In this study, we are presenting results of one step from a
study that aspires to devise a sustainable low-cost heavy metals
treatment technology for textile wastewater based on a two-step
process: (1) heavy metals precipitation after sulphate reduction in
anaerobic bioreactors and (2) a polishing step by means of aquatic
treatment systems. The whole system constitutes an integrated
system for heavy metals treatment (Sekomo et al., 2011b). The
present study focuses on the second step, with the objective to
study the effect of heavy metal loads on their removal efficiency
and to find out how this is influenced by the light regime, pH and
redox potential conditions in duckweed (DP) and algae (AP) ponds