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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.
Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions.
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He became known for the discovery of the phosphate of soda, and the process of lime softening of hard water the 'Clark process'. A Clark degree (°Clark) of water hardness is defined as one grain (64.8 mg) of CaCO 3 per Imperial gallon (4.55 litres) of water, equivalent to 14.254 ppm. and 10^5 parts of water
Most of the last section on Waste Products, starting at the second paragraph (In a typical limestone treatment system influent flows enter the bottom...) seems utterly irrelevant since it discusses the treatment of acidic waste, while the waste from lime softening is alkaline. 209.195.115.88 15:03, 14 November 2010 (UTC)
Carbonatation is a slow process that occurs in concrete where lime (CaO, or Ca(OH) 2 ) in the cement reacts with carbon dioxide (CO 2) from the air and forms calcium carbonate. The water in the pores of Portland cement concrete is normally alkaline with a pH in the range of 12.5 to 13.5.
Soap scum or lime soap is the white solid composed of calcium stearate, magnesium stearate, and similar alkaline earth metal derivatives of fatty acids. These materials result from the addition of soap and other anionic surfactants to hard water .
A martial arts action film. Kelepçe , 1982. Based on Dirty Harry and featuring Cüneyt Arkın. Korkusuz ("Rampage"), colloquially "Turkish Rambo", 1986. Based on Rambo: First Blood Part II and one of the few Turksploitation productions available on DVD. Ölüm Savaşçısı ("Death Warrior"), a 1984 film belonging to the ninja exploitation genre.