Investigation of Toluene absorption from air based on nano-graphene and nano-graphene oxide adsorbent through a pilot simulator of atmospheric air

Absorption of toluene vapors from atmospheric air through surface absorption of adsorbents based on gas phase extraction was obtained. In experimental study, through pilot simulator, toluene vapors absorption and absorbents efficiency in the dynamic and static system was examined by nano graphene and graphene oxide (NG and GO).The effect of different parameters on toluene absorption by NG and GO such as: absorption capacity, temperature desorption, contact time and repeatability, the amount of sorbents and recovery adsorption were investigated. According to discovered findings, capacity and efficiency of absorption by absorbents depend to kind of absorbent, mass of absorbent, toluene density, temperature, air flow rate and contact time. The toluene concentration in air was determined by gas chromatography spectrometer with flame ionization detector (GC-FID). The mean of absorption recovery (AR) and the absorption capacity (AC) for nano graphene absorbent was higher than graphene oxide, respectively (ARNG: 97.3% > ARGO: 23.5%; ACNG: 285.2 mg/g > ACNGO: 67.3 mg/g)