Humic acid transport in saturated porous media: Influence of flow velocity and influent concentration

摘要: Understanding the transport of humic acids (HAs) in porous media can provide important and practical evidence needed for accurate prediction organic/inorganic contaminant different environmental interfaces. A series column experiments was conducted to evaluate HA at flow velocities influent concentrations. Low velocity concentration were found favor adsorption deposition onto sand grains packed into columns give higher equilibrium distribution coefficients rate coefficients, which resulted an increased fraction being retained columns. Consequently, retardation factors through delayed. These results suggest that is primarily controlled by attachment solid matrix. Accordingly, this should be considered studies behavior media.