In present study, higher Ni and Cr removal from RG wastewater was noted than reported by Dhir and
Srivastava (2011) using Salvinia natans from a multi-elemental
solution with 56.8% of Ni and 41.4% of Cr removal (Table 2). In
present study, Cd and Pb removal from RG wastewater were
slightly higher as compared to their removal by algal and duckweed pond as reported by Sekomo et al. (2012),