FUM Researchers Create a Device to Recover Chromium From Wastewater ( Archive )
Members of Naneat group from Ferdowsi University of Mashhad, have designed a device for recovery of chromium from wastewater.
Chromium is one of the most important metallic pollutants in plating industry wastewater. This toxic metal is a serious threat to human health and to the environment due to its cumulative effects and non-degradability.
The device is able to adsorb chromium in wastewater through nano photocatalytic titanium oxide that has been placed on a ceramic substrate. It works based on activating of nanoparticles of titanium oxide with a special wavelength of UVC.
Due to photocalytic reactions on the surface, chromium will be absorbed on the surface from the falling film of wastewater, and the absorbed chromium with 98% sulfuric acid would be solved and washed away.
After the saturation of surface with chromium and depending on wastewater chromium content, the acid will be replaced after some cycles. This cycle would increase chromium on surfaces by falling a film of wastewater, so the acid will be repeated which an anti-acid pump, as well as a pair of electrical valves and a microcontroller, will do all of these.
The device, recovery of chromium from wastewater, was created by Hooman Bakhshi, Mehdi Ghasemi and Pouria Paridash in Ferdowsi University of Mashhad.