干旱区生态环境知识资源中心(Arid): Evaluation of groundwater hydrogeochemical characteristics and delineation of geothermal potentialities using multi criteria decision analysis: Case of Tozeur region, Tunisia

Arid

DOI	10.1016/j.apgeochem.2019.104504
	Evaluation of groundwater hydrogeochemical characteristics and delineation of geothermal potentialities using multi criteria decision analysis: Case of Tozeur region, Tunisia
	Ben Brahim, Fatma; Boughariou, Emna; Makni, Jalila; Bouri, Salem
通讯作者	Ben Brahim, Fatma
来源期刊	APPLIED GEOCHEMISTRY
ISSN	0883-2927
出版年	2020
卷号	113
英文摘要	The use of geothermal energy in Tunisia is limited to its instant use because of the low enthalpy resources, especially in the southern part of the country. The Djerid Basin has remarkable geothermal resources with low to moderate temperatures that have been used only for irrigation of oases and heating greenhouses. In order to evaluate the geothermal potential of groundwater resources of Tozeur region located in the Djerid Basin, a synthetic approach including geological, geophysical, physicochemical, hydrogeological and geothermometric characteristics of groundwater is indispensable. It aims to determine: (1) the evolution of the water chemistry, (2) the origin of thermal waters and their reservoir temperature, (3) the mixing mechanism of geothermal fluid and (4) the mapping of geothermal potentialities with Multi-Criteria-Decision-Analysis (MCDA) using GIS platform. The hydrogeochemical approach revealed that the studied geothermal system is characterized by temperature values ranging between 25 and 75 degrees C and total dissolved solids (TDS) values between 0.7 and 5.8 g/l. Furthermore, the use of silica geothermometers and saturation indices for different solid phases gave estimated geothermal reservoir temperature ranging between 92 and 104 degrees C and between 100 and 125 degrees C, respectively. In addition, the equilibrium processes elucidated that the thermal waters are mostly in the oversaturated condition with respect to calcite, aragonite and dolomite, but they are saturated with evaporate minerals. According to the obtained results of the MCDA, the spatial assessment of the potential geothermal areas using Weighted overlay and Boolean logic Models are 37 % and 5 % respectively. The findings in this study contribute to a better understanding of groundwater sustainability for supporting geothermal project on renewable energy and can be used as a synthetic document for realistic management of groundwater resources.
英文关键词	Geothermal system Hydrochemistry Geothermometry Boolean logic model Weighted overlay model Djerid basin-Tunisia
类型	Article
语种	英语
国家	Tunisia
收录类别	SCI-E
WOS记录号	WOS:000514814800022
WOS关键词	CONTINENTAL INTERCALAIRE AQUIFER ; GEOCHEMICAL INTERPRETATION ; CHEMICAL-EQUILIBRIA ; SOUTHERN ALGERIA ; TRACE-ELEMENT ; AREA ; SUSTAINABILITY ; EXPLORATION ; RESERVOIRS ; EVOLUTION
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314048
作者单位	Natl Sch Engn, Water Energy & Environm Lab LR3E, BPW 3038, Sfax, Tunisia
推荐引用方式 GB/T 7714	Ben Brahim, Fatma,Boughariou, Emna,Makni, Jalila,et al. Evaluation of groundwater hydrogeochemical characteristics and delineation of geothermal potentialities using multi criteria decision analysis: Case of Tozeur region, Tunisia[J],2020,113.
APA	Ben Brahim, Fatma,Boughariou, Emna,Makni, Jalila,&Bouri, Salem.(2020).Evaluation of groundwater hydrogeochemical characteristics and delineation of geothermal potentialities using multi criteria decision analysis: Case of Tozeur region, Tunisia.APPLIED GEOCHEMISTRY,113.
MLA	Ben Brahim, Fatma,et al."Evaluation of groundwater hydrogeochemical characteristics and delineation of geothermal potentialities using multi criteria decision analysis: Case of Tozeur region, Tunisia".APPLIED GEOCHEMISTRY 113(2020).