Photocatalytic Removal of Pharmaceuticals from Greywater

Catalysts

Radek Zouzelka¹  Jiri Rathousky¹  Bukola Ojobe²  Jan Bartacek²  Barbora Satkova²  Magdalena Vagnerova³  Alzbeta Nemeskalova³  Martin Kuchar³ 

[1]Centre for Innovations in the Field of Nanomaterials and Nanotechnologies, J. Heyrovsky Institute of Physical Chemistry, Czech Academy of Sciences, Dolejskova 3, 182 23 Prague, Czech Republic

[2]Department of Water Technology and Environmental Engineering, University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague, Czech Republic

[3]Forensic Laboratory of Biologically Active Substances, Department of Chemistry of Natural Compounds, University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague, Czech Republic

关键词: greywater;    photocatalysis;    micropollutants;    metformin;    naproxen;    sulfamethoxazole;   

DOI  :  10.3390/catal11091125

来源: DOAJ

【 摘 要 】

High concentrations of pharmaceuticals have been detected in greywater effluents treated using up-to-date technologies. Finding a suitable additional treatment before this effluent is reused is urgently needed to ensure the reused water meets quality standards. This paper reports the use of heterogeneous photocatalysis on anatase and rutile nanopowders to remove naproxen, metformin and sulfamethoxazole, at practically relevant concentrations found in membrane bioreactor (MBR)-treated greywater. A low anatase concentration of 400 mg L⁻¹ was sufficient to efficiently degrade the pharmaceuticals listed above, with complete degradation observed in 5 h. The effect of background species presented in greywater was, to some extent, comparable to that of the OH-radical scavenger. These results prove that photocatalysis using anatase TiO₂ is a feasible additional treatment for greywater recycling.

【 授权许可】

Unknown