Abstract
In order to evaluate the effect of agricultural crops, such as kenaf (Hibiscus Cannabinus L.), corn (Zea Mays), and barley (Hordeum vulgare), in the removal of Cr and Pb from soil irrigated with wastewater, an experimental pot was conducted at Green House of University of Technology. Three levels of water were used for irrigation included tap water (control) (T1), 50% of wastewater+50% of tap water (50%WW) (T2) and 100% wastewater (100%WW) (T3). The obtained results, indicated that kenaf, and barley have been an effective plant in removal of Cr and Pb due to its high removal efficiency. Maximum values of removal efficiency were recorded in August 2015 for the (100%WW) and found 85.59%, 82.77, 93.27% of Pb and 85.67, 93.85, 87.24% of Cr for corn, kenaf and barley, respectively. Minimum removal efficiencies recorded at (50%WW) treatment for Pb were (5.66, 4.48, 0.99% ) and at control treatment for Cr were ( 0.99, 1.51, 2.37%) for Cr in May 2015 for corn, kenaf and barley, respectively. From the results obtained, kenaf, and barley were effective in removal of Cr and Pb due to its high removal efficiencies.
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