The solubility of calcium sulphate in sodium chloride and sea salt solutions

Desalination ◽  
1968 ◽  
Vol 4 (2) ◽  
pp. 264-276 ◽  
Author(s):  
E. Furby ◽  
E. Glueckauf ◽  
L.A. McDonald
Author(s):  
Yeny A. Tobon ◽  
Danielle El Hajj ◽  
Samantha Seng ◽  
Ferdaous Bengrad ◽  
Myriam Moreau ◽  
...  

Sodium chloride (NaCl) is the main constituent of sea-salt aerosols. During atmospheric transport, sea-salt aerosols can interact with gases and other particles including secondary aerosols containing ammonium sulfate ((NH4)2SO4). This...


1954 ◽  
Vol 35 (5) ◽  
pp. 722 ◽  
Author(s):  
A. B. Arons ◽  
C. F. Kientzler

1926 ◽  
Vol 45 (1) ◽  
pp. 59-70 ◽  
Author(s):  
William Ogilvy Kermack ◽  
William Turner Horace Williamson

Summary1. The rates of sedimentation of a kaolin suspension in presence of varying concentrations of a salt (sodium chloride, potassium chloride, sodium sulphate, di-sodium hydrogen phosphate, sodium citrate, calcium chloride, calcium sulphate, monocalcium phosphate, “superphosphate”, aluminium chloride, ferric chloride or lanthanum chloride) have been compared at various pH values. Abnormal results are obtained with sodium chloride, monocalcium phosphate, aluminium, ferric and lanthanum chlorides.2. Sodium chloride increases the rate of sedimentation in alkaline solution, but actually inhibits it in acid solution.3. In concentrations of monocalcium phosphate above 0·06 per cent, abnormal sedimentation in alkaline solution takes place, with the result that it is much more complete than at the corresponding concentrations in acid solution.4. In acid solution the tervalent ions, aluminium, ferric and lanthanum have little effect, but a zone of very marked flocculation occurs at pH 7–8. This zone separates a region within which the unsedimented particles are negatively charged from a region within which they are positively charged.


1959 ◽  
Vol 39 (3) ◽  
pp. 384-394 ◽  
Author(s):  
D. H. Heinrichs

Two laboratory experiments were conducted to evaluate the reliability of amount of germination in solutions of varying osmotic pressure, as a means of separating alfalfa varieties into winter-hardiness classes. In one test 23 varieties or strains were studied, and in the other 36. It was found that significant differences exist between certain alfalfa varieties in their ability to germinate in sucrose or sodium chloride solutions of 3, 6, and 9 atmospheres. There is a general tendency for non-hardy varieties to germinate more rapidly and more completely than hardy ones but there are many exceptions to this trend. Germination in solutions of 6 atmospheres osmotic pressure at 5 days gave the best separation of varieties on the basis of their ability to germinate. Germination was generally better in solutions of sucrose at 6 atmospheres osmotic pressure than in solutions of sodium chloride of the same osmotic pressure but several varieties germinated equally well in either solution. The results indicate that germinating alfalfa in sugar or salt solutions is not a reliable method for differentiating alfalfa varieties into winter hardiness classes.


AIChE Journal ◽  
1974 ◽  
Vol 20 (2) ◽  
pp. 326-335 ◽  
Author(s):  
Leroy A. Bromley ◽  
Daljit Singh ◽  
Parthasarathi Ray ◽  
Srinivasan Sridhar ◽  
Stanley M. Read

1970 ◽  
Vol 15 (2) ◽  
pp. 246-253 ◽  
Author(s):  
Leroy A. Bromley ◽  
Anthony E. Diamond ◽  
Emilio Salami ◽  
David G. Wilkins

2009 ◽  
Vol 45 (3) ◽  
pp. 171-177 ◽  
Author(s):  
S. Kaufhold ◽  
R. Dohrmann

1955 ◽  
Vol 33 (1) ◽  
pp. 263-271 ◽  
Author(s):  
L. B. Smillie ◽  
A. M. Marko ◽  
G. C. Butler

Extraction of the histone of thymonucleoprotein with alcohol and salt has been studied with varying concentrations of alcohol, sodium chloride, and nucleoprotein and with varying pH and temperature. The addition of 0.5–1.0 volumes of ethanol to a solution of nucleoprotein (approximately 1 mgm. N/ml.) in 3 M sodium chloride has been found to effect an almost quantitative separation of desoxyribonucleic acid and protein. It has proved feasible to prepare concentrated aqueous solutions of the extracted protein by successive dialysis against strong salt solutions at −10 °C. and against distilled water at 5 °C. followed by pervaporation at 5 °C. The properties of the isolated nucleate have indicated a highly polymerized product.


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