Evaluating biocide efficacy in mixed-species biofilms: insights from a dual anaerobic biofilm reactor.

ABSTRACT: Understanding biocide performance in mixed-species biofilms is critical to mitigating microbiologically influenced corrosion (MIC). In this study, a novel dual anaerobic biofilm reactor was used to evaluate glutaraldehyde efficacy under environmentally relevant conditions, using a complex microbial consortium from marine sediment. Despite biocide dosing, biofilms persisted and induced localized corrosion, indicating incomplete mitigation. Each biocide application led to an electronegative shift in E _corr and a reduction in H2S concentration, suggesting partial suppression of microbial activity. Raman spectroscopy and profilometry revealed differences in corrosion product composition and pit morphology between biotic and abiotic systems. 16S rRNA sequencing showed enrichme

SUBMITTER: Jones L 

PROVIDER: S-EPMC12313519 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature