Figure 3
From: Chromium (III) removal by perennial emerging macrophytes in floating treatment wetlands

Percentage of total added Cr(III) bound by Phragmites australis (Pa) and Iris pseudacorus (Ip) in a floating treatment wetland, as determined by a mass balance. ‘plants’ refers to Cr bound in plant biomass, while ‘precipitated' means Cr precipitated or sorbed on the reactor walls.