Effect of Fulvic Acid and Sodium Chloride on the Phase Equilibrium of Methane Hydrate in Mixed Sand-Clay Sediment
The phase equilibrium conditions for methane hydrate in mixed sand-clay sediment with the presence of fulvic acid (FA) and sodium chloride (NaCl) were measured using the multistep heating method. The experiments were conducted at the temperatures from 281.45 to 290.65 K and pressures from 6.33 to 17...
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AMER CHEMICAL SOC
2019
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Online Access: | http://ir.giec.ac.cn/handle/344007/24539 http://ir.giec.ac.cn/handle/344007/24540 https://doi.org/10.1021/acs.jced.8b00884 |
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ftchacadsciegiec:oai:ir.giec.ac.cn:344007/24540 2023-05-15T17:11:10+02:00 Effect of Fulvic Acid and Sodium Chloride on the Phase Equilibrium of Methane Hydrate in Mixed Sand-Clay Sediment Lv, Tao Li, Xiaosen Chen, Zhaoyang Xu, Chungang Zhang, Yu Cai, Jing 2019-02-01 http://ir.giec.ac.cn/handle/344007/24539 http://ir.giec.ac.cn/handle/344007/24540 https://doi.org/10.1021/acs.jced.8b00884 英语 eng AMER CHEMICAL SOC JOURNAL OF CHEMICAL AND ENGINEERING DATA http://ir.giec.ac.cn/handle/344007/24539 http://ir.giec.ac.cn/handle/344007/24540 doi:10.1021/acs.jced.8b00884 MOLECULAR-DYNAMICS SIMULATION THERMAL-STIMULATION POROUS-MEDIA DISSOCIATION CONDITIONS CARBON-DIOXIDE PORE-SIZE GAS CO2 TEMPERATURES PRESSURES Thermodynamics Chemistry Engineering Multidisciplinary Chemical 期刊论文 2019 ftchacadsciegiec https://doi.org/10.1021/acs.jced.8b00884 2022-09-23T14:15:08Z The phase equilibrium conditions for methane hydrate in mixed sand-clay sediment with the presence of fulvic acid (FA) and sodium chloride (NaCl) were measured using the multistep heating method. The experiments were conducted at the temperatures from 281.45 to 290.65 K and pressures from 6.33 to 17.39 MPa, respectively. The mixed sand-clay porous media and aqueous solutions containing 2.0, 6.0, and 10.0 wt % FA and 3.0 wt % NaCl were used. The experimental results indicate that the phase equilibrium curve of methane hydrate in mixed porous media shifts to the left side as compared to that in bulk solutions because of the capillary force and hydrophilic surfaces of porous media. FA is a thermodynamic inhibitor for methane hydrate formation as the -COO- and short alkyl substituent of FA could compete with hydrate for water molecules, and the inhibition effect of FA on methane hydrate formation is weaker as compared to 3.0 wt % NaCl under all studied concentration conditions. The phase equilibrium pressures of methane hydrate in mixed porous media with the presence of 2.0 wt % FA + 3.0 wt % NaCl,6.0 wt % FA + 3.0 wt % NaCl, 10.0 wt % FA + 3.0 wt % NaCl are all higher than that with only 3.0 wt % NaCl present, and the pressure increases with the increase in FA concentration. The existence of FA solutions and FA + NaCl solutions in mixed porous media does not affect the methane hydrate structure. Report Methane hydrate Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR Journal of Chemical & Engineering Data 64 2 632 639 |
institution |
Open Polar |
collection |
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR |
op_collection_id |
ftchacadsciegiec |
language |
English |
topic |
MOLECULAR-DYNAMICS SIMULATION THERMAL-STIMULATION POROUS-MEDIA DISSOCIATION CONDITIONS CARBON-DIOXIDE PORE-SIZE GAS CO2 TEMPERATURES PRESSURES Thermodynamics Chemistry Engineering Multidisciplinary Chemical |
spellingShingle |
