Preparation of highly effective carbon adsorbents based on high-moor peat from the European North of Russia

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Abstract

The study of active coals obtained from high-moor peat of the European North of Russia was conducted by method of thermochemical activation with NaOH with various types of pre-treatment (debituminization and pre-hydrolysis). Based on the results of the low-temperature adsorption of nitrogen, the derived active coals belong to the adsorbents in which the structure of the micro-agents predominates. The specific surface of the coal pores reaches 2330 m2/g, the total volume of pores – 1.44 cm3/g. It has been determined that the introduction of the pre-hydrolysis stage makes it possible to increase significantly the yield of active coals. For initial peat samples, the growth is 28%; for debituminized – 97%, moreover it significantly improve its sorption characteristics. It has been shown that weakly decomposed peat of the European North of Russia can be used as raw material for producing high-efficiency carbon microporous adsorbents.

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About the authors

I. N. Zubov

Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences

Author for correspondence.
Email: zubov.ivan@fciarctic.ru
Russian Federation, Arkhangelsk, 163002

Y. A. Savrasova

Northern (Arctic) Lomonosov Federal University

Email: yulia925@mail.ru
Russian Federation, Arkhangelsk, 163002

N. I. Bogdanovich

Northern (Arctic) Lomonosov Federal University

Email: n.bogdanovich@narfu.ru
Russian Federation, Arkhangelsk, 163002

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2. Fig. 1. Scheme of coal washing from co-products.

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3. Fig. 2. Nitrogen adsorption–desorption isotherms.

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4. Fig. 3. Diagram of the pore size distribution.

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