Open AccessQuantification and evaluation of chemical footprint of woollen textiles
Author(s) -
Xiang Ji,
Weiran Qian,
Zejun Tian,
Yang Li,
Laili Wang
Publication year - 2021
Publication title -
industria textilă
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.281
H-Index - 14
ISSN - 1222-5347
DOI - 10.35530/it.072.01.1773
Subject(s) - pollutant , dyeing , environmental science , pulp and paper industry , chemical industry , ecotoxicity , textile , chemical toxicity , environmental chemistry , waste management , environmental engineering , chemistry , toxicity , engineering , materials science , water pollutants , organic chemistry , composite material
The chemical pollutants discharged in the production processes of textile products cause severe impact on theenvironment. The chemical footprint (ChF) methodology provides a new way to quantify the toxicity impacts caused bychemical pollutants. ChF does well in identifying priority chemical pollutants and helping enterprises to select greenerchemicals to reduce the environment impacts. In this study, the ChF of woollen yarn were assessed with the data thatcollected from the production processes. The results showed that the ChF of dyeing process (4.10E+06 l) accounted forthe largest proportion, because a large number of auxiliaries were used in the dyeing process to prevent uneven dyeingand colour difference, followed by scouring (7.79E+05 l) and finishing (8.11E+03 l). Among all the discharged chemicalpollutants, polyoxyethylene nonyl phenyl ether (1.37E+06 l) caused the most ecotoxicity severe impact on theenvironment due to its high bioaccumulation and high toxicity to ecosystem, followed by sulfuric acid (1.03E+06 l).Sodium chloride and hydrogen peroxide were the two substances that caused the least environmental load. The overalluncertainty caused by toxicity prediction data accounting for 20.2% of the total ChF, and the uncertainty of the scouringprocess was the most. The results are referable for wool textiles producers to enhance the textile chemicalsmanagement.