Registration Dossier
Registration Dossier
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EC number: 208-594-5 | CAS number: 534-22-5
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: screening test, other
- Remarks:
- anaerobic degradation
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- no data
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
Data source
Reference
- Reference Type:
- publication
- Title:
- Microbial degradation of nitrogen, oxygen and sulfur heterocyclic compounds under anaerobic conditions: studies with aquifer samples
- Author:
- Kuhn, E. & J. Suflita.
- Year:
- 1 989
- Bibliographic source:
- U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-89/353
- Report date:
- 1989
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- The anaerobic biodegradation under sulfate-reducing and methanogenic-conditions were assessed at lab scale using aquifer samples
- GLP compliance:
- not specified
Test material
- Reference substance name:
- 2-methylfuran
- EC Number:
- 208-594-5
- EC Name:
- 2-methylfuran
- Cas Number:
- 534-22-5
- Molecular formula:
- C5H6O
- IUPAC Name:
- 2-methylfuran
Constituent 1
Study design
- Oxygen conditions:
- anaerobic
- Inoculum or test system:
- natural sediment: freshwater
- Details on inoculum:
- - Aquifer solids and site water sampled from 2 well-characterized sites adjacent to the Normann municipal landfill.
- Methanogenic site: 1.35m below surface, temperature 18.3°C, pH of 6.8, TOC = 288 mg/L, sulfate concentration < 0.1 mM
- Sulfate-reducing site: 1.15m below surface, temperature 15.6°C, pH of 7.2; TOC = 14.4 mg/L, sulfate concentration of 2.1 mM - Duration of test (contact time):
- 8 mo
Initial test substance concentration
- Initial conc.:
- 0.2 mmol/L
- Based on:
- test mat.
Parameter followed for biodegradation estimationopen allclose all
- Parameter followed for biodegradation estimation:
- test mat. analysis
- Remarks:
- substrate remaining
- Parameter followed for biodegradation estimation:
- CH4 evolution
- Remarks:
- CH4 formation
Results and discussion
% Degradationopen allclose all
- Parameter:
- % degradation (test mat. analysis)
- Value:
- 0
- Sampling time:
- 1 mo
- Remarks on result:
- other: sulfate-reducing aquifer slurries
- Parameter:
- % degradation (test mat. analysis)
- Value:
- 71
- Sampling time:
- 3 mo
- Remarks on result:
- other: sulfate-reducing aquifer slurries
- Parameter:
- % degradation (test mat. analysis)
- Value:
- 66
- Sampling time:
- 8 mo
- Remarks on result:
- other: sulfate-reducing aquifer slurries
- Parameter:
- % degradation (test mat. analysis)
- Value:
- 0
- Sampling time:
- 1 mo
- Remarks on result:
- other: methanoganic aquifer slurries
- Parameter:
- % degradation (test mat. analysis)
- Value:
- 0
- Sampling time:
- 3 mo
- Remarks on result:
- other: methanoganic aquifer slurries
- Parameter:
- % degradation (test mat. analysis)
- Value:
- 0
- Sampling time:
- 8 mo
- Remarks on result:
- other: methanoganic aquifer slurries
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not applicable
- Interpretation of results:
- other:
- Remarks:
- anaerobic biodegradation is only observed in the sulfate-reducing aquifer slurries. No anaerobic biodegradation is observed in methanogenic aquifer slurries
- Conclusions:
- The substance 2-methylfuran showed anaerobic biodegradation under sulfate-reducing conditions: roughly 70 % degraded within 3 months of exposure. Under methanoganic conditions, no anaerobic biodegradation was observed.
- Executive summary:
The potential anaerobic biodegradation of 2 -methylfuran was studied under sulfate-reducing or methanogenic conditions in aquifer slurries. The disappearance of the substance was assessed over 8 month-period.
The substance 2-methylfuran showed anaerobic biodegradation under sulfate-reducing conditions: roughly 70 % degraded within 3 months of exposure. Under methanoganic conditions, no anaerobic biodegradation was observed.
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