Modelling of Scenedesmus obliquus; function of nutrients with modified Gompertz model
Yükleniyor...
Dosyalar
Tarih
2008
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Sci Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This study attempted to investigate variation in biovolume of Scenedesmus obliquus, in the modified Johnson medium at 20 +/- 2 degrees C, under 16 kerg cm(-2) s(-1) continuous illumination. The experiments were carried out at four nitrate (8, 12, 16, and 20 mM) and four phosphate (0.1, 0.3, 0.5 and 0.7 mM) concentrations at pH 7 and 8. The best response for algal growth was found at 0.3 mM phosphate and 12 mM nitrate at pH 7, as it was obtained from weight averaging method. Besides, optimum phosphate and nitrate concentrations significantly distinguished (p < 0.01) from other concentrations according to Tukey's HSD test. Key features of the growth of S. obliquus under phosphate and nitrate influenced batch culture was successfully predicted by modified Gompertz model. Through the cultivations, specific growth rate (p) ranged from 0.30 to 1.02 day(-1), while biovolume doubling time (td) varied from 0.68 to 2.30 days. There were important differences (p < 0.05) for both mu and td among response variables. Both nutrients displayed noteworthy effect (p < 0.01) on the algal biovolume. (C) 2008 Elsevier Ltd. All rights reserved.
Açıklama
Anahtar Kelimeler
Biovolume, Gompertz model, Nutrient, Scenedesmus Obliquus
Kaynak
Bioresource Technology
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
99
Sayı
18
