This study used life cycle assessment (LCA) to clarify the feasibility and potential effects of a new type of
bioenergy by evaluating the cost, energy, and environmental efficiency of biomass pyrolysis oil in the
production and usage stages. An annual yield of 10,000 t of pyrolysis oil processed with the raw material
of Cryptomeria residue was selected as the evaluated target. We used life cycle inventory and effect
assessment to evaluate the advantages and disadvantages associated with the production of the new
bioenergy. GaBi4 software and the Eco-indicator 95 system were selected for the evaluation. The
resulting calculated specific cost of pyrolysis oil production was NT$11,758/m3 pyrolysis oil
(NT$1 ¼ US$0.034 in October 2012), and pyrolysis oil with its byproduct could provide the energy of
36,019 MJ/m3 pyrolysis oil. The outputeinput energy ratio is approximately 13.2, indicating the high
energy efficiency of pyrolysis oil. In terms of the environmental aspect, the total net carbon emission is
176.6 kg CO2/m3 pyrolysis oil. Using pyrolysis oil and the biochar byproduct to replace fuel oil and coal
can produce a reduction of approximately 2835 kg CO2/m3 pyrolysis oil (0.079 kg CO2/MJ) of greenhouse
gas emissions. The environmental impact indicator is 0.105 Pt, which is much lower than the fuel oil
energy-equivalent. These findings suggest that pyrolysis oil produced from Cryptomeria residue yields
enhanced energy and environmental efficiency. However, the production cost is higher than that of
existing fossil fuels.
This study used life cycle assessment (LCA) to clarify the feasibility and potential effects of a new type ofbioenergy by evaluating the cost, energy, and environmental efficiency of biomass pyrolysis oil in theproduction and usage stages. An annual yield of 10,000 t of pyrolysis oil processed with the raw materialof Cryptomeria residue was selected as the evaluated target. We used life cycle inventory and effectassessment to evaluate the advantages and disadvantages associated with the production of the newbioenergy. GaBi4 software and the Eco-indicator 95 system were selected for the evaluation. Theresulting calculated specific cost of pyrolysis oil production was NT$11,758/m3 pyrolysis oil(NT$1 ¼ US$0.034 in October 2012), and pyrolysis oil with its byproduct could provide the energy of36,019 MJ/m3 pyrolysis oil. The outputeinput energy ratio is approximately 13.2, indicating the highenergy efficiency of pyrolysis oil. In terms of the environmental aspect, the total net carbon emission is176.6 kg CO2/m3 pyrolysis oil. Using pyrolysis oil and the biochar byproduct to replace fuel oil and coalcan produce a reduction of approximately 2835 kg CO2/m3 pyrolysis oil (0.079 kg CO2/MJ) of greenhousegas emissions. The environmental impact indicator is 0.105 Pt, which is much lower than the fuel oilenergy-equivalent. These findings suggest that pyrolysis oil produced from Cryptomeria residue yieldsenhanced energy and environmental efficiency. However, the production cost is higher than that ofexisting fossil fuels.
การแปล กรุณารอสักครู่..
