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Organic contaminant transformation during redox reactions of Fe(II)- bearing clay minerals

seminar | March 18 | 11A.m. - 12 p.m. | BWC Conference Room, 4th floor of O'Brien Hall
 
Dr. Anke Neumann (http://www.ncl.ac.uk/ceg/staff/profile/anke.neumann) from Newcastle University in the UK will be visiting on March 18, and will present a special seminar (abstract below).  Please invite your research groups and also forward to others that may be interested.  She would also like to meet with researchers individually or in small groups - please email her (cc'd) if you are available to meet before or after her seminar.
 
Dr. Anke Neumann
11:00 - 12:00
BWC Conference Room
4th floor of O'Brien Hall

Organic contaminant transformation during redox reactions of Fe(II)- bearing clay minerals

Clay minerals play an important role for the fate of organic and organic contaminants. In addition to contaminant sorption, clay minerals also contribute to contaminant transformation, for example of organic contaminants such as nitroaromatic compounds or halogenated hydrocarbons, in the presence of structural Fe(II) in clay minerals. Most studies so far have focussed on investigating contaminant reduction with chemically or biologically reduced Fe(II)-bearing clay minerals. We have, however, recently shown that aqueous Fe(II), an abundant reductant in anoxic environments, is also capable of transferring electrons to structural Fe in clay minerals, resulting in the formation of clay mineral Fe(II) and an Fe(III) oxidation product. This seminar will explore our recent work on contaminant reduction with Fe(II)-reduced clay minerals, with particular focus on the role of the in situ-formed solid Fe(III) oxidation product. In the second part of the seminar, I will present our current findings on contaminant oxidation in the presence of Fe(II)-bearing clay minerals. In this research theme, we investigates the formation of reactive oxidizing species from the reaction of clay mineral Fe(II) with oxygen for the design of a novel advanced oxidation process for water treatment.