Influence the cost of carbon capture technology using electrodialysis

Electrodialysis as a suitable technology for carbon capture

Electrodialysis technology for CO₂ capture depends on various factors such as technical feasibility, economic viability, environmental impact, and social acceptability. Considering these criteria, electrodialysis has proven to be a suitable technology for regenerating absorbents when these chemical media are already depleted of CO₂ and need to be cleaned of impurities for reuse.

MEGA advanced electrodialysis is an efficient technology that uses electricity to dissociate water into acid and base to regenerate bicarbonate-based CO₂ capture solutions. It can be used in chemical processing loops of carbon capture plants.

The main advantage of MEGA electrodialysis for CO₂ capture processes

MEGA electrodialysis effectively reduces the amount of impurities in the chemical media (absorbents) that otherwise limit absorption efficiency and increase the consumption of absorbent solution.

The efficient management of the waste fractions (chemical media - absorbents) obtained from CO₂ capture results in reduced OPEX with minimal environmental impact (no need for regeneration chemicals).

Direct Air Capture CO₂

Today's Direct Air Capture (DAC) technology of CO₂ from the air is based on the contact of ambient air with chemical media such as alkaline solvents or absorbents like KOH or NaOH.

Our unique bipolar electrodialysis (EDBM) technology was developed for companies dealing with the Direct Air Capture of CO₂ from the air, specifically for the purification of absorbents, e.g. (KHCO₃). No regeneration chemicals are needed. By using MEGA's EDBM, you influence the energy and environmental impact of the entire process.

Flue gas carbon capture

Capturing CO₂ from power plants and industrial petrochemical sources that account for a large share of global emissions.

Carbon capture in flue gas, i.e. capturing CO₂ from stationary sources such as power plants, heating plants, or industrial plants producing cement, steel, and chemicals, is the most common technology among current carbon capture projects.

Liquid is used to chemically remove CO₂ before it leaves the stack, with aqueous amine scrubbing being the most mature and commercially available technology.

Using electrodialysis to purify an absorbent solution is approximately 2-3 times cheaper compared to replacing it with a new one.

The use of MEGA electrodialysis provides a more efficient technology for cleaning the absorbents of heat stable salts (HSS), which are the main degradation products remaining in the sorbents after the removal of the captured CO₂ from specific gas mixtures.

Direct ocean carbon capture

Direct Removal of Carbon Dioxide from Oceanwater.

The use of MEGA bipolar electrodialysis on the softened seawater allows hydrochloric acid and caustic solution mixture production. The acid-salty mixture can be used for CO₂ libration from raw seawater. The produced salty caustic can be used for later pH correction, allowing the next CO₂ absorption cycle between air and ocean.