Provided are a method for treating sulfur hexafluoride and an apparatus for collecting and treating by-products. The method for treating sulfur hexafluoride, and the apparatus for collecting and treating by-products according to the present invention are a significantly effective method and apparatus capable of safely treating sulfur hexafluoride at low cost.

The present invention provides a portable extraction device for extracting at least one constituent from a substance by an extraction fluid. The extraction device comprises at least one pump, an extractor, an evaporator, and a condenser. The substance and the extraction fluid are placed and mixed in the extractor. The extraction fluid is a subcritical fluid. The constituent in the substance will be dissolved in the extraction fluid under a predetermined pressure and temperature. The evaporator receives the extraction fluid including the constituent from the extractor, and heats the extraction fluid including the constituent to gasify the extraction fluid and separate the constituent from the gasified extraction fluid. The condenser receives the gasified extraction fluid via a first pipe, liquefies the gasified extraction fluid, and transmits the liquefied extraction fluid to the extractor via a second pipe. The extractor, the evaporator, and the condenser are operated under constant pressure.

The present invention provides a containment vessel for cannabis and other plant materials where the microwave radiation pattern of an applicator is contained within the vessel allowing the efficient heating and removal of organic compounds. The radiation pattern is designed to induce a migrating phase boundary that heats the plant material while the containment vessel allows the collection of liquid and vapor phase organic compounds.

Method and apparatus for condensing a majority of the solvent in a process gas stream at low temperatures, e.g., below the freezing point of water, ca. −5° C. The gas stream exiting the condenser step may be further processed in one or more emission control devices, such as a single or multi-step series of concentrator devices, such as zeolite concentrator devices. One or more emission control operations can be carried out downstream of the single or multi-step concentrators. The aforementioned condensing process enables the one or more concentrators to operate in a favorable temperature range for removal of 99% or more of VOC, thereby meeting or exceeding strict environmental regulations.

The invention is an apparatus, system and method for the generation of usable water from atmospheric water vapor and the generation of electric power and compressed air from and for such system.

The present invention relates to a process to obtain tobacco flavor extracts, the process comprising: —conditioning a mixture of tobaccos in a primary tobacco manufacture heating the mixture of tobacco to a temperature comprised between about 30 degrees Celsius and about 90 degrees Celsius for a time interval comprised between about 30 seconds and about 1 hour; —recovering emissions produced by the mixture conditioning; and —obtaining at least one flavor extract from the recovered emissions. The present invention also relates to an apparatus to obtain tobacco flavor extracts.

An atmospheric water harvesting material includes a deliquescent salt, a photothermal agent, and a polymeric hydrogel matrix containing the deliquescent salt and photothermal agent.

A process for the separation of .sup.99mTc from molybdenum targets is described. The method for separation of .sup.99mTc isotope from molybdenum targets includes: i) providing an initial multicomponent mixture of elements, the mixture containing .sup.99mTc; ii) dissolving the multicomponent mixture of elements with an oxidizing agent to oxidize the mixture of elements; iii) heating the mixture of elements at a temperature sufficiently high enough to sublimate a vaporized compound containing .sup.99mTc; iv) condensing the vaporized compound containing .sup.99mTc to form a reaction product; v) adding a base to the condensed reaction product to dissolve the .sup.99mTc containing reaction product to form sodium pertechnetate (Na.sup.99mTcO.sub.4); and vii) purifying the crude solution of sodium pertechnetate Na.sup.99mTcO.sub.4 using column chromatography to provide the .sup.99mTc isotope as a radiochemical compound.

In a helium purification process, a stream containing at least 10% of helium, at least 10% of nitrogen in addition to hydrogen and methane is separated to form a helium-enriched stream containing hydrogen, a first stream enriched in nitrogen and in methane and a second stream enriched in nitrogen and in methane, the helium-enriched stream is treated to produce a helium-rich product and a residual gas containing water, the residual gas is treated by adsorption (TSA) to remove the water and the regeneration gas from the adsorption is sent to a combustion unit (O).

Processes and plants for the production of purified urea solution are described. In a described urea production process, urea is produced in a synthesis section without a high pressure stripper and the urea solution is subjected to purification after the recovery section, to give purified urea solution and off-gas. The purification comprises e.g. steam stripping.