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Chlorination and Photolysis of Pharmaceutical and Personal Care Product (PPCP) Pollutants

Recently, concern has grown regarding the presence of pharmaceutical   and personal care product (PPCP) pollutants in aquatic systems. It   is likely that many will undergo reactions with free chlorine during   disinfection in water treatment or photo-degradation in surface   waters, yielding products that may retain or acquire elevated levels   of biological activity/toxicity. Triclosan, a common anti-microbial   agent, was chosen as a target PPCP to study since it has been shown   to chlorinate under wastewater disinfection conditions and to   photolyze to form toxic 2,8-dibenzodioxin upon irradiation.    One aim is to investigate the photochemistry of chlorinated   triclosan derivatives (CTDs) to determine whether toxic chlorinated   dioxins are generated. Another goal is to determine if CTDs are   produced from triclosan during disinfection with free chlorine and   if chlorinated dioxins subsequently form upon irradiation at a   detectable level in the environment.    (personal care products); (PPCP); (PPCP's); (PPCPs);   (pharmaceuticals); (pharmaceutical); (personal care product);   (chemicals of concern); (chemical of concern); (human health);   (chemicals of emerging concern); (chemical of emerging concern);   (wastewater); (triclosan); (triclosans); (dioxin); (dioxins); (CTD);   (CTD's); (CTDs); (chlorinated triclosan derivative); (chlorinated   triclosan derivatives); (toxic organic); (toxic organics)

In progress
Start Date
End Date
Jeffrey M. ButhPrincipal Investigator
Associated with 1 projects
Environmental Protection Agency $ 111,172.00USDActual

Funding 21 projects for a total of $7,345,444.00
Scope of Study
Field Investigation
Laboratory Investigation
Scale of Phenomena
Impact of Pollutants
Toxic Organics
Treatment / Manufacturing Processes
State Province
Resource Being Monitored
Emission / Release / Discharge / Waste Management
Human Health
Beneficial Use Impairment Assessments
Compliance with Environmental Quality Objectives
Restrictions on Drinking Water Consumption or Taste and Odour Problems
Annex Numbers
Persistent Toxic Substances
Research & Development
Specific Objectives for toxic substances and effluents
  • Annex Numbers
    Annex Numbers
    Persistent Toxic Substances
    Research & Development
    Specific Objectives for toxic substances and effluents
  • Annex 17

The Great Lakes - St. Lawrence Research Inventory is an
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up-to-date information about research projects in the
Great Lakes - St. Lawrence Region.