Removal of nitrate and phosphate from municipal wastewater sludge by Chlorella Vulgaris, Spirulina Platensis and Scenedesmus Quadricauda

Khan Chowdhury, Ahmed Jalal and Alam, Md. Zahangir and W.A., Matin and Yunus, Kamaruzzaman and John, Akbar and Hossain, Toffazel (2011) Removal of nitrate and phosphate from municipal wastewater sludge by Chlorella Vulgaris, Spirulina Platensis and Scenedesmus Quadricauda. IIUM Engineering Journal, 12 (4). pp. 125-132. ISSN 1511-788X

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Abstract

Nitrate and phosphorus in wastewater contribute to health and environmental threats as they are linked to illnesses as well as ecosystem disruption via algal blooms in contaminated water bodies. Based on above perspectives a comparative study was conducted on three local freshwater microalgae:Chlorella vulgaris, Spirulina platensis and Scenedesmus quadricauda to evaluate their effects on nitrate and phosphorus removal from municipal wastewater sludge (MWS). Algae performance in removing nitrate and phosphorus was evaluated by measuring nitrate and phosphorus content of MWS incubated with the strains for 7 days. Instantaneous readings were taken every 48 hours to determine periodic levels of the nutrients phosphate and nitrate. BOD5 was also evaluated to identify the strain with the most robust growth that would demand for oxygen the most in the dark. Spirulina platensis was shown as the most efficient microalgae to reduce nitrate in MWS and the best-growing among the three strains, while Chlorella vulgaris removed phosphorus the most effectively. Thus Spirulina and Chlorella could be potential candidates by showing their intrinsic merit for the reduction of phosphate and nitrate in wastewater treatment.

Item Type:	Article (Journal)
Additional Information:	3575/17401
Uncontrolled Keywords:	Chlorella vulgaris; Spirulina platensis; Scenedesmus quadricauda; nitrate; phosphate; wastewater
Subjects:	Q Science > QK Botany
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science > Department of Biotechnology
Depositing User:	Mrs Maznah Zakaria
Date Deposited:	31 Jan 2012 13:45
Last Modified:	07 Dec 2017 13:20
URI:	http://irep.iium.edu.my/id/eprint/17401

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