Carbon dioxide would be filtered out of the air with special trains

Carbon dioxide would be filtered out of the air with special trains

A creative idea can facilitate the spread of technology.

The concentration of carbon dioxide in the Earth’s atmosphere is increasing due to emissions from various sources, and as a result the atmosphere is getting warmer, which should be changed extremely quickly, because we are already there , that it is good if the average temperature of the planet rises by only one and a half degrees by the middle of the century. This problem can be helped by devices that can filter carbon dioxide directly from the air and store it for some secondary use. This method is called direct air capture (DAC), for which there is currently no exact translation in Hungarian, perhaps the closest is direct carbon dioxide separation we’ll get to the truth, but for the sake of simplicity let’s stick with DAC. Several methods have already been invented for filtering carbon dioxide, but DAC typically requires serious land installations, i.e. a relatively large area and a lot of energy, since huge fans are used to clean the air containing carbon dioxide. In other words, renewable energy sources are also needed for environmentally friendly operation, and at the same time, creating a DAC facility requires long and complex bureaucratic processes and permits. In addition, writes the Science Daily – in many cases, people living close to the facility oppose the construction (which is somehow incomprehensible, since it is not a nuclear cemetery, the carbon dioxide it is not returned to the circulation, this is precisely the essence of the technology). This is a huge problem, because everyone wants to solve the climate crisis, but no one wants to see the solution around their own doorstep – pointed out chemical engineer Geoffrey Ozin, head of the research group dealing with alternative fuels at the University of Toronto. The CO2Rail startup concept, which specially modified railway carriages, can provide an answer to the question of removing atmospheric carbon dioxide would be used to filter out carbon dioxide. The essence of the solution is that the wagons are equipped with huge air intakes similar to those of sports cars, thereby saving on the operation of large and energy-consuming fans. Egy átlagos tehervonat évi 6000 tonna szén-dioxidot is kiszűrhet a levegőből (Fotó: Co2Rail)Egy átlagos tehervonat évi 6000 tonna szén-dioxidot is kiszűrhet a levegőből (Fotó: Co2Rail) An average freight train can filter up to 6,000 tons of carbon dioxide from the air per year (Photo: Co2Rail) In this way, the railway carriage inhales the air as it moves, filtering out its carbon dioxide content. When the storage is full, the bound carbon dioxide is converted into a liquid, which is emptied into a dedicated container at the destination. And the cleaned air gets back into the Earth’s atmosphere while on the move. Energy is generated from braking The founder of the company, E Bachman (his name also appears on the company’s website) also thought that the gigantic mass of railway trains could only be braked with enormous forces. When a train slows down, its kinetic energy is converted into heat and leaves the outside world, which is not very fortunate. That means a lot of wasted energy. Each complete braking maneuver releases enough energy to meet the daily needs of approximately 20 average households – pointed out the company founder, adding that this energy could also be used to curb climate change.Ozin added that the use of railway equipment to filter out carbon dioxide is also a logical solution because the infrastructure is practically ready, so only the conversion of the wagons would be necessary. The company’s experts calculate that an average freight train could remove about 6,000 tons of carbon dioxide from the air every year. In addition, since the energy needed for this could be produced locally, the specific costs per ton are significantly lower than other DAC systems – less than $50.There is currently no information on when the first DAC wagons can be put into operation, but this would be extremely necessary, because Advanced Science News according to his information, filtering out carbon dioxide is such an energy-intensive process that 25 percent of all energy produced should be used for this purpose by the end of the century. We have more to tell you, you can find all the interesting things here!

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