Energy Potentials and Carbon Intensity for Bio-natural Gas from Livestock Manure in China
Bio-natural gas(BNG)from livestock manure is a potential alternative energy source that can yield significant resource and environmental benefits.Energy potentials and carbon intensity differences in livestock manure utilization may exist in provincial areas.The spatial and temporal distribution characteristics for the BNG potentials are analyzed.A life-cycle carbon emission accounting model for carbon intensity was proposed.The results show that the scale and intensification of livestock increases with it BNG potential.The BNG potentials vary greatly among provinces.The annual carbon emission reduction potential of BNG from livestock manure reached 1.25 billion tons.The proposed energy potential,spatial characteristics,and carbon intensity measurement are expected to provide better support for enhancing specific regional plans for livestock manure utilization.
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