Anti-bacterial Effects of MnO₂ on the Enrichment of Manganese-oxidizing Bacteria in Downflow Hanging Sponge Reactors.

ABSTRACT: We focused on the use of abiotic MnO₂ to develop reactors for enriching manganese-oxidizing bacteria (MnOB), which may then be used to treat harmful heavy metal-containing wastewater and in the recovery of useful minor metals. Downflow hanging sponge (DHS) reactors were used under aerobic and open conditions to investigate the potential for MnOB enrichment. The results of an experiment that required a continuous supply of organic feed solution containing Mn(II) demonstrated that MnOB enrichment and Mn(II) removal were unsuccessful in the DHS reactor when plain sponge cubes were used. However, MnOB enrichment was successful within a very short operational period when sponge cubes initially containing abiotic MnO₂ were installed. The results of a microbial community ana

SUBMITTER: Matsushita S 

PROVIDER: S-EPMC7734401 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature