Minimization of the environmental impact of chrome tanning: a new process with high chrome exhaustion
| Autor: | Esther Bartolí, M. D. Borras, Lluís Ollé, Anna Bacardit, Josep M. Morera |
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| Rok vydání: | 2006 |
| Předmět: |
Engineering
Salinity Environmental Engineering Health Toxicology and Mutagenesis Organoleptic Industrial Waste Chrome exhaustion Liquid waste Tanning industry Tanning wastewater Pollution prevention Chromium Compounds Residual float Environmental Chemistry Environmental impact assessment Alternative methods Waste management business.industry Public Health Environmental and Occupational Health Clean water Tanning General Medicine General Chemistry Pollution Financial assessment Environmental Pollutants Chrome tanning business Atmospheric emissions |
| Zdroj: | Repositorio Abierto de la UdL Universitad de Lleida |
| ISSN: | 0045-6535 |
| Popis: | In all tanning technology operations wastes are generated. These reach the environment as residual waters, solid and liquid waste as well as atmospheric emissions and odours. This study tests an alternative method to the traditional tanning method at an industrial level. The new method is based on tanning without float and by significantly increasing the temperature at the end of the tanning process. The properties of the leathers obtained using the two methods have been compared and the results indicate that those leathers have similar physical, chemical, and organoleptic properties. However, the differences existing from the environmental point of view are significant. It is not necessary to use clean water for this tanning. Moreover, there is a 75% reduction of the residual float, a 91% reduction of the chrome discharged, and a 94% reduction of the chlorides discharged. A financial assessment was carried out to demonstrate that the newly proposed system is 32% more economic than the traditional one. The contents of this paper are part of the “Savewatertan” CRAFT Project funded by the EU. |
| Databáze: | OpenAIRE |
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