Harvesting of botryococcus sp. biomass from greywater by natural coagulants

Hauwa, Atiku and Radin Mohamed, Radin Maya Saphira and Abduh Algheethi, Adel Ali Saeed and Wurochekke, A. A. and Amir, H. K. (2017) Harvesting of botryococcus sp. biomass from greywater by natural coagulants. Waste and Biomass Valorization, 9 (19). pp. 1841-1853. ISSN 1877-2641

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Abstract

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 > TD429.5-480.7 Water purification. Water treatment and conditioning. Saline water conversion
Divisions:	Faculty of Civil Engineering and Built Environment > Department of Civil Engineering : Water and Environmental Engineering
Depositing User:	Miss Nur Rasyidah Rosli
Date Deposited:	09 Jan 2022 03:33
Last Modified:	09 Jan 2022 03:33
URI:	http://eprints.uthm.edu.my/id/eprint/5322

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