Ti-Modified Mesoporous Silica for Removal of Chromium from Wastewater

Chromium is found in many forms but the variation Cr(VI) is known to be carcinogenic to humans. It is therefore important to ensure it is removed from aqueous solutions and industrial effluents.

Among the known methods for removing chromium from aqueous solutions, adsorption is an alternate technology based on the ability of some porous materials to bind chromium to their inner surfaces. In order to improve the efficiency of this process a variety of new synthetic materials are under investigation.

In this work by a research team from Universidad de Guanajuato in Mexico, several Ti-Modified MCM-41 mesoporous materials were prepared using chemical grafting and incipient-wetness impregnation. These materials were characterized to study the effect of this modification on chromium-adsorption capacity. The present study introduces a good alternative method for Cr(VI) removal from aqueous and industrial wastewater solutions, allowing the development of newer, lower operational cost, and more efficient technology than other processes already in use.

The article is available to view at https://www.azom.com/Details.asp?ArticleID=3567