The invention regards a non-thermal (or cold) plasma source, that is, a device for generating a plasma at a relatively low temperature (e.g. around 40°C). It is known to generate plasma inside a volume filled with water, in order to subject said water to specific treatments, such as sterilization. According a known technology, in a water filled recipient, it is arranged a first electrode having a flat edge and a second electrode having sharp edge and directed towards the flat electrode; said electrodes are connected to the ground and to a HV generator, respectively, whereby corona discharges occur around the sharp electrode, thus generating a plasma treatment for the water surrounding said sharp electrode. However, said technology allows to treat only a small amount of water. Furthermore, a long time is required for securing that the whole amount of water contained in the recipient is subject to plasma treatment. This circumstance entails an additional drawback, constituted by the excessive reduction of the PH of the water under treatment, whereas a significant PH reduction is undesired in many application of sterilized water.
DEVICE AND METHOD FOR SUBJECTING A LIQUID TO PLASMA TREATMENT / V.Colombo; M. Gherardi; P. Sanibondi; A. Liguori; A. Stancampiano; R. Laurita. - (2013).
DEVICE AND METHOD FOR SUBJECTING A LIQUID TO PLASMA TREATMENT
COLOMBO, VITTORIO;GHERARDI, MATTEO;SANIBONDI, PAOLO;LIGUORI, ANNA;STANCAMPIANO, AUGUSTO;LAURITA, ROMOLO
2013
Abstract
The invention regards a non-thermal (or cold) plasma source, that is, a device for generating a plasma at a relatively low temperature (e.g. around 40°C). It is known to generate plasma inside a volume filled with water, in order to subject said water to specific treatments, such as sterilization. According a known technology, in a water filled recipient, it is arranged a first electrode having a flat edge and a second electrode having sharp edge and directed towards the flat electrode; said electrodes are connected to the ground and to a HV generator, respectively, whereby corona discharges occur around the sharp electrode, thus generating a plasma treatment for the water surrounding said sharp electrode. However, said technology allows to treat only a small amount of water. Furthermore, a long time is required for securing that the whole amount of water contained in the recipient is subject to plasma treatment. This circumstance entails an additional drawback, constituted by the excessive reduction of the PH of the water under treatment, whereas a significant PH reduction is undesired in many application of sterilized water.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
