@article{fdi:010070150,
  title = {{G}lobal sensitivity analysis and {B}ayesian parameter inference for solute transport in porous media colonized by biofilms},
  author = {{Y}ounes, {A}nis and {D}elay, {F}. and {F}ajraoui, {N}. and {F}ahs, {M}. and {M}ara, {T}.{R}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he concept of dual flowing continuum is a promising approach for modeling solute transport in porous media that includes biofilm phases. {T}he, highly dispersed transit time distributions often generated by these media are taken into consideration by simply stipulating that advection-dispersion transport occurs through both the porous and the biofilm phases. {B}oth phases are coupled but assigned with contrasting hydrodynamic properties. {H}owever, the dual flowing continuum suffers from intrinsic equifinality in the sense that the outlet solute concentration can be the result of several parameter sets of the two flowing phases. {T}o assess the applicability of the dual flowing continuum, we investigate how the model behaves with respect to its parameters. {F}or the purpose of this study, a {G}lobal {S}ensitivity {A}nalysis ({GSA}) and a {S}tatistical {C}alibration ({SC}) of model parameters are performed for two transport scenarios that differ by the strength of interaction between the flowing phases. {T}he {GSA} is shown to be a valuable tool to understand how the complex system behaves. {T}he results indicate that the rate of mass transfer between the two phases is a key parameter of the model behavior and influences the identifiability of the other parameters. {F}or weak mass exchanges, the output concentration is mainly controlled by the velocity in the porous medium and by the porosity of both flowing phases. {I}n the case of large mass exchanges, the kinetics of this exchange also controls the output concentration. {T}he {SC} results show that transport with large mass exchange between the flowing phases is more likely affected by equifinality than transport with weak exchange. {T}he {SC} also indicates that wealdy sensitive parameters, such as the dispersion in each phase, can be accurately identified. {R}emoving them from calibration procedures is not recommended because it might result in biased estimations of the highly sensitive parameters.},
  keywords = {},
  booktitle = {},
  journal = {{J}ournal of {C}ontaminant {H}ydrology},
  volume = {82},
  numero = {},
  pages = {1--18},
  ISSN = {1364-8152},
  year = {2016},
  DOI = {10.1016/j.jconhyd.2016.04.007},
  URL = {https://www.documentation.ird.fr/hor/fdi:010070150},
}