Integrated process for disposal of organic matrices

A process for decontaminating a contaminated organic material comprising or consisting of ion-exchange resins embedding toxic and/or radioactive pollutant ions comprising the following steps:a) subjecting said ion-exchange resin to a mineralization process in water by adding an oxidizer in the presence of catalysts based on iron sulphate copper sulphate or mixtures thereof;b) recovering contaminated inorganic compounds;c) preparing a stable matrix for the confinement and embedding of contaminated inorganic materials recovered in stage b)characterized in thatstage b) comprises the following stages:b1) adding the aqueous mixture from stage a) with an aqueous solution of an alkali metal hydroxide until a pH value of or above 9 preferably of between 9 and 11 still more preferably of 10 is reached for facilitating a precipitation and/or co-precipitation of said inorganic mineral compounds containing said toxic and/or radioactive metal ions;b2) adding the suspension obtained in stage b1) with zeolites in order to embed the residual ions of several toxic and/or radioactive metals more preferably those of cesium the compounds thereof being soluble at the alkaline pH of the solution; and said stage b2) being performed under vigorous and constant mixing subsequently to stage b1);b3) separating the solid residue from the reaction mixture from stage b2) by filtration or subsequent decanting of the suspension and subsequent centrifugation of the decanted mixture.