Chott Baghdad is an inland saline lake of the type Na-(Mg)-CI-(SO4). It is situated in septontrional Algerian sahara basin (northern of Africa).these small depression is fall dawn about 31m below sea level. One of characteristic of this zone is dry climate in summer when temperature reach 45°C and decrease in winter 5 °C. Chott Baghdad irrigate with surface water zone, continental saharan aquifer and precipitated water. Evaporative lakes without river outlets are common and their chemical composition has been reported to exhibit a wide diversity (Hardie and Eugster, 1970; Eugster and Hardie, 1978). Geologics and gitologic characteristics of deposed evaporates in Baghdad basin, small closed lagon take place with brines rich in ions , Ca2+, Na+, Cl- and under the effect of evaporation generate the rock salt and gypsum precipitation. The objective of this study is to simulate evolution the geochemical cycle inside of chott Baghdad, in addition try to interpreter behavior of major element which constructs this small depression. The most important thing is to calculate saturated index of evaporated mineral and compare it with DRX result. To reach this study, monthly brine samples were collected from January to December. Different analytic methods were used: physico-chemical analytic (PH, temperature and conductivity). In addition, spectrophotometer and titration, phlameemissions were done to calculate major element concentration. From this study, we can conclude that major element behavior (Na+, Cl−, , Mg+, K+, HCO3−, and Ca2+) is as follow: Chlore and sodium was decreasing at end of geochemical cycle. In addition, Bicarbonate, potassium and magnesium have characteristic evolution, where they increase at the beginning of geochemical cycle till summer then decrease steadily at the end of cycle. Where us, Calcium is quit steady during one year cycle.
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24 May 2018
TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY: TMREES18
1–3 February 2018
Beirut, Lebanon
Research Article|
May 24 2018
Geology and geochemistry of endoroique basin case of Baghdad chott southern of Algeria
Abdellah Lamini;
Abdellah Lamini
a)
1
Laboratory Geology of Sahara, Kasdi Merbah University of Ouargla
, BP 511, Ouargla 30000, Algeria
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Messaoud Hacini
Messaoud Hacini
b)
1
Laboratory Geology of Sahara, Kasdi Merbah University of Ouargla
, BP 511, Ouargla 30000, Algeria
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AIP Conf. Proc. 1968, 020006 (2018)
Citation
Abdellah Lamini, Messaoud Hacini; Geology and geochemistry of endoroique basin case of Baghdad chott southern of Algeria. AIP Conf. Proc. 24 May 2018; 1968 (1): 020006. https://doi.org/10.1063/1.5039165
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