Dissolution kinetics of MgO crystals in aqueous acidic salt solutions

1982 ◽  
Vol 17 (12) ◽  
pp. 3598-3610 ◽  
Author(s):  
K. Sangwal
Keyword(s):  
Dissolution Kinetics ◽  
Salt Solutions ◽  
Acidic Salt ◽  
Kinetics Of

Comparison of different models for describing gypsum dissolution kinetics in different aqueous salt solutions

Soil Research ◽  
1990 ◽  
Vol 28 (6) ◽  
pp. 947 ◽  
Author(s):  
H Singh ◽  
MS Bajwa
Keyword(s):  
Dissolution Kinetics ◽  
Sodium Adsorption Ratio ◽  
Standard Errors ◽  
Salt Solutions ◽  
Order Model ◽  
Gypsum Dissolution ◽  
First Order ◽  
Aqueous Salt Solutions ◽  
Elovich Equation ◽  
Kinetics Of

Gypsum dissolution as a function of time was measured in solutions having a sodium adsorption ratio (SAR) of 7.5, 14 and 27 (mmol(+) kg-1)1/2 and an electrical conductivity (EC) of 1 5 and 3.1 dS m-1. The amount of gypsum dissolved increased with increases in the SAR and EC values of the different equilibrating solutions. The rate of gypsum dissolution was higher initially but declined with increasing time of equilibration. Of the total amount of gypsum dissolved in 40 h, about 60-70% dissolution occurred during the first 5 min. Comparisons of coefficients of determination (r2) and standard errors of estimate indicated that, in addition to the most widely used linear form of the first-order model, other models such as the power function, empirical (modified from first-order) and the Elovich equation, can also be used to describe the kinetics of gypsum dissolution in aqueous solutions varying in SAR and EC.

scholarly journals Pure dissolution kinetics of anhydrite and gypsum in inhibiting aqueous salt solutions

AIChE Journal ◽  
2012 ◽  
Vol 59 (5) ◽  
pp. 1622-1626 ◽  
Author(s):  
Edgar Alejandro Pachon-Rodriguez ◽  
Jean Colombani
Keyword(s):  
Dissolution Kinetics ◽  
Salt Solutions ◽  
Aqueous Salt Solutions ◽  
Kinetics Of

Short time dissolution kinetics of refractory elements Fe, Al, and Ti in Asian outflow-impacted marine aerosols and implications

2013 ◽  
Vol 79 ◽  
pp. 93-100 ◽  
Author(s):  
Shih-Chieh Hsu ◽  
Fei-Jan Lin ◽  
Tsun-Hsien Liu ◽  
Shuen-Hsin Lin ◽  
Shuh-Ji Kao ◽  
...  
Keyword(s):  
Dissolution Kinetics ◽  
Marine Aerosols ◽  
Refractory Elements ◽  
Short Time ◽  
Kinetics Of

ON THE MECHANISM OF THE DISSOLUTION OF MAGNESIUM IN ACIDIC SALT SOLUTIONS: I. PHYSICAL CONTROL BY SURFACE FILMS

1953 ◽  
Vol 31 (9) ◽  
pp. 849-867 ◽  
Author(s):  
E. J. Casey ◽  
R. E. Bergeron
Keyword(s):  
Ionic Strength ◽  
Chemical Control ◽  
Corrosion Potential ◽  
Surface Film ◽  
Surface Films ◽  
Salt Solutions ◽  
Acidic Solutions ◽  
Activity Temperature ◽  
Acidic Salt ◽  
High Concentrations

A kinetic study and analysis has been made of the effects of ionic strength, acid activity, temperature, and salt type on the dissolution of magnesium in acidic salt solutions. This is an example of the simplest type of corrosion involving hydrogen evolution. The results are interpreted in terms of the effects of the various factors on the structure of a surface film which must be magnesium oxide and/or hydroxide even in acidic solutions. The importance of internal dissolutions in the film at high concentrations of attacking reagent, for this and other cases, is shown. Owing to complex formation, under certain conditions an odd case of "chemical control" of the dissolution rate in this simplest case becomes evident. Corrosion potential measurements aid in the interpretation.

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