| Summary: | 碩士 === 國立屏東科技大學 === 環境工程與科學系所 === 104 === In order to understand the impacts of using fossil diesel (D100) and WCO-biodiesel blends (W) on the emissions of particulate matter (PM) metals and PAHs from a generator at different loadings, this study utilized traditional fossil diesel added with 20 % and 40 % WCO-biodiesel blends (W20 and W40) as the fuels of generator at 1.5 and 3.0 kW loads to investigate the emission characteristics of PM metals and PAHs. The results showed that compared with D100, using W20 had better reductions of emitted PM, PM metals, Total-PAHs and Total-BaPeq at the two engine loads. The higher load (3.0 kW) had more mentioned reductions. The emitted HMW-PAHs reduction in Total-PAHs reduction was relatively small (1.6 % on average), but the emitted HMW-BaPeq reduction in Total-BaPeq reduction was high (71.2 % on average). The Total-BaPeq reduction was contributed mainly from the reduction of HMW-BaPeq (88 % on average). The contents of emitted PM ΣMetals from small to large were D100, W20 and W40 sequentially. The 21 analyzed PM metals were mainly consisted of Na, Mg, Al, K, Ca, Fe and Zn, accounting for 90 % of ΣMetal. Mn, Cu, Sr and Pb were the main species of the other 14 trace metals. Compared with D100, generator using W20 and W40 slightly increased FC (2.6%) and BSFC (3.6%) at both loads. To consider the impacts of DEEs on the environment and human health, using biodiesels (W20 and W40) could effectively reduce the Total-PAHs (44% on average) and Total-BaPeq (80% on average) of DEEs. Therefore, WCO-biodiesel is a good candidate of clean alternative energy sources.
Keywords: Waste-cooking-oil-biodiesel, Particulate matter, Metal, PAHs
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