Sustainability report 2019
Contributes to: The multi-oil site in Karlshamn, Sweden is the largest and most complicated site in the AAK Group that generates a number of sidestreams of different character. AAK continuously work not only to reduce WKHVH VLGHVWUHDPV EXW DOVR WR ¿QG WKH EHVW RXWOHWV IRU WKHP ERWK IURP D ¿QDQFLDO DQG D VXVWDLQDELOLW\ perspective. 7KH ¿UVW RSWLRQ IRU VLGHVWUHDPV IURP RXU IRRG RLO production, which for different reasons can no longer be used as foods, is to turn them into products for animal feed or to raw materials for our oleochemical fatty acid production. Indirectly, our sidestreams (byproducts) are used to increase dairy cow milk yields, to produce candles, fabric softeners and rubber for tyres. Unfortunately, not all of our byproducts are suitable to be used as feed materials or raw materials for oleochemical production. The fat and oil fractions, which do not meet the feed safety or quality criteria for these applications, are instead used to produce renewable HQHUJ\ )RU H[DPSOH ZH FROOHFW IDW IURP WKH ZDVWHZDWHU treatment plant, the distillation residues from the oleo- chemical production, and fatty acid condensates from the deodorization and turn them into a valuable bio-fuel, so called bio-oil. The facility in Karlshamn has several boilers which supply the site with steam and occasionally electricity. Two of these boilers have the capability to use fat as fuel. AAK Sweden Sidestreams become renewable energy With a thermal heating value that rivals fossil fuel oils, bio-oil is a valuable option in our energy mix. The bio-oil that is not used in our own boilers is sold to industrial plants which have their own boilers or to power plants in the region. There are also boilers in Karlshamn that use wood pellets as fuel source. Ashes from combustion of wooden pellets are used as a fertilizer in forestry. Thanks to this, micronutrients are returned to the forest. ,Q DGGLWLRQ DFLGL¿FDWLRQ RI VRLO DQG ZDWHUFRXUVHV LV counteracted. Other byproducts used for renewable energy gene- ration is for example our rapeseed screenings and residues from our glycerol production. The rapeseed VFUHHQLQJV FRQVLVW RI GU\ ¿EURXV RUJDQLF PDWWHU (from the rapeseed plant) that are removed before the rapeseed enters our crushing plant. The residues from our glycerol production is a mix of glycerol and fat which LV UHPRYHG E\ GLVWLOODWLRQ LQ WKH UH¿QLQJ SURFHVV %RWK the rapeseed screenings and the glycerol residues are excellent substrates for biogas producing bacteria and are therefore sold to biogas plants in Sweden and Denmark. )LQGLQJ WKH EHVW SRVVLEOH XVHV IRU RXU VLGHVWUHDPV LV QRW RQO\ LPSRUWDQW IURP D ¿QDQFLDO SHUVSHFWLYH EXW DOVR an important step to creating a circular economy. 49
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