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E u r o S c i C o n C o n f e r e n c e o n
Chemistry
2018
Chemistry 2018
Journal of Organic & Inorganic Chemistry
ISSN 2472-1123
F e b r u a r y 1 9 - 2 0 , 2 0 1 8
P a r i s , F r a n c e
Page 56
T
he presence of hydrocarbons can give rise to such phenomena as rock
gas outbursts or methane explosions while the coalbed is being mined.
The mechanisms of their interactions with the coal bulk have not been fully
explained yet. The coal surface contains numerous functional groups, such as
oxygen groups, which act as regulators of hydrophilic properties of the coal
surface. It is a well-established view that hard coal behaves as a dual system,
exhibiting both hydrophobic and hydrophilic properties. This dual nature of
the coal surface is of particular importance when investigating the sorption
of vapors of apolar and polar substances. Sorbates used in the experiments
included aliphatic hydrocarbons as sorbates: ethane, ethene and acetylene.
Testing was done on a hard coal sample from a Polish colliery. The presence
of a dual bond in the hydrocarbon molecule affects the isotherm pattern and
leads to the higher sorption values. The favored sorption of polar hydrocarbons
may be associated with the interactions of the dual bond with functional polar
groups on the coal surface. Since the saturated and non-saturated hydrocarbon
molecule dimensions are very similar, the differences in sorption capacity are
probably the result of associations of non-saturated hydrocarbon molecules
on the surface of micropores. It is reasonable to suppose that in the case of
non-saturated hydrocarbons, adsorbate-adsorbate interactions play a more
significant role than adsorbate-adsorbent processes. Results of conducted
tests offer us a better insight into the factors controlling the processes of gas
sorption and gas release in the hard coal-vapor/gas systems, hence they can
be well utilized in prognosticating the gas release to mine workings during
the mining operations, rock bursts, rock and gas outbursts and particularly
during the self-heating of coal. The obtained experimental isotherms would be
fitted by the theoretical models for prediction the sorption processes in other
conditions.
Biography
Natalia Czuma is PhD student at AGH University of Science and
Technology in Kraków, Poland. In her PhD she focused on the
topic of fly ash synthesis and its sorption properties in relation
to CO
2
and SO
2
. Additionally, her scientific interest focuses on
other fly ash uses such as carbonation processes and geopoly-
mer synthesis. She is a member of InnoEnergy PhD School.
She has participated in national and international internships
including cooperation with EDF Poland SA, Lublin University of
Technology, UPC Universitat Polytecnica de Catalunya and Uni-
versité Pierre et Marie Curie.
nczuma@agh.edu.plModelling of saturated and unsaturated hydrocarbons sorption
on coal
Natalia Czuma
1
, Dudzińska Agnieszka
3
, Sylwester Fur-
maniak
2
, Katarzyna Zarębska
1
and Paweł Baran
1
1
AGH University of Science and Technology, Poland
2
Stanisław Staszic University of Applied Sciences, Poland
3
Central Mining Institute, Poland
Natalia Czuma, J Org Inorg Chem 2018, Volume: 4
DOI: 10.21767/2472-1123-C1-003