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The production of dye is usually associated with several intermediate products and waste which are usually toxic and bio-hazardous and often disturb the environmental equilibrium. The present study is aimed at selecting macrophytes with the highest efficiency in the remediation of wastewater generated from dyeing activities. The test macrophytes were introduce into three different troughs for each plant containing 100% wastewater, 50% wastewater and control (100% borehole water). After 21 days the macrophytes were removed for further analysis. The reduction efficiency, Heavy metal bioconcentration and bio translocation factor of the macrophytes was determined. The result obtained shows that the test macrophytes improved the pH but were not able to improve the color of the wastewater. Lemna minor have the highest reduction efficiency for BOD, COD, Oil, and Grease while Pistia stratiotes have the highest reduction efficiency for TDS and TSS, Eicchornia crassipes have the highest reduction efficiency for Cl and Salvinia molesta have the highest reduction efficiency for phenol and ammonical Nitrogen. All macrophytes recorded high reduction efficiency for heavy metal removal but Pistia stratiotes and Eicchornia crassipes had the highest bioconcentration and translocation. These macrophytes should be introduced to the local dye users as a costless and environmentally friendly way of treating wastewater resulting from dyeing activity.

PHYTOREMEDIATION AS A TOOL FOR THE REMEDIATION OF WASTEWATER RESULTING FROM DYEING ACTIVITIES