Overview analysis of bioenergy from livestock manure management in Taiwan

Wen-Tien Tsai and Che-I Lin

Renewable and Sustainable Energy Reviews, 2009, vol. 13, issue 9, 2682-2688

Abstract: The emissions of greenhouse gases (GHGs) from the livestock manure are becoming significant energy and environmental issues in Taiwan. However, the waste management (i.e., anaerobic digestion) can produce the biogas associated with its composition mostly consisting of methane (CH4), which is now considered as a renewable energy with emphasis on electricity generation and other energy uses. The objective of this paper was to present an overview analysis of biogas-to-bioenergy in Taiwan, which included five elements: current status of biogas sources and their energy utilizations, potential of biogas (methane) generation from livestock manure management, governmental regulations and policies for promoting biogas, benefits of GHGs (i.e., methane) emission reduction, and research and development status of utilizing livestock manure for biofuel production. In the study, using the livestock population data surveyed by the Council of Agriculture (Taiwan) and the emission factors recommended by the Intergovernmental Panel on Climate Change (IPCC), the potential of methane generation from livestock manure management in Taiwan during the period of 1995-2007 has been estimated to range from 36 to 56 Gg year-1, indicating that the biogas (methane) from swine and dairy cattle is abundant. Based on the characteristics of swine manure, the maximum potential of methane generation could reach to around 400 Gg year-1. With a practical basis of the total swine population (around 4300 thousand heads) from the farm scale of over 1000 heads, a preliminary analysis showed the following benefits: methane reduction of 21.5 Gg year-1, electricity generation of 7.2 x 107 kW-h year-1, equivalent electricity charge saving of 7.2 x 106 US$ year-1, and equivalent carbon dioxide mitigation of 500 Gg year-1.

Keywords: Biogas; Livestock; Manure; management; Emission; estimation; Promotion; measure; Bioenergy (search for similar items in EconPapers)
Date: 2009
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Citations: View citations in EconPapers (6)

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