Description of waters pollution by crude O il at Ajdabiya, Libya

Saad Aboubaker Alzwi, Driss Belghyti


Water pollution comes from several industrial, agricultural and urban sources. Among these pollutants, petrochemicals waste, are dumped without treatment in the sea, lakes and ground in Libya. In our present work, the objective is to study the impact of waste from crude oil extraction on the environment of the Libyan region of Ajdabiya during the period 2013. The physico-chemical parameters are: Temperature (°C), pH, electrical conductivity (CE), TDS, CL-, NO3-, SO4--, HCO3-, Na+, Mg++, K+, Ca++, Salinity, Total Hardness (TH). The heavy metals followed are radium, lead, bismuth, actinium, thallium, uranium, iron (acidified and unacidified), fluoride, barium and strontium.

The mineralization faithfully follows the rates of dissolved salts. The electrical conductivity varies from 7880 to 46700 μs/cm and far exceeds the Libyan irrigation standards (>2700μs/cm). Concerning the nitrate their contents range from 230 to 1210 mg/L and clearly reflect the crude oil pollution origin. Radioactive elements are present and need particular attention

The Piper diagram and Wilcox-Riversade projections shows that the waters associated with crude oil have a chloride-sodium and potassium or sulphated sodic and slightly bicarbonated sodium or potassium facies. Moreover, the hydrophysicochemical plot shows that the quality of the water associated with the oil of Ajdabiya-Jalo Libya is poor and above all a degraded quality.


Hydrochimestry, Waters, Crude oil, Pollution, Ajdabiya, Libya

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