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SOx emissions. Due to a product mix effect, we were not able to convert SO2to a product, resulting in the increaseEmissions may form acid rain that can lead to acidification. The gases are emissions from manufacturing and combustion of fuel that we burn. The total quantity of NOx/SOx emissions from manufacturing processes discharged directly to air (e.g. after any abatement process) and the quantity of NOx/SOx emissions calculated from the use of fuels.Material efficiencyWe are maximizing our conversion of raw materials into final product by solving the root cause of the losses. This will not only reduce the waste, but will also, for example, decrease COD and the carbon related to our raw materials upstream. A variety of projects was initiated:• At Decorative Paints, a material efficiency program was started, focusing on a better conversion of raw materials into final product• Performance Coatings started a global material efficiency program for all businesses focusing on yield improvement in production. A wide variety of smaller projects has resulted in savings of more than €10 million and this will continue in 2016. Examples of this type of project are a powder fines recycling system for a continuously operating powder coatings production line, NOx and SOx emissions in kilotons2012201320142015NOx18.104.22.168.7NOx kg/ton0.100.080.080.10SOx22.214.171.124.8SOx kg/ton0.410.260.220.22Ozone depleting substances• Emissions of ozone depleting substances are at a very low level, 0.6 tons (2014: 1.8 tons). They are mainly due to Freon22 from maintenance in older air conditioning and cooling units, which are replaced when appropriate.
247AkzoNobel Report 2015 |Sustainability statements• Total waste per ton of production generated and leaving our sites was up by 5 percent to 9.0 kg/ton. The total waste volume increased to 155 kilotons, an increase of 4 percent• Incidental activities at some sites led to a one-off waste increase of 6 kilotons• Hazardous waste per ton of production decreased by 1 percent to 3.3 kg/ton • Although waste went up, many projects are in place to reduce waste. One of these involves the conversion of one of our Rotterdam waste streams (a filter aid) into a product which can now be sold to the paper industry, where it can be used without modificationTotal waste in kilotonsReusable Total kg per ton of productionNon-reusable20152014201320129.08.69.011.07975777296651188520152014201320126.96.36.199.836203720441551188.8.131.52.0reducing the size of a pump, piping and a filter-housing used for filling and using compressed air to empty mills for liquid coatings• Specialty Chemicals started a program to identify opportunities on material efficiency. Seven sites were selected and held workshops, when opportunities were identified to increase the material efficiency, with a potential saving of more than €1 millionWasteEffective waste management helps to increase raw material efficiency in our manufacturing operations, while reducing both our environmental footprint and costs.