| Autor: |
Githuku, Catherine Rwamba, Musyoka, Ndambuki Julius, Salim, Wanjala Ramadhan, Badejo, Adedayo A. |
| Zdroj: |
International Journal of Environment and Waste Management; 2021, Vol. 27 Issue: 3 p310-344, 35p |
| Abstrakt: |
Industries and mines discharge wastewaters that contain heavy metals that cause toxicity when accumulated beyond permissible limits in the environment and in living organisms. This study investigated the potential use of Phragmites australisin the removal of cadmium, chromium and lead from synthetic wastewaters using constructed wetlands (CWs). CW units made of plastic containers with dimensions of 0.56 m in diameter and 0.70 m deep were set up and planted with Phragmites australisseparately then intercropped with other macrophytes. Water, P. australisand soil samples were analysed for heavy metals. The removal efficiencies of metals by P. australiswere 96.66 ± 0.76%, 96.22 ± 1.61% and 76.08 ± 3.27% for Cd, Cr and Pb respectively. The metal accumulation results showed that Cd, Cr and Pb accumulated in the P. australisorgans in the order roots > stems > leaves. This study recommends further research into application of P. australisin treatment of Cd, Cr and Pb polluted wastewaters. |
| Databáze: |
Supplemental Index |
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