Within the European project INCOVER, an experimental plant uses low-energy photobioreactors to cultivate micro-algae and transform wastewater into bioproducts.

This article describes this new experimental plant and the start-up stage, starting from the new design of three semi-closed horizontal photobioreactors with low energy requirements, for microalgae cultivation (30 m³ total), using agricultural runoff and urban wastewater as feedstock.

The inflow nutrients concentration is adjusted to select cyanobacteria, microalgae able to accumulate polyhydroxybutyrates, which can be used for bioplastics production. Part of the harvested biomass is used as substrate for anaerobic co-digestion (AcoD) with secondary sludge to obtain biogas. This biogas is then cleaned in an absorption column to reach methane concentration up to 99%. The digestate from the AcoD is further processed in sludge wetlands for stabilization and biofertilizer production.

On the other hand, treated water undergoes ultrafiltration and disinfection through a solar-driven process, then it is pumped through absorption materials to recover nutrients, and eventually applied in an agricultural field to grow energy crops by means of a smart irrigation system. This plant presents a sustainable approach for wastewater management, which can be seen as a resource recovery process, more than a waste treatment.

With an average of 79.5% recycled across Europe in 2016, steel for packaging is already the most recycled packaging material in Europe.

This report compiles examples of good practices from countries across the EU showcasing the varied projects, systems and processes by which steel for packaging is recycled, bringing significant reduction in emissions, resource and energy use.

Steel, a permanent material that can be infinitely recycled to make high quality products, can be easily sorted from the waste stream owing to its magnetic properties which make it the most economical packaging material to collect, sort and recycle over and over again.

Good practices in separate collection, sorting and recycling of steel for packaging contribute to improving its recycling rate, but can also serve as a guide for any stakeholder interested in improving these essential steps in a circular perspective.

The EU Circular Economy Package pushes forward the concepts of ‘recycle, repair and re-use’, as well as waste avoidance. To comply with the Package many EU countries will need a completely new waste treatment system, and many companies will need to re-think some established business models.

Two years after adopting the Circular Economy Package, the EU institutions have finally agreed on a new EU waste regulation. The paper entitled Two years later: the EU Circular Economy Package evaluates recent EU policy moves and decisions. It also analyses the status quo of Germany's circular economy efforts and compares them to those of other EU member states. Finally, some of the risks and opportunities for companies are outlined.

This paper is an update of a previously published policy paper by Dr. Adriana Neligan (2016), which discussed the Package after it was presented in late 2016.

The report Retaining value in the Swedish materials system takes a value perspective on the use and recycling of materials in a circular perspective. It analyses the use of materials in the Swedish economy in monetary terms instead of tonnes and cubic metres.

The key questions it seeks to answer include the following:

• For each 100 SEK of raw material entering the Swedish economy, how much value is retained after one use cycle?
• What are the main reasons that material value is lost?
• What measures could retain more materials value, and how much could be recovered? Which business opportunities arise as a result?

This value perspective gives a much more realistic view of how circular the Swedish materials system really is, as it captures all the downgrading effects that occur through its use of materials, in addition to the volume effects that also traditional research approaches capture. The value perspective also turns materials recycling into an industrial innovation and an economic topic, in addition to an environmental topic. To our knowledge, this is the first time anyone has value-mapped a material system in this way. 

Read more about the results and download the full report (in Swedish) here.