Registration Dossier
Registration Dossier
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EC number: 204-465-2 | CAS number: 121-33-5
Monitoring data
Administrative data
- Endpoint:
- monitoring data
- Type of information:
- experimental study
- Adequacy of study:
- disregarded due to major methodological deficiencies
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Study well documented, meets generally accepted scientific principles.
Data source
Reference
- Reference Type:
- publication
- Title:
- Identification of organic compounds in unbleached treated kraft paper mill wastewaters.
- Author:
- KEITH LH
- Year:
- 1 976
- Bibliographic source:
- Environ. Sci. Technol., 10 (6),555-564.
Materials and methods
- Principles of method if other than guideline:
- GC-MS analysis of paper mill wastewater before and after treatment
- GLP compliance:
- not specified
- Type of measurement:
- concentration at contaminated site
- Media:
- other: kraft paper mill wastewaters
Test material
- Reference substance name:
- Vanillin
- EC Number:
- 204-465-2
- EC Name:
- Vanillin
- Cas Number:
- 121-33-5
- Molecular formula:
- C8H8O3
- IUPAC Name:
- 1-butoxypropan-2-ol
- Details on test material:
- no data
Constituent 1
Study design
- Details on sampling:
- - Geographic coordinates: Georgia, US
- Known emission sources near sampling site: paper mills
- Period of sampling: 1974 (three-day composite samples)
- Sampling:
Two different effluent paper mills were sampled. Paper mills were characterised by similar process but different waste treatment.
* Paper Mill "A"; 49 000 metre-square of water passed through the treatment system daily. The wastewater treatment system was: Raw influent /
primary clarifier (5 hours) / trickling biofilter and secondary clarifier (3h) / aerated lagoon (2 days) = Treated effluent.
* Paper Mill "B"; 21 000 metre-square of water passed through the treatment system daily. The wastewater treatment system was: Raw influent /
lime floculation (40 min) / clarifier (6-8 h) / quiescent storage basin (3-6 months) = Treated effluent.
Three-day composite samples, composed of equal volumes, were collected both for raw and treated effluents for both paper mills.
- Sample storage before analysis:
Effluent samples were placed in polyethylene plastic containers, immediately frozen and stored at -10 deg.C until analysis
Results and discussion
Any other information on results incl. tables
The analytical data obtained for 3-day composite samples were in mg/l:
Paper mill "A" Paper mill "B"
Raw effluent 0.844 1.268
Treated effluent 0.291 0.092
Treatment efficiency (%) 65 93
Applicant's summary and conclusion
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