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Standard Practice for Calculation of Supersaturation of Barium Sulfate, Strontium Sulfate, and Calcium Sulfate Dihydrate (Gypsum) in Brackish Water, Seawater, and Brines
STANDARD published on 1.6.2013
Designation standards: ASTM D4328-08(2013)
Note: WITHDRAWN
Publication date standards: 1.6.2013
SKU: NS-26857
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
barium sulfate, brines, calcium sulfate dihydrate, strontium sulfate, ICS Number Code 13.060.30 (Sewage water)
Significance and Use | ||||||||||||||||||||
4.1 This practice covers the mathematical calculation of the supersaturation of three principal sulfate scaling compounds found in industrial operations. Application of this standard practice to the prediction of scale formation in a given system, however, requires experience. The calculations tell the user if a water, or mixture of waters, is in a scaling mode. Whether or not scale will in fact form, how quickly it will form, where it will form, in what quantities, and what composition are subject to factors beyond the scope of this practice. However, based on how supersaturated a given water or mixture of waters is, an objective evaluation of the relative likelihood of scale formation can be made. 1.1 This practice covers the
calculation of supersaturation of barium sulfate, strontium
sulfate, and calcium sulfate dihydrate (gypsum) in brackish water,
seawater, and brines in which barium, strontium, and calcium ions
either coexist or exist individually in solution in the presence of
sulfate ions.
1.2 This practice is not applicable for calculating calcium sulfate dihydrate supersaturation if the temperatures of saline waters under investigation exceed 95°C. At temperatures above 95°C, hemianhydrate and anhydrite would be major insoluble forms. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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Historical
1.1.2014
Historical
15.4.2012
Historical
1.5.2010
Historical
1.6.2011
Historical
1.1.2013
Historical
1.3.2011
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