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NL: Water authority helps greenhouse horticulture get CO2

Dutch water authority De Dommel has reduced its CO₂ emissions by 2023. The water authority has achieved this thanks to, among other things, the construction of a plant that produces liquid CO₂. This CO₂ is used, among other things, in greenhouse horticulture. By doing so, the water authority prevents CO₂ emissions from fossil fuels in the greenhouse sector.

The water authority captures CO₂ through the production of green gas. The production of liquid CO₂ is a continuous process. When upgrading biogas to green gas, CO₂ is filtered out of the biogas and liquefied under pressure. In total, the water board managed to put 1007 tonnes of CO₂ to good use in 2023.

Delivery to greenhouse horticulture
AquaMinerals trades the liquid CO₂. The organization seeks destinations for the material streams that are generated in water treatment processes. The organization acts on behalf of the drinking water sector and water boards.

According to a spokesperson, the company established a contract with gas supplier Air Liquide, which sells the CO₂ to third parties. "Ideally the CO₂ is sold to the greenhouse horticultural sector as the water board receives a subsidy for it. However, the sector does not need CO₂ all year round. As a result, CO₂ is also supplied to other parties."

Source: Waterschap De Dommel