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LCI Analysis of Recycled Information Paper According to the Brightness Grade

机译：根据亮度等级的再生信息纸张LCI分析

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摘要

LCI (Life Cycle Inventory) analysis was conducted for information paper made of 100% recycled pulp to find the effects of the brightness grade on the environmental load of the paper. The system boundary includes used-paper collecting, synthesis of chemicals production, paper-making, distribution, consumption, refuse recovery, incineration and land fill. CO_2, SO_x and NO_x emission during the life cycle of the paper were investigated. It was found that the total amount of CO_2 emissions was increased with the increase in the brightness grade from 57% to 70%. This is attributable to the increase in the amount of pulp sludge incineration derived from a lower yield, and the increased amount of chemicals used. 35%-37% of CO_2, 43%-68% of SO_x and 88%-90% of NO_x emissions orginated from electric power and steam generation. It was suggested that the most effective method for decreasing the environmental load is to improve the energy efficiency in the papermaking industry.
机译：LCI（生命周期库存）分析进行了100％再循环纸浆制成的信息纸，以找到亮度等级对纸张环境负荷的影响。 系统边界包括使用的纸张收集，化学品的合成，造纸，分配，消费，垃圾恢复，焚烧和陆地填充。 研究了纸张生命周期的CO_2，SO_X和NO_X发射。 发现CO_2排放总量随着57％至70％的亮度等级的增加而增加。 这可归因于源自产量较低的纸浆污泥焚烧量的增加，以及所用的化学物质的增加。 35％-37％的CO_2，43％-68％的SO_X和88％-90％的NO_X排放从电力和蒸汽产生。 有人建议，降低环境载荷的最有效方法是提高造纸行业的能效。

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