Revealing the characteristics of a novel bioflocculant and its flocculation performance in Microcystis aeruginosa removal

• DOI: 10.1038/srep17465
• Publication Date: 2015-12-02T10:29:42Z
• Authors: Pengfei Sun; Cai Hui; Naling Bai; Shengmao Yang; Li Wan; Qichun Zhang; YuHua Zhao
• Keywords: Microcystis aeruginosa; Zeta potential; Monosaccharide

Abstract In the present work, a novel bioflocculant, EPS-1, was prepared and used to flocculate kaolin suspension Microcystis aeruginosa . We focused on characteristics flocculation performance of especially with regard its protein components. An important attribute EPS-1 content, 18 types identified that occupied total content 31.70% in EPS-1. Moreover, flocculating activity these components estimated be no less than 33.93%. Additionally, polysaccharides 57.12% consisted four monosaccharides: maltose, D-xylose, mannose D-fructose. addition, carbonyl, amino hydroxyl groups were as main functional groups. Three elements, namely C1s, N1s O1s, relative atomic percentages 62.63%, 24.91% 10.5%, respectively. Zeta potential analysis indicated charge neutralization contributed flocculation, but not involved M. flocculation. The conditions optimized maximum efficiencies 93.34% within 2 min for 87.98% 10 These results suggest could an alternative chemical flocculants treating wastewaters cyanobacterium-polluted freshwater.