Open AccessMarcellus shale characteristics and CO2 adsorption: equilibrium and kinetic modeling study
Author(s) -
Firas A. Abdulkareem,
Gauthier Faugere,
Amatalrhman Radman,
Sayed Ameenuddin Irfan,
Srimanimegala Sathiavelu,
Eswaran Padmanabhan
Publication year - 2022
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/1003/1/012027
Subject(s) - adsorption , oil shale , langmuir , desorption , freundlich equation , illite , kaolinite , mesoporous material , gravimetric analysis , clay minerals , chemistry , mineralogy , chemical engineering , porosity , materials science , geology , organic chemistry , paleontology , engineering , catalysis
The CO 2 injection in unconventional reservoirs is one of the promising techniques for improved hydrocarbons recovery (IOR) and eliminated greenhouse gas emissions. In this work, the Physico-chemical characteristics of shale rocks, and the influence of those characteristics on CO 2 adsorption and desorption are investigated. The mineralogy of four Marcellus shale samples, in addition to the morphology, elemental distribution, functional groups, total organic content, and porosity are indicated and discussed. The adsorption measurements utilizing gravimetric approach show up to 35mg/g and presented obvious correlation of clay minerals existence such as Dolomite, Illite, and Kaolinite at different weight ratios i.e. up to 60wt.% with CO 2 adsorption and retention. Open-ended Pore shapes and mesoporous zone are illustrated on the mesoporous shale geometries. The applied numerical equilibrium isotherms modelling, which are Langmuir, Freundlich, Toth, and Tempkin models, are reflected multilayer and heterogeneous gas molecules distribution following the monolayer and homogeneous adsorption. The kinetic measurements showed a rate of adsorption variation, which reflected the total organic content and porosity variations impacts. The temperature program desorption of the pre-adsorbed CO 2 gas revealed strong chemisorption on shale matrix, which requested up to 500°C and 2675.538KJ/mol to break down the CO 2 bonding from shale geometry. The findings supported the CO 2 utilization as water competitor and shale matrix as a storage environment for further utilization or environmental assortments. Keywords: CO 2 adsorption/desorption, Marcellus Shales, Kinetics, Hydraulic fracturing, Enhanced Gas Recovery (EGR).