A comprehensive evaluation of physical and environmental performances for wet-white leather manufacture
| Autor: | Wei Lin, Rita Puig, Jiabo Shi, Jun Sang |
|---|---|
| Přispěvatelé: | Escola d'Enginyeria d'Igualada, Universitat Politècnica de Catalunya. GIR - GIR Ambiental |
| Rok vydání: | 2016 |
| Předmět: |
Human toxicity
Strategy and Management Combination tannage Formaldehyde chemistry.chemical_element 010501 environmental sciences 01 natural sciences Industrial and Manufacturing Engineering Matrix (chemical analysis) Life cycle assessment chemistry.chemical_compound Laponite nanoclay Tannic acid Life-cycle assessment 0505 law 0105 earth and related environmental sciences General Environmental Science Shrinkage Waste management Renewable Energy Sustainability and the Environment 05 social sciences Tanning Pulp and paper industry Adoberia Wet-white leather Leather chemistry Cuir 050501 criminology Enginyeria tèxtil::Fabricació tèxtil [Àrees temàtiques de la UPC] Tannins Carbon Global-warming potential |
| Zdroj: | Recercat. Dipósit de la Recerca de Catalunya instname UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| ISSN: | 0959-6526 |
| DOI: | 10.1016/j.jclepro.2016.08.120 |
| Popis: | This paper presents the comprehensive evaluation results of physical and environmental performances for a novel wet-white (chrome-free) leather manufacturing. The tanning process is optimized as 15 wt% tannic acid (TA) combination with 4 wt% Laponite nanoclay, giving the leather with shrinkage temperature (Ts) above 86 °C. Inductively coupled plasma-atomic emission spectrometry (ICP-AES) measurements indicate that Laponite can be evenly and tightly bound within the leather matrix, which is further confirmed by scanning electron microscopy and energy dispersive X-ray (SEM-EDX) spectroscopy analysis. The resultant wet-white leathers have reasonable good physical properties that can meet the standard requirements for furniture leather without containing hazardous Cr(VI) and formaldehyde. Further life cycle assessment (LCA) studies shows that tanning process is the main contributor to environmental impact categories in the wet-white tanning process, and tannic acid is the most significant substance factor. Compared to conventional chrome tanning, the wet-white tanning process exhibits much lower abiotic depletion potential (ADP), and reduced global warming potential (GWP) and human toxicity potential (HTP) impacts due to the nature of vegetable tanning; whereas, GWP excluding biogenic carbon and energy consumption are higher owing to prolonged run time. |
| Databáze: | OpenAIRE |
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