2014 Eco-Friendly And Modern Methods Of Livestock Waste Recycling

 

sLivestock waste is major source of noxious gases, harmful pathogens and odour; hence, there are public health and environmental concerns for proper management and mitigation of the production of these pollutants to protect the environment. This study shows that proper utilization of livestock waste into biogas, compost and vermicompost making can be very useful to increase crop yield and sustainability and deliver financial savings. India and China are the two leading Asian countries using biogas technology. The biogas can be successfully purified and after bottling at 150 bar pressure can be used as CNG cylinders in vehicular and cooking application. The biogas plant of 60 m3 capacity if used for biogas bottling can save $147/day. The integration of composting and vermicomposting is better compared to either composting or vermicomposting as it requires less time to complete cycle and furthermore, the substrates produced after combined process has better physical and chemical properties which can support crops. The recent work suggested that algae cultivation from livestock waste can be converted into bio-oil and other many valuable products. The waste fed or livestock integrated fish farming also has good potential to generate income.