Sponsor:
German Environmental Agency, Dessau (FKZ 3706 65 417)
Realisation:
IUTA e.V., Duisburg, Dr. Thomas Kuhlbusch (Projektleiter)
RWTH Aachen, Institut für Umweltforschung, Prof. Dr. Toni Ratte
TU Dresden, Institut für Verfahrenstechnik und Umwelttechnik, PD Dr.-Ing. habil. Michael Stintz
Universitätsklinikum Heidelberg, Inst. Hygiene und Medizinische Mikrobiologie, PD Dr. Lothar Erdinger
Hydrotox GmbH, Stefan Gartiser
Project Duration:
10/2010 - 05/2011
Summary:
The objective of the project was to analyse the applicability of the OECD Guidelines for the Testing of Chemicals regarding the fate assessment of nanoparticles in soil and sewage treatment plants. The task of Hydrotox was to determine the behavior of nanoscale titanium dioxide (TiO2 P25) in the laboratory sewage treatment plant simulation test according to OECD 303 A. The test design was adopted to allow a quantitative assessment of the fate and behaviour of nanomaterials in municipal sewage treatment plants and the detection of potential inhibitory effects to activated sludge. Altogether 1344 mg P25 in a suspension were added in three different concentrations each for one week: first week 1 mg/L, second week 5 mg/L and third week 10 mg/L. The chemical analysis showed that only 3 – 4% of the added TiO2 was found in the effluent. The main part of the nanomaterial was adsorbed to the sludge. No negative impact regarding the DOC-elimination of the synthetic sewage or nitrification was observed. It can be concluded, that the OECD Guidelines 303A is applicable to nanomaterials when considering specific recommendations concerning dosage, analytics, and mass balancing.
Further Informationen
The 
final report has been published as UBA-Texte Nr. 25/2012.
Contact Person:
Dr. Stefan Gartiser
e-mail gartiser@hydrotox.de
Tel.: +49-(0)761-45512-24