Denitrification performance of Pseudomonas fluorescens Z03 immobilized by graphene oxide-modified polyvinyl-alcohol and sodium alginate gel beads at low temperature.

ABSTRACT: Improving the effect of microbial denitrification under low-temperature conditions has been a popular focus of research in recent years. In this study, graphene oxide (GO)-modified polyvinyl-alcohol (PVA) and sodium alginate (SA) (GO/PVA-SA) gel beads were used as a heterotrophic nitrification-aerobic denitrification (HN-AD) bacteria (Pseudomonas fluorescens Z03) carrier to enhance nitrogen removal efficiency levels at low temperatures (6-8°C). The removal efficiency of N H 4     + -N and N O 3       - -N and the variations in concentrations of extracellular polymeric substances (EPS) under different GO doses (0.03-0.15 g l^-1) were studied. The results indicated that the addition of GO can improve the efficiency of nitrogen removal, and the highest removal efficiency le

SUBMITTER: Tang M 

PROVIDER: S-EPMC7137976 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature