Roeland Van Muylder
Mr. Roeland Van Muylder is Bio-science engineer and Project Manager Environment at Witteveen + Bos Belgium N.V. He has more then seven years experience in technical consultancy for several consultancy companies. Since 2013 he's working at Witteveen + Bos as a consultant and project manager on environmental studies. He has an expertise on emerging contaminants, polluted sediments and remediation of gas works. His projects range from research to implementation with often an integral and / or innovative character. He also supports various international projects as an expert.
1,4-Dioxane and 1,3-Dioxolane: Presence and Mobility of Contaminants of Emerging Concern in Groundwater at 1,1,1-Trichloroethane Polluted Sites in Flanders, Belgium
Chlorinated solvents have played an important role in the degreasing process of manufactured metal products. To improve the stability of these solvents, stabilizers were added to prevent corrosion on metal surfaces. 1,4-dioxane and 1,3-dioxolane have been widely used as stabilizers of 1,1,1-trichloroethane (methyl chloroform) in quantities up to 16% and 3% respectively. For that reason, 1,4-dioxane and 1,3-dioxolane are expected co-pollutants at 1,1,1-TCA contaminated sites.
The physical and chemical properties and behaviour of 1,4-dioxane in the environment create challenges for its characterization and treatment. 1,4-dioxane is highly mobile and has not been shown to readily biodegrade in the environment. 1,4-dioxane is also toxic to humans.
Since soil and groundwater investigation in Flanders, Belgium, has focused on the key pollutants such as petroleum hydrocarbons and chlorinated solvents, little is known about the presence and potential risk of additives to groundwater systems throughout Europe and Belgium.