Hydrogeochemical processes and dissolved gases chemistry at the Gariz aquifer, Southwest of Yazd Province

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Parsasadr Hossein; Nassery Hamid Reza; Alijani Farshad

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Journal Paper

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Journal: HYDROGEOLOGY Year:2023 | Volume:7 | Issue:2 Page(s): 1-14

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Information Journal Paper

Title

Hydrogeochemical processes and dissolved gases chemistry at the Gariz aquifer, Southwest of Yazd Province

Author(s)

Parsasadr Hossein | Nassery Hamid Reza | Alijani Farshad | Issue Writer Certificate

Keywords

Carbon dioxide

Dissolved gases

Gariz aquifer

Hydrogeochemistry

Abstract

The leakage of natural gases mainly Carbon dioxide into the Gariz aquifer has increased the concentration of Dissolved gases and decreased groundwater quality. Therefore, the water supply of the residents of this region in various needs such as agriculture, drink, domestic, and industry, has faced some problems. Groundwater wells have been sampled to evaluate the hydrogeochemical processes of gaseous aquifers and determine the nature of Dissolved gases during two-stage in July and September of 2019. Laboratory analysis includes the concentration of major anions and cations and, the Dissolved gases in groundwater samples, and some physicochemical properties of water that have been measured directly in the field. On the basis of the chemistry of major ions, most of the samples have been classified as calcium-bicarbonate (Ca-HCO3), sodium-chloride (Na-Cl), and calcium-chloride (Ca-Cl) types, although other mixing types are also recognized. The most significant processes that affect the chemical composition of the groundwater of the Gariz aquifer are water-rock interaction, leakage of CO2-rich fluids, infiltration of saline water through faults and fractures, and silicate dissolution. Bicarbonate ion has increased in the groundwater samples due to the interaction of CO2-rich fluids with the groundwater aquifer. The composition of Dissolved gases also indicates that CO2 is the dominant gas phase in most samples, up to 2100 times higher than atmospheric values. High concentrations of dissolved CO2 of more than 730 cubic centimetres per litre indicate the infiltration of CO2-rich fluids with deep origin into the aquifer. The ratio of dissolved O2/N2 in the aquifer is lower than in air-saturated water (ASW), therefore geochemical processes are responsible for dissolved oxygen consumption during redox reactions.

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APA: Copy

Parsasadr, Hossein, Nassery, Hamid Reza, & Alijani, Farshad. (2023). Hydrogeochemical processes and dissolved gases chemistry at the Gariz aquifer, Southwest of Yazd Province. HYDROGEOLOGY, 7(2 ), 1-14. SID. https://sid.ir/paper/1053708/en

Vancouver: Copy

Parsasadr Hossein, Nassery Hamid Reza, Alijani Farshad. Hydrogeochemical processes and dissolved gases chemistry at the Gariz aquifer, Southwest of Yazd Province. HYDROGEOLOGY[Internet]. 2023;7(2 ):1-14. Available from: https://sid.ir/paper/1053708/en

IEEE: Copy

Hossein Parsasadr, Hamid Reza Nassery, and Farshad Alijani, “Hydrogeochemical processes and dissolved gases chemistry at the Gariz aquifer, Southwest of Yazd Province,” HYDROGEOLOGY, vol. 7, no. 2 , pp. 1–14, 2023, [Online]. Available: https://sid.ir/paper/1053708/en

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