Investigation of growth kinetics and partial denitrification performance in strain Acinetobacter johnsonii under different environmental conditions.

ABSTRACT: A denitrifying strain ZY04 with a high nitrite-accumulating rate was isolated and purified from activated sludge in a laboratory-scale A²/O reactor. The strain was characterized and identified as Acinetobacter johnsonii by 16S rDNA phylogenetic analysis. The sequences of the key functional genes (napA, nirB, nirD) involved in partial denitrification were amplified via polymerase chain reaction, which provided a basis for exploring gene expression. The effects of different environmental factors (C/N ratio, pH and temperature) on the partial denitrification performance and transcriptional levels of the functional genes during the logarithmic growth phase were investigated by batch experiments. The results showed that the partial denitrification performa

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC6936282 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature