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 “"anaerobic digestion systems"”.
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Cellulose mineralization in two-stage anaerobic digestion systems
… objective of this research was to evaluate the anaerobic degradation of a simulated high-strength solid waste/sludge, particulate cellulose, by two-stage anaerobic digestion systems. Cellulose hydrolysis and methanogesis were examined in both the thermo-meso and acid-methane two-stage systems …
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A study of multi-stage sludge digestion systems
… of multi-stage thermophilic and/or mesophilic anaerobic sludge digestion systems were studied to evaluate their solids reduction, odor generation after centrifugal dewatering and indicator organism reduction in comparison to single-stage thermophilic and/or mesophilic anaerobic digestion …
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The development of a kinetic model for biological sulphate reduction with primary sewage sludge as substrate
… to a series of experimental lab-scale BSR systems fed PSS and sulphate. The biological processes of importance require inclusion in a kinetic model for BSR. For the biologically mediated processes, the PSS first requires hydrolysis/solubilisation (usually the rate limiting step) and …
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Kinetic modeling and experimentation of anaerobic digestion
Anaerobic digesters convert organic waste (agricultural and food waste, animal or human manure, and other organic waste), into energy (in the form of biogas or electricity). An added benefit to bio-digestion is a leftover high-grade organic fertilizer. Models of the anaerobic digestion process do …
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Integration of anaerobic digestion with bio-electrochemical technologies in cascading circular bioeconomy systems producing biofuel and chemicals
Anaerobic digestion is a waste treatment technology, which can alleviate greenhouse gas emissions, reduce environmental 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 …
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Impact of metallic nanoparticles on anaerobic digestion
… and industrial wastewater treatment. In batch anaerobic digestion systems, AgNPs at the concentration of 40 mg/L did not inhibit methane production, as more than 90% of AgNPs were removed from the liquid to the associated sludge while almost no silver ions were released from AgNPs under …
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Energy from sugarcane by-products : analysis for Kenya
… the national utility for the supply of power. Anaerobic digestion systems, used in the treatment and management of industrial effluent provide an additional benefit of generating boiler fuel in the form of biogas in sugar industries of Kenya. This technology and its application to the sugarcane …
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Investigating factors affecting the anaerobic digestion of seaweed: modelling and experimental approaches
… sources to enhance the energy production of anaerobic systems, and thus their economic value, is one of the current research areas in the field of bioenergy production. Marine biomass represents a unique source of organic matter for the optimisation of anaerobic digestion systems and can be …
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Anaerobic Digestion: Factors Effecting Odor Generation
Land application of anaerobically stabilized biosolids is a beneficial method of handling the solid residuals from a wastewater treatment plant. One of the main issues that restrict land application of biosolids is nuisance odors associated with biosolids. Despite its importance, few studies have …
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Improving the bioconversion of lignocellulosic feedstock to bio-fuels and chemicals
… and perennial rye grass) in different anaerobic digestion systems, evaluating the role of substrate specificity on the pattern of degradation. The two-stage (biohydrogen-biomethane) anaerobic system was found to be more effective in the degradation of lignocellulose, when compared to …
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Microwave-based Pretreatment, Pathogen Fate and Microbial Population in a Dairy Manure Treatment System
Anaerobic digestion and struvite precipitation are two effective ways of treating dairy manure for recovering biogas and phosphorus. Anaerobic digestion of dairy manure is commonly limited by slow fiber degradation, while one of the limitations to struvite precipitation is the availability of …
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GENERATING BIOENERGY AND HIGH-VALUE PRODUCTS FROM HIGH SALINITY FOOD WASTE
… food processing waste were explored using anaerobic digestion and dark fermentation processes, respectively. This study tested adding value to three organic waste streams: household food waste, high salinity food processing waste (composed of glycerin sludge from biodiesel production), and …
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Role of Bioadditions in Sustainable Energy Production
… investigated the effects of yeast bioaddition on anaerobic digestion (AD) of lignin-rich agricultural waste, specifically rye and corn silage, with a focus on understanding the underlying mechanisms of yeast action on the lignocellulosic component of lignin, biogas production and microbial …
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Evaluation of Sewage Digested Sludge Conditioning and Dewatering Through Qualitative and Quantitative Laboratory Methodologies Towards Process Monitoring
… of thermal hydrolysis as a pre-treatment to anaerobic digestion (AD) of mainly secondary sewage sludges (Advanced AD, AAD plants) in comparison with conventional mesophilic AD (CMAD) on conditioning and dewatering of the digestate, as this knowledge seemed to be lacking for an AAD technology …