The renewable energy including biomass energy has drawn much attention in the most of developed countries since 1970s. Improving energy security, decreasing vehicle contribution to air pollution and achieving reduction or even eliminating greenhouse gas (GHG) emissions are primary goals compelling governments to identify and commercialise alternatives to the petroleum fuels. The utilisation of biomass and waste residues can be regarded of energy and environment contributions with an impact upon the reduction of fossil fuel applications. The domestic generation of waste-cooking oil can be achieved with a value of 150 to 200 thousands tonnes which most of those are discarded to drainage system and consequently come of pollution problems. To utilise waste-cooking oil in forms of biodiesel can not only diminish the impact of it upon environment but also reduce the polluted-emission derived from diesel engine. Regarding to agricultural-waste (rice straw), 1.32 million tonnes of rice-straw waste are yielded annually. An optimism strategy should be considered in order to knock down the polluted-effect upon environment. Moreover, methane generated from landfill can be applied for power generation but directly exhaust to atmosphere will produce enormous impacts upon GHG emission. This study is aimed to analyse economic cost-benefit, GHG impact as well as optimisation of integrated strategies of biodiesel, waste rice-straw and landfill gas in Taiwan.

biodisel, rice-straw biomass、biogas