Recent applications of a relatively new soil treatment process for the elimination of gaseous malodors emanating from water quality control operations are noted. The study was directed toward an investigation of the chemical aspects of H2S removal by both moist and dry sterile soils. Batch scale tests were utilized to study the effect of temperature on removal efficiency, the ability of a soil to be rejunenated, the desirability of certain common cations in the soil, and selection of an easily measured soil property or characteristic which relates the H2S removal capacity of different soils.