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High efficiency plasma treatment of water contaminated with organic compounds. Study of the degradation of ibuprofen
Author(s) -
Magureanu Monica,
Mandache Nicolae Bogdan,
Bradu Corina,
Parvulescu Vasile I.
Publication year - 2018
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.201700201
Subject(s) - plasma , nonthermal plasma , mineralization (soil science) , degradation (telecommunications) , chemistry , pulse duration , analytical chemistry (journal) , materials science , contamination , environmental chemistry , optics , organic chemistry , nitrogen , telecommunications , laser , ecology , physics , quantum mechanics , computer science , biology
The degradation of ibuprofen in water by nonthermal plasma is studied using a pulsed corona discharge above liquid, generated in oxygen. The influence of pulse duration (50–430 ns FWHM) on removal efficiency and on mineralization was investigated. Complete removal of the target compound was achieved within 15–20 min plasma treatment and the mineralization degree reached 76% after 60 min. The energy efficiency was greatly enhanced by reducing pulse length: 20.2 g kWh −1 was obtained for 50 ns pulses at 90% IBP removal, more than one order of magnitude higher than the value for the longest pulses. Higher initial concentration of the target compound led to further improvement of the energy yield, but required more time to complete the degradation process.