AVS 60th International Symposium and Exhibition
    Advanced Surface Engineering Thursday Sessions
       Session SE+PS-ThM

Paper SE+PS-ThM10
Cold Atmospheric Plasma Assisted Production of Hydrogen

Thursday, October 31, 2013, 11:00 am, Room 203 C

Session: Pulsed Plasmas in Surface Engineering (8:00-10:00 am)/Atmospheric Pressure Plasmas (10:40 am-12:00 pm)
Presenter: L. Bardos, Uppsala University, Sweden
Authors: L. Bardos, Uppsala University, Sweden
H. Baránková, Uppsala University, Sweden
Correspondent: Click to Email
Experimental study of submerged cold atmospheric plasma generated in water and in water-based mixtures has been carried out. A hermetic stainless steel reactor with an originally designed coaxial plasma source immersed in the tested liquid has been used both with and without additional gas transported into the plasma zone. The reactor has been equipped with a pH meter, conductivity meter, thermometer, a simple pressure gauge, and a quartz fiber optics for optical emission spectroscopy of the submerged plasma. A sensor measuring the hydrogen content has been installed at the outlet of the reactor after rotameter tube measuring the outlet gas flow. The gas outlet has been provided also by a simple jet for gas flammability tests. Several types of the power generators have been tested for ignition and maintenance of the submerged plasma in the water and in water mixtures with ethanol. Preliminary experiments have confirmed production of the hydrogen containing synthesis gas that can be enhanced by adding ethanol admixtures. Very short dc pulses with average power of less than 50 W led to spontaneous formation of gas bubbles and flammable outlet gas with more than 50 % H2.