// Direct Air Capture

Technology

Direct Air Capture of carbon dioxide is a proven means for companies to reach their net-zero goals, by using a carbon removal mechanism or by switching to more sustainable operations by using fossil-free CO₂ as a feedstock.

Our carbon removal technology is energy-efficient, and that’s how we can provide greenhouses with cheaper CO₂ than they’re paying now. We are determined to make a breakthrough in the field of Direct Air Capture of CO₂.

Carbominer's Direct Air Capture Uniit for CO2 capture
// Direct Air Capture

Process

Carbominer’s capture efficiency relies on several engineering innovations. Our tech uses a combination of dry and wet approaches at the capture stage and electrochemistry-based pH-swing for CO₂ release at the regeneration stage. 

Carbominer’s main competitive advantages are the transportability of the capturing modules and a built-in ability to harness intermittent renewable energy.

// COST REDUCTION

Future Focus

We believe that the key element on the path to gigaton scale capture is the lowest possible cost per CO₂ ton.

To ensure further cost reductions, we have introduced a passive air contactor to support the work of fans in our capturing units. This innovation is a wind capture tower, and in windy enough locations it could potentially reduce fans’ power consumption to zero.

Another important feature of the tower is dust mitigation, as the amount of dust particles at height is times lower than at the ground level.

Wind capture tower by Carbominer
Wet & Dry Capture

Combination of the two well-known capture technologies in one process.

Electrochemistry

The pH-swing-based regeneration allows us using intermittent renewable energy.

Passive air contactor

We developed a wind capture tower for obtaining a passive air stream for DAC.

Frequently Asked Questions

What is Direct Air Capture Technology?

Carbon dioxide direct air capture (DAC) is a rather novel concept, only suggested in 1999 and still in development. The technology involves capturing carbon dioxide directly from the air, unlike the conventional CCS technology, which captures CO₂ from industrial emissions.

Several industrial-scale pilot DAC systems have been successfully deployed in Europe and the USA. However, large-scale DAC implementation across various industries and geographies is likely to get policy incentives, as it is not yet profitable on its own.

How is Carbominer technology different?

The effectiveness of our DAC technology is based on the successful combination of several engineering innovations.

There are two well-known DAC approaches:

  • The “Dry” approach, based on adsorption, needs lower capital expenditures, but is energy-consuming during regeneration and provides a mix of air and CO2 as output in most cases.
  • The “Wet” approach, based on absorption into a working solution, requires more capital expenditures, but may need less energy during regeneration, and provides close to pure CO2 as an output.

Our technology uses a mix of dry and wet CO2 capture approaches using ion-exchange fiber sorbent at the capture stage and electrochemistry-based pH-swing at the regeneration stage. As a result, we are releasing almost pure CO2 as output, while keeping our regeneration energy budget low.

In addition, we chose compactness and efficiency over scale. The target capacity of one Carbominer DAC is 50 tonnes per year.

What is Carbominer's use case for the CO₂?

This is a good point, because trees do absorb a lot of CO₂ from the atmosphere and have been doing so since long before mammals appeared. However, humanity is constantly cutting down trees, both legally and illegally. Also, due to the heat and arid climate, many young trees die before they reach their peak CO₂ capture capacity. Therefore, relying on tree planting alone to reduce the planet's heating in the long term is a bit risky.

Moreover, in the current consumer economy and with the number of polluting companies continuing to emit greenhouse gases (i.e. those that cause the so-called ‘greenhouse effect’, including CO₂) into the atmosphere, our planet needs all possible methods, including planting and caring for trees (natural DAC) and using man-made technologies that absorb carbon dioxide (engineered DAC).

However, reforestation is still a critical issue for the environment. If done right, reforestation reduces soil erosion and increases biodiversity, while additionally absorbing carbon dioxide from the surrounding air.

Do we really need Direct Air Capture? Can't we just plant more trees?

This is a good point, because trees do absorb a lot of CO₂ from the atmosphere and have been doing so since long before mammals appeared. However, humanity is constantly cutting down trees, both legally and illegally. Also, due to the heat and arid climate, many young trees die before they reach their peak CO₂ capture capacity. Therefore, relying on tree planting alone to reduce the planet's heating in the long term is a bit risky.

Moreover, in the current consumer economy and with such a large number of polluting companies continuing to emit greenhouse gases (i.e. those that cause the ‘greenhouse effect’, including CO₂) into the atmosphere, our planet needs all hands on deck. We should utilize all the possible methods, including planting and caring for trees (natural DAC) and using man-made technologies that absorb carbon dioxide (engineered DAC).

However, reforestation is still a critical issue for the environment. If done right, reforestation reduces soil erosion and increases biodiversity, while additionally absorbing carbon dioxide from the surrounding air.