestion using bioaugmentation microbes to enhance biomethane production from alkali pretreated late cut grass and late cut grass silage
… greenhouse gas emissions. Apart from producing biomethane that can substitute for fossil derived natural gas, heat and electricity, the digestate from the anaerobic digestion process can serve as biofertilizer that can also replace fossil-based fertilizer usage. Anaerobic digestion in most …