The present invention provides for a method for obtaining an oil extract of cannabis. The method includes: (a) contacting cannabis biomass and an edible oil; (b) pressing between a pair of plates to provide spent cannabis and an oil extract of cannabis; and (c) separating the spent cannabis biomass and the oil extract of cannabis.

A method of isomerizing Δ9-tetrahydrocannabinol (“Δ9-THC”) to Δ10-tetrahydrocannabinol (“Δ10-THC”). The method includes the steps of: extracting Δ9-THC from cannabis biomass, which optionally contains one or more of the components found in fire retardant such as PHOS-CHEK®; dewaxing of crude extracts by winterization; pH-adjusting extracts by washing the extracts in heptane solution with aqueous solutions of: citric acid, sodium bicarbonate, and brine; isomerizing Δ9-THC to Δ10-THC by exposure to suitable conditions and in the presence of a catalyst based on the components of fire retardant; vacuum distillation of Δ10-THC at a predetermined temperature range and vacuum level; collecting the distillate and redistilling it up to three times to acquire distillate containing less than 60% Δ10-THC; and purification of the MO-THC to a purity of 99% or greater by crystallization from n-pentane solution.

A method and apparatus for extracting active components from a plant material by: introducing the material containing the active components in an extraction chamber: introducing a hydrofluorocarbonated compound in a tank at a pressure between 482.6 kPa and 1,447.9 kPa (70 psi to 210 psi): introducing ethanol in a receptacle; mixing the hydrofluorocarbonated compound with ethanol; allowing the mixture to reach the plant material; allowing the mixture enriched with ethanol and the hydrofluorocarbonated compound to flow out of the extraction chamber and into a tank; allowing the ethanol to evaporate and become separated from the residual mixture slower than the hydrofluorocarbonated compound; optionally, the hydrofluorocarbonated compound is recovered by condensing and returning it to the pressurised tank; optionally, the ethanol is recovered by condensing and returning it to the mixing receptacle.

A method and apparatus for extracting active components from a plant material by: introducing the material containing the active components in an extraction chamber: introducing a hydrofluorocarbonated compound in a tank at a pressure between 482.6 kPa and 1,447.9 kPa (70 psi to 210 psi): introducing ethanol in a receptacle; mixing the hydrofluorocarbonated compound with ethanol; allowing the mixture to reach the plant material; allowing the mixture enriched with ethanol and the hydrofluorocarbonated compound to flow out of the extraction chamber and into a tank; allowing the ethanol to evaporate and become separated from the residual mixture slower than the hydrofluorocarbonated compound; optionally, the hydrofluorocarbonated compound is recovered by condensing and returning it to the pressurised tank; optionally, the ethanol is recovered by condensing and returning it to the mixing receptacle.

A process for the recovery of lithium from waste lithium ion batteries or parts thereof is disclosed. The process comprising the steps of A) providing a crude lithium hydroxide as a solid, which contains fluoride; and (B) dissolving the crude lithium hydroxide solid with a lower alcohol such as methanol or ethanol provides good separation of lithium in high purity.

Methods for increasing cannabinoid production in growing cannabis plants, and for lowering the hydrophobicity of soil are described. Foliar application of compositions comprising cannabinoids extracted from Cannabis sativa hemp to the growing plants and/or drenching the soil surrounding the growing cannabis plants therewith have been demonstrated to produce significant changes in cannabinoid production, thereby generating an increase in the marketable portion of the crop. Additionally, application of these compositions to the soil reduces soil hydrophobicity.

A method and system of using a supercritical fluid are disclosed. Exemplary methods include using temperature and pressure variation (e.g., above or below supercritical conditions) to remove material from a substrate to form separated and to cause movement of fluid within the system.

Systems and methods for extracting solute from a source material in multiple canister systems are shown and described.

A process (100) for the recovery of solvent (1) from solvent-containing cellulosic particles (2) is shown, the process comprising the steps: a) extracting the solvent (1) from the cellulosic particles (2) by means of a liquid extraction medium (3), thereby obtaining a solvent-enriched extraction medium (5), and b) obtaining the recovered solvent (6) from the solvent-enriched extraction medium (5). In order to improve the efficiency of the process, it is proposed that in step a) the solvent (1) is extracted from the cellulosic particles (2) in a continuous flow extraction reactor (4), wherein the extraction medium (3) continuously flows through the extraction reactor (4) to extract the solvent (1) from the cellulosic particles (2).

Soil contamination by heavy metals constitutes an important environmental problem, whereas field applicability of existing remediation technologies has encountered numerous obstacles, such as long operation time, high chemical cost, large energy consumption, secondary pollution, and soil degradation. A design and demonstration of a method is provided which is based on asymmetrical alternating current electrochemistry (AACE) that achieves high degrees of contaminant removal for different heavy metals (Cu, Pb, Cd) at different initial concentrations (from 100 to 10,000 ppm), all reaching corresponding regulation levels for residential scenario after rational treatment time (from 30 min to 6 h). No excessive nutrient loss in treated soil was observed and no secondary toxic product was produced. Long-term experiment and plant assay showed the high sustainability of the method and its feasibility for agricultural use.