Concentrations of substituted diphenylamine antioxidants (SDPAs) and benzotriazole UV stabilizers (BZT UVs) in Canadian Wastewater Treatment Plant influent, effluent and biosolids

Substituted diphenylamine antioxidants (SDPAs) and benzotriazole UV stabilizers (BZT-UVs) are additives used in industrial and consumer products to prevent degradation or colour change of materials, but their environmental fate and disposition are not well characterized. In this study, SDPAs and BZT-UVs were analyzed in liquid and solid samples collected from wastewater treatment plants (WWTPs) in Canada to investigate the occurrence and fate of these contaminants. SDPAs and BZT-UVs were effectively removed from the liquid stream in most WWTPs mainly through sludge sorption and separation, but biotransformation, UV treatment and filtration may also contribute to removal of some contaminants in advanced treatment plants. In contrast, the removal efficiency of target contaminants using chemically assisted primary treatment was low, likely due to the short hydraulic retention time of this site. Our results suggest that wastewater effluent is a vector of SDPAs and BZT-UVs to the aquatic environment. The results also highlight the high concentrations of SDPAs and BZT-UVs associated with the solid stream in WWTPs, which could affect the beneficial use of biosolids (e.g., compost or land applications).

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Metadata Record Information

File Identifier
07483698-6eed-428e-9a6a-103cf6247b44 XML
Date Stamp
2022-11-07T18:50:10
Metadata language

eng; CAN
Character set
UTF8
Hierarchy Level
Dataset
Point of contact
  Government of Canada; Environment and Climate Change Canada; Science and Technology Branch / Water Science and Technology / Aquatic Contaminants Research Division - ACRD Data Management Team
867 Lakeshore Rd. , Burlington , Ontario , L7S 1A1 , Canada
 

Data identification

Date (Publication)
2018-05-04
Date (Creation)
2018-05-04
Status
Completed
Metadata language

eng; CAN
Character set
UTF8
Topic category
  • Environment
Maintenance and Update Frequency
Not planned
Spatial representation type
Text, table
Principal investigator
  Government of Canada; Environment and Climate Change Canada; Science and Technology Branch / Water Science and Technology / Aquatic Contaminants Research Division - Dr. Amila De Silva ( Research scientist )
867 Lakeshore Rd. , Burlington , Ontario , L7S 1A1 , Canada
Collaborator
  Government of Canada; Environment and Climate Change Canada; Science and Technology Branch / Science and Risk Assessment Directorate / Emerging Priorities Division - Shirley Anne Smyth ( Engineer )
867 Lakeshore Rd. , Burlington , Ontario , L7S 1A1 , Canada

Keywords

Theme

  • Substituted diphenylamine antioxidants (SDPAs)

  • Observation/Measurement

  • Benzotriazole UV stabilizer (BZT-UVs)

  • Wastewater treatment plant

  • Biosolid

  • Chemicals Management Plan (CMP)

  • Wastewater Monitoring Program

  • Contaminants

Government of Canada Core Subject Thesaurus

  • Biochemicals

ECCC Information Category EN

  • Nature and Biodiversity - Contaminants

Business Functions

  • Assess Toxicity, Manage and Monitor for Environmental Presence of Hazardous Substances and Waste

  • Monitor / Assess Substance and Waste Levels in Air, Water, Soil, Biota

Geography

  • National (CA)

Branch

  • Science and Technology Branch

Directorate

  • Water Science and Technology

Program (PAA)

  • 1.2.1. Water Quality and Aquatic Ecosystems Health

GC Security Level

  • Unclassified
 
Use Limitation

Open Government Licence - Canada ( http://open.canada.ca/en/open-government-licence-canada )

Access Constraints
License
Use Constraints
License
Begin Date
2013-01-01
End Date
2015-12-31

Extent

N
S
E
W
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Ref. system Reference Systems

Reference system identifier
http://www.epsg-registry.org / EPSG:4326 /
 

Distribution

Distribution Formats

Distribution format
  • CSV ( 1 )

 
Distributor
  Government of Canada; Environment and Climate Change Canada - Public inquiries centre
Fontaine Building 12th floor, 200 Sacré-Coeur Blvd. , Gatineau , Quebec , K1A 0H3 , Canada
1-800-668-6767
https://www.canada.ca/
 
 

Overviews

N
S
E
W
thumbnail


Keywords

Benzotriazole UV stabilizer (BZT-UVs) Biosolid Chemicals Management Plan (CMP) Contaminants Observation/Measurement Substituted diphenylamine antioxidants (SDPAs) Wastewater Monitoring Program Wastewater treatment plant
Branch
Science and Technology Branch
Business Functions
Assess Toxicity, Manage and Monitor for Environmental Presence of Hazardous Substances and Waste Monitor / Assess Substance and Waste Levels in Air, Water, Soil, Biota
Directorate
Water Science and Technology
ECCC Information Category EN
Nature and Biodiversity - Contaminants
GC Security Level
Unclassified
Government of Canada Core Subject Thesaurus
Biochemicals
Program (PAA)
1.2.1. Water Quality and Aquatic Ecosystems Health

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