Oxidation of carbamazepine by permanganate and ferrate

ENVR 144

Lanhua Hu, lhu2@uiuc.edu1, Osmarily Arce-Bulted, bulted_2005@yahoo.com1, Matthew Sugihara, msugiha2@uiuc.edu1, Heather Martin1, and Timothy J. Strathmann2. (1) Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, 205 North Mathews Avenue, Urbana, IL 61801, (2) Department of Civil and Environmental Engineering and Center of Advanced Materials for the Purification of Water with Systems, University of Illiois at Urbana-Champaign, 205 North Mathews Avenue, Urbana, IL 61801
Carbamazepine (CBZ) is an anticonvulsant drug prescribed primarily to treat epilepsy and bipolar disorders. Recent reports indicate widespread occurrence of CBZ in surface water and sewage treatment effluent at levels of ng/L to µg/L. As a result, there are growing concerns about the potential effects of CBZ and other pharmaceutically active compounds on both ecosystems and public health. These concerns have also increased interest on the fate of these compounds during drinking water treatment processes. This report will describe efforts to characterize the oxidation of CBZ during drinking water treatment with permanganate (MnO4-) and ferrate (FeO42-) salts. Results show that both permanganate and ferrate are effective in oxidizing CBZ. Systematic experiments were conducted to develop a comprehensive kinetic model capable of accounting for the effects of important water quality variables, including pH, temperature, oxidant concentration and the presence of various non-target water constituents (e.g., FeII, MnII, HS-). LC/MS/MS analysis was used to identify reaction intermediates and products and to propose controlling reaction mechanisms.
 

Advances in Abiotic Transformation Processes for Micropollutants in Drinking Water and for Sourcewater Protection
1:30 PM-5:10 PM, Tuesday, April 8, 2008 Morial Convention Center -- Rm. 237, Oral

Division of Environmental Chemistry

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008