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Dynamics of Ions in Soils Irrigated with Saline Reject

Author

Listed:
  • Andler Oliveira
  • Cezar Rebouças
  • Nildo Dias
  • Francisco Sousa Júnior
  • Francisco Sá
  • Osvaldo Sousa Neto
  • Alexandre Lima
  • Cleyton Fernandes

Abstract

The objective of this work was to evaluate the variation in the electrical conductivity and the mobilization of ions present in reject brine from desalination plant of brackish well water in three types of soil. The mobilization of the contaminant ions in the reject brine was studied in glass percolation columns, which were filled with soil of contrasting textures (eutrophic CAMBISOL, typic dystrophic Red OXISOL, ENTISOL Quartzipsamment). Experiments ware repeated three times each, and the initial and final concentrations of the ion contaminants were analyzed. The pollution potential of this residue was determined by the retardation factor and dispersion-diffusion coefficient of Ca2+ and Mg2+, besides the variation of electrical conductivity along the profile of each soil studied. In the Red Oxisol, Ca2+ and Mg2+ ions move with greater ease resulting in possibility largest of potential of ground water contamination. In Entisol Quartzipsamment presented higher Mg2+ (R) ion advancement speed, that is, higher subsurface contamination power for these ions. The eutrophic Cambisol presented low diffusion-dispersion coefficient in all the evaluated ions and, therefore, lower mobility of the ions in the soil profile, and consequently, a greater possibility of contamination when irrigated with reject brine.

Suggested Citation

  • Andler Oliveira & Cezar Rebouças & Nildo Dias & Francisco Sousa Júnior & Francisco Sá & Osvaldo Sousa Neto & Alexandre Lima & Cleyton Fernandes, 2017. "Dynamics of Ions in Soils Irrigated with Saline Reject," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 9(11), pages 190-190, October.
  • Handle: RePEc:ibn:jasjnl:v:9:y:2017:i:11:p:190
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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