Pyrolytic products from tannery wastes

Pyrolytic products evolved from the thermal degradation of tannery wastes h ave been studied using a Pyroprobe 1000 with a secondary reactor and a smal l furnace. Main primary and secondary products have been analyzed as a func tion of the operating temperature, using the Pyroprobe 1000 with the second ary reactor at low temperatures (primary reaction in the Pyroprobe 1000) or at high temperatures (primary reaction in the Pyroprobe 1000 and secondary reaction in the secondary reactor). In addition, some runs were carried ou t in a small furnace to consider the minor products evolved from the primar y decomposition and from the primary decomposition + secondary tar cracking . (C) 1999 Elsevier Science B.V. All rights reserved.