Purification methods and systems for contaminated liquids and mineral slurries
The present disclosure describes methods and systems comprising hydrodynamic cavitation, microwave irradiation, and at least one of oxidative sonoelectrolysis and reductive sonoelectrolysis, providing feedstock purification of at least one of water, fluid and mineral. Contaminants, broken down and chemically degraded into smaller and more volatile substances by hydrodynamic cavitation are ultimately destroyed in the course of one or more sonoelectrolysis steps. In various embodiments, at least one of oxidative sonoelectrolysis and reductive sonoelectrolysis is irradiated with microwaves in order to heat the sonoplasma present within acoustic cavitation bubbles to temperatures sufficient to destroy contaminants therein.
1. A method of purifying a feedstock, said method comprising:
(a) providing a feedstock comprising at least one material to be purified; and,
(b) exposing said feedstock to the discrete steps of:
1) hydrodynamic cavitation;
2) simultaneous oxidative sonoelectrolysis and microwave radiation; and
3) simultaneous reductive sonoelectrolysis and microwave radiation;
wherein the step 1) precedes both steps 2) and 3), and
wherein said method produces a product stream comprising the material compositionally changed relative to said feedstock.
2. The method of claim 1 , wherein the step 2) precedes the step 3).
3. The method of claim 1 , wherein said feedstock comprises at least one of contaminated water, a fluid, a mineral ore, sand, or a mineral deposit.
4. The method of claim 1 , wherein said feedstock comprises contaminated water and said compositionally changed material comprises potable water.
5. The method of claim 1 , wherein said feedstock comprises a mineral ore and said compositionally changed material comprises at least one pure metallic element.
6. The method of claim 5 , wherein the mineral ore is crushed and/or ground to a particular particle size and suspended in a liquid carrier to form said feedstock.
7. The method of claim 6 , wherein said at least one pure metallic element is chosen from the group consisting of Ag, Au, Cu, Al, Si, Ni, and mixtures thereof.
8. The method of claim 1 , wherein the step 3) precedes the step 2).