Journal of
Oceanography and Marine Science

  • Abbreviation: J. Oceanogr. Mar. Sci.
  • Language: English
  • ISSN: 2141-2294
  • DOI: 10.5897/JOMS
  • Start Year: 2010
  • Published Articles: 60

Full Length Research Paper

Geochemistry and ionic interaction in the Bizerte Lagoon waters (Northern Tunisia)

Amor Ben Garali1*, Mohamed Ouakad1 and Moncef Gueddari2
  1Faculté des Sciences de Bizerte - Laboratoire de sédimentologie et géochimie marine - 7021 Zarzouna - Bizerte.  Tunisie. 2Faculté des Sciences de Tunis, Université El Manar. 1060 Tunis. Tunisie.
Email: [email protected]

  •  Accepted: 29 December 2010
  •  Published: 31 January 2011

Abstract

 

The Bizerte Lagoon is classified in the category of medium salinity environments. The lagoon geochemistry, with regard to the major ions, is essentially controlled by the continental contributions and interactions with the marine environment. The geochemical analyses of the major ions as well as their behaviour in the lagoon water permitted to describe the eventual ability of a solution chemical composition, to precipitate different minerals. Sampling and  geochemical analysis of the principal ions (Ca++, K+, Na+, Mg++, Cl-, SO42- and HCO3-) at  the water surface (0 to 2 m) and at the  bottom (over 2 m) of the lagoon (9 stations), in  the Channel (3 stations) and in  the bay of Bizerte (3 stations), was performed monthly during one year. The results for the Bizerte Lagoon waters show that only carbonates and gypsum can precipitate.

 

Key words: Water, Bizerte lagoon, ionic ratio, precipitation.