Biogas Production from Food Waste
Biogas Production from Food Waste report
Anaerobic digestion (AD) is a promising method to treat the kitchen wastes. While Anaerobic digestion for treatment of animal dung is common in rural parts of developing countries, information on technical and operational feasibilities of the treatment of organic solid waste is limited in those parts. There are many factors affecting the design and performance of anaerobic digestion. Some are related to feedstock characteristics, design of reactors and operation conditions in real time. Physical and chemical characteristics of the organic wastes are important for designing and operating digesters, because they affect the biogas production and process stability during anaerobic digestion. They include, moisture content, volatile solids, nutrient 10contents, particle size, & biodegradability. The biodegradability of a feed is indicated by biogas production or methane yield and percentage of solids (total solids or total volatile solids) that are destroyed in the anaerobic digestion. Biogas Production from Food Waste-The biogas or methane yield is measured by the amount of biogas or methane that can be produced per unit of volatile solids contained in the feedstock after subjecting it to anaerobic digestion for a sufficient amount of time under a given temperature which is taken to be laboratory temperature in our case.In recent times varied technological modifications and improvements have been introduced to diminish the costs for the production of biogas. Different Methods have been developed to increase speed of fermentation for the bacteria gas producers, reduction of the size of the reactors, the use of starchy, sugary materials for their production , the modification of the feeding materials forfermentationand the exit of the effluent for their better employment, as well as compaction of the equipments to produce gas in small places like back-yard, among others.Larger facilities operating costs can be reduced, per unit, to the point that, in the current economic framework, very large Anaerobic Digestion facilities can be profitable whereas small ones are not this is what is Economics of scale. If energy prices continue to rise and the demand for local waste treatment, and fertilizers increases, this framework may change.
Home biogas is widely produced in developing regions of the world. The World Bank and the United Nations actively encourage its use as a cheap, clean energy source. China has 27 million biogas plants.But developed regions, including Australia, have been slow to exploit this vast potential. Given that Australia is one of the most carbon-intensive countries on Earth, this is unfortunate.The failure to embrace home biogas is partly due to a lack of clear regulations about its use. Where is the Home Biogas Act? Almost every Australian backyard has an independent gas bottle to power the ubiquitous barbecue, so clearly storing gas in the backyard is not a problem. My biogas system came with robust safety certificates, warranties and insurance, and these systems do not feature high-pressure gas pipes.