Biogas energy

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  • This book contains research on the chemistry of each step of biogas generation, along with engineering principles and practices, feasibility of biogas production in processing technologies, especially anaerobic digestion of waste and gas production system, its modeling, kinetics along with other associated aspects, utilization and purification of biogas, economy and energy issues, pipe design for biogas energy, microbiological aspects, phyto-fermentation, biogas plant constructions, assessment of ecological potential, biogas generation from sludge, rheological characterization, etc....

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  • Renewable energy is shifting from the fringe to the mainstream of sustainable development. Past donor efforts achieved modest results but often were not sustained or replicated, which leads now to greater market orientation. Markets for rural household lighting with solar home systems, biogas, and small hydro power have expanded through rural entrepreneurship, government programs, and donor assistance, serving millions of households. Applications in agriculture, small industry, and social services are emerging. Public programs resulted in 220 million improved biomass cook stoves.

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  • In electrical power generation system the present trend is to maximize the renewable energy penetration ratio as much as possible. Among the renewable energy sources such as wind, solar, biogas/biomass, tidal, geothermal, etc., wind energy has the huge potential to play an important role in energy market along with conventional energy sources. Therefore, reasonably the research on wind power is progressing rapidly.

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  • Anaerobic digestion is a process by which microorganisms break down biodegradable material in the absence of oxygen. Anaerobic digestion can be used to treat various organic wastes and recover bio-energy in the form of biogas, which consists mainly of CH4 and CO2. A great option for improving yields of anaerobic digestion of solid wastes is the co-digestion of multiple substrates.

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  • In Canada, other factors such as digester insulation, because of cold weather, also influence the final cost of such a system. To be economical, digester capital cost must be offset by energy savings, fertilizer use, and bedding replacement . Another disadvantage 17 is that fresh poultry manure can be hauled as solid manure, but if digested, the dilution water would increase the original volume by about four times . As well, the biogas produced has low energy per unit volume and can only be used for on-site operations such as running an electrical generator.

    pdf63p loginnhanh 22-04-2013 13 1   Download

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