School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China.
Waste Manag. 2012 Mar;32(3):603-12. doi: 10.1016/j.wasman.2011.10.020. Epub 2011 Nov 18.
Waste recycling for paper production is an important component of waste management. This study constructs a physical input-output life-cycle assessment (PIO-LCA) model. The PIO-LCA model is used to investigate environmental impacts of four categories of waste recycling in China's paper industry: crop straws, bagasse, textile wastes and scrap paper. Crop straw recycling and wood utilization for paper production have small total intensity of environmental impacts. Moreover, environmental impacts reduction of crop straw recycling and wood utilization benefits the most from technology development. Thus, using crop straws and wood (including wood wastes) for paper production should be promoted. Technology development has small effects on environmental impacts reduction of bagasse recycling, textile waste recycling and scrap paper recycling. In addition, bagasse recycling and textile waste recycling have big total intensity of environmental impacts. Thus, the development of bagasse recycling and textile waste recycling should be properly limited. Other pathways for reusing bagasse and textile wastes should be explored and evaluated. Moreover, imports of scrap paper should be encouraged to reduce large indirect impacts of scrap paper recycling on domestic environment.
废纸回收用于造纸是废物管理的重要组成部分。本研究构建了一个物理投入产出生命周期评估（PIO-LCA）模型。该模型用于研究中国造纸业四类废纸回收的环境影响：农作物秸秆、甘蔗渣、纺织品废料和废纸。秸秆回收和木材用于造纸的总环境影响强度较小。此外，秸秆回收和木材（包括木材废料）用于造纸的环境影响减少最受益于技术发展。因此，应推广使用农作物秸秆和木材（包括木材废料）用于造纸。技术发展对甘蔗渣回收、纺织品废料回收和废纸回收的环境影响减少的作用较小。此外，甘蔗渣回收和纺织品废料回收的总环境影响强度较大。因此，应适当限制甘蔗渣回收和纺织品废料回收的发展。应探索和评估其他再利用甘蔗渣和纺织品废料的途径。此外，应鼓励进口废纸，以减少废纸回收对国内环境的巨大间接影响。
