Registration Dossier

Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

Administrative data

Endpoint:
biodegradation in water: sewage treatment simulation testing
Type of information:
experimental study
Adequacy of study:
key study

Data source

Referenceopen allclose all

Reference Type:
study report
Title:
Unnamed
Year:
1993
Report date:
1993
Reference Type:
publication
Title:
Unnamed
Year:
1997

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 303 A (Simulation Test - Aerobic Sewage Treatment. A: Activated Sludge Units)
Deviations:
no
Qualifier:
according to guideline
Guideline:
other:
Deviations:
no

Test material

Radiolabelling:
no

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic (adaptation not specified)
Duration of test (contact time):
ca. 31 d
Initial test substance concentration
Initial conc.:
ca. 20 other:
Based on:
test mat.

Results and discussion

Mean total recovery
Compartment:
other:
Remarks on result:
other:
% Degradationopen allclose all
% Degr.:
73.2
Parameter:
DOC removal
Sampling time:
1 d
% Degr.:
6.7
Parameter:
DOC removal
Sampling time:
4 d
% Degr.:
87.9
Parameter:
DOC removal
Sampling time:
7 d
% Degr.:
93.5
Parameter:
DOC removal
Sampling time:
11 d
% Degr.:
97.4
Parameter:
DOC removal
Sampling time:
14 d
% Degr.:
99.4
Parameter:
DOC removal
Sampling time:
18 d
% Degr.:
99.2
Parameter:
DOC removal
Sampling time:
21 d
% Degr.:
59.1
Parameter:
DOC removal
Sampling time:
25 d
% Degr.:
90.6
Parameter:
DOC removal
Sampling time:
28 d
% Degr.:
90.6
Parameter:
DOC removal
Sampling time:
30 d

Applicant's summary and conclusion

Validity criteria
Validity criteria fulfilled:
yes