Effect of activated carbon structures properties on adsorption efficiency of cigarette smoke carbonyls

The adsorption efficiency of carbonyls of different structure properties activated carbons were tested,the influence of carbon structure and compounds properties on the adsorption efficiency was discussed.The results showed that: 1)Surface area and micropore volume were the main factors influencing the adsorption efficiency.With the fixed carbon weights,adsorption efficiency increased with the increasing surface area and micropore volume.2)Adsorption efficiency was affected by carbon pore distributions.In the gas adsorption,micropores are contributed to the adsorption straightly,while mesopores and macropores acted as transport pores,providing routes into the adsorbing material;adsorption efficiency could be maximized by a combination of micropores and meso/macropores.3)As long as the filter pressure drop wasn't too high and considering the processing feasibility,carbon particle size could be small enough.4)Adsorption efficiency had something to do with compounds characteristics,especially with compounds' molecular weight and boiling point.When transportation wasn't limited,compounds with higher boiling points had the higher adsorption efficiency.