ABSTRACT. Leather industry has to cope nowadays with major environmental problems because of the polluting processes. Therefore, increasing the environmental efficiency in the leather sector is the major aim of leather, auxiliary materials and equipment manufacturers. The development of new tanning agents and new technologies is required to cope with the increasingly higher environmental pressure on the current tanning materials and processes such as tanning with chromium salts. This paper presents the main results obtained in the framework of INNOVA LEATHER project. The original contribution of this project in solving the above problems has involved the use of solid titanium wastes (cuttings) resulting from the process of obtaining highly pure titanium (ingots) in the preparation of new tanning compounds intended to increase the environmental efficiency of the leather sector. Also, within the above line, the aim is to obtain wetwhite leather by an organic tanning process in order to reduce chromium in tannery effluent. Another result obtained in the project is valorization of wet white leather waste as raw material for obtaining new biodegradable auxiliaries with application in agriculture, cosmetics and chemicals. KEY WORDS: tanning agents, wet white, FOC leather, waste valorization, cosmetics, soil remediation, sustainable development MATERIALE ªI TEHNOLOGII INOVATOARE PENTRU O PRODUCÞIE DURABILÃ ÎN SECTORUL PIELÃRIE-ÎNCÃLÞÃMINTE REZUMAT. Industria de pielãrie trebuie sã facã faþã în prezent unor probleme de mediu majore datorate proceselor poluante. Prin urmare, creºterea eficienþei de mediu în sectorul de pielãrie este obiectivul major al producãtorilor de piele, materiale auxiliare ºi echipamente. Este necesarã dezvoltarea unor noi agenþi de tãbãcire ºi noi tehnologii pentru a face faþã presiunii de mediu din ce în ce mai mare asupra materialelor ºi proceselor de tãbãcire actuale, cum ar fi tãbãcirea cu sãruri de crom. Aceastã lucrare prezintã principalele rezultate obþinute în cadrul proiectului INNOVA-LEATHER. Contribuþia originalã a acestui proiect la rezolvarea problemelor menþionate mai sus a implicat utilizarea deºeurilor solide de titan (ºpan) rezultate din procesul de obþinere a titanului foarte pur (lingouri) în prepararea unor noi compuºi tananþi cu scopul de a creºte eficienþa ecologicã a sectorului de pielãrie. De asemenea, în acelaºi context, scopul a fost de a obþine piele wet-white printr-un proces de tãbãcire organicã, pentru a reduce cantitatea de crom din efluenþii din tãbãcãrie. Alte rezultate obþinute în cadrul proiectului sunt valorificarea deºeurilor de piele wet-white ca materie primã pentru obþinerea unor noi auxiliari biodegradabili cu aplicaþii în agriculturã, produse cosmetice ºi substanþe chimice. CUVINTE CHEIE: agenþi tananþi, wet white, piele fãrã crom, valorificarea deºeurilor, cosmetice, remedierea solului, dezvoltare durabilã DES MATÉRIAUX ET DES TECHNOLOGIES INNOVANTES POUR LA PRODUCTION DURABLE DANS LE SECTEUR DU CUIR ET DES CHAUSSURESRÉSUMÉ. L'industrie du cuir doit main...
Both tanned and finished leather may be damaged by fungi from Aspergillus flavus and Aspergillus niger, Trichoderma viride, Penicillium glaucom and Penicillium cyclopium, and Paecilomyces variotii species which irreversibly damage leather through the enzymes (collagenases, lipases and proteases) they produce. Fungi grow quickly under high humidity conditions and temperatures ranging between 25 and 30°C. This paper presents a comparative study regarding the fungal resistance of wet-blue (chromium-tanned) leather, wet-white leather tanned with titanium-aluminium-based compounds and wet-white leather tanned with resorcinol-oxazolidine. The study was performed according to ASTM Standard D 4576-08(2013)-Test Method for Mold Growth Resistance of Wet Blue. Conclusions of this study about mould growth resistance are drawn from the results obtained for a period of 28 days. It has been concluded by this study that no leather type is completely resistant to fungal attack. Wet-blue leather is highly susceptible to fungal attack of Aspergillus niger and Aspergillus flavus; Trichoderma viride and Mucor pusillus species do not grow on chromium-tanned wet-blue leather. Wet-white leather tanned with Ti-Al is attacked by all types of fungi studied. Wet-white leather tanned with resorcinol-oxazolidine is attacked by Aspergillus niger and Mucor pusillus, but inhibit the growth of moulds from the Aspergillus oryzae and Trichoderma viride species. This type of leather may also be damaged by moulds from the Penicillium genus. KEY WORDS: wet blue, wet white, fungi resistance STUDIU COMPARATIV PRIVIND REZISTENÞA PIEILOR WET-WHITE ªI WET-BLUE LA CREªTEREA MUCEGAIULUI REZUMAT. Atât pieile tãbãcite, cât ºi pieile finisate pot fi deteriorate de mucegaiuri din speciile Aspergillus flavus ºi Aspergillus niger, Trichoderma viride, Penicillium glaucom ºi Penicillium cyclopium ºi Paecilomyces variotii care degradeazã în mod ireversibil pielea prin enzimele (colagenaze, lipaze ºi proteaze) pe care le produc. Mucegaiurile au o creºtere rapidã în condiþii de umiditate ridicatã ºi temperaturi între 25 ºi 30°C. Prezenta lucrare prezintã un studiu comparativ privind rezistenþa la mucegaiuri a pieilor wet-blue (tãbãcite cu crom), a pieilor wet-white tãbãcite cu compuºi pe bazã de titan-aluminiu ºi a pieilor wet-white tãbãcite cu rezorcinãoxazolidinã. Studiul a fost efectuat conform standardului ASTM D 4576-08 (2013)-Metodã de testare a rezistenþei la mucegai a pieilor wet-blue. Concluziile acestui studiu s-au bazat pe rezultatele obþinute pentru o perioadã de 28 de zile. În urma acestui studiu s-a ajuns la concluzia cã niciun tip de piele nu este complet rezistent la atacul fungic. Pieile wet-blue sunt foarte sensibile la atacul mucegaiurilor Aspergillus niger ºi Aspergillus flavus; speciile Trichoderma viride ºi Mucor pusillus nu se dezvoltã pe pieile wet-blue tãbãcite cu crom. Pieile wet-white tãbãcite cu Ti-Al sunt atacate de toate tipurile de fungi luate în studiu. Pieile wet-white tãbãcite cu rezorcinã-oxazolidinã sunt atacate de Aspergillus niger ...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.