title: Harvesting of Scenedesmus obliquus FSP-3 using dispersed ozone flotation.
abstract: The Scenedesmus obliquus FSP-3, a species with excellent potential for CO(2) capture and lipid production, was harvested using dispersed ozone flotation. While air aeration does not, ozone produces effective solid-liquid separation through flotation. Ozone dose applied for sufficient algal flotation is similar to those used in practical drinking waterworks. The algae removal rate, surface charge, and hydrophobicity of algal cells, and fluorescence characteristics and proteins and polysaccharides contents of algogenic organic matter (AOM) were determined during ozonation. Proteins released from tightly bound AOM are essential to modifying the hydrophobicity of bubble surfaces for easy cell attachment and to forming a top froth layer for collecting floating cells. Humic substances in the suspension scavenge dosed ozone that adversely affects ozone flotation efficiency of algal cells.
authors.affiliation: Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan.
authors.forename: Ya-Ling
authors.initials: YL
authors.lastname: Cheng
authors.forename: Yu-Chuan
authors.initials: YC
authors.lastname: Juang
authors.forename: Guan-Yu
authors.initials: GY
authors.lastname: Liao
authors.forename: Pei-Wen
authors.initials: PW
authors.lastname: Tsai
authors.forename: Shih-Hsin
authors.initials: SH
authors.lastname: Ho
authors.forename: Kuei-Ling
authors.initials: KL
authors.lastname: Yeh
authors.forename: Chun-Yen
authors.initials: CY
authors.lastname: Chen
authors.forename: Jo-Shu
authors.initials: JS
authors.lastname: Chang
authors.forename: Jhy-Chern
authors.initials: JC
authors.lastname: Liu
authors.forename: Wen-Ming
authors.initials: WM
authors.lastname: Chen
authors.forename: Duu-Jong
authors.initials: DJ
authors.lastname: Lee
mesh_terms: D018929:Cell Culture Techniques / Q000379:methods*; D004326:Drinking; D005453:Fluorescence; D005740:Gases / Q000737:chemistry; D006812:Humic Substances / Q000032:analysis; D057927:Hydrophobic and Hydrophilic Interactions; D009930:Organic Chemicals / Q000032:analysis; D010126:Ozone / Q000737:chemistry*; D011134:Polysaccharides / Q000032:analysis; D011506:Proteins / Q000032:analysis; D044444:Scenedesmus / Q000502:physiology*
chemical_list: D005740:Gases; D006812:Humic Substances; D009930:Organic Chemicals; D011134:Polysaccharides; D011506:Proteins; D010126:Ozone