Влияние условий получения углеродных сорбентов из коры пихты на их структуру и сорбционные свойства

The ability of producing of effective carbon sorbents from abies bark with the use of thermal alkaline activation in presence of potassium hydroxide was shown. The effects of ratio of bark to alkalin, and temperature of bark pre-carbonization on the porous structure and sorption properties of the carbon sorbents were studied. It was shown , that the capacity of carbon sorbents on iodine is defined by pores with a width 0,73 – 1,86 nm, on methylene blue - 0,86 – 2,95 nm, and on vitamin B 12 - ≥ 9,31 nm. It was determined, that the carbon sorbent, producing by alkaline activation of product of abies bark carbonization at 400 о С , has a high sorption capacity for studied marker substances. For this sorbent kinetic of iodine, methylene blue and vitamin B 12 sorption was studied in comparison with the simple of commercial active coal for medical purposes. It was determined, that this sorbent exceeds the commercial sample in sorption of iodine and vitamin B 12 in 1,5 time, and at sorption of methylene blue – in 1.7 time, and it is characterized by a higher rate constants of their markers sorption.