System and methods are disclosed with a holding tank to receive liquid and cryogenically frozen biomass; a cavitator to generate shock waves and pressure variations, wherein the shock waves and pressure variations are to the biomass and the liquid to separate oil from the biomass; a sensor to determine when oil concentration exceeds a threshold; and a valve to transfer the oil and liquid to an oil tank when the threshold is met.

A method of inhibiting degradation of an extractant by utilizing several auxiliary means in the DSX process: includes (a) preparing adjustment of the concentration of an extractant of a DSX solvent to a certain range; (b) extracting a metal contained in a pregnant leached solution by adjusting the ratio of the extractant and the diluent in the DSX solvent to a certain range; (c) measuring the pH of the aqueous phase solution by separating mixture into the aqueous phase solution and the organic phase solvent using a settler after step of extracting; (d) controlling the pH by adding soda ash (Na.sub.2CO.sub.3) so as to maintain the pH of the aqueous phase solution to be 3 to 7; and (e) scrubbing with scrubbing solution having a zinc concentration of 2 to 20 g/L by zinc sulfate (ZnSO.sub.4) to remove the manganese from the organic phase solvent containing the extracted metal.

A sample purification system includes a container assembly bounding a sample purification compartment and having an upper end and an opposing lower end, the sample purification compartment comprising mixing zones and settling zones. A plurality of shielding elements are positioned within the sample purification compartment so as to at least partially separate adjacent mixing zones and settling zones or separate adjacent mixing zones, the mixing zones being in fluid communication with the settling zones. A mixing element is disposed within each mixing zone. An acoustic wave settler is aligned with a portion of the container assembly, the acoustic wave settler being configured to emit an acoustic wave through the portion of the container assembly and a mixture disposed therein, the acoustic wave coalescing fluid phase droplets disposed in the mixture to increase the buoyancy or density of the fluid phase droplets.

A sample purification system includes a mixing zone; a settling zone in fluid communication with the mixing zone; a mixer element disposed in the mixing zone, the mixer element being configured to mix immiscible liquids to form a mixture; and a first acoustic wave settler configured to emit an acoustic wave into the mixture.

An efficient automatic liquid-liquid extracting machine includes a body. At least one set of stirring extractor is arranged on the body, the stirring extractor includes a cylindrical separating funnel and a stirring motor that are fixed on the body, a bottom funnel opening of the cylindrical separating funnel is connected to a three-way liquid separating device, the stirring motor is arranged opposite to the opening of the cylindrical separating funnel, a motor shaft of the stirring motor is connected to a stirring device, and a stirring end of the stirring device penetrates into the cylindrical separating funnel. Since multiple mechanical stirring devices are used in the analysis of semi-volatile organics, the extraction process for multiple samples can be performed synchronously at the same time, and the solvent and the solute are brought into full contact due to the rotary mechanical stirring up and down.

The present invention relates to a method of purifying waste hydrochloric acid, and more particularly, to a method of purifying waste hydrochloric acid which includes preparing an extraction solution by dissolving an extractant in an organic solvent (S1), extracting metallic components with the organic solvent by adding the extraction solution to the waste hydrochloric acid (S2), separating a waste hydrochloric acid layer and the organic solvent containing the metallic components (S3), and obtaining purified hydrochloric acid by recovering the separated (fractionated) waste hydrochloric acid layer (S4), wherein the extractant is used in an amount of 40 moles or more based on 1 mole of iron (Fe) included in the waste hydrochloric acid, and the waste hydrochloric acid and the extraction solution are mixed in a volume ratio of 1:0.1 to 1:1.

The disclosure includes systems and methods of producing cannabidiol (CBD) isolate. In some embodiments, a method includes dissolving CBD oil in a solvent to thereby form a slurry comprising a CBD isolate and excess solvent. Methods may thereby include separating, via a centrifuge, at least a portion of the CBD isolate from the excess solvent to thereby form a separated batch. Additionally, some embodiments include drying the CBD isolate from the separated batch.

An efficient automatic liquid-liquid extracting machine includes a body. At least one set of stirring extractor is arranged on the body, the stirring extractor includes a cylindrical separating funnel and a stirring motor that are fixed on the body, a bottom funnel opening of the cylindrical separating funnel is connected to a three-way liquid separating device, the stirring motor is arranged opposite to the opening of the cylindrical separating funnel, a motor shaft of the stirring motor is connected to a stirring device, and a stirring end of the stirring device penetrates into the cylindrical separating funnel. Since multiple mechanical stirring devices are used in the analysis of semi-volatile organics, the extraction process for multiple samples can be performed synchronously at the same time, and the solvent and the solute are brought into full contact due to the rotary mechanical stirring up and down.

A sample purification system includes a container assembly bounding a sample purification compartment and having an upper end and an opposing lower end, the sample purification compartment comprising mixing zones and settling zones. A plurality of shielding elements are positioned within the sample purification compartment so as to at least partially separate adjacent mixing zones and settling zones or separate adjacent mixing zones, the mixing zones being in fluid communication with the settling zones. A mixing element is disposed within each mixing zone. An acoustic wave settler is aligned with a portion of the container assembly, the acoustic wave settler being configured to emit an acoustic wave through the portion of the container assembly and a mixture disposed therein, the acoustic wave coalescing fluid phase droplets disposed in the mixture to increase the buoyancy or density of the fluid phase droplets.

An apparatus for the recovery of gold from a gold-bearing aqueous filtrate, the process comprising the steps of: (A) Contacting the aqueous filtrate with dibutyl carbitol (DBC) in a two-stage solvent extraction process to remove the gold from the aqueous filtrate into the DBC to form a gold-loaded DBC; and (D) Contacting the gold-loaded DBC with an aqueous acid scrub of hydrochloric acid in a four-stage countercurrent scrub process to remove impurities, e.g., non-gold metal, from the DBC into the aqueous scrub solution to form an impurity-loaded aqueous scrub. Each stage of the solvent extraction circuit and the aqueous acid scrub circuit is equipped with a mixing assembly and a phase separation tank in a head-tail arrangement such that the mixing assembly of one stage is adjacent to the phase separation tank of the adjacent stage.