An inexpensive way to clean the air from carbon dioxide. Free Technical Library News

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Inexpensive way to clean the air from carbon dioxide

15.06.2018

Specialists from the Canadian company Carbon Engineering have developed a method that allows carbon dioxide to be extracted directly from the atmosphere using a cycle of chemical reactions. According to the creators of the technology, its distinguishing feature is low costs compared to other methods.

Carbon dioxide obtained with the help of new technology can become the basis of fuel. Today, there are several methods for obtaining fuel from CO2: for this, special membranes are used to separate oxygen and carbon monoxide, as well as specially designed catalysts.

The method proposed by Canadian engineers is not the first in this area, there are many ways to get CO2 from the atmosphere. However, most of these technologies are expensive: according to various estimates, the cost of obtaining a ton of gas can range from $600 to $94. Representatives of Carbon Engineering say that the gas produced by their technology will cost between $232 and $XNUMX per ton.

The authors of the new method propose to collect air saturated with carbon dioxide using special structures reminiscent of modern cooling towers (cooling towers). Air is pumped inside with the help of fans and interacts with the alkaline solution. The resulting liquid is frozen, and then gradually heated, bringing to the consistency of a thick suspension. The substance goes through a cycle of chemical reactions, interacting with slaked lime, then carbon dioxide is released. It can be used in the production of gasoline and diesel fuel.

According to engineers, taking into account all the costs, such fuel will be more expensive than conventional gasoline. At the same time, its producers will still be able to compete with enterprises that receive fuel using standard methods: the price of "ordinary" gasoline includes high environmental taxes, and their volume is constantly growing. Carbon Engineering has already tested the technology at a small facility in British Columbia. If the company manages to find sponsors, the engineers plan to build a large CO2 plant using the new technology no later than 2021.

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