Key result
A positively-charged carbon felt electrode effectively adsorbed polioviruses, drastically decreasing the tissue culture infective dose and viral genome copy numbers in water.
A positively-charged carbon felt electrode effectively removes suspended poliovirus from water, demonstrating potential for water purification systems.
May support electrode-based viral water purification; leaves open real-world efficacy and scalability.
We developed an effective system to eliminate poliovirus from modified tap water using a positively-charged carbon felt electrode. The zeta potential of polioviruses was measured using laser microscopic electrophoresis. Poliovirus adsorption to the electrode was examined by indirect immunofluorescence. The tissue culture infective dose (TCID) of poliovirus type 2 (Sabin strain) was determined using human rhabdomyosarcoma cells (RD cells). Poliovirus VP2 gene copy numbers were assessed by reverse transcription followed by a quantitative real-time polymerase chain reaction. The mean zeta potential of the viruses was -20 mV. Relatively large numbers of polioviruses (10(3) or 4 x 10(3) TCID(50)/0.1 ml) could be removed by adsorption to the electrode, drastically decreasing TCID and copy numbers of poliovirus genome in the water. Virus elimination was dependent on electric current and time. Thus, the positively-charged carbon felt electrode effectively adsorbed polioviruses. The system may prove applicable to the elimination of certain viruses from water.
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Kondo et al. (2004) studied Poliovirus contamination in water. Positively-charged carbon felt electrode was evaluated on Poliovirus removal (TCID and VP2 gene copy numbers). A positively-charged carbon felt electrode effectively adsorbed polioviruses, drastically decreasing the tissue culture infective dose and viral genome copy numbers in water.
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