Iranian researchers invent nanoabsorbent to remove heavy metals from wastewater

Sponsored by

TEHRAN, Iran, Jan. 21, 2010 -- Iranian researchers have synthesized a silica nanopore and modified its structure to absorb more heavy metals from industrial wastewaters.

Hamid Sepehrian and his colleagues managed to modify MCM-41 silica nanopore by thiol and amine functional groups and synthesized a new nanopore absorbent with high heavy cations absorption capacity.

"We first produced MCM-41 silica nanopore and then used (3-mercaptopropyl) trimetoxy silane and (3-aminopropyl) trietoxy silane to functionalize nanopore structure," Sepehrian said to the news service of INIC about the synthesis steps of the mentioned nanopore.

For this purpose, the researchers refluxed a definite amount of MCM-41 nanopore and the mentioned organic reactants in toluene. After a definite time, they filtered it, rinsed several times with ethanol and finally dried it.

"For measuring absorption level we stirred mixtures of absorbent and different ions and measured ion level in the mixture after a definite time," Sepehrian added.

The results show that zinc ion absorption on the synthesized absorbent has increased considerably compared to two previous absorbents which were functionalized just by one functional group.

All industries in which wastewaters containing heavy cations like chrome, mercury, zinc and zirconium exist can use this product.

The details of the present study are available at the Chinese Journal of Chemistry, volume 27, pages 2171 to 2174, 2009.

###

Sponsored by

TODAY'S HEADLINES

EPA awards over $17M in Great Lakes Restoration Initiative grants to address algal blooms

The Environmental Protection Agency has announced the award of 14 Great Lakes Restoration Initiative grants totaling over $17 million to fund projects that will improve Great Lakes water quality by preventing phosphorus runoff and soil erosion that contribute to algal blooms.

Texas water district recognized for Eagle Mountain Spillway Dam rehabilitation

The Association of State Dam Safety Officials announced that it has awarded the Tarrant Regional Water District of Texas with the National Rehabilitation Project of the Year Award.

Innovyze named winner of prestigious Esri Partner Conference Award

Innovyze recently announced that it was named the winner of the ArcGIS for Desktop Based Application category of the Esri Partner Conference Awards.

CH2M HILL partnership to deliver safe, clean water supply to Jaipur, India

CH2M HILL in partnership with the Singapore Public Utilities Board and Singapore Cooperation Enterprise, is providing water management leadership services to the Rajasthan state government through Public Health and Environment Department for the city of Jaipur, India.

FOLLOW US ON SOCIAL MEDIA