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Influence of pathogenic bacterial activity on growth of Scenedesmus sp. and removal of nutrients from public market wastewater

Al-Gheethi , A. A. and Mohamed, R. M. and Jais, N. M. and Efaq, A. N. and Abd Halid, Abdullah and Wurochekke, A. A. and Amir-Hashim, M. K. (2017) Influence of pathogenic bacterial activity on growth of Scenedesmus sp. and removal of nutrients from public market wastewater. Journal of Water and Health, 15 (5). pp. 741-756. ISSN 14778920

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Abstract

The present study aims to investigate the influence of Staphylococcus aureus, Escherichia coli and Enterococcus faecalis in public market wastewater on the removal of nutrients in terms of ammonium (NH4 – ) and orthophosphate (PO4 3 ) using Scenedesmus sp. The removal rates of NH4 – and orthophosphate PO43– and batch kinetic coefficient of Scenedesmus sp. were investigated. The phycoremediation process was carried out at ambient temperature for 6 days. The results revealed that the pathogenic bacteria exhibited survival potential in the presence of microalgae but they were reduced by 3–4 log at the end of the treatment process. The specific removal rates of NH4 – and PO43– have a strong relationship with initial concentration in the public market wastewater (R2 ¼ 0.86 and 0.80, respectively). The kinetic coefficient of NH-4 removal by Scenedesmus sp. was determined as k ¼ 4.28 mg NH4 – 1 log10 cell mL–1 d–1 and km ¼ 52.01 mg L–1 (R2 ¼ 0.94) while the coefficient of PO43– removal was noted as k ¼ 1.09 mg NH4 – 1 log10 cell mL–1 d–1 and km ¼ 85.56 mg L–1 (R2 ¼ 0.92). It can be concluded that Scenedesmus sp. has high competition from indigenous bacteria in the public market wastewater to remove nutrients, with a higher coefficient of removal of NH-4 than PO4 3 .

Item Type: Article
Uncontrolled Keywords: Batch kinetic coefficient; growth rate; pathogens; public market wastewater; removal rate
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: 16 Jan 2019 08:00
Last Modified: 16 Jan 2019 08:00
URI: http://eprints.uthm.edu.my/id/eprint/10526
Statistic Details: View Download Statistic

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