Registration Dossier

Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

Currently viewing:

Administrative data

Endpoint:
biodegradation in water: sewage treatment simulation testing
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: guideline study, publication without detailed information

Data source

Referenceopen allclose all

Reference Type:
publication
Title:
Messung der Bioelimination von Chloranilinen
Author:
Janicke W, Hilge G
Year:
1980
Bibliographic source:
GWF-Wasser/Abwasser 121, 131-135
Reference Type:
publication
Title:
Unnamed
Year:
2006

Materials and methods

Test guideline
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 303 A (Simulation Test - Aerobic Sewage Treatment. A: Activated Sludge Units)
Principles of method if other than guideline:
Method: other: Confirmatory Test (Detergentiengesetz), DIN 38412 Teil 24
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Inoculum or test system:
activated sludge (adaptation not specified)
Details on inoculum:
adapted on p-chloraniline
Initial test substance concentration
Initial conc.:
20 mg/L

Results and discussion

% Degradation
% Degr.:
15 - 20
Sampling time:
50 d

Applicant's summary and conclusion

Executive summary:

The "Confirmatory Test" in a simulated aerobic sewage treatment showed a degradation (elimination) of 15 -20%.

Therefore 3,4 -DCA is regarded as not biodegradable in municipal waste water treatment plants.

Lower adsorbtion was determined with glass materials compared to pvc equipment.

The tested 3,4 -DCA concentrations were in the range of measured toxicity for bacteria.