Enhanced desorption of RDX from granular activated carbon.

摘要: Several methods (cosolvents, surfactants, and cyclodextrins) were compared for improving desorption of a high explosive, RDX, from granular activated carbon (GAC). In batch tests, 3% the adsorbed RDX (initially 71.1 mg RDX/g GAC) was desorbed by water over 11 days, to 92.6% 100% ethanol. Solutions ethanol or methanol in also effectively although somewhat less effective than Sodium dodecyl sulfate as much 70% while non-ionic surfactants Tween 80, Triton X-100, Brij 30 42 51% RDX. continuous flow column GAC partially regenerated. One-half 2100 bed volumes (BV) 10% ethanol, 22 500 BV buffered water. Column modeling indicated that competitive adsorption altered equilibrium conditions combined enhance desorption.