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Groundwater quality and geothermal energy. The case of Cerro Prieto Geothermal Field, México

Author

Listed:
  • Armienta, Maria Aurora
  • Rodríguez, R.
  • Ceniceros, N.
  • Cruz, O.
  • Aguayo, A.
  • Morales, P.
  • Cienfuegos, E.

Abstract

The influence of the Cerro Prieto Geothermal Field (CPGF) on groundwater quality of the close-by agricultural area was evaluated by means of chemical and isotopic determinations. According to irrigation standards, concentrations of As, Cd, Pb, Crtot, Cr(VI), Cu, Cd, Hg, B in agricultural wells showed the suitability of the water for irrigation. Iron was below irrigation limits in all but one well. However, chloride levels were above those limits in 83 out of 87 collected samples. Isotopic determinations of δ2H, δ18O, δ34S, δ13C, and spatial concentration trends of elements related with geothermal brines and toxic metals and metalloids did not indicate an influence of the CPGF to groundwater in the nearby agricultural area. Isotopic values of δ2H, δ18O showed the occurrence of evaporation processes and infiltration of canal's irrigation water to geothermal water reservoirs and to groundwater in the agricultural zone. High chloride concentrations might be associated with these processes.

Suggested Citation

  • Armienta, Maria Aurora & Rodríguez, R. & Ceniceros, N. & Cruz, O. & Aguayo, A. & Morales, P. & Cienfuegos, E., 2014. "Groundwater quality and geothermal energy. The case of Cerro Prieto Geothermal Field, México," Renewable Energy, Elsevier, vol. 63(C), pages 236-254.
    • Handle: RePEc:eee:renene:v:63:y:2014:i:c:p:236-254
    DOI: 10.1016/j.renene.2013.09.018
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