Direct air capture is a technology to capture CO2 from the atmosphere. The CO2 can be permanently stored in deep geological formations or used in the production of fuels, chemicals, building materials and other products containing CO2.

Background:

Direct Air Capture (DAC) technology with CO2 sequestration has potential advantages over other negative emission technologies (NET) like afforestation and bio energy with CCS, such as lower land and water footprint and the possibility of locating plants close to suitable storage or utilisation sites, eliminating the need for long-distance CO2 transport.

DAC is the most suitable technology to reduce emissions from distributed emission sources like the transport sector which is Australia’s third largest source of greenhouse gas emissions (96 Mt CO2-e per year) and aviation sector that emits around 9.99 Mt of CO2-e per year. Without DAC, combined with carbon storage, the target of net zero emission is hard to achieve.

There are currently 15 direct air capture plants operating worldwide, capturing more than 9 000 tCO2/year. In the Sustainable Development Scenario (SDS), direct air capture is scaled up to capture almost 10 MtCO2/year by 2030. This is within reach but will require several more large-scale demonstrations to refine the technology and reduce capture costs. It is estimated that 0.5–5 Gt CO2/yr is a sustainable global removal potential for DAC in 2050.

 

 

 

The OITC has potential to become a first of its kind DAC-CCS pilot test site

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Why test DAC at CO2CRC’s Otway International Test Centre (OITC)?

The OITC is one of the most advanced field scale CCUS research sites globally with a state-of-the-art infrastructure and facilities for CO2 capture, COsequestration, monitoring and validation. OITC is dedicated to delivering innovative research, products and services designed to improve the cost-effectiveness and demonstrate the environmental integrity of CCUS technologies and methodologies.

The OITC provides the required infrastructure for the field testing of DAC technology providers. The OITC has seven purpose-drilled wells for permanently monitoring the stored CO2. The OITC has maintained an operational safety record of zero lost time injury for more than 14 years making it ideally suited for DAC technology demonstration and development with geological storage.

 

Key benefits:

  • The OITC infrastructure has been proven for a variety of research and demonstration projects and is ideal for DAC-CCUS pilot testing and demonstrating.
  • Highly instrumented subsurface facilities; CO2 injection can commence within 6-9 months of project startup.
  • 1st of its kind DAC-CCS (end to end) pilot test for CO2 storage in a porous reservoir.
  • Full operational support tailored to customer requirements.
  • OITC can support multiple DAC units with fully flexible operation, can be tailored for either short or long-term operation.
  • Potential to support continuous DAC-CCU R&D in the future to increase carbon utilisation besides sequestration.
  • Optimising DAC and CO2 sequestration operation to reduce the cost of DAC-CCS

 

 

 

Direct air capture
Direct Air Capture demonstration with geological carbon storage and monitoring at the Otway International Test Centre, Australia.
Direct Air Capture (DAC) for carbon abatement through CCS-Sequestration at CO2CRC’s Otway International Test Centre (OITC)

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