Long-Term Stability Research Of Waste Forms Containing Chromium Residue Based On Cement

This article studied waste forms containing chromium residue based on cement and concrete, which was made by optimal direction . It researched different factors effect to the balance leaching and leaching kinetics of Cr(VI) in waste forms based on cement, It is concluded that changing of temperature and pH have more effect to the leaching of Cr(VI). In addition, By 28 days and 90 days dynamic leaching ,It studied long-term leaching behavior of Cr(VI). furthermore , Waste forms based on concrete were researched by carbonization and freeze-thaw, It can be concluded that each index is less than corresponding national standards, It proves waste forms based on concrete have the potential to be construction materials.In the end ,Effect of Thiobacillus thiooxidans to waste forms based on cement , microbial stability was researched , by contrast experiments, It can be found that Thiobacillus thiooxidans accelerates the leaching of Cr(VI) in waste forms based on cement.