Capture of Toluene Vapors Using Adsorption and Microwave Irradiation Regeneration

Experimental investigations using granular activated carbon (GAC) adsorption and then desorpted with microwave irradiation for toluene abatement are reported in this paper. The results indicated that the adsorption capacity of GAC for toluene was 198 mg (toluene) / g (GAC) at 303 K. Isotherm analysis of adsorption data obtained at 303 K showed that the adsorption pattern of toluene on GAC followed the Langmuir isotherm. The Langmuir constants Q0 and b were found to be 208.33 mg/g and 0.0023 m3/mg, respectively. At 313 K, the saturated GAC could achieve more than 90% regeneration efficiency in 40 minutes. In this investigation, the reasonable regeneration temperature and superficial gas velocity were 313 K and 0.073 m/s, respectively.