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AuthorAl Ketife, Ahmed MD
AuthorJudd, Simon
AuthorZnad, Hussein
Available date2020-10-12T09:21:46Z
Publication Date2017
Publication NameJournal of Chemical Technology and Biotechnology
ResourceScopus
URIhttp://dx.doi.org/10.1002/jctb.5084
URIhttp://hdl.handle.net/10576/16381
AbstractBACKGROUND The application of Chlorella vulgaris for simultaneous CO2 biofixation and nutrient removal has been optimised using response surface methodology (RSM) based on Box Behnken design (BBD). Experimental conditions employed comprised CO2 concentrations (Cc,g) of 0.03–22% CO2, irradiation intensities (I) of 100–400 μE, temperatures of 20–30 °C and nutrient concentrations of 0–56 and 0–19 mg L−1 nitrogen and phosphorus, respectively, the response parameters being specific growth rate μ, CO2 uptake rate Rc and %nutrient removal. RESULTS Over 10 days the biomass concentration reached almost 3 g L−1 for Cc,g of 5% CO2, with corresponding values of 0.74 g L−1 day−1 and 1.17 day−1 for Rc and μ, respectively, and 100% nutrient (N and P) removals. At 22% CO2 the Rc and μ decreased by around an order of magnitude, and nutrient removal also decreased to 79% and 50% for N and P, respectively. CONCLUSION Optimum values 5% CO2, 100 μE and 22 °C were identified for Cc,g, I and T, respectively, with μ and Rc reaching 1.53 day−1 and 1 g L−1 day−1, respectively, along with associated nutrient removal of 100%. Regression analysis indicated a good fit between experimental and model data
SponsorThis work was made possible by the support of a National Priorities Research Programme (NPRP) grant from the Qatar National Research Fund (QNRF), grant reference number NPRP 6-1436-2-581. The statements made herein are solely the responsibility of the authors.
Languageen
PublisherJohn Wiley and Sons Ltd
Subjectalgae
Box-Behnken
Chlorella vulgaris
optimisation
photobioreactor
TitleOptimization of cultivation conditions for combined nutrient removal and CO2 fixation in a batch photobioreactor
TypeArticle
Pagination1093
Issue Number5
Volume Number92
dc.accessType Abstract Only


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