Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
Vol. 19, No. 3, 2015, pp. 453-456
Bioline Code: ja15058
Full paper language: English
Document type: Research Article
Document available free of charge
Journal of Applied Sciences and Environmental Management, Vol. 19, No. 3, 2015, pp. 453-456
© Copyright 2015 - Journal of Applied Sciences and Environmental Management
The Absorption of Nitrate and Phosphate from Urban Sewage by Blue-Green Algae (Spirolina Platensis) (An Alternative Medium) as Application for Removing the Pollution|
LAVAJOO, F.; THAHERIZADE, M. & DEHGHANI, M.
The applications of blue green algae for the treatment of urban and industrial
sewage have received more attention during the recent years because they have the capacity to
use nitrogenous compounds, ammonia and phosphates. In this study aimed to evaluate the
ability of Spirolina Platensis for absorption of nitrate and phosphate from urban sewage. The
experiment was conducted in 6 treatments as a growth medium. To test these predictions, we
conducted a 15 days in indoor place under similar laboratory conditions at temperature (30ºC ±
2ºC), Light (2500 ± 500) Lux, pH between 8.0 and 11and with constant aeration. Regarding the
culture media, a higher algal density was observed in the cultivation developed at treatment 5
(824 ±102 cell. mL-1). In our results showed higher efficiencies of phosphorus removal by S.
platensis as compare to nitrate removal thus, S. platensis would be effective for nitrate removal
only at relatively low concentrations and phosphorus removal at high concentrations.
Chlorophyll-a, content in treatment 3 was higher than other treatments. Kruscal-Wallis test
showed a significant difference in treatments at the level of P<0.05. Thus, we recommend here
that Spirolina platensis to be better candidate for absorption phosphate more than nitrate and it
could be used for the removal or biotransformation urban sewage.
Blue-Green Algae; Spirolina; Nitrate; Phosphate; Sewage; Pollution