Solubility and stability of (NH4)2SO4 · H2O2 in aqueous solutions and change in some crystallographic parameters of (NH4)2SO4 precipitates

Titova, K. V.; Buyanov, V. V.; Nikol'skaya, V. P.; Pudova, O. B.; Zharkova, O. A.; Karzhavina, G. P.

doi:10.1134/s1070427208120057

Cited by 3 publications

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“…Conceptually, the double salt production method is mainly based on the interaction between ammonium sulfate (abbreviated as SA) and cation Mg 2+ , which is the major portion of SWB. In general, both magnesium salt (i.e., MgSO4) and SA can dissolve very well in water; for instance, the solubility of magnesium sulfate in an aqueous solution was found at a value of 35 g/100 g water (at 20 o C) [11] while SA was reported with a value of 74.4 g/100 g water (at 20 o C) [12]. On the contrary, the relatively low solubility of the salt-forming from those constituents can be calculated from a report by Daria et al [13] that allows crystallizing of a solid double salt by adding SA into SWB solution.…”

Section: Introductionmentioning

confidence: 99%

A Double Salt Formation from Seawater Bittern and Ammonium Sulfate

Le¹,

Pham²,

Hoang³

2022

J. Chem. Eng. Res. Updates.

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Seawater bittern, a huge reserve containing numerous mineral materials, is an essential source for producing various industrial salts. In this work, the formation of a double salt between magnesia abundant in the seawater bittern and ammonium sulfate was studied via SEM and EDX analyses. In the next step, to optimize the efficiency of the double salt separation, the effects of technological parameters such as concentration of reactants and their ratio, as well as reaction time and temperature, were investigated. Afterward, the design of the experimental method was utilized to quantify the influence of these parameters. Based on the validation of the obtained model according to statistical criteria, only the ratio of reactants and reaction time have been shown to have decisive roles in the yield of the double salt recovery. The optimal yield reached a value of about 95%, demonstrating the feasibility of the applied technique for further processes, i.e., industrial production.

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Section: Introductionmentioning

confidence: 99%