| 摘要 |
The present invention is concerned a process for the regeneration of the spent silica gel used in chromatography and for any other kind of silica. The process comprises 5 main steps, namely:washing with an extractant of organic compounds and removing volatile organic materials remaining thereafter;oxidation to oxidize organic compounds remaining and, preferably, bleach the material;washing with an acid to remove soluble inorganic matter;heating to dry the material and combust any remaining organic compounds present; andrecovering the regenerated material.Various optional steps can be added to the process. |
