Naslov
Requirement of Acinetobacter junii for magnesium, calcium and potassium ions

Autori
Hrenović, Jasna ; Ivanković, Tomislav ; Rožić, Mirela

Izvornik
Journal of bioscience and bioengineering (1389-1723) 110 (2010), 2; 180-186

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Bacteria ; calcium ; magnesium: phosphate ; potassium ; wastewater

Sažetak
The goal of this study was to determine the concentrations of Mg, Ca and K ions required for the formation of metabolically active population of phosphate (P)-accumulating bacterium Acinetobacter junii. The availability of Mg, Ca and K originating from natural minerals in the conditions of severe shortage of these cations was tested. In the case of shortage of Mg, Ca and K ions in wastewater the P removal was absent due to the decay of A. junii. In the cases of Mg or K shortage in wastewater the P removal was negligible due to decay of A. junii, while Ca was not essential for the examined bacterium. The minimal required concentrations of Mg and K in synthetic wastewater were 0.64 mg Mg/ mg P and 0.50 mg K/mg P. The natural zeolitized tuffs and bentonite, either in Mg, Ca or K form, successfully replaced the lack of Mg, Ca, K and trace metals in wastewater. The requirement of A. junii for examined cations was in the order: Mg, K, Ca.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Grafička tehnologija

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