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Harvesting of Botryococcus sp. biomass from greywater by natural coagulants

Hauwa, A. and Radin Mohamed, R. M. S. and Algheethi, A. A. and Wurochekke, A. A. and Mohd Kassim, Amir Hashim (2017) Harvesting of Botryococcus sp. biomass from greywater by natural coagulants. Waste Biomass Valor, 5 (1). ISSN 1877265X

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Harvesting of Botryococcus sp. from greywater by Moringa oleifera and Strychnos potatorum seed flours was optimized by response surface methodology. Three factors including dosage (10–60 mg L−1), settling time (30– 120 min), and pH (6–9) were investigated. Optimal operating parameters were obtained with dosage of 35 mg L−1, pH of 7.5, and settling time of 75 min, which demonstrated predicted and experimental recovery of 86.80 and 85.60% for M. oleifera, and 41.33 and 38.30% for S. potatorum, with R2 coefficient of 0.947 and 0.953, respectively. The interaction between the factors was significant (p < 0.05) at the optimal operating parameters. Scanning electron microscope (SEM) observed that the surface appearance of M. oleifera seed flour was smoother compared to S. potatorum, which reflects the higher potential of M. oleifera seed flour to adhere to microalgae cells. Natural coagulants have the potential as an alternative technique for harvesting microalgae from greywater.

Item Type: Article
Uncontrolled Keywords: Moringa oleifera; strychnos potatorum; SEM; flocculation
Subjects: T Technology > TD Environmental technology. Sanitary engineering > TD201-500 Water supply for domestic and industrial purposes
Divisions: Faculty of Civil and Environmental Engineering > Department of Water and Environmental Engineering
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 13 Aug 2018 03:14
Last Modified: 13 Aug 2018 03:14
URI: http://eprints.uthm.edu.my/id/eprint/9480
Statistic Details: View Download Statistic

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