In order to further understand the effect of the pore structure of activated carbon on the filtration efficiency of cigarette mainstream smoke and the difference of the filtration efficiency between gaseous compounds and granular compounds, the adsorption selectivity of activated carbon on two important harmful components (sputum-based compounds and phenolic compounds) in cigarette mainstream smoke was also investigated. It was found that there was a significant correlation between the filtration efficiency of seven phenolic substances in the mainstream smoke of cigarettes and the filtration efficiency of particulate matter. The filtration efficiency of activated carbon for several monophenols was significantly higher than that of bisphenol, in which o-cresol had the highest filtration efficiency, followed by phenol. Activated carbon has a better adsorption effect on sputum-based compounds in the mainstream smoke of cigarettes. The larger the specific surface area of activated carbon is, the higher the filtration efficiency is. When the specific surface area is similar, the smaller pore size of activated carbon has a higher filtration efficiency. The activated carbon has the highest filtering efficiency for crotonaldehyde and the lowest filtering efficiency for acetaldehyde. The filtration efficiency of activated carbon for gas phase composition was significantly higher than that for granular phase composition. When the addition amount of activated carbon for six different pore structures was 23 mg/ branch, the total granular phase could be reduced by 3.75%-12.49%. The total phenolic compounds could be reduced by 2.92% ~ 13.68%. The total amount of sputum-based compounds could be reduced by 9.51% ~ 35.05%.Combined Equations (5) and (10) can calculate the total amount of Pb and 21Bi atoms in activated carbon after adsorption for any length of time (i.e., the total number of activated carbon Y).Let n=0 in Equation (10), then the accumulation and attenuation of total atomic amount of 2Pb and 2Bi (total number of activated carbon Y) after the removal of activated carbon can be calculated in Equation (10).In fact, if thin layer activated carbon is used, the value of N should be equal to the product of the adsorption coefficient of activated carbon and radon concentration, while the radon adsorption coefficient of activated carbon mainly depends on the type of activated carbon and is affected by temperature, humidity and other factors.activated carbon manufacturer in Germany
When the radon adsorption coefficient of activated carbon is constant,n is proportional to the concentration of radon. In this case, Equation (10) represents the functional relationship among the total number of activated carbon V, radon concentration and adsorption (or exposure) time. Therefore, the concentration of radon in the environment can be calculated according to the total number of activated carbon and adsorption time.Simulation calculation and result analysis of total number of activated carbon According to Equations (5) and (10), a computer program can be written to calculate the relationship between the total number of Y in the process of radon adsorption on activated carbon and the relationship between the total number of Y after the removal of activated carbon and the change of time.Can be used for exhaust treatment, air purification, solvent recovery, gas separation, deodorization, desulfurization and denitration, industry.Raw material gas refining, gas chromatography filler, air sampler, fresh-keeping, ozone removal, cigarette filter nozzle, gas adsorption storage, military and civil gas masks, etc.(2) liquid phase adsorption of activated carbon.Tap water treatment, pure water manufacturing, industrial and domestic sewage advanced treatment, decolorization refining, blood purification, gold recovery, double capacitor electrode, pharmaceutical carbon, etc.(3) catalyst (catalyst) with activated carbon.wholesale activated carbon pellets