Affiliation:
1. Faculty of Chemical Technology, Kaunas University of Technology, Radvilenu pl. 19, 50254 Kaunas, Lithuania
Abstract
Due to their variety, specific activity, and mild reaction conditions, enzymes have a wide application in beam house processes such as soaking, dehairing, bating, and de-greasing. Recently, due to improvements in biotechnology, re-bating after chroming has received increased attention. The aim of this work was to investigate the application of enzyme preparation in the re-bating process and its effect on the semifinished and finished product, as well as its influence on post-tanning operations. The enzymatic treatment of chromed semifinished leather (wet blue) led to a higher shrinkage temperature (1–6 °C), greater water vapour absorption (0.3–5.5%), better chromium compounds exhaustion during re-chroming (4–21%), and better dye penetration. Moreover, collagen was affected during the enzymatic process; the results showed a greater concentration influence in the operation compared to the process time. On the other hand, no effect on the physical and mechanical properties and fat-liquoring process was observed. Overall, these results indicate that some properties and processes are improved; however, before use for re-bating, every enzyme should be carefully investigated.
Subject
General Materials Science
Reference38 articles.
1. Toxic waste in leather industry;Barik;Energy from Toxic Organic Waste for Heat and Power Generation,2019
2. Toxic hazards of leather industry and technologies to combat threat: A review;Dixit;J. Clean. Prod.,2015
3. Applications of enzymes in leather processing;Khambhaty;Environ. Chem. Lett.,2020
4. Enzyme technology applications in leather processing;Choudhary;IJCT,2004
5. Influence of elastin degradation on the mechanical properties of leather;Schropfer;J. Am. Leather Chem. Assoc.,2014
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