Physico-chemical nanomaterials science

Study of biocarbons derived from residue after supercritical extraction of carrot seeds from adsorption of gaseous NO2
Bazan-Wozniak A., Pietrzak R.
Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland.
E-mail: pietrob@amu.edu.pl

Human health is closely related to his environment. Air polluted is considered one of the major factors leading to many diseases such as cardiovascular and respiratory disease and lung cancer for the people. Besides, air pollution adversely affects the animals and deteriorates the plant environment. The sources of pollution vary from small unit of cigarettes and natural sources such as volcanic activities to large volume of emission from motor engines of automobiles and industrial activities [1]. That is why the search for new and more effective technologies for the environment purification is a continuous challenge. Recently, increasingly often carbon materials are used as effective adsorbents of pollutants from gas phases [2]. Porous materials have shown an enormous potential in a wide variety of applications due to their high specific surface area and porosity. Activated carbons are efficient adsorbents for gases and vapors [3].
The main aim of the study reported was to obtain cheap and effective biocarbons from the residue after supercritical extraction of carrot seeds and their comprehensive characterization by determination of textural parameters, content of surface oxygen functional groups and pH of their water extracts. The biocarbons were tested as potential adsorbents for the removal of gas pollutants represented by nitrogen dioxide. The effects of the methods of activation and variant of heating (microwave and conventional) on the physicochemical and sorption properties of the biocarbons were also examined.

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