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Abstract
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Article Information:
Assessing Factors Controlling the Hydrochemistry and Suitability for Irrigation Purposes of Aquifer AQ-2 in Pointe-Noire, South-West Congo-Brazzaville
C. Tathy, L. Matini, G. Moukandi Nkaya and B. Mabiala
Corresponding Author: Christian Tathy
Submitted: 2011 April, 21
Accepted: 2011 June, 10
Published: 2011 July, 25 |
Abstract:
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The groundwater of AQ-2 in Pointe-Noire (south-west town of Congo-Brazzaville) was assessed for
factors controlling the hydrochemistry and its irrigation suitability. Thirty three groundwater samples collected
from 11 piezometers were analyzed for physical parameters such as: pH, temperature (T), Total Dissolved
Solids (TDS); major cations: Ca2+, Mg2+, Na+, K+ and anions Cl- , SO42- , HCO3-. Factor analysis revealed four
factors associated with the mineralization, alkalinity, temperature and pH of the groundwater. Some indexes
which can influence the groundwater quality for irrigation were determined: Sodium Adsorption Ratio (SAR),
percent of sodium (%Na), Residual Sodium Carbonate (RSC), Permeability Index (PI) and Potential Salinity
(PS). These indexes for water irrigation were compared with standard limits. They have been found within the
safe limit suitable for irrigation. The total dissolved solids in the groundwater were lower than 1500 mg/L, this
denotes that irrigation using groundwater of aquifer AQ-2 in Pointe-Noire would not cause salinity hazards.
Key words: Factor analysis, groundwater, irrigation water, Pointe-Noire, , ,
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Abstract
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Cite this Reference:
C. Tathy, L. Matini, G. Moukandi Nkaya and B. Mabiala, . Assessing Factors Controlling the Hydrochemistry and Suitability for Irrigation Purposes of Aquifer AQ-2 in Pointe-Noire, South-West Congo-Brazzaville. Research Journal of Applied Sciences, Engineering and Technology, (07): 617-624.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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