کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
683615 | 889003 | 2009 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Modeling of biomass production by Spirulinaplatensis as function of phosphate concentrations and pH regimes Modeling of biomass production by Spirulinaplatensis as function of phosphate concentrations and pH regimes](/preview/png/683615.png)
Batch cultivations were performed to evaluate the influence of phosphate concentrations (0.25, 0.5, 0.75, and 1.0 g L−1) for pH regimes (9.5, 10.0, and 10.5) on the biomass production by Spirulina platensis. The best condition for cell growth (3.099 g L−1) was found at 0.5 g L−1 phosphate and pH value of 10.0. Cultivation time, phosphate, and pH caused to increase significantly (p < 0.01) in biomass production by S. platensis. Lag time was observed up to 4 h. After then, biomass production increased sharply (p < 0.01) from 0.020 g L−1 to 2.063, 2.213, 1.532, and 0.797 g L−1 at 0.25, 0.5, 0.75, and 1.0 g L−1 phosphate values, respectively. Modified Gompertz model could be regarded as sufficient to describe the biomass production by S. platensis with high determination coefficients and low sum of square value indicated that. Biological parameters for biomass production were successfully predicted by modified Gompertz model.
Journal: Bioresource Technology - Volume 100, Issue 14, July 2009, Pages 3625–3629