Reducing the amount of tanning materials passing into wastewater in post-tanning processes


Colak S. , Ozgunay H. , Mutlu M. M. , Akyuz F.

JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION, cilt.100, ss.111-118, 2005 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 100
  • Basım Tarihi: 2005
  • Dergi Adı: JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION
  • Sayfa Sayıları: ss.111-118

Özet

Thus research was carried out in order to detect and reduce the amount of the tanning material passing from leather into the float during post-tanning processes. In the research, the possibility of reducing the amount of unbound or weakly bound tanning materials, passing from leather into wastewater during post tanning processes, by forming a complex with a second tanning material used in a new float was examined. The feature of mineral tanning materials that enables them to form a complex with vegetable tanning materials was used for this purpose. It was proved that the amount of the mineral tanning material passing into wastewater during post tanning processes was reduced to some extent with vegetable tannin application after mineral main tannage, while the amount of vegetable tanning material passing into wastewater could be reduced in significant amounts of approximately 85% with mineral tanning material application after vegetable tannage.