Abstract
Nitrobacter agilis was entrapped in calcium alginate beads and used as a floating bed supplied with a continuous flow of nitrite medium. Complete nitrite oxidation was achieved within 30 h, and the system could be maintained for at least 210 h. The immobilized Nitrobacter system was subjected to sulfur oxyanions, acidity, and metal ions. Thiosulfate and tetrathionate (up to 20 mM each) did not inhibit the nitrite oxidation activity. A low pH of 4.2 resulted in the complete cessation of nitrite oxidation, and the activity was not restored upon increasing the pH to 7. Nitrite oxidation by N. agilis was sensitive to 10 mM each Ni2+ and Al3+ but insensitive to 10 mM MoO42−.
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- Belser L. W. Bicarbonate Uptake by Nitrifiers: Effects of Growth Rate, pH, Substrate Concentration, and Metabolic Inhibitors. Appl Environ Microbiol. 1984 Dec;48(6):1100–1104. doi: 10.1128/aem.48.6.1100-1104.1984. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Bhuiya Z. H., Walker N. Autotrophic nitrifying bacteria in acid tea soils from Bangladesh and Sri Lanka. J Appl Bacteriol. 1977 Apr;42(2):253–257. doi: 10.1111/j.1365-2672.1977.tb00690.x. [DOI] [PubMed] [Google Scholar]
- LOWRY O. H., ROSEBROUGH N. J., FARR A. L., RANDALL R. J. Protein measurement with the Folin phenol reagent. J Biol Chem. 1951 Nov;193(1):265–275. [PubMed] [Google Scholar]