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Phycoremediation and valorization of synthetic dairy wastewater using microalgal consortia of Chlorella variabilis and Scenedesmus obliquus.
Environ Technol. 2021 Aug; 42(20):3231-3244.ET

Abstract

Microalgae are known to grow on wastewater utilizing their available nutrients. The residual algal biomass thus obtained could be used for producing value-added products thereby making it an economically viable and sustainable option for the dairy industry. The present study evaluates the ability of the microalgal consortia composed of Chlorella variabilis and Scenedesmus obliquus to treat and valorize diluted synthetic dairy wastewater under controlled laboratory conditions. The effect of time, inoculum concentration and light intensity on five responses, namely phosphate removal, ammoniacal nitrogen removal, COD removal, biomass productivity and lutein content, are studied by response surface methodology utilizing central composite design. The quadratic models are found to be suitable for phosphate removal, ammoniacal nitrogen removal, COD removal and biomass productivity. At optimized experimental conditions, the microalgal consortia exhibited phosphate removal of 70.19%, ammoniacal nitrogen removal of 86.22%, COD removal of 54.72%, biomass productivity of 29.13 mg/L/day and lutein content of 12.59 mg/g respectively. This study is of high importance as the lutein content exhibited by the microalgal consortia is higher when compared to other microalgal species and could be considered in the future as a commercial source of lutein.

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Authors+Show Affiliations

Gatamaneni Loganathan B
Faculty of Agricultural and Environmental Sciences, Department of Bioresource Engineering, McGill University, Sainte-Anne-de-Bellevue, Canada.
Orsat V
Faculty of Agricultural and Environmental Sciences, Department of Bioresource Engineering, McGill University, Sainte-Anne-de-Bellevue, Canada.
Lefsrud M
Faculty of Agricultural and Environmental Sciences, Department of Bioresource Engineering, McGill University, Sainte-Anne-de-Bellevue, Canada.

MeSH

BiofuelsBiomassChlorellaMicroalgaeNitrogenScenedesmusWastewater

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32009561

Citation

Gatamaneni Loganathan, Bhalamurugan, et al. "Phycoremediation and Valorization of Synthetic Dairy Wastewater Using Microalgal Consortia of Chlorella Variabilis and Scenedesmus Obliquus." Environmental Technology, vol. 42, no. 20, 2021, pp. 3231-3244.
Gatamaneni Loganathan B, Orsat V, Lefsrud M. Phycoremediation and valorization of synthetic dairy wastewater using microalgal consortia of Chlorella variabilis and Scenedesmus obliquus. Environ Technol. 2021;42(20):3231-3244.
Gatamaneni Loganathan, B., Orsat, V., & Lefsrud, M. (2021). Phycoremediation and valorization of synthetic dairy wastewater using microalgal consortia of Chlorella variabilis and Scenedesmus obliquus. Environmental Technology, 42(20), 3231-3244. https://doi.org/10.1080/09593330.2020.1725143
Gatamaneni Loganathan B, Orsat V, Lefsrud M. Phycoremediation and Valorization of Synthetic Dairy Wastewater Using Microalgal Consortia of Chlorella Variabilis and Scenedesmus Obliquus. Environ Technol. 2021;42(20):3231-3244. PubMed PMID: 32009561.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Phycoremediation and valorization of synthetic dairy wastewater using microalgal consortia of Chlorella variabilis and Scenedesmus obliquus. AU - Gatamaneni Loganathan,Bhalamurugan, AU - Orsat,Valerie, AU - Lefsrud,Mark, Y1 - 2020/02/11/ PY - 2020/2/6/pubmed PY - 2021/8/13/medline PY - 2020/2/4/entrez KW - Dairy wastewater KW - biomass productivity KW - lutein content KW - microalgal consortia KW - nutrient removal SP - 3231 EP - 3244 JF - Environmental technology JO - Environ Technol VL - 42 IS - 20 N2 - Microalgae are known to grow on wastewater utilizing their available nutrients. The residual algal biomass thus obtained could be used for producing value-added products thereby making it an economically viable and sustainable option for the dairy industry. The present study evaluates the ability of the microalgal consortia composed of Chlorella variabilis and Scenedesmus obliquus to treat and valorize diluted synthetic dairy wastewater under controlled laboratory conditions. The effect of time, inoculum concentration and light intensity on five responses, namely phosphate removal, ammoniacal nitrogen removal, COD removal, biomass productivity and lutein content, are studied by response surface methodology utilizing central composite design. The quadratic models are found to be suitable for phosphate removal, ammoniacal nitrogen removal, COD removal and biomass productivity. At optimized experimental conditions, the microalgal consortia exhibited phosphate removal of 70.19%, ammoniacal nitrogen removal of 86.22%, COD removal of 54.72%, biomass productivity of 29.13 mg/L/day and lutein content of 12.59 mg/g respectively. This study is of high importance as the lutein content exhibited by the microalgal consortia is higher when compared to other microalgal species and could be considered in the future as a commercial source of lutein. SN - 1479-487X UR - https://www.unboundmedicine.com/medline/citation/32009561/Phycoremediation_and_valorization_of_synthetic_dairy_wastewater_using_microalgal_consortia_of_Chlorella_variabilis_and_Scenedesmus_obliquus_ DB - PRIME DP - Unbound Medicine ER -