PROJECT DESCRIPTION
BACKGROUND
Triphenylphosphin (TPP) is employed as a process material for the Wittig-Synthesis, the method of synthesising a great variety of active substances and vitamins used throughout the EU. The active process used in the Wittig Reaction is TPP which, during the process, is transformed into inactive triphenylphosphine oxide (TPPO). TPPO has until now been treated as refuse, which then had to be incinerated. This project has transformed the TPPO back to TPP, thus solving the problem of disposal and at the same time reduced the requirement of newly synthesised TPP. Currently, 330 tonnes of TPP are being recovered from TPPO annually in this plant. Due to the work already carried out in the context of the LIFE project, the following savings have been achieved for the year 1996, and are to be expected for 1997: Savings are noted in tonnes: 1996 1997 Combustion 317 1.128 Dumpig 374 1.331 Salt Load 1.233 4.392 Waste water 2.595 9.240 Materials employed 263 936 Total 4.519 16.091