Comparison of Granulation Methods for Tannery Shavings

Ławińska, Katarzyna; Modrzewski, R.; Obraniak, Andrzej

doi:10.5604/01.3001.0014.2396

Cited by 10 publications

(14 citation statements)

References 12 publications

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“…The management of tannery by-products is a significant problem for leather producers. A comprehensive solution to the problem of disposal of this waste is very important from an economic and environmental point of view [60,61]. The generation of such huge amounts of various types of waste during the entire technological process generates high costs for the plant.…”

Section: Discussionmentioning

confidence: 99%

The Circular Economy in the Management of Waste from Leather Processing

et al. 2023

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The tanning industry generates significant amounts of solid waste and post-production wastewater, which should be managed in accordance with the principles of the circular economy. Waste is generated at various technological stages of production. This comprises mainly solid waste and leachate. A comprehensive solution to the problem of disposal of this waste is very important from economic and environmental points of view. This work presents research for a technological production line designed for the comprehensive processing of post-production residues. In the present paper, the authors present an analysis related to the possibility of processing leather flesh side (mizdra) as a substrate for methane fermentation. The study showed an increased biogas production from solid waste after enzymatic hydrolysis up to 248 Nm3/Mg. Preliminary research on the system designed for pre-treatment of sewage from the technological line is also presented. The study showed a COD reduction of more than 30%. The possibility of energy management of the solid fraction directly from the processes carried out is demonstrated.

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Section: Discussionmentioning

confidence: 99%

The Circular Economy in the Management of Waste from Leather Processing

et al. 2023

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“…Non-pressure granulation methods were developed in order to give the shavings regular, spherical shapes and produce a loose regular deposit. A disc granulator (Lodz University of Technology, Lodz, Poland) [58,59] and a vibrating disc granulator (Lodz University of Technology, Lodz, Poland) [60] were used for shavings granulation. Granulation was run until the majority of the fine-grained material was attached to the granules, ensuring that the agglomeration of granules did not occur (no coalescence phenomenon).…”

Section: Methodsmentioning

confidence: 99%

“…The developed methods of processing shavings make it possible to produce agglomerates with proper dimensions, a shape close to a sphere, and relatively high mechanical strength. It is also possible to use other waste materials, such as for example fine-grained gypsum, which together with a drying process ensures granules that are dry on the outside, that form a non-lumping deposit loose enough for the produced agglomerates to be transferred to subsequent technological operations [58,59].…”

Section: Obtaining Granules From Waste Tanning Shavingsmentioning

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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“…Diffusion method on agar plate. " 95 Principle of the method: Working samples are placed on two-layer agar plates. The lower layer contains only agar, the upper layer -agar inoculated with a bacterial suspension of a certain density.…”

Section: Microbiological Activity Of Materials Modified With Microcap...mentioning

confidence: 99%

The importance of social innovations in the knowledge-based economy in the context of footwear sector solutions

2024

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The prepared scientific monograph entitled The importance of social innovations in the knowledge-based economy in the context of footwear sector solutions is an attempt to further exemplify social innovations by identifying real links between social need and a specific good, service, method and process, in the context of solutions used in the footwear industry. Poland is one of the leading European footwear manufacturers, ranking 7th in terms of production volume in the EU, with a market share of 2.5%. In addition, strong competition is observed in the industry, which is conducive to the emergence of new innovations. The work contains theoretical and practical references to innovations in the industry, such as examples of modifications of footwear materials that have been used in business practice, and their measurable effect is to improve the comfort of using footwear. The authors refer to the environmental aspects of innovation, indicating the directions of utilization of production residues of the footwear and tanning industry, including composites, granules, and biostimulants for plants. The subject matter taken up in the monograph is an important contribution to the development of further scientific research covering the footwear industry and its importance in developing social innovations in Poland and the world. Based on the obtained research results and statistical data analysis, we attempted to outline the prospects for the development of social innovations in the footwear industry until 2050. The book can be an interesting study for practitioners and theoreticians, particularly for scientists representing disciplines such as economics and finance, management sciences, materials engineering, or entrepreneurs looking for opportunities to finance innovation in various areas.

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Comparison of Granulation Methods for Tannery Shavings

Cited by 10 publications

References 12 publications

The Circular Economy in the Management of Waste from Leather Processing

The Circular Economy in the Management of Waste from Leather Processing

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

The importance of social innovations in the knowledge-based economy in the context of footwear sector solutions

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