Assessment of trace metal soil pollution level and remediation: the case of the Penga-penga district in the city of Lubumbashi, Haut-katanga province in the Democratic republic of congo

Author(s)	M. Nathan MPIANA KIBWELA, M. Jean-Marc MADIHANO RWEMA, Prof. Dr. THIERRY MUSANDA, M. Gracien MUKENDI MUTOMBO
Country	Congo (Democratic)
Abstract	This study assesses urban soil pollution by trace metal elements at the Gécamines site in Penga-Penga. Analyses confirmed the presence of contamination, and chemical extraction tests showed that various agents (acetic acid, caustic soda, distilled water) can remove pollutants at different rates. For remediation, phytoremediation was evaluated using two plant species: Amaranthus viridis (amaranth) and Brassica chinensis (bok choy). The results revealed that these plants exhibit a high bioaccumulation capacity for specific metals, notably copper, cobalt, cadmium, and lead. In conclusion, the study proposes phytoremediation as an efficient, cost-effective, and sustainable method for decontaminating polluted soils.
Keywords	Soil pollution, Trace metal elements, Phytoremediation.
Field	Ingénierie
Published In	Volume 7, Issue 5, September-October 2025
Published On	2025-09-06
DOI	https://doi.org/10.36948/ijfmr.2025.v07i05.54891

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