(DE19604754-A1)       The process for purifying soil contaminated with hydrocarbons comprises contacting the soil in a reactor with aerobic microorganisms which break hydrocarbons down in the presence of O2. Air is passed through the reactor at a rate of 2-100 l/h/kg of dry substance and the soil is dried, then when the dry solids content is greater than 65 wt.% the soil is mixed with air in a mixer reactor in such a way that the volatilised hydrocarbon phase is microbiologically broken down under conditions of a low throughput of air and high dry solids content.    USE -   Used, e.g., for cleaning soil contaminated with diesel oil, etc., on the site of filling stations.    ADVANTAGE -    The process is simple to perform, rapid, requires less O2than previous processes, and is relatively cheap to operate.    (FR2730430-A3)       The process for purifying soil contaminated with hydrocarbons comprises contacting the soil in a reactor with aerobic microorganisms which break hydrocarbons down in the presence of O2. Air is passed through the reactor at a rate of 2-100 l/h/kg of dry substance and the soil is dried, then when the dry solids content is greater than 65 wt.% the soil is mixed with air in a mixer reactor in such a way that the volatilised hydrocarbon phase is microbiologically broken down under conditions of a low throughput of air and high dry solids content.    USE -   Used, e.g., for cleaning soil contaminated with diesel oil, etc., on the site of filling stations.    ADVANTAGE -    The process is simple to perform, rapid, requires less O2than previous processes, and is relatively cheap to operate.    (BE1009116-A3)       The process for purifying soil contaminated with hydrocarbons comprises contacting the soil in a reactor with aerobic microorganisms which break hydrocarbons down in the presence of O2. Air is passed through the reactor at a rate of 2-100 l/h/kg of dry substance and the soil is dried, then when the dry solids content is greater than 65 wt.% the soil is mixed with air in a mixer reactor in such a way that the volatilised hydrocarbon phase is microbiologically broken down under conditions of a low throughput of air and high dry solids content.    USE -   Used, e.g., for cleaning soil contaminated with diesel oil, etc., on the site of filling stations.    ADVANTAGE -    The process is simple to perform, rapid, requires less O2than previous processes, and is relatively cheap to operate.