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Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
key study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2002
Report date:
2002

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
ISO 14593:1999 (Water quality - Evaluation of ultimate aerobic biodegradability of organic compounds in aqueous medium - Method by analysis of inorganic carbon in sealed vessels (CO2 headspace test))
Deviations:
no

Test material

Constituent 1
Test material form:
liquid

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic, non-adapted
Duration of test (contact time):
28 d
Initial test substance concentrationopen allclose all
Initial conc.:
25.2 mg/L
Based on:
test mat.
Initial conc.:
20 mg/L
Based on:
other:

Results and discussion

% Degradation
Key result
Parameter:
% degradation (CO2 evolution)
Value:
76
Sampling time:
28 d
Remarks on result:
other:

Applicant's summary and conclusion

Validity criteria fulfilled:
yes