Method and Device for Disinfection of Liquid
| Publication Number: | EP3981743 |
| Application Date: | 7. 10. 2020 |
| Assignee/Applicant: | Jožef Stefan Institute [SI], University of Ljubljana, NAT Institute of Biology |
| Inventor: | Primc Gregor, Zaplotnik Rok, Mozetic Miran, Filipic Arijana, Gutierrez Aguirre Ion, Dobnik David, Dular Matevz, Petkovšek Martin |
| Title: | Method and Device for Disinfection of Liquid |
| Description: |
The invention relates to methods for energy-efficient disinfection or sterilisation of contaminated liquid, such as water contaminated with viruses or microbes. An asymmetric configuration of a cavitation nozzle made from dielectric material enables the formation of a permanent supercavitation bubble of a large volume. A low-pressure gaseous plasma is formed inside said supercavitation bubble by one or more electrodes mounted within the supercavitation bubble to prevent contact of the metallic electrode with liquid water and thus Ohmic heating of the contaminated water. The electrodes are connected to a high voltage power supply with an amplitude of the order of at least 300 V. Since there is an almost time-independent low pressure in the said supercavitation bubble, the power supply enables formation of a stable gaseous discharge inside the supercavitation bubble and thus formation of both radicals and radiation useful for destruction of viruses to the levels below the current US EPA standard in few minutes, while the temperature of liquid water remains practically unchanged. The electricity consumption for 4 log reduction of a virus is below kWh per m3 of contaminated water, which makes the invention useful not only for hospitals and pharmaceutical companies but the food industry and agriculture as well.
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| Drawings: |  |
| Category: | Nanotechnology and New Materials |
| Technology application codes: | Biological sciences |
| Market application codes: | Medical / health related |
| www: | https://patentscope.wipo.int/search/en/detail.jsf?docId=EP357579537&_cid=P11-M5WE9B-33222-3 |
| Patent offices: | WIPO |
Extended patent application
| Publication Number: | US20220106206 |
| Application Date: | 6. 10. 2021 |
| Assignee/Applicant: | Jožef Stefan Institute [SI], University of Ljubljana, NAT Institute of Biology |
| Inventor: | Primc Gregor, Zaplotnik Rok, Mozetic Miran, Filipic Arijana, Gutierrez Aguirre Ion, Dobnik David, Dular Matevz, Petkovšek Martin |
| Title: | Method and Device for Disinfection of Liquid |
| www: | https://patentscope.wipo.int/search/en/detail.jsf?docId=US356967230&_fid=EP357579537 |