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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
Study period:
1984
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1984
Report date:
1984

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 303 A (Simulation Test - Aerobic Sewage Treatment. A: Activated Sludge Units)
GLP compliance:
no

Test material

Constituent 1
Reference substance name:
Sodium diisobutylnaphthalenesulphonate
EC Number:
248-326-4
EC Name:
Sodium diisobutylnaphthalenesulphonate
Cas Number:
27213-90-7
Molecular formula:
Not applicable (UVCB substance)
IUPAC Name:
sodium 2,3-bis(2-methylpropyl)naphthalene-1-sulfonate
Test material form:
solid: particulate/powder

Study design

Inoculum or test system:
activated sludge (adaptation not specified)
Duration of test (contact time):
30 d
Initial test substance concentration
Initial conc.:
156.3 mg/L
Based on:
test mat.

Results and discussion

% Degradation
% Degr.:
67.3
Parameter:
TOC removal
Sampling time:
21 d
Remarks on result:
other: St. dev. not available
Transformation products:
not specified

Applicant's summary and conclusion

Conclusions:
In this assay the biological removal of the substance is of 67.3% after 21 days. However results from tests simulating the condition in a sewage treatment plant (STP) cannot be used for assessing the degradation in the aquatic environment.

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