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US 11,440,801 B2Granted
Treatment of spent cannabis biomass with activating agent
AssigneeNextleaf Solutions Ltd.
InventorsXuan Jia, David Michael Novitski
Life of this patent
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Abstract
A process to transform spent cannabis biomass into activated carbon via a treatment involving a chemical activation process. The spent cannabis biomass is mixed with an activating agent and then subjected to a heat treatment. The spent cannabis biomass is heated in stages, the first to remove water and volatile components, and the second to reclaim leftover cannabinoids. During a third, higher temperature stage, the biomass is converted to activated carbon.
Claims18
A process for treating spent cannabis biomass comprising:
- mixing spent cannabis biomass with an activating agent to result in an impregnated spent cannabis biomass;
- raising the impregnated spent cannabis biomass to a first temperature that is sufficient to remove water and volatile components from the impregnated spent cannabis biomass;
- raising the impregnated spent cannabis biomass to a second temperature that is sufficient to recover cannabinoids from the impregnated spent cannabis biomass, wherein the second temperature is higher than the first temperature;
- collecting the recovered cannabinoids by directing them into chilled ethanol:
- raising to a third temperature the impregnated spent cannabis biomass, wherein the third temperature is higher than the second temperature;
- and
- maintaining the impregnated spent cannabis biomass at the third temperature until the impregnated spent cannabis biomass has been transformed into activated carbon.
4 more elements
Dependencies are inferred from the claim text.