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Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

Endpoint:
biodegradation in water: screening tests
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2007
Report Date:
2007

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: ISO 18749: Water quality - Adsorption of substances on activated sludge - Batch test using specific analytical methods.
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Substance No.: 06/0588-2
Purity: 2 aqueous solutions, containing 14 and 24.5 mg/kg Fe(CO)5

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic (adaptation not specified)
Duration of test (contact time):
48 h

Results and discussion

Details on results:
Results of iron analysis (Fe in mg/kg):

Test Control Solution 1 Solution 2
duration
-----------------------------------------------------------
3 h <0.5 <0.5 <0.5
24 h <0.5 <0.5 <0.5
48 h <0.5 <0.5 <0.5


Degree of adsorption of Pentacarbonyliron on activated sludge after 3 hours:
Test 1: >85%
Test 2: >91%

Applicant's summary and conclusion

Interpretation of results:
other: Easily eliminable from water by adsorption on activated sludge