Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Iranian Researchers Find New Application for Nanosilica as Dye Adsorbent

Abstract:
Researchers at Iran University of Science and Technology succeeded in improving the ability of nanosilica to adsorb acidic dyes by functionalizing porous nanosilica.

Iranian Researchers Find New Application for Nanosilica as Dye Adsorbent

Tehran, Iran | Posted on July 8th, 2012

Thousands of tons of various dyes are annually produced all over the world, from which 15% are wasted during the production or painting process, according to the statistics.

The wasted parts of dyes usually permeate to water sources and damage the environment. The dyes are required to be eliminated in order to purify the polluted water. Various methods have so far been proposed in order to remove the dyes, among which the adsorption method is more cost-effective.

In their studies, the researchers used porous nanosilica functionalized by ethylenediamine (SBA-3/EDA), aminopropyl (SBA-3/APTES), and pentaethylenehexamine (SBA-3/PEHA). Various investigations were carried out on such materials, suggesting that their adsorption capabilities were as follows: SBA-3/PEHA > SBA3/APTES > SBA-3/EDA > SBA-3‎.

According to the studies, SBA-3/PEHA was identified as a very good adsorbent of acidic dyes. The adsorption mechanism of such nanomaterials is based on the electrostatic attraction and hydrogen bond created between the adsorbent surface and acidic dyes.

The results of the observations showed that the adsorption of SBA-3/PEHA decreased when the pH value increased. The optimum temperature for adsorption process was reported to be 20°C. The amount of adsorption decreases when the temperature increases.

The research has been published in detail in July 2012 in Dyes and Pigments.

####

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

Chemistry

Iranian, Malaysian Scientists Study Nanophotocatalysts for Water Purification October 23rd, 2014

News and information

Novel Rocket Design Flight Tested: New Rocket Propellant and Motor Design Offers High Performance and Safety October 23rd, 2014

MEMS & Sensors Technology Showcase: Finalists Announced for MEMS Executive Congress US 2014 October 23rd, 2014

Nanoparticle technology triples the production of biogas October 23rd, 2014

SUNY Polytechnic Institute Invites the Public to Attend its Popular Statewide 'NANOvember' Series of Outreach and Educational Events October 23rd, 2014

Discoveries

Iranian Scientists Apply Nanotechnology to Produce Surgery Suture October 23rd, 2014

Iranian, Malaysian Scientists Study Nanophotocatalysts for Water Purification October 23rd, 2014

Nanoparticle technology triples the production of biogas October 23rd, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Announcements

Nanoparticle technology triples the production of biogas October 23rd, 2014

SUNY Polytechnic Institute Invites the Public to Attend its Popular Statewide 'NANOvember' Series of Outreach and Educational Events October 23rd, 2014

Advancing thin film research with nanostructured AZO: Innovnano’s unique and cost-effective AZO sputtering targets for the production of transparent conducting oxides October 23rd, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Water

Iranian, Malaysian Scientists Study Nanophotocatalysts for Water Purification October 23rd, 2014

New Nanocomposites Help Elimination of Toxic Dyes October 15th, 2014

Fast, cheap nanomanufacturing: Arrays of tiny conical tips that eject ionized materials could fabricate nanoscale devices cheaply October 4th, 2014

Production of Filters for Separation of Water from Petroleum Products in Iran October 1st, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE