The Finnish city of Lahti has been pioneering industrial symbiosis at the Kujala Waste Treatment Centre where all sorts of waste are reused. Several companies have established interconnected material flows, thus making one’s residues another one’s raw materials.
NAFIGATE’s Hydal Biotechnology uses waste cooking oil to produce a fully biodegradable and biocompatible PHA biopolymer named Hydal (Polyhydroxyalcanoates). This is the first biopolymer of its kind being produced on an industrial scale at an affordable price.
SK-Tex takes old clothing and turns it into products that can be used in cars, furniture and buildings. The company has been in operation since 1998, beginning as a textile raw materials trading company before developing into a recycling company.
Orange Fiber has closed the loop on orange waste by patenting a technique to turn the cellulose fibre in citrus waste into a fabric which is suitable for the fashion industry.
Kierrätyskeskus is a network of secondhand shops in the Helsinki area. As well as selling on donated items, they repair electrical goods and offer training sessions on the circular economy.
Examining the role of selective waste collection in a CE by focusing on two different waste streams (plastics and bio-waste) while also granting consideration to the future of highly selective collection streams.