Research School for Socio-Economic and
Natural Sciences of the Environment
Research School for Socio-Economic and
Natural Sciences of the Environment
Agenda

Liu Wenbo

Date: 26 January 2018
Time: 13:30 - 15:00
Location: Aula, building 362, Gen. Foulkesweg 1, Wageningen

Dissertation title: 

Anaerobic manganese- or iron-mediated pharmaceutical degradation in water

Group: Wageningen University, Environmental Technology
Promotors: Prof.dr.ir. H.H.M. Rijnaarts
Copromotors: Dr.ir. A.A.M. Langenhoff and dr. N.B. Sutton

Extra information:

Abstract:

Pharmaceuticals have been detected in water and can have adverse effects on the environment. Anaerobic biotic and abiotic degradation of pharmaceuticals can be mediated by manganese or iron (hydr)oxides; this research shows that removal can be realized between 33% and 80%. Abiotic removal of diclofenac with Mn(IV) was promoted by anoxic conditions. Further investigation showed that the temperature, Mn(IV) amount, and co-solutes affect these removal processes. To reuse the Mn or Fe during pharmaceutical removal under anaerobic/anoxic conditions, production of Mn(IV) or Fe(III) was investigated under oxygen-limiting conditions or with nitrate as electron acceptor. Under both conditions, no biodegradation of pharmaceuticals was observed. Finally, Mn(IV) and Fe(III)-containing materials, originating from drinking water production plants, are suitable for abiotic removal of pharmaceuticals from water. A proposal is presented to use these processes in full-scale application.