Akatukunda, Roselyne2026-03-252026-03-252025-06Akatukunda, R. (2025). Potential of selected plant species for phytoremediation of heavy metals in soil, and wastewater sediment from Nakivubo wetland, Uganda.Kyambogo University (Unpublished work).https://hdl.handle.net/20.500.12504/2782xiii, 90 p. : col.Heavy metal pollution from industrial effluent has posed serious impacts on both humans and the environment. Several methods including chemical, biological, physical, and integrative approaches have been used to eliminate this kind of pollution. The study was conducted in Nakivubo wetland, Uganda, to assess the potential of phytoremediation as an eco-friendly and cost-effective method for removing heavy metals [Lead (Pb), Cadmium (Cd), Copper (Cu), and Arsenic (As)] from contaminated soil and wastewater sediments. Four plant species (Commelina benghalensis, Pennisetum purpureum, Sida acuta, and Cynodon dactylon) were analysed for their metal accumulation efficiency. Soil and wastewater sediment samples from four sites were analysed using Atomic Absorption Spectrophotometry (AAS). Results showed significant contamination, with Pb (4.66 - 83.49 mg/kg), Cd (0.65 - 1.49 mg/kg), Cu (5.64 - 52.09 mg/kg), and trace amounts of As (0.00 - 1.24 mg/kg) in soil, while wastewater sediments contained Pb (52.33 - 90.49 mg/kg), Cd (0.96 - 1.24 mg/kg), Cu (26.29 - 47.59 mg/kg), and As (0.08 - 0.28 mg/kg). All selected plant species effectively accumulated heavy metals. From soil, C. benghalensis was most efficient at accumulating Pb (39.82%) and Cd (171.3%), while C. dactylon was most effective for Cu (155.17%) and As (50.30%). In wastewater sediments, C. dactylon exhibited the highest Cu (137.51%) and As (116.83%) uptake, while C. benghalensis was most efficient for Pb (36.74%) and Cd (225.48%). High percentages of heavy metals in specific plants could have accumulated over time. Statistical analysis (p < 0.05) confirmed significant differences in metal accumulation. The Bio-concentration Factor, Translocation Factor, and Biological Absorption Coefficient values >1 indicated successful heavy metal uptake. C. benghalensis, P. purpureum, S. acuta, and C. dactylon are therefore effective phytoremediators and can be utilised for heavy metal cleanup in soil and wetlands.enPhytoremediationHeavy metalsEnvironmental aspectsSoil pollutionSediments (Geology)PollutionUgandaThesis