A biofilm reactor packed with aspen wood and polyurethane sponge for biological manganese(II) oxidation and minor metal recovery.

ABSTRACT: Biogenic manganese oxides (MnOx) are promising agents for the removal and recovery of minor metals from water. However, cultivating heterotrophic Mn(II)-oxidizing microorganisms in non-sterile bioreactors remains difficult, and few continuous-flow reactor designs have been evaluated for their ability to recover minor metals under such conditions. In this study, we operated a laboratory-scale biofilm reactor packed with aspen wood and a polyurethane sponge for 469 d to evaluate its feasibility for biogenic MnOx production. Aspen wood served as a solid-phase organic substrate, the biodegradation of which provided a continuous release of soluble organic substrates to sustain the growth of heterotrophic Mn(II)-oxidizing microorganisms. The maximum mean dissolved Mn(II) removal rate by the reac

SUBMITTER: Aoki M 

PROVIDER: S-EPMC12672754 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature