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Advanced reduction and adsorption for trace organic contaminant removal from water

(2017)
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Abstract
The rising world population and overall increase in living standards creates a global pressure on the supply of clean fresh water. This is tied to an increasing use of chemicals (e.g. pesticides, pharmaceuticals, …), which may end up in the environment and our water sources as trace organic contaminants (TrOCs). In order to protect both the ecosystem and our drinking water, these TrOCs need to be removed. Established technologies applied in water treatment for TrOC removal include oxidation, activated carbon adsorption, and their combination. However, these technologies are accompanied with their drawbacks. In this PhD thesis, new technologies are introduced and investigated, in order to find out whether or not they can result in a more efficient TrOC removal. Catalytic reduction was coupled to activated carbon adsorption, where it was shown that a reductive TrOC transformation can result in enhanced subsequent removal on AC, however this was not universally the case for all TrOCs. Advanced reduction, in which highly reducing radicals are generated, resulted in an efficient removal of almost all TrOCs. Through identification of transformation products, it was observed that TrOC dehalogenation was mostly favored by hydrated electron radicals. In different water matrices, however, the efficiency of TrOC removal with advanced reduction decreased considerably. Finally, molecularly imprinted polymeric adsorbents were tested for selective TrOC removal. Target TrOCs can indeed selectively be removed, depending on the applied adsorbent and targeted TrOC class.
Keywords
UV/sulfite, hydrated electron, hydrogen atom, solvated electron, molecularly imprinted polymer, activated carbon, bio-Pd/Au, ozonation, organic micropollutant

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Citation

Please use this url to cite or link to this publication:

Chicago
Schoutteten, Klaas. 2017. “Advanced Reduction and Adsorption for Trace Organic Contaminant Removal from Water”. Ghent, Belgium: Ghent University. Faculty of Bioscience Engineering.
APA
Schoutteten, K. (2017). Advanced reduction and adsorption for trace organic contaminant removal from water. Ghent University. Faculty of Bioscience Engineering, Ghent, Belgium.
Vancouver
1.
Schoutteten K. Advanced reduction and adsorption for trace organic contaminant removal from water. [Ghent, Belgium]: Ghent University. Faculty of Bioscience Engineering; 2017.
MLA
Schoutteten, Klaas. “Advanced Reduction and Adsorption for Trace Organic Contaminant Removal from Water.” 2017 : n. pag. Print.
@phdthesis{8512514,
  abstract     = {The rising world population and overall increase in living standards creates a global pressure on the supply of clean fresh water. This is tied to an increasing use of chemicals (e.g. pesticides, pharmaceuticals, {\textellipsis}), which may end up in the environment and our water sources as trace organic contaminants (TrOCs). In order to protect both the ecosystem and our drinking water, these TrOCs need to be removed. Established technologies applied in water treatment for TrOC removal include oxidation, activated carbon adsorption, and their combination. However, these technologies are accompanied with their drawbacks.
In this PhD thesis, new technologies are introduced and investigated, in order to find out whether or not they can result in a more efficient TrOC removal. Catalytic reduction was coupled to activated carbon adsorption, where it was shown that a reductive TrOC transformation can result in enhanced subsequent removal on AC, however this was not universally the case for all TrOCs. Advanced reduction, in which highly reducing radicals are generated, resulted in an efficient removal of almost all TrOCs. Through identification of transformation products, it was observed that TrOC dehalogenation was mostly favored by hydrated electron radicals. In different water matrices, however, the efficiency of TrOC removal with advanced reduction decreased considerably. Finally, molecularly imprinted polymeric adsorbents were tested for selective TrOC removal. Target TrOCs can indeed selectively be removed, depending on the applied adsorbent and targeted TrOC class.},
  author       = {Schoutteten, Klaas},
  isbn         = {9789059899766},
  keyword      = {UV/sulfite,hydrated electron,hydrogen atom,solvated electron,molecularly imprinted polymer,activated carbon,bio-Pd/Au,ozonation,organic micropollutant},
  language     = {eng},
  pages        = {XXI, 270},
  publisher    = {Ghent University. Faculty of Bioscience Engineering},
  school       = {Ghent University},
  title        = {Advanced reduction and adsorption for trace organic contaminant removal from water},
  year         = {2017},
}