Registration Dossier

Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

Administrative data

Endpoint:
biodegradation in water and sediment: simulation testing, other
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
3 (not reliable)
Rationale for reliability incl. deficiencies:
significant methodological deficiencies
Remarks:
Old literature. Experimental conditions were well documented, but test chemicals were not. Result analysis and evaluation were not in details. Test micro- organisms were not discussed.

Data source

Reference
Reference Type:
publication
Title:
Ability of activated sludge microorganisms to oxidize aromatic organic compounds
Author:
Marion CV, Malaney GW
Year:
1964
Bibliographic source:
IN: Proceedings of the Eighteenth Industrial Waste Conference, April 30, May 1 and 2, 1963, Purdue University; 1964:297-308.

Materials and methods

Principles of method if other than guideline:
Exposure of the activated sludge microflora to individual compounds using the conventional Warburg respirometer technique with oxygen uptake as the measure of oxidation of the compound.
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Any other information on results incl. tables

o-phenylenediamine was toxic to all three sludges tested during first 24-hour period. It remained resistant to oxidation during the 168-hr aeration period.

Applicant's summary and conclusion