Underwater capillary discharge on the penetrability of a membrane

• Published in: Surface & coatings technology Vol. 228; pp. S482 - S485
• Main Authors: Kim, Ye Jin, Hong, Yong Cheol, Lee, Sang Ju, Kim, Ji Hun, Lee, Bong Ju
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 15.08.2013; Elsevier
• Subjects: Ballast water; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Filtration; Materials science; Physics; Plasma treatment; Surface treatments; Underwater discharge; Filtration; Underwater discharge; Plasma treatment; Ballast water; Plasma; Membranes; Surface treatments
• ISSN: 0257-8972; 1879-3347
• DOI: 10.1016/j.surfcoat.2012.05.013

This paper presents the enhancement of membrane penetrability by means of a discharge in water. The system is composed of an underwater capillary discharge to produce the various plasma species containing OH, O, H, Na+, Cl−, ClO−, Cl2, etc., and a membrane for water filtration. We investigate the capillary discharge membrane system to treat the microorganisms and particles in seawater simultaneously. We also report the effects of the underwater capillary discharge on the membrane flux. The plasma by-products also depend on the discharge polarity significantly. Eventually, we expect that the hybrid system may be promising tool for sterilization of microorganisms and removal of particles in water. ► The power supply is operated at a 60Hz, 0.78μF, a diode and a resistor (100Ω). ► These components provide a half-wave rectification circuit. ► A voltage adjustor regulates the secondary voltage by controlling the primary voltage of the transformer. ► Arrangement drives the rectified voltage waveform to the electrode.