Geochemical and hydrogeological studies of a sodium sulphate deposits: the case of Sabkhet El Ghine Oum El Khialate, southeast Tunisia

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

“…The brine underwent evaporation of 30, 60, and 100%. After each (Tagorti et al, 2014), and map of the dry residue within the sebkha (Nasri et al, 2015a) evaporation phase, the recuperated salt underwent XRD, XRF, and FTIR analyses. The mineralogical composition of the precipitated salt was also determined by XRD.…”

“…The economic interest of sebkha Oum El Khialate is twofold (2). The different mineral species already cited in previous works (Perthuisot, 1976;Tagorti et al, 2014Tagorti et al, , 2016Nasri et al, 2015aNasri et al, , 2015b are of great economic interest in the international salt markets due to an increasing ratio demand/supply and prices.…”

“…Located in the southeast of Tunisia, sebkha Oum El Khialate, (Figure 1), constitutes a potential field that can provide high concentrations of salt. Previous geological studies focused on the mining basin of sebkha Oum El Khialate (Solignac, 1942;Perthuisot, 1976;Mammou, 1983;Loukil, 1988;Mahjoubi and Rouine, 1990;Tagorti, 1999;Tagorti et al, 2014Tagorti et al, , 2016. The region is characterized by an arid climate, which offers desertic conditions.…”

“…Tunisian sebkhas contain a high volume of natural brine, which represents enormous resources for extraction of dissolved salt (e.g., Tagorti et al, 2014;Ben Smida, 2016;Essefi et al, 2020;Essefi and Tagorti, 2021). Actually, during natural isothermal solar evaporation mineral salts may be recovered.…”

Evaluation and analysis of underground brine resources in the southern coastal area of Laizhou Bay

“…Assuming that the group well pumps do not impact a single well, the exploitable amount of underground brine in the study area can be estimated using the method of uniform distribution of wells [10] and the exploitable amount of underground brine in the entire area can be calculated based on the theory of unsteady flow, according to the following equation (1), (2), (3), (4), (5), we could calculated the exploitable amount of underground brine resource [11,12]. The calculated parameters are substitued into the equation to obtain different beneficial components in brine; the results ranking from highest to lowest are as follows: NaCl, MgCl2, MgSO4, CaSO4, KCl, and Br, and their respective exploitable amounts are 1653.6×10 4 t/a, 285.7×10 4 t/a, 126.6×10 4 t/a, 80×10 4 t/a, 16.6×10 4 t/a and 4.254×10 4 t/a.…”