Removal of nitrate and phosphate from aqueous solutions by microalgae: An experimental study
Publish Year: 1395
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_GJESM-2-4_003
تاریخ نمایه سازی: 9 خرداد 1396
Abstract:
The aim of this study was to evaluate the ability of microalgae Spirulina platensis and Chlorella vulgaris to remove nitrate and phosphate in aqueous solutions. Spirulina platensis and Chlorella vulgar is microalgae was collected in 1000 ml of municipal water and KNO3, K2HPO4was added as sources of nitrate and phosphate in three different concentrations (0.25, 0.35 and 0.45g/L). During the growth period, the concentration of nitrate and phosphate was recorded at 1, 4, 6 and 8 days. The highest nitrate removal on the 8 day for Chlorella vulgaris was 89.80% at the treatment of 0.25g/L and for Spirulina platensis was 81.49% at the treatment of 0.25g/L. The highest phosphate removal for Spirulina platensis was 81.49% at the treatment of 0.45g/L and for Chlorella vulgaris was 88% at the treatment of 0.45g/L. The statistical results showed that the amount of phosphate and nitrate removal during differenttime periods by Chlorella vulgaris depicted a significant difference at P<0.01, while Spirulina platensis demonstrateda significant difference at P<0.05.Thus, Spirulina platensis and Chlorella vulgaris can be effectively used to removenitrate and phosphate from effluent and waste water treatments, although it demands more research in different climatic conditions.
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Authors
M.H Sayadi
Department of Environmental Science, Faculty of Natural Resources and Environment, University of Birjand, Birjand, Iran
M Fallahi Capoorchali
Research Center, National Inland Water Aquaculture Institute, Anzali Port, Iran