Figure 1

Estimated effects of independent variables on Pb2+ removal by Gelidium amansii biomass using Plackett-Burman design “the red color represents the most significant independent variables affecting Pb2+ removal”.

Estimated effects of independent variables on Pb2+ removal by Gelidium amansii biomass using Plackett-Burman design “the red color represents the most significant independent variables affecting Pb2+ removal”.