Efficiently Removing Carbon Dioxide from the Atmosphere with Bioenergy

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January 17, 2023

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(Bioenergy Insight) Ländwarme, a leading biomethane supplier, service provider and trader in Europe, told Bioenergy Insight about the importance of Carbon Capture and Storage. “On our way to halt climate change, negative emissions are a crucial component. Therefore, we cannot forgo technologies such as Carbon Capture and Storage (CCS) — used most efficiently in combination with bioenergy in order to remove CO2 from the atmosphere.

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When producing biomethane, CO2 separation is already part of the process, and storage only one small step further.

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During plant growth CO2 is absorbed through photosynthesis. When the biogas is purified to biomethane, that CO2 is captured.

“The captured carbon dioxide can either be used using Carpbon Capture and Usage (CCU) or permanently stored. Industrial processes have a demand for CO2, for example in beverage production, for dry ice, fire extinguishers or in chemical applications.

“Suitable storage sites include depleted natural gas or oil fields as well as other underground rock formations. Our estimations based on studies on biomethane potential show that in the EU, 150 million tons of CO2 of negative emissions per year are possible with CCS at biomethane plants. Carbon capture at 10,000 biogas upgrading plants in Europe could avoid around 15% of all European emissions, taking into account avoided methane emissions through fermenting manure and replacing natural gas for example. Initial CCS projects in Europe are already underway.

“In addition to that, biomethane also contributes to solving Europe’s methane emissions problem by using, ie, liquid manure as feedstock. If the methane content of manure was released on the field, it would be at least 25 times more harmful to the climate than CO2. Further processing into biomethane prevents this. READ MORE

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