Despite all efforts to use resources efficiently and minimize waste generation, Infineon still produces waste that cannot be avoided and therefore, our subsequent objective is to ensure that the remaining waste is properly and efficiently disposed.
Nowadays, there are several methods, technically and economically feasible, of treating waste before its final disposal. In this regard, Infineon prefers the recovery methods prior to direct disposal at landfills. Among the different recovery methods, recycling is the ecologically most effective one as this option also benefit the overall CO2 emission that are released during disposal phase.
For this reason, waste is collected separately wherever possible at the point where it is produced. Some materials such as the solvent cyclopentanone are recycled, either internally or externally, whenever economically and ecologically feasible, and can therefore be re-used in the production process
Successful business cases
At our site in Villach (Austria) reusable packing is replacing the previously used cardboard packing in the transport of sawn wafers in particular for deliveries to our sites in Warstein (Germany) and Cegléd (Hungary). Reusable packing consists of transport boxes made of plastic which can be used multiple times. Currently this makes it possible to save up to 55,000 boxes and up to 110,000 pieces of foam plastic per year. Reusable packing not only means reductions in the amount of waste generated, it is also possible to transport significantly more boxes than before. Reusable packing was developed on a cross-site basis by Infineon employees working together with suppliers.
Our site in Regensburg (Germany) began delivering used cardboard boxes to an external service provider for reuse in March 2016. Moreover, the recovery of precious metals (palladium and gold) from the galvanic sludge of the Regensburg site was awarded a third place medal by the Idea Management Center of the German Institute for Idea and Innovation Management (Deutsches Institut für Ideen- und Innovationsmanagement) in Frankfurt in the “Best Sustainability Idea of 2016” competition.
Our site in Villach (Austria) uses redestillation to successfully externally recycle dimethyl formamide (DMF) in addition to the solvents propylenglycolmonomethyletheracetate (PGMEA), cyclopentanone and N-methyl-pyrrolidone (NMP). The most effective recycling applies to NMP, where the recycling rate rose from 70 percent to 90 percent.