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Effect of mass concentration of immobilized Spirulina platensis on nitrogen removal from simulated shrimp pond water

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Author(s): Patama Lerksasen | Chalermraj Wantawin

Journal: Songklanakarin Journal of Science and Technology
ISSN 0125-3395

Volume: 29;
Issue: 6;
Start page: 1675;
Date: 2007;
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Keywords: immobilization | polyester | Spirulina platensis | simulated shrimp pond water

ABSTRACT
Spirulina platensis strain BP immobilized on fibrous polyester mat was applied for nitrogen removal from simulated shrimp pond water. Different S. platensis mass on mat was built up during immobilizing process by varying the amount of batch fed suspended S. platensis cells. During immobilization, 0.2 OD560 S. platensis was replenished to reactor and chlorophyll-a in the solution was monitored. The immobilized S. platensis mass was 63, 49 and 19 g dw-S. platensis/m2 for Sp V-1, Sp IV-1 and Sp II-1 mat reactors adding five, four and two times of 0.2 OD560 S. platensis respectively. In accordance with statistic, the results of nitrogen removal tests by applying those immobilized mats in circulated batch system reactors loaded with 1.94 gN/m2-d showed that there were significant differences on ammonia removal among the different initial S. platensis mass on mats (ANOVA; P
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