Utilization of a leather industry waste

Simeonova, L.; Далев, П.

doi:10.1016/s0956-053x(97)00020-2

Cited by 23 publications

(12 citation statements)

References 1 publication

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“…The causative factors for the pollution are a) wastes from skin (Hu et al, 20011, Kanagaraj et al, 2006, Simeonova andDalev, 1996), and b) residual chemicals present in wastewater (UNIDO, 2000).…”

Section: Introductionmentioning

confidence: 99%

Alternative carrier medium for sustainable leather manufacturing – a review and perspective

Sathish

Madhan

Sreeram

et al. 2016

Journal of Cleaner Production

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Section: Introductionmentioning

confidence: 99%

Alternative carrier medium for sustainable leather manufacturing – a review and perspective

Sathish

Madhan

Sreeram

et al. 2016

Journal of Cleaner Production

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“…Both solid as well as liquid wastes from tannery are currently not utilized and lead to pollution problems. Processing about 100 tonnes of hides daily produces about 30 tonnes of solid waste each day and creates serious ecological problems (Simeonova and Dalev 1997). The tanneries are confronted with two options for disposal of solid wastes they generate viz.…”

Section: Introductionmentioning

confidence: 99%

In vitro antioxidant and antibacterial properties of hydrolysed proteins of delimed tannery fleshings: comparison of acid hydrolysis and fermentation methods

et al. 2010

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Proteins in delimed tannery fleshings were fermentatively hydrolysed using Enterococcus faecium NCIM5335 and also hydrolysed using mild organic acids (formic acid and propionic acid). The liquor portion containing hydrolysed proteins was spray dried, in both the cases, to obtain a powder. The spray dried powder was evaluated for in vitro antioxidant activities with respect to scavenging different free radicals and antibacterial properties against nine different pathogens. Fermentation and acid hydrolysates scavenged 83 and 75.3% of 2,2-azino-bis-3-ethyl-benzthiazoline-6-sulphonic acid (ABTS) radicals, respectively, at a protein concentration of 0.25 mg. Further, fermentation hydrolysate showed higher 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity of 59% as compared to 56% scavenging by acid hydrolysate at a protein concentration of 5 mg. Acid hydrolysate exhibited lesser (82.3%) peroxy radical scavenging compared to hydrolysate from fermentation (88.2%) at a protein concentration of 10 mg. However, acid hydrolysate exhibited higher (89.2%) superoxide anion scavenging while its fermentation counterpart showed lower activity (85.4%) at 2.5 mg hydrolysate protein. Well as superoxide anion scavenging properties. All the in vitro antioxidant properties exhibited dose dependency. Fermentation hydrolysate exhibited maximum antagonistic activity against Salmonella typhi FB231, from among host of pathogens evaluated. Both the hydrolysates have potential to be ingredients in animal feeds and can help reduce oxidative stress in the animals.

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“…Hydrolysis with alkaline proteinase results in fat (4%-12% of the total mass of the initial material), collagen hydrolysate (5%-10%), and protein concentrate (1%-3% yield). Purification of the collagen hydrolysate fraction into edible gelatin has been carried out (Simeonova and Dalev, 1996).…”

Section: Fleshingsmentioning

confidence: 99%

Tannery Solid Waste to Treat Toxic Liquid Wastes: A New Holistic Paradigm

Fathima

Rao

Nair

2012

Environmental Engineering Science

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Leather processing involves conversion of putrescible hide/skin into nonputrescible leather. This results in generation of both solid and liquid wastes. Solid waste disposal is increasingly becoming a huge challenge to tanners due to paucity of landfill sites and strict environmental legislations worldwide. Hence, finding a holistic solution to the tannery solid waste disposal problem is a challenge for researchers. In this context, use of solid waste for treatment of toxic pollutants in liquid waste is emerging as a new paradigm for solid waste generated from tanneries. Tannery solid wastes such as fleshings, trimmings, and shavings are proteinous wastes. Hence, they contain functional groups that can complex with many metals and organic molecules such as dyes. This article presents an overview of the solid wastes emanating from tanneries and the various disposal methods practiced with special emphasis on the utilization of these wastes to treat toxic liquid pollutants.

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Utilization of a leather industry waste

Cited by 23 publications

References 1 publication

Alternative carrier medium for sustainable leather manufacturing – a review and perspective

Alternative carrier medium for sustainable leather manufacturing – a review and perspective

In vitro antioxidant and antibacterial properties of hydrolysed proteins of delimed tannery fleshings: comparison of acid hydrolysis and fermentation methods

Tannery Solid Waste to Treat Toxic Liquid Wastes: A New Holistic Paradigm

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