Authors: KozlovA.P., ZykovI.Yu., DudnikovaYu.N., TsvetkovV.E., FedorovaN.I., IsmagilovZ.R.

Title of the article: PROCESSING OF BROWN COALS INTO EFFECTIVE SORBENTS FOR SOLVING PROBLEMS OF ENVIRONMENTAL PROTECTION AND IMPROVING THE QUALITY OF LIFE

Year: 2018, Issue: 3, Pages: 93-100

Branch of knowledge: Chemical technology

Index UDK: 547.992.2:662.73

DOI: 10.26730/1999-4125-2018-3-93-100

Abstract: The paper shows the possibility for processing brown coals of Kuzbass into effective carbon sorbents by the example of brown coal of the Tisulskoye field. The alkaline activation of brown coals provides an opportunity to obtain carbon sorbents with high porosity characteristics. Homogenization of the coal-alkaline mixture was carried out by impregnation with an alkaline solution with subsequent drying. The KOH/coal mass ratios were 0.25g/g; 0.5g/g; 1g/g; 2g/g. The positive effect of potassium hydroxide on characteristics of sorbents obtained with alkaline activation is shown. The sorption of iodine, phenol and methylene blue increases with an increase in the KOH/coal ratio due to the development of the sorbent porous structure. The porosity characteristics of carbon sorbents are investigated with the ASAP-2020 analyzer and JEOL JSM – 6390 LV electron microscope. The porous structure of sorbents obtained from the brown coal of the Tisulsky field by the alkaline activation method is mainly re-presented by micropores. The highest increase in the porous structure is observed when KOH/coal mass ratio 0.5 g/g was used.

Key words: carbon sorbents brown coal alkaline activation porous structure adsorption

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