MOLECULAR-DYNAMICS SIMULATION THERMAL-STIMULATION POROUS-MEDIA DISSOCIATION CONDITIONS CARBON-DIOXIDE PORE-SIZE GAS CO2 TEMPERATURES PRESSURES Thermodynamics Chemistry Engineering Multidisciplinary Chemical Lv, Tao Li, Xiaosen Chen, Zhaoyang Xu, Chungang Zhang, Yu Cai, Jing Effect of Fulvic Acid and Sodium Chloride on the Phase Equilibrium of Methane Hydrate in Mixed Sand-Clay Sediment |
topic_facet |
MOLECULAR-DYNAMICS SIMULATION THERMAL-STIMULATION POROUS-MEDIA DISSOCIATION CONDITIONS CARBON-DIOXIDE PORE-SIZE GAS CO2 TEMPERATURES PRESSURES Thermodynamics Chemistry Engineering Multidisciplinary Chemical |
description |
The phase equilibrium conditions for methane hydrate in mixed sand-clay sediment with the presence of fulvic acid (FA) and sodium chloride (NaCl) were measured using the multistep heating method. The experiments were conducted at the temperatures from 281.45 to 290.65 K and pressures from 6.33 to 17.39 MPa, respectively. The mixed sand-clay porous media and aqueous solutions containing 2.0, 6.0, and 10.0 wt % FA and 3.0 wt % NaCl were used. The experimental results indicate that the phase equilibrium curve of methane hydrate in mixed porous media shifts to the left side as compared to that in bulk solutions because of the capillary force and hydrophilic surfaces of porous media. FA is a thermodynamic inhibitor for methane hydrate formation as the -COO- and short alkyl substituent of FA could compete with hydrate for water molecules, and the inhibition effect of FA on methane hydrate formation is weaker as compared to 3.0 wt % NaCl under all studied concentration conditions. The phase equilibrium pressures of methane hydrate in mixed porous media with the presence of 2.0 wt % FA + 3.0 wt % NaCl,6.0 wt % FA + 3.0 wt % NaCl, 10.0 wt % FA + 3.0 wt % NaCl are all higher than that with only 3.0 wt % NaCl present, and the pressure increases with the increase in FA concentration. The existence of FA solutions and FA + NaCl solutions in mixed porous media does not affect the methane hydrate structure. |
format |
Report |
author |
Lv, Tao Li, Xiaosen Chen, Zhaoyang Xu, Chungang Zhang, Yu Cai, Jing |
author_facet |
Lv, Tao Li, Xiaosen Chen, Zhaoyang Xu, Chungang Zhang, Yu Cai, Jing |
author_sort |
Lv, Tao |
title |
Effect of Fulvic Acid and Sodium Chloride on the Phase Equilibrium of Methane Hydrate in Mixed Sand-Clay Sediment |
title_short |
Effect of Fulvic Acid and Sodium Chloride on the Phase Equilibrium of Methane Hydrate in Mixed Sand-Clay Sediment |
title_full |
Effect of Fulvic Acid and Sodium Chloride on the Phase Equilibrium of Methane Hydrate in Mixed Sand-Clay Sediment |
title_fullStr |
Effect of Fulvic Acid and Sodium Chloride on the Phase Equilibrium of Methane Hydrate in Mixed Sand-Clay Sediment |
title_full_unstemmed |
Effect of Fulvic Acid and Sodium Chloride on the Phase Equilibrium of Methane Hydrate in Mixed Sand-Clay Sediment |
title_sort |
effect of fulvic acid and sodium chloride on the phase equilibrium of methane hydrate in mixed sand-clay sediment |
publisher |
AMER CHEMICAL SOC |
publishDate |
2019 |
url |
http://ir.giec.ac.cn/handle/344007/24539 http://ir.giec.ac.cn/handle/344007/24540 https://doi.org/10.1021/acs.jced.8b00884 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
JOURNAL OF CHEMICAL AND ENGINEERING DATA http://ir.giec.ac.cn/handle/344007/24539 http://ir.giec.ac.cn/handle/344007/24540 doi:10.1021/acs.jced.8b00884 |
op_doi |
https://doi.org/10.1021/acs.jced.8b00884 |
container_title |
Journal of Chemical & Engineering Data |
container_volume |
64 |
container_issue |
2 |
container_start_page |
632 |
op_container_end_page |
639 |
_version_ |
1766067998763778048 |