Comparison between coagulation-flocculation and ozone-flotation for Scenedesmus microalgal biomolecule recovery and nutrient removal from wastewater in a high-rate algal pond

被引：38

作者：

Oliveira, Gislayne Alves ^{[1
]}

Carissimi, Elvis ^{[1
]}

Monje-Ramirez, Ignacio ^{[2
]}

Velasquez-Orta, Sharon B. ^{[3
]}

Rodrigues, Rafael Teixeira ^{[4
]}

Orta Ledesma, Maria Teresa ^{[2
]}

机构：

[1] Univ Fed Santa Maria, Ctr Tecnol, Dept Pos Grad Engn Civil, BR-97105900 Santa Maria, RS, Brazil

[2] Univ Nacl Autonoma Mexico, Inst Ingn Coordinac Ingn Ambiental, Ciudad Univ, Mexico City 04510, DF, Mexico

[3] Newcastle Univ, Sch Chem Engn & Adv Mat, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[4] Univ Fed Rio Grande do Sul, Dept Engn Minas, Av Bento Goncalves, BR-91501970 Porto Alegre, RS, Brazil

来源：

BIORESOURCE TECHNOLOGY | 2018年 / 259卷

关键词：

Scenedesmus sp; Coagulation-flocculation; Ozone-flotation; Wastewater; High rate algal pond; BIOMASS PRODUCTION; LIPID EXTRACTION; HARVESTING MICROALGAE; BIODIESEL PRODUCTION; CELL DISRUPTION; LIGHT-INTENSITY; OBLIQUUS; PROTEINS; BIOFUELS; EFFLUENT;

D O I：

10.1016/j.biortech.2018.03.072

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The removal of nutrients by Scenedesmus sp. in a high-rate algal pond, and subsequent algal separation by coagulation-flocculation or flotation with ozone to recover biomolecules, were evaluated. Cultivation of Scenedesmus sp. in wastewater resulted in complete NH3-H removal, plus 93% total nitrogen and 61% orthophosphate removals. Ozone-flotation obtained better water quality results than coagulation-flocculation for most parameters (NH3-N, NTK, nitrate and nitrite) except orthophosphate. Ozone-flotation, also produced the highest recovery of lipids, carbohydrates and proteins which were 0.32 +/- 0.03, 0.33 +/- 0.025 and 0.58 +/- 0.014 mg/mg of biomass, respectively. In contrast, there was a low lipid extraction of 0.21 mg of lipids/mg of biomass and 0.12-0.23 mg of protein/mg of biomass in the coagulation-flocculation process. In terms of biomolecule recovery and water quality, ozone showed better results than coagulation-flocculation.

引用

页码：334 / 342

页数：9

共 6 条

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[6] High-rate algal pond for removal of pharmaceutical compounds from urban domestic wastewater under tropical conditions. Case study: Santiago de Cali, Colombia
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