Int. J. Biosci.13( 5), 161-167, November 2018
One of the serious environmental problems in mining industry is Acid Mine Drainage (AMD) after mineral sulfides are exposed for oxidation-reduction. Acid water from AMD has devastating effect on aquatic natural resources and caused toxicity in plants, but here macrophytes were tested for its capability of increasing water pH. In an experiment following Completely Randomized Design involving five treatments replicated four times: T0 – Typha latifolia (Cattail), T1 – Centella asiatica (Gotu kola), T2 – Ipomoea aquatica (Water spinach), T3– Eichhornia crassipes (Water hyacinth), and T4– Bacopa monnieri (Water hyssop), it revealed that I. aquatica significantly increased the pH by 81%. It is as effective as T. latifolia (Cattail) – the control, in increasing pH of AMD after Analysis of Variance and Duncan Multiple Range Test (DMRT). A macrophyte Ipomoea aquatica (water spinach) therefore has the capacity to neutralize acidity in an Acid Mine Drainage (AMD).
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