Journal
IEEE TRANSACTIONS ON PLASMA SCIENCE
Volume 39, Issue 12, Pages 3358-3363Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPS.2011.2171374
Keywords
Adsorption; perfluoro compounds (PFCs); perfluorooctane sulfonic acid (PFOS); plasma on water; surfactant
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Funding
- Ministry of the Environment, Japan [K2324]
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Perfluorooctane sulfonic acid (PFOS) is an environmentally harmful and persistent substance, and thus, effluent controls have been applied. The decomposition of PFOS in water using plasma attached to the water surface has been successfully performed, and the resulting energy efficiency is relatively high compared to that of other methods such as sonochemical processes. The estimation of the amount of PFOS adsorbing to the plasma-water interface showed much higher mole fraction of PFOS (6.0 x 10(-4)) than that in bulk water (1.8 x 10(-6)) at a PFOS bulk concentration of 50 mg/L. Thus, the plasma can effectively react with PFOS at the water surface and exhibits high energy efficiency.
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