Investigation of physicochemical properties and structural characteristics of pyrolysis product of wood waste
Abstract
In this paper, the object of investigation is a solid product of pyrolysis of wood waste. The structural characteristics and physical-chemical properties of the solid pyrolysis product obtained in the production conditions, characterizing the sorption properties with respect to pollutants contained in aqueous media - the specific area, surface structure, pore size and size distribution are characterized.
The specific surface, volume and radius of the pores were determined by capillary condensation of nitrogen. The specific surface area of the pyrolysis product of wood waste is 310.5 m2/ g. The volume and radius of the pores determined by the t-method and the BJH method are 0.229 cc/g and 19.3 A, respectively. The elemental composition and surface structure of the pyrolysis product were studied by scanning electron and x-ray microscopy. The obtained data indicate the presence of sorption properties.
According to the definition of the dispersed composition, the pyrolysis product of wood waste mainly contains particles of sizes from 0.1 to 3 mm (86.6%). The specific value of the bulk density of the pyrolysis product is not inferior to that of known adsorbents. And they are 295 g/dm3. The moisture content of wood waste after treatment with pyrolysis does not exceed the normative value and accounts for 2.7%.
It is established that utilization of wood waste by low-temperature pyrolysis makes it possible to obtain a sorption material.
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