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Effect of low phosphorus concentration on the growth of Scenedesmus obliquus and phosphorus removal


Effect of low phosphorus concentration on the growth of Scenedesmus obliquus and phosphorus removal



Huan Jing Ke Xue= Huanjing Kexue 31(11): 2661-2665



ISSN/ISBN: 0250-3301

PMID: 21250448

Effects of phosphorus of low concentrations on the growth and the phosphorus removal efficiency of Scenedesmus obliquus were investigated in this study. Results showed that Scenedesmus obliquus achieved a phosphorus removal efficiency of 100% within 22 h when the initial algal cell concentration was 1 x 10(5) /mL and the initial phosphorus concentration was 0.02-0.10 mg/L. With the initial phosphorus concentration increased from 0.02 mg/L to 0.10 mg/L, both growth velocity of Scenedesmus obliquus and maximum biomass increased obviously. Research found that phosphorus concentration had a significant influence on cell morphology of algal. In the external phosphorus sufficient conditions, most of algae cell present as four cells gather round form, then transformed into two cells side by side form in the absence of external phosphorus in culture medium, Finally in single as the main form of existence.

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Accession: 052815533

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