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Full-Text Articles in Engineering
Biohydrogen Production From Synthetic Lignocellulosic Hydrolysates: Acclimatization And Inhibition, Basem Mikhaeil Fawzy Haroun
Biohydrogen Production From Synthetic Lignocellulosic Hydrolysates: Acclimatization And Inhibition, Basem Mikhaeil Fawzy Haroun
Electronic Thesis and Dissertation Repository
The growing concerns regarding climate change, population growth, depletion of fossil fuel, and pollution arising from the combustion of petroleum-based fuel can be identified as the most important factors driving the urgent need for environmentally friendly renewable energy. Among all the recognized alternatives to gasoline-based fuel, hydrogen is not only considered as a clean energy but also it has a high energy content of 142 kJ/g which is almost three times higher compared to other fossil fuels. Only water and heat are the by-products of hydrogen combustion. Dark fermentative hydrogen production is a feasible option in which inexpensive, low-grade, carbohydrate-rich, …
The Effects Of Furfural On Biological Hydrogen Production In Batch And Microbial Electrolysis Cell, Hyeongu Yeo
The Effects Of Furfural On Biological Hydrogen Production In Batch And Microbial Electrolysis Cell, Hyeongu Yeo
Electronic Thesis and Dissertation Repository
Furfural inhibits biohydrogen production and numerous studies has been carried out on detoxification of furfural to enhance biofuel production. Electrochemical detoxification of furfural is a new approach to remove furfural without the degradation of sugars. However, there is limited information on the effects of the degradation products of furfural on biohydrogen production in batch tests and the impact of furfural on anode-respiring bacteria (ARB) in microbial electrolysis cells (MECs). This study investigated the effect of furfural and its derivatives, furfuryl alcohol (FFA) and 2-furoic acid (FA), on biohydrogen production. The impact of furfural on hydrogen production in MECs was also …
Enhancement Of Biohydrogen Production From Co-Fermentation Of Glucose, Starch, And Cellulose, Medhavi Gupta
Enhancement Of Biohydrogen Production From Co-Fermentation Of Glucose, Starch, And Cellulose, Medhavi Gupta
Electronic Thesis and Dissertation Repository
The aim of this study was to assess the synergistic effects of co-fermentation of glucose, starch, and cellulose using anaerobic digester sludge (ADS) on the biohydrogen (H2) production and the associated microbial communities. At initial pH of 5.5 and mesophilic temperature of 37 ºC, the H2 yields were greater by an average of 27 ± 4% in all the different co-substrate conditions compared to the mono-substrate conditions, which affirmed that co-fermentation of different substrates improved the hydrogen potential. The sensitivity of mesophilic ADS to a temperature shock was also investigated. Unacclimatized mesophilic ADS responded well to a …
Enhancement Of Biohydrogen And Biomethane Production From Wastes Using Ultrasonication, Elsayed Elrefaey Elbeshbishy
Enhancement Of Biohydrogen And Biomethane Production From Wastes Using Ultrasonication, Elsayed Elrefaey Elbeshbishy
Electronic Thesis and Dissertation Repository
This thesis demonstrated the feasibility of using ultrasonication to solubilize the particulate matter, suppress the growth of methanogens, and enrich the biohydrogen producers, thus overcoming the main challenge of biohydrogen systems i.e. long-term stability and contamination with methanogens. Furthermore, this work emphasized the benefits of applying ultrasonication inside a bioreactor over using it as a pretreatment for biohydrogen and biomethane production from wastes. The results of this work showed that sonicating hog manure at specific energy (SE) of 500 kJ/kg TS resulted in a 20% increase in methane production and 36% increase in VSS destruction. The viability of using ultrasonication …