Collagen hydrolysate from chromed shavings for leather finish

Kubilius, Karolis; Valeikiene, V.; Valeika, Virgilijus

doi:10.24264/icams-2020.iv.10

Cited by 2 publications

(2 citation statements)

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“…The previous investigation allowed the conclusion that a much lower chromium content in hydrolysate, using the same method of hydrolysis, can be reached using chromed shavings -less than 10 mg/L [28]. Accordingly, the method is suitable for finished leather powder hydrolysis only from a protein recovery point of view but is not appropriate due to the high content of chromium com pounds in the liquid hydrolysate.…”

Section: Hydrolysis Of Leather Powdermentioning

confidence: 99%

Hydrolysis of used leather and application of hydrolysates

Biškauskaitė,

Miškūnaitė,

Plavan

et al. 2024

PEAS

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The leather industry generates a significant amount of various wastes, and their utilisation is a serious task for researchers. Ways to reuse or decontaminate such waste are being developed intensively. Unfortunately, the reuse of finished leather, which eventually becomes waste, is almost unexplored. The present research is designed to evaluate the potential of finished leather hydrolysis to obtain protein hydrolysates suitable for reuse in leather processing and to establish factors that influence leather quality during such an application. Enzyme preparation Vilzim PRO Conc was characterised as a potential agent for such hydrolysis. The addition of 3-4% Vilzim PRO Conc is appropriate for the enzymatic stage of the hydrolysis process. It was established that after alkalineenzymatic hydrolysis of used leather powder the obtained hydrolysates are complicated systems containing proteins, chromium compounds, dyes, fatliquoring materials, etc. Hydrolysates could be used for the dyeing of chromed leather. The method of preparation for dyeing and dyeing of wetblue leather with the use of hydrolysate influences the depth of dye penetration and the quality of finished leather. It was established that the neutralisation process is not necessary before such dyeing. Also, an increased amount of formic acid is necessary to improve the bonding of fatliquors with dermal tissue after treatment with hydrolysate.

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Section: Hydrolysis Of Leather Powdermentioning

confidence: 99%

Hydrolysis of used leather and application of hydrolysates

Biškauskaitė,

Miškūnaitė,

Plavan

et al. 2024

PEAS

View full text Add to dashboard Cite

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“…Protein from chrome shavings may be reused after chemical modification as a replacement for commercial retanning products [37]. Moreover, the collagen hydrolysate obtained from chromed shavings after alkali and enzymatic hydrolysis is suitable as a component of leather finishing coatings (as a 5% addition) [38]. In study [39], a protein-based product was developed from raw trimming waste and used in a chrome tanning process to enhance the exhaustion level of chromium.…”

Section: Introductionmentioning

confidence: 99%

Production of Agglomerates, Composite Materials, and Seed Coatings from Tannery Waste as New Methods for Its Management

Ławińska

2021

Materials

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This paper presents methods for managing waste produced by the leather industry, including tanning shavings derived from chrome tanning technologies and collagen preparations. Shavings were classified according to their shape (in accordance with Zingg’s shape classification). The content of individual elements was determined, together with the content of volatile organic compounds. Two new products were developed as part of the completed works: agglomerates (methods of non-pressure granulation) and composite materials were produced on the basis of tanning shavings and mineral fillers. Young’s modulus values classify these composite materials in the group of polymers and certain materials from the group of elastomers. A method for seed coating (on the example of legumes and rape) was also developed using a disc granulator, including collagen preparations in one of the layers as a solution for preventing the effects of droughts (biostimulant). The analyses of selected properties of the new products confirm the wide possible application of waste shavings and collagen preparations in a circular economy, especially in the construction, packaging, and agricultural sectors.

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Collagen hydrolysate from chromed shavings for leather finish

Cited by 2 publications

References 5 publications

Hydrolysis of used leather and application of hydrolysates

Hydrolysis of used leather and application of hydrolysates

Production of Agglomerates, Composite Materials, and Seed Coatings from Tannery Waste as New Methods for Its Management

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