What: OCAP
Where: Schiedam
Who: Linde Gas Benelux and Volker Wessels
Since: 2005
Source: OCAP


Organic Carbondioxide for Assimilation of Plants

CO2 (carbon dioxide) is a non-toxic, non-flammable and non-explosive gas that flows freely in the air. Humans and animals breathe the air containing oxygen and CO2 constantly in. And exhale air with less oxygen and more CO2. Our body converts oxygen into CO2, as occurs in all combustion processes. Plants do just the opposite during the day. They convert the CO2 in the air into oxygen.

By giving the plants more CO2, they’ll grow better and faster. Growers like to take advantage of this in their greenhouses. They therefore bring extra CO2 in the greenhouse. That extra CO2 is often obtained by burning the boiler or by heating the greenhouse in summer. However, CO2 is also the well-known gas, which is responsible for Global Warming. That is why the world is working hard to reduce CO2 emissions. Needless burning natural gas is thus undesirable.

Since 2005, OCAP therefore captures CO2 emitted by industrial processes which lead down to to horticultural greenhouses. By using this CO2, instead of producing their own by burning natural gas, the greenhouses save energy. It also provides the grower with an alternative to fossil fuel (which is used for both heating during the cold season and for producing CO2), using instead a combination of CO2 delivery and renewable energy sources, such as geothermal energy and (industrial) waste heat.

This project thus realizes an important environmental benefit. OCAP delivers almost 400 kiloton of CO2 from the Shell refinery Pernis to approximately 580 greenhouses. OCAP has a CO2 pipeline running through the port of Rotterdam. The greenhouses jointly ensure that there is an annual 115 million cubic meters of natural gas used less. What saves the emission of 205,000 tonnes of CO2.