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Transport of P.aeruginosa ATCC 9027 in quartz sands mediated by low-concentration surfactants of SDBS or Triton X-100 was investigated with 1-D column experiments.The P.aeruginosa ATCC 9027 was cultured with glucose and hexadecane to produce cells with different initial cell surface hydrophobicity(CSH).Breakthrough curves of cells were obtained and simulated with kinetic attachment and kinetic attachment-detachment models with and without blocking to determine deposition rate coefficients(kd)using HYDRUS-1D.