Chemical composition of utility water in the arid climate zone on the examples of Kébili and Medenine regions (southern Tunisia)
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RIS BIB ENDNOTEChemical composition of utility water in the arid climate zone on the examples of Kébili and Medenine regions (southern Tunisia)
Data publikacji: 18.02.2019
Prace Geograficzne, 2018, Zeszyt 155, s. 139 - 156
https://doi.org/10.4467/20833113PG.18.017.9540Autorzy
Chemical composition of utility water in the arid climate zone on the examples of Kébili and Medenine regions (southern Tunisia)
Areas located within the hot, arid zone are characterized by extremely low availability of fresh water. In the Tunisian regions of Kébili and Medenine, deep-water sources and connate groundwater constitute its main sources. Surface waters, as well as shallow groundwaters found in those areas, are affected by a high level of salinity, which significantly reduces their use for either drinking or agriculture. Due to intensifying droughts the rainwater accumulation system, neither fulfils the needs of residents nor the developing agriculture. Waters in the oases of El Faour (Kébili) and Beni Kchedeche (Medenine) were analyzed in 2017 to find out their chemical composition, as well as their suitability for irrigation. The chemical composition of the investigated waters is dominated by the Na+, Ca2+, Cl– and SO4 3– ions. The value of electrolytic conductivity (EC) was found to be within the range of 1100 to 6400 μS/cm. The highest concentration of nitrate was 44 mg/L. Salinity indicators classified this water mainly as unsuitable for irrigation on the basis of sodium adsorption ratio (SAR) and EC, sodium total percentage (%Na) and Kelly’s ratio (KR). The iron concentration in all examined wells exceeded the recommended values set for potable water and ranged from 0.6 to 2.5 mg/L.
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Informacje: Prace Geograficzne, 2018, Zeszyt 155, s. 139 - 156
Typ artykułu: Oryginalny artykuł naukowy
Tytuły:
Chemical composition of utility water in the arid climate zone on the examples of Kébili and Medenine regions (southern Tunisia)
Chemical composition of utility water in the arid climate zone on the examples of Kébili and Medenine regions (southern Tunisia)
Institute of Geophysics, Polish Academy of Sciences, Warsaw
Centre of Migration Research, University of Warsaw, Pasteura 7, 02-093, Warsaw, Poland
Centre of Migration Research, University of Warsaw, Pasteura 7, 02-093, Warsaw, Poland
Department of Environment Protection and Modeling, Jan Kochanowski University, ul. Świętoktorzyska 15, 25-406 Kielce, Poland
Uniwersytet im. Adama Mickiewicza w Poznaniu, Wydział Nauk Geograficznych i Geologicznych, Instytut Geologii
Publikacja: 18.02.2019
Status artykułu: Otwarte
Licencja: CC BY-NC-ND
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