Nothing goes to waste – everything is transformed: bringing new materials to life

Transforming waste into new resources preserves limited natural resources and minimises the pollution associated with the extraction of raw materials. To bring new materials to life, SUEZ is constantly innovating to develop new techniques for transforming waste into high-quality materials and to explore new opportunities for their use.
Brine Valorization

Brine Valorization, the circular recovery of critical raw materials from desalinated seawater

95% of Earth’s water is in seas and oceans. Desalination is an effective solution which is already used to address the risk of drinking water scarcity in many countries. It guarantees water supply to regions, either permanently or as a back-up solution in the event of droughts. SUEZ has several references worldwide in this field and nowadays, desalination plants’ rejects can also  be reused.

The Brine Valorization solution developed by SUEZ makes it possible to efficiently produce chemicals such as hydrochloric acid, sodium hydroxide or magnesium from desalination waste. In the future, other materials such as lithium may be extracted.

Patented by SUEZ, the solution is entering. In the latest development stage and it is expected to be commercially available in 2024.
+ sustainable
Brine valorization now makes it possible to develop more sustainable desalination projects by reducing discharges into the natural environment.

Phosphogreen™, producing fertilisers from our wastewater 

Phosphorus plays an essential role in agriculture. Used as a fertiliser, however, this precious resource is running out on a global scale, at a time when population food needs are growing across the world. In order to preserve this resource, one approach developed by SUEZ experts is to repurpose it, by recovering it from wastewater and recycling it.

This is the ambition of Phosphogreen™, an innovative circular solution. Applied in the downstream phase of methanisation, the process involves injecting magnesium chloride onto the sludge from treatment plants to obtain the crystallisation of struvite, a mineral composed of phosphate, ammonium and magnesium. It is then extracted at the bottom of the reactor and washed, before being drained and subsequently marketed.

Biosourced fertiliser
Phosphogreen™ enables: Biosourced fertiliser rich in phosphorus fertiliser for agriculture to be produced / Greenhouse gas emissions associated with phosphate extraction and production to be reduced, by providing a second life to the resource / The risk of pollution in watercourses and aquatic ecosystems to be reduced.

Fibers-To-Sugar, transforming paper and cardboard into biofuel

Many manufacturers need to cut back on their use of fossil materials and energies by replacing them with renewable resources. By 2050, Europe should have achieved carbon neutrality, with an intermediate target of a 55% reduction in greenhouse gases emissions in 2030.
In response to the need for second-generation sugar (i.e. from non-food biomass) for the production of ethanol or other biomolecules, SUEZ has developed the Fibers-To-Sugar solution in its BioResourceLab research centre which is part of the International Water and Environmental Research Centre (Centre International de Recherche sur l’Eau et l’Environnement — CIRSEE).

This innovation involves setting up an alternative to food sugar by developing a new recovery pathway for low-quality paper and cardboard waste, which is currently inadequately recycled.
10 million tonnes
Direct Europe's 10 million tonnes of low-quality paper or cardboard waste towards an alternative waste recovery process.
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