Application of advanced technologies in managing wastes produced by leather industries—An approach toward zero waste technology

Dowlath, Mohammed Junaid Hussain; Karuppannan, Sathish Kumar; Rajan, P. S.; Khalith, S.B. Mohamed; Rajadesingu, Suriyaprakash; Arunachalam, Kantha Deivi

doi:10.1016/b978-0-12-822183-9.00007-6

Cited by 6 publications

(3 citation statements)

References 84 publications

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“…It is slowly becoming more common to produce biobased retanning and chrome exhaust aids, as well as use them in the production of leather. There have been numerous attempts to create protein-based chrome exhaust aids and retanning agents from solid tannery and slaughterhouse wastes such as raw trimmings, chrome shavings, fleshing wastes, and cow horn meal waste [ [42] , [43] , [44] ]. However, only a small number of studies have been conducted on the use of tannery hair waste and its application in the leather-processing industry.…”

Section: Introductionmentioning

confidence: 99%

Keratin hydrolysate as a chrome exhaust aid and keratin filler in leather processing: A cleaner technology approach for tannery solid waste management and leather manufacturing

Mengistu,

Angassa,

Tessema

et al. 2024

Heliyon

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Section: Introductionmentioning

confidence: 99%

Keratin hydrolysate as a chrome exhaust aid and keratin filler in leather processing: A cleaner technology approach for tannery solid waste management and leather manufacturing

Mengistu,

Angassa,

Tessema

et al. 2024

Heliyon

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“…The fish processing industry needs a lot of sodium chloride for preservation [10,11]. High salt concentrations are necessary in the tanning process used by the leather industry to strip hair and wool from animal skins [12,13]. Furthermore, the salt content of the effluent from the oil refining, extraction, and processing sectors varies significantly, often being several times higher than the salt content of saltwater [14].…”

Section: Introductionmentioning

confidence: 99%

Optimized Artificial Intelligent Model to Boost the Efficiency of Saline Wastewater Treatment Based on Hunger Games Search Algorithm and ANFIS

et al. 2023

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Chemical oxygen demand (COD) and total organic carbon (TOC) removal efficiencies of saline wastewater treatment indicate the efficiency of the electrochemical oxidation process. Therefore, the main target of this paper is to simultaneously increase COD and TOC removal efficiencies using artificial intelligence and modern optimization. Firstly, an accurate model based on ANFIS was established to simulate the electrochemical oxidation process in terms of reaction time, pH, salt concentration, and DC applied voltage. Compared with ANOVA, thanks to ANFIS modelling, the RMSE values are decreased by 84% and 86%, respectively, for COD and TOC models. Additionally, the coefficient of determination values increased by 3.26% and 7.87% for COD and TOC models, respectively. Secondly, the optimal reaction time values, pH, salt concentration, and applied voltage were determined using the hunger games search algorithm (HGSA). To prove the effectiveness of the HGSA, a comparison with a slime mold algorithm, sine cosine algorithm, and Harris’s hawks optimization was conducted. The optimal values were found at a pH of 8, a reaction time of 36.6 min, a salt concentration of 29.7 g/L, and a DC applied voltage of 9 V. Under this condition, the maximum COD and TOC removal values were 97.6% and 69.4%, respectively. The overall efficiency increased from 76.75% to 83.5% (increased by 6.75%).

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“…In tannery production, more than 80% of the solid waste of tannery is waste hide offal (WHO). − If it is directly landfilled or stacked in the open air, it will cause a lot of environmental pollution problems, first, it will produce serious soil, water, and air pollution, the second, it will waste collagen resources, and the third, it will increase the pollution treatment of enterprises’ burden. − With the increasingly serious global ecological problems such as resources and environment, the development of the leather industry is facing the enormous challenge of “sustainable development”. Therefore, “recycling of tanning waste” has become a key topic of research in the scientific and technological circles. , The WHO is wastes of shaving and trimming before leather chrome tanning, 90% of which are collagen.…”

Section: Introductionmentioning

confidence: 99%

Feasibility Study of Gelatin Preparation from the Bioinspired Collagen Aggregates by a “Two-step” Facile Degradation Method

Wang

Hou

Liu

et al. 2021

ACS Appl. Bio Mater.

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Gelatin is the putative research hotspot of natural products, but gelatin prepared by traditional alkali methods has seriously affected its applications due to the worryingly low molecular weight and poor gel strength. Herein, we took the lead to extract the distinct gelatin from a kind of bioinspired collagen aggregate (CA) by a two-step controlled degradation method. Structural analysis suggested that the CA better preserves the natural aggregated structure of nature collagen (typical D-periodic cross-striated pattern). Compared with the gelatin gelatinized by the conventional alkali method (G-Al) and commercial gelatin (CG), the gelatin (G-CA) from CA had a wide molecular weight distribution range, high transparency, high viscosity, and strong gel strength as expected. Meanwhile, the G-CA film exhibited better mechanical performance and thermostability than CG and G-Al films, and water vapor permeability was also higher in the G-CA film, whereas water solubility was higher in the CG and G-Al films. Thus, the G-CA film is more conducive to the use of food packaging or edible films, exhibiting more potential market application prospects. Notably, G-CA based on CA from waste hide offal provides a way to reuse leather waste resources and further realize green and clean production in leather industry.

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Application of advanced technologies in managing wastes produced by leather industries—An approach toward zero waste technology

Cited by 6 publications

References 84 publications

Keratin hydrolysate as a chrome exhaust aid and keratin filler in leather processing: A cleaner technology approach for tannery solid waste management and leather manufacturing

Keratin hydrolysate as a chrome exhaust aid and keratin filler in leather processing: A cleaner technology approach for tannery solid waste management and leather manufacturing

Optimized Artificial Intelligent Model to Boost the Efficiency of Saline Wastewater Treatment Based on Hunger Games Search Algorithm and ANFIS

Feasibility Study of Gelatin Preparation from the Bioinspired Collagen Aggregates by a “Two-step” Facile Degradation Method

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