Interference of manganese removal by biologically-mediated reductive release of manganese from MnO_x(s) coated filtration media.

ABSTRACT: Discontinuing application of pre-filter chlorine is a common water treatment plant practice to permit a bioactive filtration process for the removal of soluble Mn. However, soluble Mn desorption has sometimes been observed following cessation of chlorine addition, where filter effluent Mn concentration exceeds the influent Mn concentration. In this paper it is hypothesized that Mn-reducing bacteria present in a biofilm on the filter media may be a factor in this Mn-release phenomenon. The primary objective of this research was to assess the role of Mn-reducing microorganisms in the release of soluble Mn from MnO_x(s)-coated filter media following interruption of pre-filtration chlorination. Bench-scale filter column studies were inoculated with Shewanella oneidensis MR-1 t

SUBMITTER: Swain LE 

PROVIDER: S-EPMC6549940 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature