LCA に基づく中国における地域別のセメント産業の環境負荷の定量化と影響評価

抄録

Cement industry is one of the key sources of air pollution and it is an energy intensive industry. Life cycle impact assessment (LCIA) is one of the basic steps in life cycle assessment methodology (LCA). Based on the method of LCA, this paper presents a comparative study of the LCIA of different life cycle inventories (LCI) for the cement industry of whole China from 2000 to 2008. This also discusses LCA for 22 individual provinces, 5 autonomous regions and 4 municipalities in China for the year 2008. Second, a regional based comparative study of life cycle impact (LCIA) of different gases (CO₂, SO₂, NO_x and particulate matter) was conducted using CML methodology developed by Leiden University. The impact of cement manufacturing was divided into 4 separate categories namely, greenhouse effects, acidification, eutrophication and the toxicity to the human being. The total environmental impact related to cement manufacturing was calculated by summation of the above mentioned four categories. The calculated impact result of China shows the severity of environmental problems of the cement industry in China compared to the EU and Japan. Pollution reduction of cement industry is still a great challenge for China.