Fig. 6From: Bioflocculants’ production in a biomass-degrading bacterium using untreated corn stover as carbon source and use of bioflocculants for microalgae harvestEffects of various metal ions (0–15 mg L−1) on flocculating efficiency using kaolin clay suspension at pH 7.0 with the bioflocculant dosage of 12.5 mg L−1. a Monovalent cations (Na+ and K+); b bivalent cations (Ca2+ and Mg2+), and c trivalent cations (Al3+ and Fe3+). Data are the means of four replicates ± SEBack to article page