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AuthorAlketife, Ahmed M.
AuthorJudd, Simon
AuthorZnad, Hussein
Available date2021-02-08T09:14:56Z
Publication Date2017
Publication NameEnvironmental Technology (United Kingdom)
ResourceScopus
URIhttp://dx.doi.org/10.1080/09593330.2016.1186227
URIhttp://hdl.handle.net/10576/17657
AbstractThe synergistic effects and optimization of nitrogen (N) and phosphorus (P) concentrations on the growth of Chlorella vulgaris (CCAP 211/11B, CS-42) and nutrient removal have been investigated under different concentrations of N (0 56 mg/L) and P (0 19 mg/L). The study showed that N/P ratio has a crucial effect on the biomass growth and nutrient removal. When N/P=10, a complete P and N removal was achieved at the end of cultivation with specific growth rate (SGR) of 1 d?1 and biomass concentration of 1.58 g/L. It was also observed that when the N content <2.5 mg/L, the SGR significantly reduced from 1.04 to 0.23 d?1 and the maximum biomass produced was decreased more than three-fold to 0.5 g/L. The Box Behnken experimental design and response surface method were used to study the effects of the initial concentrations (P, N and C) on P and N removal efficiencies. The optimized P, N and C concentrations supporting 100% removal of both P and N at an SGR of 0.95 were 7, 55 and 10 mg/L respectively, with desirability value of 0.94. The results and analysis obtained could be very useful when applying the microalgae for efficient wastewater treatment and nutrient removal.
Languageen
PublisherTaylor and Francis Ltd.
SubjectBox Behnken design
Chlorella vulgaris
nutrient removal
optimization
TitleSynergistic effects and optimization of nitrogen and phosphorus concentrations on the growth and nutrient uptake of a freshwater Chlorella vulgaris
TypeArticle
Pagination94-102
Issue Number1
Volume Number38
dc.accessType Abstract Only


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