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2. Carbon dioxide scrubber - Wikipedia

   en.wikipedia.org/wiki/Carbon_dioxide_scrubber

   A carbon dioxide scrubber. A carbon dioxide scrubber is a piece of equipment that absorbs carbon dioxide (CO 2).It is used to treat exhaust gases from industrial plants or from exhaled air in life support systems such as rebreathers or in spacecraft, submersible craft or airtight chambers.

3. Direct air capture - Wikipedia

   en.wikipedia.org/wiki/Direct_air_capture

   Direct air capture (DAC) is the use of chemical or physical processes to extract carbon dioxide (CO 2) directly from the ambient air. [1] If the extracted CO 2 is then sequestered in safe long-term storage, the overall process is called direct air carbon capture and sequestration ( DACCS ), achieving carbon dioxide removal and be a "negative ...

4. Amine gas treating - Wikipedia

   en.wikipedia.org/wiki/Amine_gas_treating

   Amine gas plant at a natural gas field. Amine gas treating, also known as amine scrubbing, gas sweetening and acid gas removal, refers to a group of processes that use aqueous solutions of various alkylamines (commonly referred to simply as amines) to remove hydrogen sulfide (H 2 S) and carbon dioxide (CO 2) from gases.

5. Carbon capture and storage - Wikipedia

   en.wikipedia.org/wiki/Carbon_capture_and_storage

   Direct air carbon capture and sequestration (DACCS) is the use of chemical or physical processes to extract CO2 directly from the ambient air and putting the captured CO2 into long-term storage. [123] In contrast to CCS, which captures emissions from a point source, DAC has the potential to remove carbon dioxide that is already in the atmosphere.

6. Supercritical fluid extraction - Wikipedia

   en.wikipedia.org/wiki/Supercritical_fluid_extraction

   Extraction Profile for Different Types of Extraction. The extraction curve of % recovery against time can be used to elucidate the type of extraction occurring. Figure 4(a) shows a typical diffusion controlled curve. The extraction is initially rapid, until the concentration at the surface drops to zero, and the rate then becomes much slower.

7. Molecular sieve - Wikipedia

   en.wikipedia.org/wiki/Molecular_sieve

   They are also used in the filtration of air supplies for breathing apparatus, for example those used by scuba divers and firefighters. In such applications, air is supplied by an air compressor and is passed through a cartridge filter which, depending on the application, is filled with molecular sieve and/or activated carbon , finally being ...

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9. Supercritical carbon dioxide - Wikipedia

   en.wikipedia.org/wiki/Supercritical_carbon_dioxide

   Supercritical carbon dioxide can be used as a solvent in dry cleaning. [4] Supercritical carbon dioxide is used as the extraction solvent for creation of essential oils and other herbal distillates. [5] Its main advantages over solvents such as hexane and acetone in this process are that it is non-flammable and does not leave toxic residue.