Introduction The development of many branches of industry and the use of modern technologies that are accompanied by tougher and tougher requirements for environmental protection justify the ceaseless search for possibly cheap and most effective adsorption materials. From among many products used for this purpose the most promising are carbonaceous adsorbents, because of low cost of production and abundant resources as well as specific beneficial properties, such as: high mechanical, chemical resistance and ease of degradation of the used material. Precursors for the manufacture of carbonaceous adsorbents can be different materials, for instance lignin, cellulose, peat and coals [1-2]. The reasons for use of coals as precursor material is the high content of carbon and their primary porous structure, which permit get materials characterised by well-developed porous structure. The pore structure present in natural coals is poorly developed and can not be accessible to many adsorbates. Therefore coals must be subjected to carbonisation and/or activation which can be realized by physical method or by chemical method [3-4]. Economy and the measures aimed at the environment protection instigate the search for new precursors and new technologies for production of carbonaceous sorbents. For these reasons recently certain waste products have been used as precursors, for example waste tyres, polymers, resins, sawdust as well as agricultural byproducts such as: stones, shells and corncobs [5-6]. The use of these raw products permits obtaining adsorbents of new physicochemical properties and convert these waste materials to valuable products. The aim of the study was to obtain carbonaceous adsorbents from cardboard and to check the effect of the temperature of pyrolysis on their sorption performance towards NO2.