Beneficial use of animal hides for abattoir and tannery waste management: a review of unconventional, innovative, and sustainable approaches

This study aimed to compare the resistance of the Oryctolagus cuniculus L. (rabbit) and Oreochromis niloticus L. (Nile tilapia) skins, as well as to observe the design of the flower of these skins and the morphology of the dermis. Tilapia and rabbit skins were placed inside the same equipment (tannery machine) for the chromium salt tanning process. The flower design of the fish leather distinguishes it from the rabbit leather, the latter being constituted by the opening of the hair follicles and pores, while the fish leather is constituted by the presence of protective lamellae and insertion of the scales. The dermis of rabbit skin consists of thick bundles of collagen fibers arranged in all directions, which differs from the morphology observed in the dermis of fish skin. However, in the Nile tilapia skin dermis, overlapping and parallel layers of longitudinal collagen fiber bundles are observed, these layers are interspersed with fiber bundles crossing the sking surface (transversely), tying the fibers together and providing greater strength, which can be proven by the strength test. The fish leathers, despite having less thickness (1.0 mm), demonstrated significantly greater tensile strength (13.52 ± 1.86 N mm−2) and tear strength (53.85 ± 6.66 N mm−2) than rabbit leathers, that is, (8.98 ± 2.67 N mm−2) and (24.25 ± 4.34 N mm−2). However, rabbit leather demonstrated higher elasticity (109.97 ± 13.52%) compared to Nile tilapia leather (78.97 ± 8.40%). It can be concluded that although the rabbit leather is thicker due to the histological architecture of the dermis (thick bundles of collagen fibers arranged in all directions with no pattern of organization of collagen fibers), it shows less resistance than Nile tilapia leather, which demonstrates an organization of overlapping and parallel layers and intercalating collagen fiber bundles transversally to the surface, functioning as tendons for the swimming process. It is recommended to use a piece of fabric (lining) together with the fleshy side of the rabbit leather, to increase resistance when used in clothing and footwear, as these products require greater tensile strength. Thus, it minimizes this restriction for the use of rabbit leather in the aforementioned purposes.

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“…Another factor that, according to Franco [27] and Patel et al [28], can interfere with leather thickness is the tanning process time.…”

Section: Comparison Of the Strength Quality Of Rabbit And Nile Tilapi...mentioning

confidence: 99%

Characterization and Strength Quality of the Oryctolagus cuniculus Leather Compared to Oreochromis niloticus Leather

Oliveira

Gasparino

Castilha

et al. 2022

The Scientific World Journal

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“…Other processes such as composting could be used to produce soil improvers and soil fertilisers and pyrolysis for the production of bio-oil, biochar, and syngas [3], [37], [38]. Gelatine, collagen, and other valuable materials could also be extracted from slaughterhouse derivatives, including the hides and skins of fallen or slaughtered animals [39], [40].…”

Section: Discussionmentioning

confidence: 99%

A Circular Economy Investigation Into Treatment Technologies Available for the Disposal of Slaughterhouse Derivatives

Zyl

Eeden

2022

SAJIE

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Two major problems challenge the world of food today: the constantly growing demand for meat products and dealing with the volumes of waste produced by the industry. The volume of slaughterhouse derivatives produced when generating meat products threatens the health of humans and the environment. The need to feed a growing population sustainably and to find more sustainable and circular alternative treatment technologies for handling and disposing of slaughtering derivatives undoubtedly creates opportunities for several role players. A comprehensive bibliometric analysis was undertaken to identify such processes, considering the different slaughterhouse derivatives generated by red meat and poultry slaughterhouse facilities. The literature search and refinement process identified 130 scientific documents for analysis. The results highlight an increase in the scientific literature on the sustainable recovery of slaughterhouse derivatives, and a diverse range of available treatment technologies to dispose of such derivatives.

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“…The tanning process goes through several stages where water consumption is very high since approximately 90% of waste is rejected in the form of harmful effluents (Kanagaraj et al, 2008). It should be noted that this waste can reach 30 to 34 m3 when processing skins (Patel et al, 2022).…”

Section: -Literature Reviewmentioning

confidence: 99%

The leather sector diagnosis: what problems? What solutions? : A Moroccan case study

Saad,

Otman

2024

Preprint

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The leather sector remains one of the sectors that encounters a multitude of problems on an international scale, particularly in Morocco. Therefore, we carried out a literature review through which we were able to identify the major problems found within the leather sector. After that, we conducted a case study on the Chouara tannery in the fez Meknes region where we studied the problems found within the sector by using the 5M and SWOT methods as well as the proposal of certain improvement actions with a view to revitalizing the sector. The novelty of our work lies in the proposal of certain functionalities that could play the role of product lifecycle management (PLM) within the sector, such as life management, complaint management and cost management since the notion of PLM is absent within traditional tanneries. In addition, we propose integrating ecological PLM to limit the amount of garbage generated during the execution of tasks.

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Beneficial use of animal hides for abattoir and tannery waste management: a review of unconventional, innovative, and sustainable approaches

Cited by 16 publications

References 62 publications

Characterization and Strength Quality of the Oryctolagus cuniculus Leather Compared to Oreochromis niloticus Leather

Characterization and Strength Quality of the Oryctolagus cuniculus Leather Compared to Oreochromis niloticus Leather

A Circular Economy Investigation Into Treatment Technologies Available for the Disposal of Slaughterhouse Derivatives

The leather sector diagnosis: what problems? What solutions? : A Moroccan case study

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