Life Cycle Impact Assessment of Woodfree Papers Containing Nonwood Pulp or Deinked Pulp
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概要
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Life cycle impact assessment for woodfree papers containing nonwood pulp (bagasse pulp and kenaf pulp) or deinked pulp (DIP) was investigated by eight kinds of environmental impact methods such as EPS 1992, EPS 2000, Eco-Point 1993, Eco-Point 1997, Eco-Indicator 95, Eco-Indicator 99, Panel method and Distance to Target method, based on the results of LCI (Life Cycle Inventory) analysis.<BR>Considering the environmental impact caused by CO<SUB>2</SUB> emission from biomass, the environmental impact of woodfree paper containing DIP was smaller than that of other kinds of woodfree paper. Not considering the environmental impact caused by CO<SUB>2</SUB> emission from biomass, the environmental impact of woodfree paper made from 100% wood pulp was smaller than that of woodfree paper containing DIP except Eco-Indicator 99. It was evaluated by eight kinds of environmental impact methods that the environmental impact of woodfree paper containing kenaf pulp was the largest in four kinds of woodfree paper. In the comparison of the environmental impacts calculated by eight kinds of environmental impact methods for four kinds of woodfree paper, the ratio of total environmental impact of the kenaf pulp and DIP was less than 1.8 in seven kinds of environmental impact methods except Eco-Indicator 99. It was confirmed that the environmental impact caused by CO<SUB>2</SUB> emission was evaluated larger than that caused by other substances in eight kinds of environmental impact methods, especially accounting for about 70% in six environmental impact methods except Eco-Point 1993 and Eco-Indicator 99
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