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Carbon Nanotube Material Removes 99% Of Heavy Metals From Water
2017-09-07 16:13:08
 

A set of innovative filters were found to eliminate up to 99 percent of heavy metals in contaminated water. The filters, produced in a Rice University laboratory, was developed from carbon nanotube materials that were grown in place on chemically-epoxidized quartz fibers. Lab findings showed that the filter was able to absorb more than 99 percent of metals from water samples contaminated with heavy metals such as cadmium, cobalt and copper as well as mercury, nickel and lead.

According to the scientists, one gram of the material could treat 83,000 liters of contaminated water in order to meet World Health Organization (WHO) standards. This was enough to provide clean water for 11,000 people on a daily basis. The research team also noted that scaled-up versions of the filters can treat up to five liters of water in less than one minute and be renewed in 90 seconds. In addition, the filters were able to retain 100 percent of its capacity after treating up to 70 liters of water per 100 grams of the material. Once the filters get saturated, can be washed with a mild household chemical like vinegar and reused, the researchers added.

“Every culture on the planet knows how to make vinegar. This would make the biggest social impact on village-scale units that could treat water in remote, developing regions. However, there is also the potential to scale up metal extraction, in particular from mine wastewater,” chemist Andrew Barron told ScienceDaily.com.


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