Changes in peat composition after heat treatment

N. V. Chukhareva, M. P. Sartakov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The article examines the peat samples found in Tomsk Oblast. The peat samples were divided into two groups. The first group includes the samples of terrestrial, transition, and fen peat. The peat samples of the second group were thermally treated in order to alter their composition and properties. All peat samples were investigated by elemental, functional, and group analysis. The obtained data reveal the changes in such characteristics of samples as type and decomposition degree. According to the comparative analysis of composition and properties of peat samples, it was revealed that preliminary heating of peat in its decomposition gases increases the content of carbon and decreases the content of oxygen and hydrogen in the organic part of the initial matter. As a result, it alters the intensity of stretching bands of oxygen-containing and CH-functional groups. This fact indicates the growth in chemical and biological activity of thermally treated peat samples and their constituents when used in medicine and agriculture. It is revealed that low-temperature treatment of peat samples contributes to increasing the yield of certain peat group components. It is shown that peat treatment is accompanied not only by decomposition, but also it is a unique environment for the reaction between decomposing gases and peat-forming elements, which results in alteration of peat composition. There is high possibility of simultaneous reactions of decomposition and synthesis of new group elements at different speed. These data were applied in estimating the impact of peat heat treatment on its composition alteration. The most intensive changes in group composition are registered in the samples of poorly-decomposed terrestrial peat of a moss group. The conducted research could be a basis for peat enrichment with valuable constituents – humic acids and bitumen.

Original languageEnglish
Title of host publicationEducation and Accreditation in Geosciences; Environmental Legislation, Multilateral Relations and Funding Opportunities
PublisherInternational Multidisciplinary Scientific Geoconference
Pages79-88
Number of pages10
Edition3.2
ISBN (Electronic)9786197408768, 9786197408775, 9786197408782, 9786197408799, 9786197408805, 9786197408812, 9786197408829, 9786197408836, 9786197408843, 9786197408850, 9786197408867, 9786197408874, 9786197408881, 9786197408898
DOIs
Publication statusPublished - 2019
Event19th International Multidisciplinary Scientific Geoconference, SGEM 2019 - Albena, Bulgaria
Duration: 30 Jun 20196 Jul 2019

Publication series

NameInternational Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
Number3.2
Volume19
ISSN (Print)1314-2704

Conference

Conference19th International Multidisciplinary Scientific Geoconference, SGEM 2019
CountryBulgaria
CityAlbena
Period30.6.196.7.19

Keywords

  • Degree of heating impact
  • Elemental composition
  • Group chemical composition of peat
  • Heat treatment
  • Peat
  • Spectrum characteristics
  • оptical properties

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geology

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