Material Flow Analysis of PFCs for the Manufacturing Industry in Taiwan

• Main Authors: Ya-Ting Yang, 楊雅婷
• Other Authors: 李育明
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/12121288731490857784

碩士 === 國立臺北大學 === 自然資源與環境管理研究所 === 96 === In recent years, the influence of global warming has become much more serious than before. The topic of the reduction of greenhouse gases has been taken seriously through the world. In order to alleviate the global warming phenomenon effectively, the Kyoto Protocol which was adopted in Dec 1997 had made a consensus to lower overall emissions of six greenhouse gases- CO2, CH4, N2O, HFCs, PFCs and SF6. Comparing with the CO2 from traditional industries, the Per Fluorinated compounds (PFCs) from manufacturing industries have greater Global Warming Potential (GWP) and may exist in atmosphere for thousand of years. The amount of PFCs from manufacturing industries is not large right now; however, the weighted impact can not be ignored. The objective of this study was to investigate material flow analysis (MFA) of PFCs within the main semiconductor, TFT-LCD and solar photovoltaic industries in Taiwan, in the aspect of industrial ecology. It was intended to establish the framework for MFA of PFCs in our country and analyze input and output of PFCs for the manufacturing industries. The analysis can provide a full-scale examination and constructive suggestions for improvement. The results show the total PFCs emissions from the electronic manu- facturing industries contribute 1.6719 MMTCE in 2006 in Taiwan. The semiconductor industry contributes 74% of total emissions, the TFT-LCD industry contributes 25%, and the solar photovoltaic industry only contributes 1%. The study estimates the PFCs emissions from the electronic manufacturing industries will be 2.7494 MMTCE in 2010 in Taiwan. The semiconductor industry will contribute 65% of total PFCs emissions, the TFT-LCD industry will contribute 29%, and the solar photovoltaic industry will contribute 6%. Estimation of the PFCs emissions from the electronic manufacturing industries will be 5.7708 MMTCE in 2020 in Taiwan; the semiconductor industry will contribute 52% of the total PFCs emissions, the TFT-LCD industry will contribute 31%, and the solar photovoltaic industry will contribute 17%. The study also conducts a scenario simulation, and it takes into account the technology progress that affects the PFCs emissions in the future. In eight scenarios, the reductions of the PFCs emissions are 7.67%~29.67% in 2010, 20.52%~84.96% in 2020. The emissions of the PFCs from Semiconductor and TFT-LCD industries can not reached the desired amount in the international agreement in all scenarios in 2010. Even though there are no agreements of emissions for 2020, the emissions of the PFCs will reduce by 2.2745 MMTCE in all scenarios.