Fig. 5From: Roles of extracellular polymeric substances in uranium immobilization by anaerobic sludgeSize distribution of nano-sized U particles in EPS extracts (diluted 200 times, each frequency equals to particle concentration of about 21.2 parts per mL). a Original sludge, Day 0; b Day 3; c Day 5; d Day 7. Influent concentration of U(VI) was 50 mg/L and no acetate was addedBack to article page