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US 12,703,018 B2Granted
Ultrafast flash joule heating synthesis methods and systems for performing same
AssigneeWilliam Marsh Rice University
InventorsJames M. Tour, Bing Deng
Life of this patent
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Abstract
Method and system for soil remediation by flash Joule heating. A contaminated soil that includes organic pollutants and/or one or more metal pollutants can be mixed with carbon black or other conductive additive to form a mixture. The mixture then undergoes flash Joule heating to clean the soil (by the decomposing of the organic pollutants and/or removing of the one or more toxic metals, such as by vaporization).
Claims29
A method of soil remediation, wherein the method comprises:
- (a) mixing contaminated soil with a conductive additive to form a mixture, wherein the contaminated soil comprises one or more pollutants;
- and
- (b) applying a voltage across the mixture utilizing a flash Joule heating process, wherein
- (i) the voltage is applied in one or more voltage pulses,
- (ii) duration of each of the one or more pulses is for a duration period,
- (iii) the one or more voltage pulses increase the temperature of the mixture to at least 1000 K, and
- (iv) the application of the voltage across the mixture decomposes and/or removes the pollutants from the contaminated soil to form remediated soil, wherein the application of the voltage across the mixture to decompose and/or remove the pollutants is performed without using a solvent to apply the voltage.
4 more elements
A method of soil remediation, wherein the method comprises:
- (a) mixing contaminated soil with a conductive additive to form a mixture, wherein the contaminated soil comprises one or more pollutants;
- and
- (b) applying a voltage across the mixture utilizing a flash Joule heating process, wherein
- (i) the voltage is applied in one or more voltage pulses,
- (ii) duration of each of the one or more pulses is for a duration period,
- (iii) the application of the voltage across the mixture decomposes and/or removes the pollutants from the contaminated soil to form remediated soil, wherein the application of the voltage across the mixture to decompose and/or remove the pollutants is performed without using a solvent to apply the voltage,
- (iv) the one or more pollutants are one or more organic pollutants, and
- (v) the one or more organic pollutants comprise one or more per- and polyfluoroalkyl substances (PFAS).
5 more elements
A method of soil remediation, wherein the method comprises:
- (a) mixing contaminated soil with a conductive additive to form a mixture, wherein the contaminated soil comprises one or more pollutants;
- and
- (b) applying a voltage across the mixture utilizing a flash Joule heating process, wherein
- (i) the voltage is applied in one or more voltage pulses,
- (ii) duration of each of the one or more pulses is for a duration period,
- (iii) the duration period of each of the one or more voltage pulses is between 1 microsecond and 20 seconds, and
- (iv) the application of the voltage across the mixture decomposes and/or removes the pollutants from the contaminated soil to form remediated soil, wherein the application of the voltage across the mixture to decompose and/or remove the pollutants is performed without using a solvent to apply the voltage.
4 more elements
Dependencies are inferred from the claim text.