BIO GAS





Biogas means a gas produced by the anaerobic digestion or fermentation of organic matter. The organic matter can be manure, sewage sludge, municipal solid waste, biodegradable waste or any other biodegradable feedstock. Biogas is mainly methane and carbon dioxide.
Depending on where it is produced, biogas is also called:




BENEFITS
Use of biogas would generate enough electricity to meet up to 3% of the continent's electricity expenditure]. In addition, biogas could potentially help reduce global climate change. High levels of methane are produced when manure is stored under anaerobic conditions. During storage and when manure has been applied to the land, nitrous oxide is also produced as a byproduct of the gentrification process. Nitrous oxide (N2O) is 320 times more aggressive as a greenhouse gas than carbon dioxide and methane 25 times more than carbon dioxide.
The production of valuable green energy (electricity, heating, cooling).

  1. Reduction of greenhouse gas emissions
  2. Reduction in nutrient loss and washout from the fields (manure processing plants)
  3. Recirculation of nitrogen, which reduces the need to use fossil fuels for the extraction of nitrogen from the air
  4. Recirculation of phosphorous, which helps reducing the pressure on the world's limited phosphorous resources
  5. Fewer pathogens
  6. Efficient use of organic by-products
  7. Reduction of odour emissions (manure processing plants)
  8. Efficient energy conversion of wet biomasses


Agricultural
Anaerobic digestion of livestock manure and organic food residuals provides security to the agricultural/ food sector. Several benefits include:

- financial diversification and risk mitigation through energy sales
- implementing strong nutrient management practices
-supporting local processing of agricultural production
-reducing commercial fertilizer requirements and costs


Economic
The green economy benefits of biogas are considerable and include:

– local job creation in technical, manufacturing and construction/trades
– economic development generating billions of dollars of investment in rural communities
– creation of useful by-products from wastes, acting as a significant economic multiplier


Environmental
The environmental benefits of biogas are numerous.

– control weed seed germination, reducing herbicide use
– remove odour-causing compounds
– capture and use of methane, a greenhouse gas 21 times worse than CO2
– convert high energy waste streams into fuel, diverting them from landfill


Energy
As a source of renewable energy, biogas has unique characteristics and offers many energy end uses. Biogas can

– generate reliable, flexible power 24/7
– manage intermittent renewable power supply through means of storage and flexible power
– improve/support local infrastructure and power quality
– upgrade to renewable natural gas (RNG) for injection into the natural gas grid, delivering ‘green’ renewable energy through existing infrastructure
– be compressed for use as transportation fuel, or direct replacement of fossil-sourced natural gas in household heating, or industrial, commercial and institutional processes

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