Comparative characterization of leather from different tanning processes as a contribution for a sustainable development of the leather industry

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 27, 2025

Leather is a fully biobased material (100% biodegradable organic material, with collagen as the main constituent), derived from food industry byproducts (animal skin butchery), which represents an excellence for Italian (in last years production value reached 4.6 billion euros and export of 3.2 euros) highly sustainable material. However, its still strongly handicraft, traditional unfortunately based on employment toxic chemicals, such chromium glutaraldehyde. A deep knowledge tanning process specific features leather coming different processing routes crucial design development innovation in field more knowledge-based production. In this contest, impact surface reactivity plays role. present research well established characterizations (optical microscopy, shrinkage temperature, wettability, metal content, infrared spectroscopy X-ray diffraction) new unconventional methods (surface topography, instrumented indentation zeta potential electrokinetic measurements) were applied optimized characterization samples (e.g. Chrome Glutaraldehyde) innovative vegetable, carbamoyl sulphate, starch, aluminum, zeolite, triazine Olive Mill Wastewaters -OMW) processes. The suitability protocol in-depth investigation comparison has been demonstrated highlighting applicability field.

Language: Английский

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Polysaccharides for sustainable leather production: a review

Environmental Chemistry Letters, Journal Year: 2024, Volume and Issue: 22(5), P. 2553 - 2572

Published: May 14, 2024

Language: Английский

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Greener Solvent Assistant Dyeing: Harnessing Ionic Liquids for Eco-Friendly Tone-in-Tone Dyeing on All Leather Types

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(27), P. 10102 - 10117

Published: May 17, 2024

In the leather dyeing process, anionic dyes are more suitable for coloring chrome-tanned compared to other tanning systems, especially organic tanning. Dye penetration and surface fixation depend on charge of nature substrate, which leads poor dye bath exhaustion subpar fastness characteristics. Therefore, in this study, ionic liquid (imidazolium dihydrogen phosphate (IDP)) pretreatment was employed due its superior ability enhance dispersion make various types tanned leather, including chrome, vegetable, aluminum-silica Unlike conventional methods, alters hydration layer, creates an imbalance, generates extra functional sites, causing adhere effectively leather. Molecular dynamics (MD) simulations collagen different proportions aqueous medium show that collagen:IL:dye ratio 1.0:0.5:0.5 is illustrated be optimum terms performance process because better dispersibility diffusion presence liquid. Compared with demonstrated enhanced uptake (5–24%) uniform regardless substrate. The minimal use mitigates negative effects caused by auxiliaries offers potential reusability subsequent processes. Furthermore, a greener metrics evaluation (including ERF─excess reactant factor, RME─reaction mass efficiency, EF─environmental WWI─water waste intensity) confirms promotes sustainable manner than system. EcoScale measurements also reveal innovative system utilizing addresses environmental footprint associated traditional

Language: Английский

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Collagen modification and coordination reaction of diketone dicarboxylic acid as high exhaustion chromium tanning agent: Experimental and DFT simulations

Process Safety and Environmental Protection, Journal Year: 2025, Volume and Issue: unknown, P. 107053 - 107053

Published: March 1, 2025

Language: Английский

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A comprehensive review on enzymatic dehairing of animal skin using soybean enzymes: a novel approach for a cleaner leather processing operation

Biomass Conversion and Biorefinery, Journal Year: 2024, Volume and Issue: unknown

Published: June 12, 2024

Language: Английский

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Discarded enoki mushroom root-derived multifunctional chrome-free chitosan-based tanning agent for eco-leathers manufacturing: Tanning-dyeing, non-acid soaking, and non-basifying

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 275, P. 133394 - 133394

Published: June 30, 2024

Language: Английский

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Multifunctional amphoteric heteropolymer for chromium free sustainable leather process

Journal of Applied Polymer Science, Journal Year: 2024, Volume and Issue: 141(29)

Published: May 7, 2024

Abstract The post‐tanning process of leather making involves the large quantities auxiliary chemicals to enhance functionalities leather. Hence, developing multifunctional polymers are essential reduce pollution load and sustainability. Herein, we report synthesis retanning fatliquoring agent using a hydroxyethyl methacrylate (HEMA) monomer by modifying hydroxyl group carboxyl long‐chain hydrocarbon along with quaternary ammonium monomer. resulting polymer has been subsequently used in tanning process. influence increases metal uptake aluminum (twofold) zirconium (1.5‐fold) agent, hydrothermal stability polymer‐treated leathers is 74 81°C for tanning, respectively. experimental showed uniform pore size distribution better organoleptic characteristics than control. Introducing increased dye exhaustion up 97%. anti‐bacterial studies show effective against gram‐positive species due electrostatic interaction. biochemical analysis experiment shows higher biodegradability (0.62). Thus, present study opens new avenue sustainable replacement conventional chemicals.

Language: Английский

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Preparation and properties of electromagnetic shielding leather based on magnetic MgFeCr-LDHs

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(5), P. 113394 - 113394

Published: June 21, 2024

Language: Английский

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Environmental performance of three innovative leather production processes using less chromium and water

Sustainable Production and Consumption, Journal Year: 2024, Volume and Issue: 50, P. 177 - 190

Published: Aug. 2, 2024

Leather production contributes positively to economic developments but can create severe environmental impacts, due the associated consumptions of water and chemicals. The substance main concern is basic chromium sulphate, widely used as tanning agent, which provides high-technical performance finished leather. This study quantifies sustainability a conventional leather process those three innovative processes, characterised by limited water. Standardised life cycle assessments were implemented, with reference chains starting from pickled skins until two leathers (for goods footwear), having same technical aesthetic characteristics process. processes adopt rotating drums or substitute them spray nozzles aerosol rooms, require specific pre-treatment that includes de-pickling, drying stabilisation input skins. Tests at industrial scale (or pilot for solution rooms) indicate new strongly reduce impacts in terms Human toxicity-cancer, Ecotoxicity freshwater Resource use-minerals metals (up 57 %, 29 % 48 respectively) even though they imply an increase Climate Change 51 %). Losses wastewater solid waste are reduced >33 g/m2finished leather, process, about 8 5 1 processes. proposed increases (and less chromium) utilising rooms. A great improving be obtained just "simple" drum solution, able toxicity-cancer potential up 53 42 %.

Language: Английский

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Ultrasound-Assisted Synthesis of β-Cyclodextrin/Hydroxyapatite Composites as a Green and Safe Additive for Enhancing Leather Properties

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: unknown, P. 141299 - 141299

Published: Dec. 1, 2024

Language: Английский

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