Determining biocide efficacy for treating established sulfate-reducing biofilms using flow cell systems.

ABSTRACT: Sulfate-reducing microorganisms (SRM) can contribute to souring and to the corrosion of infrastructure built to support many industrial operations, including in aquatic environments. While chemicals such as biocides can effectively treat planktonic cells, less is known about biocide efficacy for treating established biofilms potentially plaguing infrastructure. We used a biofilm flow cell system to examine the efficacy of sodium nitroprusside (SNP, a nitrosating compound proposed as a "green" biocide) and alkyl dimethyl benzyl ammonium chloride (ADBAC), a membrane-disrupting biocide used across many sectors, to mitigate existing SRM biofilms. Biofilms were treated with various amounts of SNP (15-750 ppm) or ADBAC (25-500 ppm) for 10-14 h. Biofilm responses were tracked by measuring sulfide

SUBMITTER: Okpala GN 

PROVIDER: S-EPMC12876176 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature