Effects of Channel Characteristics on Wastewater Chemical Transformation in Rivers.

ABSTRACT: Microbially-mediated transformations are important for removing wastewater chemicals in rivers. In-stream degradation rates are likely to be affected by channel morphology and size because these factors determine the extent of chemical contact between the water column and the microbial community in fixed biofilms, where most microbially-mediated processes are expected to take place. We hypothesize that transformation rate constants are inversely proportional to hydraulic radius (R: the ratio of channel cross-sectional area to wetted perimeter). Microbial transformations are also predicted to be controlled systematically by bed sediment characteristics. This will be a function of sediment surface area per unit volume (for biofilm colonisation) and hyporheic exchange. Here, we test th

SUBMITTER: Newbould RA 

PROVIDER: S-EPMC12876528 | biostudies-literature | 2026

REPOSITORIES: biostudies-literature