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Consumption of Simulated Acid Mine Water by Sheep

West Virginia University, Morgantown 26506-6108

Abstract

Water consumption by sheep in 48-h periods was measured in three replicated experiments. Intake was expressed as ml·kg body weight^–.73·d^–1 and treatments were compared with intake of tap water or distilled water in no-choice situations. Neutralizing two acid mine drainage (AMD) polluted waters having pH values of 2.4 and 2.8, with Ca(OH)₂ did not make either as acceptable to sheep as unpolluted water (P<.01). Simulating AMD with sources of H⁺, HSO₄^–, SO₄⁼, Fe⁺⁺⁺, Al⁺⁺, Mn⁺⁺, Zn⁺⁺ or Na⁺ revealed several significant differences in acceptance. The ferric ion at 2.6 mM was rejected when presented as Fe₂(SO₄)₃ but not as equimolar FeCl₃. Moreover, SO₄ = at 3.9 mM was not rejected when presented as Na₂SO₄ or ZnSO₄. Neither AlSO₄ nor MnSO₄ at levels found in the two sources of AMD was rejected. Effects of prolonged consumption of the various components have not been determined.

¹ The assistance of Dr. Wm. Thayne, Experiment Station Statistician, Dr. J. Strohl, Assoc. Professor of Chemistry and M. Wendt, former laboratory assistant is appreciated. Funded in part by W. V. Mineral Resources Research Institute. Published with approval of the Director as West Virginia Agr. Exp. Sta. Sci. Paper No. 1934.