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Title of article :
Dispersed ozone flotation of Chlorella vulgaris
Author/Authors :
Cheng، نويسنده , , Ya-Ling and Juang، نويسنده , , Yu-Chuan and Liao، نويسنده , , Guan-Yu and Ho، نويسنده , , Shih-Hsin and Yeh، نويسنده , , Kuei-Ling and Chen، نويسنده , , Chun-Yen and Chang، نويسنده , , Jo-Shu and Liu، نويسنده , , Jhy-Chern and Lee، نويسنده , , Duu-Jong، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Pages :
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Abstract :
Flotation separation of Chlorella vulgaris, a species with excellent potential for CO2 capture and lipid production, was studied using dispersed ozone gas. Pure oxygen aeration did not yield flotation. Conversely, applying ozone effectively separation algae from broth through flotation. The ozone dose applied for sufficient algal flotation is <0.05 mg/g biomass, much lower than those used in practical drinking waterworks (0.1–0.3 mg/g suspended solids). Main products, lipid C16:0, was effectively collected in the flotage phase. The algae removal rate, surface charge, and hydrophobicity of algal cells, and proteins and polysaccharides contents of algogenic organic matter (AOM) were determined. Certain quantities of proteins were present in the cultivated algal suspension, hence, minimal quantity of ozone was required to release intracellular proteins as surfactants to lead to effective flotation.
Keywords :
Algae , ozone , Harvesting , Flotation , Algogenic organic matters
Journal title :
Bioresource Technology
Journal title :
Bioresource Technology
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