Research on Immobilized Ammonia-Oxidizing Bacteria by Sodium Alginate

Abstract:

Ammonia-oxidizing bacteria were immobilized by sodium alginate. Immobilized conditions and ammonium removal ability of immobilized cells were researched. The results showed that the optimal immobilized conditions were: 4.5% sodium alginate with 2.0% calcium chloride, 2000 immobilized balls, 1000mL immobilized medium, pH 8, 30°C, 110r/min. Immobilized ammonia-oxidizing bacteria were recycled six times under the optimal immobilized conditions. Immobilized ammonia-oxidizing bacteria at the optimal conditions had better ammonium removal ability than non-immobilized ammonia-oxidizing and were good for preservation. Removal rate of ammonia nitrogen of immobilized ammonia-oxidizing bacteria reached 89.51%.

• Periodical: Applied Mechanics and Materials (Volume 618)
• Pages: 283-287
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.618.283
• Online since: August 2014
• Authors: Yu Wei Dong*, Jing Zhi Miao, An Hui Chen
• Keywords: Ammonia-Oxidizing Bacteria, Immobilization, Sodium Alginate

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