生命周期评价法评估皮革复鞣剂染整过程的环境影响

doi:10.19677/j.issn.1004-7964.2022.05.002

Leather Science and Engineering ›› 2022, Vol. 32 ›› Issue (5): 6-13.doi: 10.19677/j.issn.1004-7964.2022.05.002

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Assessing the Environmental Impact of the Post-tanning Process of Leather Retanning Agents by Life Cycle Assessment

LIU Guantong¹, YU Yue^1,2,*, ZENG Yunhang^1,2, ZHOU Yuxiang¹, WANG Yanan^1,2, SHI Bi^1,2

1. National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China;
2. Key Laboratory of Leather Chemistry and Engineering (Sichuan University), Ministry of Education, Chengdu 610065, China

Received:2022-04-11 Published:2022-10-28 Online:2022-10-10

Abstract

Abstract: Life cycle assessment was applied to evaluate the environmental impact of the post-tanning process of four retanning agents including aromatic syntan BTL, melamine resin DD42, acrylic resin LP and mimosa extract SUN. Results indicate that the retanning agent and the corresponding retanning operation are the important contributors to the environmental impact of post-tanning process, and the environmental impact sequence of the four tested retanning agents is BTL>DD42>LP>SUN. The abiotic depletion potential, primary energy demand, and climate warming potential of the SUN post-tanning process were reduced by 61%, 39%, and 46%, respectively, compared with that of LP post-tanning process, and were decreased by 73%, 55%, and 59%, respectively, compared with that of BTL post-tanning process. This is because only a few mineral and petrochemical resources were consumed and a little greenhouse gas was discharged in the SUN production process. Compared with the LP and SUN post-tanning processes, BTL and DD42 post-tanning processes exhibited remarkably higher environmental impact on the ecological quality and human health, because formaldehyde was used in the production processes of both BTL and DD42. Thus, formaldehyde-free biomass-based materials, i.e. vegetable extracts, are green retanning agents for leather post-tanning systems.

Key words: leather, retanning agent, post-tanning process, life cycle assessment, environmental impact

CLC Number:

TS543

LIU Guantong, YU Yue, ZENG Yunhang, ZHOU Yuxiang, WANG Yanan, SHI Bi. Assessing the Environmental Impact of the Post-tanning Process of Leather Retanning Agents by Life Cycle Assessment[J]. Leather Science and Engineering, 2022, 32(5): 6-13.

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Assessing the Environmental Impact of the Post-tanning Process of Leather Retanning Agents by Life Cycle Assessment

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