Influence of Spatial Heterogeneity and Hydrological Perturbations on Redox Dynamics: A Column Study

摘要: Abstract This study focuses on understanding the complex interactions between hydrological and biogeochemical processes specifically how these are affected by spatial heterogeneity at column scale. The hypothesis of this is that “regions with higher water flux will have redox potential”. To test hypothesis, flow experiments were conducted experimental soil columns different architecture collected from Norman Landfill site. a closed municipal facility prevalent organic contamination. sources variation in dataset explored using cluster analysis dominant under varying hydrologic conditions obtained reactive transport modeling. Sulfate reduction was found to be an important process within most columns. Results indicated while perturbations triggered reactions homogeneous columns, structural form clay lenses macropores enhanced activity modifying timescales.