![]() This process splits a small stream (less than 1%) of the seawater being pumped through Captura’s system into a strong acid (HCl) and a strong alkali (NaOH). ![]() The technological heart of Captura’s DOC system is a proprietary electrodialysis process that is expected to be around ten times more efficient than legacy systems. In recognition of the important role the upper levels of the ocean play in helping to regulate the earth’s carbon cycle, the US Department of Energy treats carbon capture from the upper hydrosphere as equivalent to that from the atmosphere in its carbon removal purchase regulations. Henry’s Law dictates that the end result of DOC and DAC is the same-heat-trapping carbon dioxide gets pulled out of the atmosphere. As such, using DOC to capture carbon dioxide is proportionally less energy intensive than removing it from the air using DAC. Oceans are much denser than the atmosphere, which means that the concentration of marine CO 2 is about 150 times higher volumetrically than that of atmospheric CO 2. Its facilities remove CO 2 from seawater, making room for more atmospheric CO 2 to bubble down into the ocean to maintain the Henry’s Law equilibrium. Henry’s law is why carbonated drinks bubble-the amount of CO 2 dissolved in the drink is greater than the amount in the air, so it bubbles out of the liquid in a pleasing, effervescent way.Ĭaptura leverages Henry’s Law to restore the planet’s carbon balance by effectively running the fizzy drink carbonation process in reverse. In pre-Industrial times, the proportion of carbon dioxide in the atmosphere was around 280 parts-per-million now, that figure has risen to around 420ppm and the rise in atmospheric CO 2 means the amount of CO 2 dissolved in seawater has increased proportionally as well.* ![]() Henry’s Law states that the levels of gas dissolved in a liquid is always directly proportional to the pressure of that gas in the atmosphere above. Captura's Direct Ocean Capture TechnologyĬaptura is a leader in the relatively new field of DOC, a technology which aims at restoring the earth’s carbon balance by exploiting a fundamental law of nature. Key investments from industry leaders, including Maersk Growth, Eni Next, and EDP Ventures, underscore Captura's growing network and momentum. Just a few weeks ago, the company announced it had extended its Series A offering and successfully raised an additional $21.5 million. The company raised $12 million in a Series A offering in early 2023 and lined up an impressive group of partners, including Equinor, Aramco, and Hitachi. The Captura system does not need chemical inputs (such as the sorbents required for the processes used by DAC companies like Carbon Engineering and Climeworks) and its only outputs are completely natural-CO 2 and decarbonized seawater. Oldham, formerly the CEO of ground-breaking Canadian direct air capture firm, Carbon Engineering, told me that one of the things that most appealed to him about the Captura solution was its technical elegance. Steve Oldham, CEO of Captura Corporation.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |