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  2. Soda lime - Wikipedia

    en.wikipedia.org/wiki/Soda_lime

    Soda lime canister used in anaesthetic machines to act as a carbon dioxide scrubber. Soda lime, a mixture of sodium hydroxide (NaOH) and calcium oxide (CaO), is used in granular form within recirculating breathing environments like general anesthesia and its breathing circuit, submarines, rebreathers, and hyperbaric chambers and underwater habitats.

  3. Flue-gas desulfurization - Wikipedia

    en.wikipedia.org/wiki/Flue-gas_desulfurization

    Depending on the application, the two most important are lime and sodium hydroxide (also known as caustic soda). Lime is typically used on large coal- or oil-fired boilers as found in power plants, as it is very much less expensive than caustic soda. The problem is that it results in a slurry being circulated through the scrubber instead of a ...

  4. Lime softening - Wikipedia

    en.wikipedia.org/wiki/Lime_softening

    Lime softening (also known as lime buttering, lime-soda treatment, or Clark's process) [1] is a type of water treatment used for water softening, which uses the addition of limewater (calcium hydroxide) to remove hardness (deposits of calcium and magnesium salts) by precipitation.

  5. Carbon dioxide scrubber - Wikipedia

    en.wikipedia.org/wiki/Carbon_dioxide_scrubber

    The primary application for CO 2 scrubbing is for removal of CO 2 from the exhaust of coal- and gas-fired power plants. Virtually the only technology being seriously evaluated involves the use of various amines, e.g. monoethanolamine. Cold solutions of these organic compounds bind CO 2, but the binding is reversed at higher temperatures: CO 2 ...

  6. Alkali soil - Wikipedia

    en.wikipedia.org/wiki/Alkali_soil

    Lime softening process precipitates Ca 2+ and Mg 2+ ions / removes hardness in the water and also converts sodium bicarbonates in river water into sodium carbonate. [2] Sodium carbonates (washing soda) further reacts with the remaining Ca 2+ and Mg 2+ in the water to remove / precipitate the total hardness. Also water-soluble sodium salts ...

  7. Alkali manufacture - Wikipedia

    en.wikipedia.org/wiki/Alkali_manufacture

    The ammonia-soda process was first patented on 30 June 1838 by Harrison Gray Dyar and John Hemming, [3] [4] who carried it out on an experimental scale in Whitechapel. Many attempts were soon after made in the same direction, both in England and on the continent of Europe, the most remarkable of which was the ingenious combination of apparatus ...

  8. Solvay process - Wikipedia

    en.wikipedia.org/wiki/Solvay_process

    The worldwide production of soda ash in 2005 was estimated at 42 million tonnes, [2] which is more than six kilograms (13 lb) per year for each person on Earth. Solvay-based chemical plants now produce roughly three-quarters of this supply, with the remaining being mined from natural deposits. This method superseded the Leblanc process.

  9. Liming (soil) - Wikipedia

    en.wikipedia.org/wiki/Liming_(soil)

    Prepared agricultural lime staged near a field in the UK. Liming is the application of calcium- (Ca) and magnesium (Mg)-rich materials in various forms, including marl, chalk, limestone, burnt lime or hydrated lime to soil. [1] In acid soils, these materials react as a base and neutralize soil acidity.

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