ABOUT ARC Waste management is the core of ARC. Whether it’s recyclable or residual waste, our focus is on the environment and the climate. Every day of the year, we receive residual waste from households and companies in greater Copenhagen and supply heat and electricity in return. ARC manages 17 recycling stations, and every year close to a million customers hand in garden 'waste', used construction materials and other kinds of waste for recycling. Our goal is to make waste management climate-neutral and recycle as many materials as possible.
Five municipalities own ARC in the metropolitan Copenhagen area.
Explainer on how we capture CO 2 at ARC
Scan and view explainer on the carbon capture project at ARC
Ho w it works To capture CO 2 , the cleaned flue gas is led into a wet filter. When removing the CO 2 , the flue gas is led into a high tower (an absorber). The 40 degrees Celsius hot flue gas is moving towards the top of the tower while a liquid with alkaline amines is streaming down from above and is washing the CO 2 out of the flue gas. The amines are chemically binding the CO 2 molecules. The liquid with the absorbed CO 2 is lead to another high tower (a desorber). Here, the liquid is heated to 105 degrees Celsius to release the CO 2 molecules while the liquid with the alkaline amines goes back to the first tower and captures CO 2 again.
Dan Jørgensen and Lord Mayor of Copenhagen, Lars Weiss inaugurated a pilot unit for carbon capture at ARC.
The pilot unit is the first step towards carbon capture at ARC. It provides a unique opportunity to test the technology which can bring Denmark at the global forefront of carbon capture. During the 2nd half of 2021, ARC, DTU, Pentair, and Rambøll will be testing and maturing the technology, including the solvents used for capturing CO 2 . The goal is to optimize the capture technology to capture CO 2 most efficiently and cost- effectively.
Smoke without CO 2
This means that the liquid with alkaline amines can be reused.
The amine absorption technology is well known and has been used for decades. But it’s always been very energy-intensive and expensive. The project at ARC aims to reduce energy consumption and overall cost level by optimizing the energy flows inside the carbon capture unit, reharvesting the residual heat from the capture process, and using it for district heating. Carbon capturewithnet zero energy consumption ARC is producing electricity, some of which can be used for the carbon
Captured CO 2
Alkaline amines
Fluegas with CO 2
Captured CO 2
Absorber
Desorber
District heating
Carbon capture with net zero energy consumption.
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