干旱区生态环境知识资源中心(Arid): Hydrogeochemical evaluation of the Terminal Complex aquifer system in an arid area: a case study from the Biskra region, north-east Algeria

Arid

DOI	10.1007/s12665-023-10786-6
	Hydrogeochemical evaluation of the Terminal Complex aquifer system in an arid area: a case study from the Biskra region, north-east Algeria
	Reghais, Azzeddine; Drouiche, Abdelmalek; Zahi, Faouzi; Debieche, Taha-Hocine
通讯作者	Drouiche, A
来源期刊	ENVIRONMENTAL EARTH SCIENCES
ISSN	1866-6280
EISSN	1866-6299
出版年	2023
卷号	82 期号:7
英文摘要	The present study aims to investigate the hydrogeochemical characteristics of the Terminal Complex (TC) groundwater in the Biskra region (north-east Algeria) to understand the hydrogeochemical processes that control their chemical composition using multivariate statistical techniques, bivariate and thermodynamic plots. A total of forty-five (45) water samples were collected from wells exploiting the TC aquifer and analyzed for electrical conductivity, pH, temperature, and major ions (April 2019). The results obtained indicate that the quality of the water does not meet WHO standards for drinking water, with contents of major elements exceeding the standard for most of the wells, except for the wells in the northern part, which are of good quality. Four types of hydrochemical facies were identified, revealing the diversity of processes that control water chemistry in the study area: (i) a sulfate sodium facies (47%), (ii) a sulfate calcium facies (37%), (iii) a bicarbonate magnesium facies (9%) and (iv) a sulfate magnesium facies (7%). Facies (i), (ii) and (iv), highlighted in the southern and south-western parts, are linked to the dissolution of salts and gypsum from evaporite formations. Facies (iii), identified in the northern part, reflects the dissolution of carbonate formations located in the aquifer recharge limits (recharge zone). The application of principal component analysis indicates that Na+, Cl-, Ca2+, Mg2+, SO42- and TDS represent the axis of mineralization. The dissolution of halite, gypsum, and anhydrite-bearing rocks is the primary mechanism for conducting groundwater salinization. These processes are confirmed by the PHREEQC model which reveal that calcite and dolomite precipitation favors the dissolution of evaporites where almost all water samples are undersaturated with respect to gypsum, anhydrite and halite (evaporite minerals). In addition, bivariate plots of the different ions show that cation exchange reactions leading to the adsorption of Ca2+ on clay minerals and simultaneous release of Na+ ions and silicate weathering are also processes that influence the groundwater chemistry of the Terminal Complex aquifer.
英文关键词	Hydrochemistry Groundwater Factorial analysis Dissolution Alteration Biskra
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000962479700003
WOS关键词	MAJOR ION CHEMISTRY ; MULTIVARIATE STATISTICAL-METHODS ; WATER-QUALITY ASSESSMENT ; GEOCHEMICAL EVOLUTION ; HYDROCHEMICAL CHARACTERISTICS ; WEATHERING PROCESSES ; GROUNDWATER ; RIVER ; ENVIRONMENT ; MECHANISMS
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396119
推荐引用方式 GB/T 7714	Reghais, Azzeddine,Drouiche, Abdelmalek,Zahi, Faouzi,et al. Hydrogeochemical evaluation of the Terminal Complex aquifer system in an arid area: a case study from the Biskra region, north-east Algeria[J],2023,82(7).
APA	Reghais, Azzeddine,Drouiche, Abdelmalek,Zahi, Faouzi,&Debieche, Taha-Hocine.(2023).Hydrogeochemical evaluation of the Terminal Complex aquifer system in an arid area: a case study from the Biskra region, north-east Algeria.ENVIRONMENTAL EARTH SCIENCES,82(7).
MLA	Reghais, Azzeddine,et al."Hydrogeochemical evaluation of the Terminal Complex aquifer system in an arid area: a case study from the Biskra region, north-east Algeria".ENVIRONMENTAL EARTH SCIENCES 82.7(2023).