- Biogas production by
anaerobic digestion is popular for treating biodegradable waste because
valuable fuel can be produced while destroying disease-causing pathogens
and reducing the volume of disposed waste.
- The main factors that
influence biogas production are pH (level of acidity) of the feedstock
and the temperature. It is well established that a biogas plant works
optimally at pH level of 7 or just above (neutral solution) and a
temperature of around 35o C.
- The methane in biogas
combusts more cleanly than coal, and produces more energy with less
emissions of carbon dioxide. The harvesting of biogas is an important
role of waste management because methane is a greenhouse gas with a
greater global warming potential than carbon dioxide.
- Biogas technology makes
optimal utilization of the valuable natural resource of dung; it
provides nearly three times more useful energy that dung directly burnt,
and also produces nutrient-rich manure.
- Recently, developed
countries have been making increasing use of biogas generated from both
wastewater and landfill sites or produced by mechanical biological
treatment systems for municipal waste.
- Biogas plants can be found
in countries such as India, China, Philippines, Germany, Austria and
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