PFAS PROCESSING
The processing of PFAS to convert them into safer substances comprises introducing gaseous or vapour phase PFAS into a treatment zone where microwave radiation of predetermined frequency and power level creates a plasma which at least partially dissociates the PFAS. There is also a system for remedi...
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| creator | McLEAN, David William |
| description | The processing of PFAS to convert them into safer substances comprises introducing gaseous or vapour phase PFAS into a treatment zone where microwave radiation of predetermined frequency and power level creates a plasma which at least partially dissociates the PFAS. There is also a system for remediating particulate solids, particularly soil, contaminated with PFAS, the method including directing microwave radiation to a body of particulate solids in the closed vessel so as to promote vaporization of PFAS which are then treated by exposure to the microwave produced plasma. Continuous and batch processing apparatus are disclosed. A preheating stage can dry the particulate solids to a pre-determined moisture content, and then a higher energy microwave heating promotes vaporization of PFAS. A partial vacuum created where particulate solids heated by the microwave radiation are yielding up PFAS promotes the vaporization of PFAS. Alternating cycles of high pressure during microwave irradiation and low pressure or partial vacuum can avoid plasma generation in the heating stage while optimizing vaporization of PFAS from the particulate solids. |
| format | Patent |
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There is also a system for remediating particulate solids, particularly soil, contaminated with PFAS, the method including directing microwave radiation to a body of particulate solids in the closed vessel so as to promote vaporization of PFAS which are then treated by exposure to the microwave produced plasma. Continuous and batch processing apparatus are disclosed. A preheating stage can dry the particulate solids to a pre-determined moisture content, and then a higher energy microwave heating promotes vaporization of PFAS. A partial vacuum created where particulate solids heated by the microwave radiation are yielding up PFAS promotes the vaporization of PFAS. Alternating cycles of high pressure during microwave irradiation and low pressure or partial vacuum can avoid plasma generation in the heating stage while optimizing vaporization of PFAS from the particulate solids.</description><language>eng ; fre ; ger</language><subject>BASIC ELECTRIC ELEMENTS ; DISPOSAL OF SOLID WASTE ; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ; ELECTRIC HEATING ; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ; ELECTRICITY ; PERFORMING OPERATIONS ; PLASMA TECHNIQUE ; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS ; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS ; RECLAMATION OF CONTAMINATED SOIL ; RECLAMATION OF CONTAMINED SOIL SOIL ; TRANSPORTING</subject><creationdate>2024</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240117&DB=EPODOC&CC=EP&NR=4090478A4$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240117&DB=EPODOC&CC=EP&NR=4090478A4$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>McLEAN, David William</creatorcontrib><title>PFAS PROCESSING</title><description>The processing of PFAS to convert them into safer substances comprises introducing gaseous or vapour phase PFAS into a treatment zone where microwave radiation of predetermined frequency and power level creates a plasma which at least partially dissociates the PFAS. There is also a system for remediating particulate solids, particularly soil, contaminated with PFAS, the method including directing microwave radiation to a body of particulate solids in the closed vessel so as to promote vaporization of PFAS which are then treated by exposure to the microwave produced plasma. Continuous and batch processing apparatus are disclosed. A preheating stage can dry the particulate solids to a pre-determined moisture content, and then a higher energy microwave heating promotes vaporization of PFAS. A partial vacuum created where particulate solids heated by the microwave radiation are yielding up PFAS promotes the vaporization of PFAS. Alternating cycles of high pressure during microwave irradiation and low pressure or partial vacuum can avoid plasma generation in the heating stage while optimizing vaporization of PFAS from the particulate solids.</description><subject>BASIC ELECTRIC ELEMENTS</subject><subject>DISPOSAL OF SOLID WASTE</subject><subject>ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS</subject><subject>ELECTRIC HEATING</subject><subject>ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR</subject><subject>ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR</subject><subject>ELECTRICITY</subject><subject>PERFORMING OPERATIONS</subject><subject>PLASMA TECHNIQUE</subject><subject>PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS</subject><subject>PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS</subject><subject>RECLAMATION OF CONTAMINATED SOIL</subject><subject>RECLAMATION OF CONTAMINED SOIL SOIL</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2024</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOAPcHMMVggI8nd2DQ729HPnYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxrgEmBpYGJuYWjibGRCgBALJXHOs</recordid><startdate>20240117</startdate><enddate>20240117</enddate><creator>McLEAN, David William</creator><scope>EVB</scope></search><sort><creationdate>20240117</creationdate><title>PFAS PROCESSING</title><author>McLEAN, David William</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP4090478A43</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2024</creationdate><topic>BASIC ELECTRIC ELEMENTS</topic><topic>DISPOSAL OF SOLID WASTE</topic><topic>ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS</topic><topic>ELECTRIC HEATING</topic><topic>ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR</topic><topic>ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR</topic><topic>ELECTRICITY</topic><topic>PERFORMING OPERATIONS</topic><topic>PLASMA TECHNIQUE</topic><topic>PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS</topic><topic>PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS</topic><topic>RECLAMATION OF CONTAMINATED SOIL</topic><topic>RECLAMATION OF CONTAMINED SOIL SOIL</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>McLEAN, David William</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>McLEAN, David William</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>PFAS PROCESSING</title><date>2024-01-17</date><risdate>2024</risdate><abstract>The processing of PFAS to convert them into safer substances comprises introducing gaseous or vapour phase PFAS into a treatment zone where microwave radiation of predetermined frequency and power level creates a plasma which at least partially dissociates the PFAS. There is also a system for remediating particulate solids, particularly soil, contaminated with PFAS, the method including directing microwave radiation to a body of particulate solids in the closed vessel so as to promote vaporization of PFAS which are then treated by exposure to the microwave produced plasma. Continuous and batch processing apparatus are disclosed. A preheating stage can dry the particulate solids to a pre-determined moisture content, and then a higher energy microwave heating promotes vaporization of PFAS. A partial vacuum created where particulate solids heated by the microwave radiation are yielding up PFAS promotes the vaporization of PFAS. Alternating cycles of high pressure during microwave irradiation and low pressure or partial vacuum can avoid plasma generation in the heating stage while optimizing vaporization of PFAS from the particulate solids.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | BASIC ELECTRIC ELEMENTS DISPOSAL OF SOLID WASTE ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY PERFORMING OPERATIONS PLASMA TECHNIQUE PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS RECLAMATION OF CONTAMINATED SOIL RECLAMATION OF CONTAMINED SOIL SOIL TRANSPORTING |
| title | PFAS PROCESSING |
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