Nanotechnology Now

Our NanoNews Digest Sponsors


Heifer International

Wikipedia Affiliate Button

Home > Press > Fabrication of New Alumina Adsorbent to Remove Formaldehyde from Water

Abstract:
Iranian researchers succeeded in the production of a new type of nano-adsorbent which is capable of removing formaldehyde from water resources.

Fabrication of New Alumina Adsorbent to Remove Formaldehyde from Water

Tehran, Iran | Posted on June 20th, 2012

The importance of the study is that it was a challenge before to identify this carcinogenic compound (formaldehyde) in the environmental sources. Being known as a very applicable compound and despite its high toxicity and carcinogenic properties, over 10 million tons of formaldehyde is annually produced all over the world.

Taking into account the need for the production of materials able to eliminate formaldehyde, researchers studied the effective parameters on the reactivity of alumina nanoparticles. They carried out the project successfully by grafting 2,4-dinitrophenylhydrazine on alumina nanoparticles. They placed the synthesized sample and the alumina sample without grafting at a polluted environment with determined concentrations of formaldehyde, and they compared the amount of formaldehyde adsorption by the samples.

Observations showed that the presence of alumina nanoparticles in the polluted environment did not change the concentration of formaldehyde. In order to improve the reactivity of alumina nanoparticles, the researchers grafted 2,4-dinitrophenylhydrazine reactant to alumina nanoparticles, and they reported their observations. Results showed that the grafting process resulted in the adsorption of formaldehyde from the polluted environment up to 99%.

In addition, the effect of various parameters such as pH and the contact time between the polluted environment and the grafted alumina nanoparticles were also studied in this research. Results showed that high values of pH helped the decomposition of formaldehyde, which resulted in a decrease in the concentration of formaldehyde. However, this fact reduced the adsorption efficiency, and it caused interference in the adsorption process. They reported that a pH value of 7 was the most optimum pH value in order to obtain high efficiency.

Another result obtained from the research was that the presence of high concentrations of various ions, including calcium and sodium, did not significantly affect the adsorption capacity of the grafted alumina nanoparticles.

####

For more information, please click here

Copyright © Fars News Agency

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

New theory could lead to new generation of energy friendly optoelectronics: Researchers at Queen's University Belfast and ETH Zurich, Switzerland, have created a new theoretical framework which could help physicists and device engineers design better optoelectronics August 23rd, 2016

New flexible material can make any window 'smart' August 23rd, 2016

University of Puerto Rico and NASA back in the news XEI reports August 23rd, 2016

Nanoparticles that speed blood clotting may someday save lives August 23rd, 2016

Discoveries

New theory could lead to new generation of energy friendly optoelectronics: Researchers at Queen's University Belfast and ETH Zurich, Switzerland, have created a new theoretical framework which could help physicists and device engineers design better optoelectronics August 23rd, 2016

New flexible material can make any window 'smart' August 23rd, 2016

Nanoparticles that speed blood clotting may someday save lives August 23rd, 2016

Researchers reduce expensive noble metals for fuel cell reactions August 22nd, 2016

Announcements

New theory could lead to new generation of energy friendly optoelectronics: Researchers at Queen's University Belfast and ETH Zurich, Switzerland, have created a new theoretical framework which could help physicists and device engineers design better optoelectronics August 23rd, 2016

New flexible material can make any window 'smart' August 23rd, 2016

University of Puerto Rico and NASA back in the news XEI reports August 23rd, 2016

Nanoparticles that speed blood clotting may someday save lives August 23rd, 2016

Environment

Researchers watch catalysts at work August 19th, 2016

Down to the wire: ONR researchers and new bacteria August 18th, 2016

SLAC, Stanford gadget grabs more solar energy to disinfect water faster: Plopped into water, a tiny device triggers the formation of chemicals that kill microbes in minutes August 15th, 2016

'Liquid fingerprinting' technique instantly identifies unknown liquids: Ability to instantly identify unknown liquids in the field could aid first responders, improve plant safety August 4th, 2016

Water

SLAC, Stanford gadget grabs more solar energy to disinfect water faster: Plopped into water, a tiny device triggers the formation of chemicals that kill microbes in minutes August 15th, 2016

New method for making green LEDs enhances their efficiency and brightness July 30th, 2016

Dirty to drinkable: Engineers develop novel hybrid nanomaterials to transform water July 28th, 2016

New nontoxic process promises larger ultrathin sheets of 2-D nanomaterials July 27th, 2016

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic