Methods for decomposing partially fluorinated and perfluorinated surfactants
First Claim
1. A method comprising decomposing partially fluorinated and perfluorinated surfactants (PFSs) which are, in particular, present in wastewater and sewage sludges, wherein the surfactant is present in at least one of solution and suspension and is electrolytically decomposed, and wherein the decomposition is effected by anodic oxidation which takes place at an anode consisting of at least one of titanium, platinum-plated titanium, lead and lead alloy.
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Abstract
In a method of decomposing partially fluorinated and perfluorinated surfactants which are, in particular, present in wastewater, sewage sludges and the like, the surfactant is present in solution or suspension and is electrolytically decomposed. An anodic oxidation of the surfactants preferably takes place here. The method is particularly suitable for decomposing perfluorinated alkylsulfonates, in particular PFOS.
The invention also describes an apparatus for electrolytically decomposing partially fluorinated and perfluorinated surfactants.
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14 Claims
- 1. A method comprising decomposing partially fluorinated and perfluorinated surfactants (PFSs) which are, in particular, present in wastewater and sewage sludges, wherein the surfactant is present in at least one of solution and suspension and is electrolytically decomposed, and wherein the decomposition is effected by anodic oxidation which takes place at an anode consisting of at least one of titanium, platinum-plated titanium, lead and lead alloy.
Specification