METODA BARU UNTUK DEKONTAMINASI BAKTERI DENGAN PLASMA NON TERMIK PADA TEKANAN ATMOSFER (New Method for Bacterial Decontamination by Using Atmospheric Non Thermal Plasma)

Abstract

New method for bacteria decontamination by using glow discharge corona non-thermal atmospheric plasma has been developed and tested. Plasma was generated in a reactor plasma positive corona with electrodes geometry point to plan configuration. Point electrode. This plasma has been generated in air with threshold corona voltage was 3.0 kV inter electrodes distance was 0.4 cm and current was 1.5 mA. Sterilitization test has been done by bacteria Escherichia coli decontamination. These bacteria were planted in EA (Merck) medium glass cup with diameter of 10 cm. Corona glow discharge plasma decreased number of microorganism coloni (CFU/ml) in the surface of cup. The result shown that this system killed 96.8 % of bacteria population after 100 second of plasma radiation. The energy comsumtion of plasma decontamination system was smaller than energy consumtion of UV decontamination.