Sequence crystallization during isotherm evaporation of southern Algeria chott Baghdad natural brine

Zatout, Merzouk; Hacini, Messaoud; Hamzaoui, Ahmed Hichem; M’nif, Adel

doi:10.4314/jfas.v9i2.22

Cited by 7 publications

(2 citation statements)

References 3 publications

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“…Actually, during the natural isothermal solar evaporation of the brine related to the arid climate, mineral salts may be recovered. Starting from the original brine, the precipitation sequences of the different salts is a function of the composition and the density of the initial brine (Zatout et al 2017). Tunisia is marked by the presence of endorheic as well exoreic saline depressions including Chott Djerid (Haddadi 2018) and sebkhas of Sidi El Hani (Essefi et al 2013;, Oum El Khialate (Tagorti et al 2014(Tagorti et al , 2016Essefi 2021); Mchiguig (Essefi et al 2020) and Boujmel (Ben Smida 2016).…”

Section: Introductionmentioning

confidence: 99%

Geoeconomic interest of minerals assemblage of sebkha El Melah, southeastern Tunisia

Essefi

Tagorti²

2021

Water Practice and Technology

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This work aimed to study the formation of salt through a progressive evaporation of sebkha El Melah brine. The precipitated salt in the case of sebkha El Melah is variable along the progressive evaporation. Weights of salt after each phase of precipitation indicate a heterogeneous evaporation process cumulating at 315 g L−1. With an increasing evaporation of El Melah brine, the number of precipitated mineral species increased. The cumulative number of species along the evaporation process reached 20, including principally: Halite (NaCl) (73–95%), epsomite (MgSO4·7H2O) (7–14%), bischofite (MgCl2:6H2O) (1%), Kieserite Mg(SO4)(H2O) (0–2%), magnesite (MgCO3) (1–4%), polyhalite (K2Ca2Mg(SO4)4,2H2O). Also, the thermodynamic theoretical modeling of the El Melah brine shows convergence with geochemical and mineralogical experimental data. At an evaporation rate of 60%, the sebkha of El Melah annually provides with 315,000 tons of salt. The majority of salt (80%) is halite. The remaining 20% contains different species having a huge economic interest. From an industrial viewpoint, our study shows that the purity of halite is guaranteed at low rates of evaporation. Evaporation between 50 and 75% produces a mixture dominated by halite. Evaporation higher than 75% needs further studies to find the mineralogical composition and the phase of each mineral precipitation. The saline system of El Melah represents a geoeconomic interest due to the cheap natural process of production, its large quantity of halite with varieties of other accessory minerals, and cheap procedure of exportation.

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Section: Introductionmentioning

confidence: 99%

Geoeconomic interest of minerals assemblage of sebkha El Melah, southeastern Tunisia

Essefi

Tagorti²

2021

Water Practice and Technology

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“…Actually, during natural isothermal solar evaporation mineral salts may be recovered. Starting from an original brine, the precipitation sequences of the different salts is a function of the composition and the density of the brine (Ben Smida, 2016;Zatout et al, 2017). The Tunisian sebkhas and chotts are different from the usual salt lakes or closed seas.…”

Section: Introductionmentioning

confidence: 99%

Geochemistry and mineralogy of the sebkha Oum El Khialate evaporites mixtures, southeastern Tunisia

Essefi

2021

Resource Geology

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This work is meant to study the variation of geochemistry and mineralogy of three salts recuperated from brines of the sebkha Oum El Khialate based on XRF, X-ray diffraction (XRD), and Fourier transform infrared (FTIR) analyses.Elemental analyses indicate enrichment with major element having an economic interest such as potassium. Compared to standards, minor elements analyses yield high concentrations of hazardous elements such as Cd and Cr, and represent a threat for human consumption. XRD and FTIR analyses display a variable mineralogy along the evaporation path including minerals that are specific for this sebkha, such as vaterite (CaCO 3 ), potassium pentasulphate (K 2 S 5 O 16 ), thenardite (Na 2 SO 4 ), beryllium sulfate (BeSO 4 ), brucite (Mg(OH) 2 ), and mirabilite (Na 2 SO 4 Á10 H 2 O). The geochemistry and mineralogy of recuperated salts prove the relevance of the sebkha Oum Khialete as a potential ore resource to be used in industry and agriculture.

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Geochemical characterization of the Southern Algerian brines using PHREEQC software and the Jänecke solubility phase diagram

Zatout

Hacini²,

Lamini³

et al. 2022

Arab J Geosci

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Sequence crystallization during isotherm evaporation of southern Algeria chott Baghdad natural brine

Cited by 7 publications

References 3 publications

Geoeconomic interest of minerals assemblage of sebkha El Melah, southeastern Tunisia

Geoeconomic interest of minerals assemblage of sebkha El Melah, southeastern Tunisia

Geochemistry and mineralogy of the sebkha Oum El Khialate evaporites mixtures, southeastern Tunisia

Geochemical characterization of the Southern Algerian brines using PHREEQC software and the Jänecke solubility phase diagram

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