Predictive modeling of biomass production by Spirulina platensis as function of nitrate and NaCl concentrations

详细信息    查看全文

• 作者：Abuzer Ç ; elekli ; Mehmet Yavuzatmaca
• 关键词：Biomass ; Modified models ; Nitrate ; Salt ; Spirulina platensis
• 刊名：Bioresource Technology
• 出版年：2009
• 出版时间：March 2009
• 年：2009
• 卷：100
• 期：5
• 页码：1847-1851
• 全文大小：341 K

文摘

Effects of nitrate (2.0, 2.5, and 3.0 g L⁻¹) and salt (0.5, 1.0, 1.5, 2.0 g L⁻¹) concentrations on biomass production by Spirulina platensis was examined in the Schlösser medium. The highest (p < 0.001) biomass yields and chlorophyll a content was observed at 2.5 g L⁻¹ nitrate and 1.5 g L⁻¹ NaCl as 3.495 g L⁻¹ and 29.92 mg L⁻¹, respectively. Increment rate of biomass production was especially found between 72 and 216 h. Modified Richards, Schnute, Logistic and Gompertz models was successfully predicted (r² > 0.96 and RSS  0.003) biomass production by S. platensis as function of nitrate and salt concentrations. Low residual sum of squares (RSS) and high regression coefficients (r²) indicated that used models were well fitted to the experiment data and it could be regarded as sufficient to describe biomass production of Spirulina sp. Biological variables i.e. production rate (μ) and lag time (λ) for S. platensis ranged 0.012–0.034 h⁻¹ and 2.43–5.85 h, respectively from biomass production were successfully predicted by modified Logistic model according to low RSS and F-testing value.