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Growth chemistry of organic phosphonate scale

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Document pages: 15 pages

Abstract: Industrial water systems often have undesirable inorganic deposits, such as calcium carbonate,e aspects include its CaCO3 crystal growth inhibition andmodification properties under severe conditions of high CaCO3 supersaturation, stability towards oxidizingmicrobiocides and tolerance towards precipitation with Ca2+. Results show that 15 ppm of PBTC can inhibitthe formation of by ∼35 , 30 ppm by ∼40 , and 60 ppm by ∼44 . PBTC is virtually stable to the effectsof a variety of oxidizing microbiocides, including chlorine, bromine and others. PBTC shows excellenttolerance towards precipitation as its Ca salt. Precipitation in a 1000 ppm Ca2+ (as CaCO3) occurs after 185ppm PBTC are present.

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