Int. J. Environ. Res. Public Health 2013, 10(10), 5097-5110; doi:10.3390/ijerph10105097
Article

Characterization of a Bioflocculant Produced by a Consortium of Halomonas sp. Okoh and Micrococcus sp. Leo

Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice 5700, South Africa
* Author to whom correspondence should be addressed.
Received: 2 August 2013; in revised form: 25 September 2013 / Accepted: 1 October 2013 / Published: 16 October 2013
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Abstract: The physicochemical and flocculating properties of a bioflocculant produced by a bacterial consortium composed of Halomonas sp. Okoh and Micrococcus sp. Leo were investigated. The purified bioflocculant was cation and pH dependent, and optimally flocculated kaolin clay suspension at a dosage of 0.1 mg/mL. The flocculating activity of the bioflocculant was stimulated in the presence of Ca2+, Mn2+, Al3+ and had a wide pH range of 2–10, with the highest flocculating activity of 86% at pH 8. The bioflocculant was thermostable and retained more than 70% of its flocculating activity after being heated at 80 °C for 30 min. Thermogravimetric analyses revealed a partial thermal decomposition of the biofloculant at 400 °C. The infrared spectrum showed the presence of hydroxyl, carboxyl and amino moieties as functional groups. The bioflocculant produced by the bacterial consortium appears to hold promising alternative to inorganic and synthetic organic flocculants that are widely used in wastewater treatment.
Keywords: bioflocculant; flocculating activity; consortium; Halomonas sp. Okoh; Micrococcus sp. Leo

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MDPI and ACS Style

Okaiyeto, K.; Nwodo, U.U.; Mabinya, L.V.; Okoh, A.I. Characterization of a Bioflocculant Produced by a Consortium of Halomonas sp. Okoh and Micrococcus sp. Leo. Int. J. Environ. Res. Public Health 2013, 10, 5097-5110.

AMA Style

Okaiyeto K, Nwodo UU, Mabinya LV, Okoh AI. Characterization of a Bioflocculant Produced by a Consortium of Halomonas sp. Okoh and Micrococcus sp. Leo. International Journal of Environmental Research and Public Health. 2013; 10(10):5097-5110.

Chicago/Turabian Style

Okaiyeto, Kunle; Nwodo, Uchechukwu U.; Mabinya, Leonard V.; Okoh, Anthony I. 2013. "Characterization of a Bioflocculant Produced by a Consortium of Halomonas sp. Okoh and Micrococcus sp. Leo." Int. J. Environ. Res. Public Health 10, no. 10: 5097-5110.

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