LAPSE:2024.1310
Published Article
LAPSE:2024.1310
Experimental Study on Chrome Tanned Leather Shavings Modification—Properties and Prospective for Future Application
Dorota Gendaszewska, Paulina Pipiak, Dorota Wieczorek, Katarzyna Sieczyńska
June 21, 2024
Chrome tanned leather shavings (CTLS) are considered one of the more difficult wastes to manage in the tanning industry. At the same time, this waste is an important source of good quality collagen. The few methods described in the literature for the valorization of these wastes usually require pre-treatment or activation. In this study, an attempt was made to see if raw chrome tanned leather shavings (CTLS) could be modified to obtain secondary raw materials with new physical properties. Glutaraldehyde, glycerol, EDCs, pectin, and tannins were selected for modification of the CTLS. The effectiveness of the processes carried out was confirmed by FTIR analysis of the materials obtained. Changes in the intensity of the characteristic collagen peak (amide I, amide II, and amide III) and changes in the position of the bands in the 1200−1000 cm−1 region were observed in the recorded spectra. The modifications introduced confirmed changes in the physical properties of samples M1−M5, including an increase in bulk density from 0.15 to 0.59 g cm−3, and improved tensile strength is some cases. The elemental content results of the samples tested showed the resulting modified CTLS were free of Cd, Hg, Pb, and Cr(VI). It was also confirmed tanning waste contained significant amounts of various valuable elements. The research also included preliminary tests to assess the environmental impact of the modified materials. In a phytotoxicity test conducted on modified CTLS, M1 with pectins showed the highest root stimulation (105%), while samples with glutaraldehyde and unmodified CTLS showed significant root inhibition (75%, 74%). Other samples showed moderate plant toxicity and seed germination was not significantly affected.
Keywords
chrome tanned leather shavings, FTIR analysis, heavy metal, phytotests
Subject
Suggested Citation
Gendaszewska D, Pipiak P, Wieczorek D, Sieczyńska K. Experimental Study on Chrome Tanned Leather Shavings Modification—Properties and Prospective for Future Application. (2024). LAPSE:2024.1310
Author Affiliations
Gendaszewska D: Łukasiewicz Research Network—Lodz Institute of Technology, 73 Zgierska Str., 91-463 Lodz, Poland [ORCID]
Pipiak P: Łukasiewicz Research Network—Lodz Institute of Technology, 73 Zgierska Str., 91-463 Lodz, Poland
Wieczorek D: Łukasiewicz Research Network—Lodz Institute of Technology, 73 Zgierska Str., 91-463 Lodz, Poland
Sieczyńska K: Łukasiewicz Research Network—Lodz Institute of Technology, 73 Zgierska Str., 91-463 Lodz, Poland
Journal Name
Processes
Volume
12
Issue
1
First Page
228
Year
2024
Publication Date
2024-01-21
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr12010228, Publication Type: Journal Article
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LAPSE:2024.1310
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doi:10.3390/pr12010228
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Jun 21, 2024
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CC BY 4.0
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