Pollutants that are present in closed spaces are increasingly becoming a problem for people’s
health. One of the most present pollutants in developed urban and industrial areas is benzene. This
paper shows the adsorption characteristics of ZSM zeolites (ZeoFlair 100 and ZeoFlair 110),
silica gel (silica gel 60/0-40μm) and 50:50 silica gel and ZEOflair 100 compound (ZEOflair 100
+ silica gel 60/0-40μm (50:50)). Adsorption isotherms of the benzene on the examined adsorbents
are generated by simulating the adsorption process in the closed room conditions (with
atmosphere pressure, 26°C temperature and 60% chamber humidity at the beginning of
adsorption), using free diffusion mechanism. High coefficients of determination were obtained by
using the nonlinear models (Langmuir and Freundlich). For ZEOflair 110, ZEOflair 100 + silica
gel 60 /0-40 μm samples and silica gel 60/0-40μm, determination coefficients obtained by using
nonlinear Langmuir model (0,9495; 0,9711 and 0,9829 respectively) were bigger than those
obtained by using Freundlich nonlinear model. Low value of the Langmuir constant (KL) for
examined samples shows high affinity between examined adsorbents and benzene. The maximum
adsorption capacity values Q
0
m, were obtained by experiments and models with silica gel
(248,74mg/g), and the lowest for ZEOflair 100 (38,13mg/g).
