A new class of carbon nanotubes could be the next-generation clean-up crew for toxic sludge and contaminated water, say researchers at Rochester Institute of Technology.
Enhanced single-walled carbon nanotubes offer a more effective and sustainable approach to water treatment and remediation than the standard industry materials—silicon gels and activated carbon—according to a paper published in the March issue of Environmental Science Water: Research and Technology.
RIT researchers John-David Rocha and Reginald Rogers, authors of the study, demonstrate the potential of this emerging technology to clean polluted water. Their work applies carbon nanotubes to environmental problems in a specific new way that builds on a nearly two decades of nanomaterial research. Nanotubes are more commonly associated with fuel-cell research.
“This aspect is new—taking knowledge of carbon nanotubes and their properties and realizing, with new processing and characterization techniques, the advantages nanotubes can provide for removing contaminants for water,” said Rocha, assistant professor in the School of Chemistry and Materials Science in RIT’s College of Science.
Rocha and Rogers are advancing nanotube technology for environmental remediation and water filtration for home use.
“We have shown that we can regenerate these materials,” said Rogers, assistant professor of chemical engineering in RIT’s Kate Gleason College of Engineering. “In the future, when your water filter finally gets saturated, put it in the microwave for about five minutes and the impurities will get evaporated off.”
Carbon nanotubes are storage units measuring about 50,000 times smaller than the width of a human hair. Carbon reduced to the nanoscale defies the rules of physics and operates in a world of quantum mechanics in which small materials become mighty.
“We know carbon as graphite for our pencils, as diamonds, as soot,” Rocha said. “We can transform that soot or graphite into a nanometer-type material known as graphene.”
A single-walled carbon nanotube is created when a sheet of graphene is rolled up. The physical change alters the material’s chemical structure and determines how it behaves. The result is “one of the most heat conductive and electrically conductive materials in the world,” Rocha said. “These are properties that only come into play because they are at the nanometer scale.”
The RIT researchers created new techniques for manipulating the tiny materials. Rocha developed a method for isolating high-quality, single-walled carbon nanotubes and for sorting them according to their semiconductive or metallic properties. Rogers redistributed the pure carbon nanotubes into thin papers akin to carbon-copy paper.
“Once the papers are formed, now we have the adsorbent—what we use to pull the contaminants out of water,” Rogers said.
The filtration process works because “carbon nanotubes dislike water,” he added. Only the organic contaminants in the water stick to the nanotube, not the water molecules.
“This type of application has not been done before,” Rogers said. “Nanotubes used in this respect is new.”
The Latest on: Water purification
via Google News
The Latest on: Water purification
- Plans for a new water treatment plant in Yass delayedon January 24, 2021 at 5:00 am
Yass residents say they are fed up with the lack of progress in revamping their water system, after Yass Valley Council's plan for a $31.2 new water treatment plant was delayed by the NSW Department ...
- Mobile Water Treatment Market Forecast Covering Growth Inclinations until 2031on January 24, 2021 at 3:26 am
Revenue value for global Mobile Water Treatment market to reach USD $$ million by 2028 and valued approximately USD $$ million in 2018 is anticipated to grow with a healthy growth rate of more than $$ ...
- Water Treatment Chemicals Market Share 2021, Trends, Demand Status, Size, Top Industry Analysis with Current Growth Drivers and Restraints to 2026on January 24, 2021 at 1:10 am
Jan (The Expresswire) -- Water Treatment Chemicals Market 2020 Global Business Impact by COVID-19, Size Analysis, Trends, Upcoming Demand and ...
- Philly's water treatment now being brought up to codeon January 23, 2021 at 1:00 am
Philadelphia is violating the Clean Water Act, according to officials who say they're making a $100 million investment in the city's water treatment to help bring them up to code. Another neighboring ...
- Global Food & Beverage Water and Wastewater Treatment Market Report 2020 with Case Studies from Arla Foods, PepsiCo & Veolia Wateron January 22, 2021 at 6:45 am
The "Sustainable Solutions Create Growth Opportunities in the Global Food & Beverage Water and Wastewater Treatment" report has been added ...
- Wrinkled graphene sheets offer a shortcut for water purificationon January 21, 2021 at 5:32 pm
Scientists at Brown University have demonstrated a promising new water purification technology that takes advantage of the tiny gaps in stacked sheets of graphene to filter out contaminants with great ...
- Water and Wastewater Treatment Market 2021 Size, Share, Applications, Technology Trends, Challenges and Forecast to 2025on January 21, 2021 at 2:18 pm
REPORT HIGHLIGHT The water and wastewater treatment market is estimated to represent a global market of USD 492.1 ...
- Grand Haven school turning on new water filtration system after 2018 PFAS detectionon January 21, 2021 at 12:10 pm
Robinson Elementary School will turn on its water faucets next week for the first time since October 2018, when the toxic “forever chemicals” known as PFAS were found in its water system.
- Global Produced Water Treatment Market Insights Focusing On 2021 Growth Strategies and Opportunity by 2031on January 20, 2021 at 9:56 pm
Pune, Maharashtra, India, January 21 2021 (Wiredrelease) Prudour Pvt. Ltd :Global 2021 Produced Water Treatment Market Recapitulation by 2031. A futuristic comprehensive insight o ...
via Bing News