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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 11, No. 4, 2007, pp. 19-24
Bioline Code: ja07087
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Applied Sciences and Environmental Management, Vol. 11, No. 4, 2007, pp. 19-24

 en Physicochemical Properties Of Pit-water From Ishiagu Lead/ Zinc (Pb/Zn) Mine As An index For Alkaline Classification Of The Mine Drainage.
Aroh, K.N.; Eze, C.L.; Abam, T.K.S.; Gobo, A.E. & Ubong, I.U.


The nature and chemical composition of mine pit-water was investigated in Ishiagu lead/zinc (Pb/Zn) mine in southeastern, Nigeria. Laboratory determination of some physicochemical parameters namely, temperature, total dissolved solids (TDS), conductivity , chloride, pH, alkalinity, hardness, sulphate and dissolved metal constituents like calcium and magnesium were assessed in the three mine pits using standard methods. The results showed that Ishiagu Pb/Zn mine is slightly acidic with moderate levels of dissolved metal constituents. Seasonal variation observed in the parameters indicate higher levels for pH (6.7-8.1), alkalinity (36.4--115.3mg/l) and sulphate (6.8-84.4) in the wet season when compared with corresponding values, pH (6.1-7.3), alkalinity (31.3- 98.4mg/l) and sulphate (6.1-78mg/l) in the dry season. The consistently the higher levels of pH, alkalinity, hardness, calcium, magnesium, total dissolved solids (TDS) and conductivity in more than 66% of the mine pits (mine 1and mine 3) investigated across the season is an indication of changing state of the mine pit-water to more alkaline mine drainage. This phenomenon is attributable to preponderance and buffering effect of carbonate minerals in the area.

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