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Investigating Cobalt, Copper, and Lead in Sediments, Phragmites Mauritianus and Typha spp. from three Zambian Wetlands

  • 5 April, 2024
  • 14:00-16:00
  • IHE Delft, Water Resources and Ecosystems
  • prof.dr. Ken Irvine
  • dr. Peter Kelderman

This study investigated the extent to which Co, Cu, and Pb that enter through mining wastewaters were distributed from the inlet to the outlet of three wetlands in Zambia. The study also investigated the relationship between trace metals in sediments and plants, accumulation and distribution of the trace metals in two emergent wetland higher plants, Phragmites mauritianus and Typha spp. and the risk the trace metals in the sediments posed to the environment under changing redox potential. Greenhouse-based laboratory-scale constructed wetlands were set up to study the attenuation of Co, Cu, and Pb in wetlands operated as free Water Surface Constructed Wetlands (FWS-CWs) and the effect of drying and rewetting on wetlands’ abilities to retain the metals in sediments. The study also looked at the wetlands’ management plans and possible legislation to be enacted.

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Mulele Nabuyanda

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