Effects of Ion Combinations and Their Concentrations on Denitrification Performance and Gene Expressions of an Aerobic Strain Marinobacter Hydrocarbonoclasticus RAD-2.

ABSTRACT: Salinity is one of the most important factors affecting the nitrogen-removal efficiency of denitrifying bacteria. A series of different ion combinations and salinity gradients were carried out to clarify the effects of ion types and concentrations on nitrogen removal by halophilic aerobic denitrifying bacteria RAD-2. Nitrate concentrations, nitrite concentrations, TAN concentrations, and OD₆₀₀ were monitored to investigate their effects on denitrification in each group. The results showed that Na⁺, K⁺, and Cl^- accelerated the denitrification process and improved nitrogen-removal efficiency at moderate additions, while Ca²⁺ and Mg²⁺ showed no significant effect. Na⁺ was effective alone, while K⁺ or Cl

SUBMITTER: Li J 

PROVIDER: S-EPMC10456938 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature