Preparation of Carbon-silica aerogel nanocomposite for BTEX removalform waste gas stream

In this study a hydrophobic carbon/silica aerogel with a large surface area was created for benzeneremoval waste gas stream. The characteristic properties of the composite aerogel were examinedusing Brunauer-Emmett-Teller (BET) analysis, Scanning Electron Microscopy (SEM), Barrett-Joyner-Halenda (BJH) method, and energy-dispersive X-Ray (EDX) techniques. The resultsindicated that as the inlet flow rate increased from ۰.۲ l/min to ۰.۵ and ۰.۸ l/min, the breakthroughtime decreased from ۱۳ h to ۷ h and ۳ h, respectively. Furthermore, the adsorption capacity of theaerogel nanocomposite decreased from ۱۲۶.۷۳ mg g−۱ to ۸۴.۵ mg g−۱ and ۳۸ mg g−۱ with an increasein inlet benzene concentration from ۱۰۰ ppmv to ۲۰۰ ppmv and ۳۰۰ ppmv, respectively.

کلیدواژه ها:

Aerogel ، carbon-silica nanocomposite ، BTEX ، adsorption