title: Removing selected steroid hormones, biocides and pharmaceuticals from water by means of biogenic manganese oxide nanoparticles in situ at ppb levels.
abstract: The oxidation of organic micro-pollutants by biogenic manganese oxide nanoparticles (BioMnOx) has been studied with respect to possible implementation of BioMnOx in wastewater treatment. For this it would be prerequisite that microbial Mn(2+) oxidation and BioMnOx-driven pollutant removal can occur in situ, i.e. in the same reactor as the removal. Here we present the in situ reactivity of BioMnOx produced by Pseudomonas putida towards a range of micro-pollutants at environmentally relevant concentrations (10 μg L(-1)). We found that in situ formed BioMnOx completely removed the steroid hormones estrone and 17-α ethinylestradiol, while only 26% removal of diclofenac was achieved. Ibuprofen, tebuconazole, carbamazepine, carbendazim, and terbutryn were not removed under in situ conditions.
authors.affiliation: Aarhus University, Department of Environmental Sciences, Frederiksborgvej 399, 4000 Roskilde, Denmark; Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds vej 14, 8000 Aarhus C, Denmark.
authors.forename: Karolina M
authors.initials: KM
authors.lastname: Furgal
authors.affiliation: Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds vej 14, 8000 Aarhus C, Denmark; Department of Bioscience, Aarhus University, Ny Munkegade 114, 8000 Aarhus C, Denmark.
authors.forename: Rikke L
authors.initials: RL
authors.lastname: Meyer
authors.affiliation: Aarhus University, Department of Environmental Sciences, Frederiksborgvej 399, 4000 Roskilde, Denmark. Electronic address: kb@envs.au.dk.
authors.forename: Kai
authors.initials: K
authors.lastname: Bester
mesh_terms: D004008:Diclofenac / Q000032:analysis / Q000737:chemistry; D004202:Disinfectants / Q000032:analysis / Q000737:chemistry*; D007052:Ibuprofen / Q000032:analysis / Q000737:chemistry; D017895:Manganese Compounds / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D016958:Pseudomonas putida; D013256:Steroids / Q000032:analysis / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
chemical_list: D004008:Diclofenac; D004202:Disinfectants; D007052:Ibuprofen; D017895:Manganese Compounds; D010087:Oxides; D013256:Steroids; D062065:Wastewater; D014874:Water Pollutants, Chemical; C027424:manganese oxide
keywords: Advanced treatment; Biogenic manganese oxides; Emerging contaminants; Oxidation; Wastewater