2 projets européens trouvés
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TERMINÉ
Saving of forest exploitation for obtaining of tanning extracts through valorisation of wine waste (GRAPE TANNINS)
Date du début: 1 sept. 2004, Date de fin: 31 déc. 2007,
Background
Deforestation is a major problem that should be restricted wherever possible. The use of renewable sources of tannin can make a contribution to reducing deforestation. Tree species such as quebracho and chestnut are currently felled to provide tannin for the leather industry.
Alternative sources of tannin exist, chiefly from a by-product (grap ...
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Participants partenaires
TERMINÉ
Aqueous degreasing of fatty sheepskins through the replacement of ethoxylated nonylphenol by biodegradable ethoxylated alcohols and further recycling (DEGREASING)
Date du début: 30 sept. 2002, Date de fin: 31 mars 2005,
Background
Degreasing is one of several steps in the hide tanning process. The amount of natural fat contained in sheepskins is significant and can have an effect on the process. Therefore, the fat has to be removed to avoid stains and dyeing irregularities. However, sheepskin degreasing results in a high degree of pollution in the tannery wastewater and, ...
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