Nano Motors should help to filter carbon dioxide from water




American scientists have minuscule motors built with which it is possible to filter carbon dioxide from water, to precipitate the calcium as carbonate. Possible can help such motors to counteract the greenhouse effect.

The system was designed by researchers at the University of California at San Diego. In an article in the renowned scientific journal Angewandte Chemie, they explain that the structures built by them are more or less small tubes of six micrometers long with it a kind of swish tail. Thus, the motors can propel themselves if they are released in water, at a rate of about 100 microns per second.

To the tubes is an enzyme confirmed that carbon dioxide in the water in order to convert to calcium carbonate, which will appear in solid form as a precipitate. Incidentally, the record or calcium chloride must be added to the water, in order to obtain the necessary calcium for the conversion. Experiments show that the motors in such a solution rapidly to carbon capture. In a time frame of 5 minutes was approximately 90 percent of the available CO 2 scavenged. Efficacy was similar in seawater, with a percentage of 88 percent carbon dioxide filtered away.

One of the drawbacks of the current system is that, in spite of the nano structure, “fuel” is needed to move the motors. With the aid of hydrogen peroxide which is added to the water, the structures can be induced to move; in future versions, the scientists want to make sure that there is no more fuel is needed, but that the motors can propel themselves in water. Should it succeed, then it is possible that such devices be used in the future to reduce the greenhouse effect; CO 2 is a known greenhouse gas and thus provides for global warming. The researchers think that special water filter systems that come with the nano-motors can contribute to the environment.

In: Technology & Gadgets Asked By: [18412 Red Star Level]

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