CONCERIA SETTEBELLO SPA - Project co-financed under Tuscany POR FESR 2014-2020
MITICO Modelling and development of smart technological plants for new tannery chemicals synthesis .
International and EU eco-toxicological standards as well as technical specifications from the biggest fashion groups are in continuous evolution, containing requirements to limit the use of hazardous products in favor of highly safe and sustainable counterparts.
The development of safer and eco-sustainable products is not heading to the same direction, in fact nowadays the most used system to tan leather is with chrome salts, making large use of strong acids to prepare hide for tanning. The environmental impact associated with chrome-tanning process is not negligible, because of the high concentration of sulphates, chlorides and unreacted Chrome III, which presence in the wastewater sludge complicates its reuse or disposal. Furthermore, the chrome-tanning process raise the concern about the formation of Cr VI in the tanned leather, in specific extreme environmental conditions during processing and storage of tanned leather.
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