Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Phase equilibrium characteristics of natural gas hydrate formation at the deep-water environment of "Haima" cold seep | |
| Huang, Yanyan1,2; Feng, Jing-Chun1,2; Xie, Yan1,2; Wang, Yi3; Li, Pian1,2; Zhang, Mingrui1,2 | |
| 2022-11-01 | |
| Source Publication | ENERGY REPORTS
 |
| ISSN | 2352-4847 |
| Volume | 8Pages:5501-5509 |
| Corresponding Author | Feng, Jing-Chun(fengjc@gdut.edu.cn) |
| Abstract | Methane seeping induced by natural gas hydrate dissociation is ubiquitous in deep-sea environment, which influences the global methane and carbon budget. Nevertheless, the phase equilibrium char-acteristics that control the stability of hydrate formation during the bubble ebullition process in the in-situ multi-component environment remain unclear. "Haima"cold seep is a typical active methane seeping environment associated with abundant methane hydrate, which necessitates unveiling the potential and stability of methane hydrate formation. This work investigated the hydrate phase equi-librium conditions based on the in-situ water depth with practical ion categories and concentrations for the first time. Results show that Sr2+ is an important ion that governs the thermal stability of methane hydrate. Mechanism of different ions categories (Ca2+, Mg2+, and Sr2+) effect on hydrate equilibria can be elucidated by the difference of charge and radius of the ion. Slightly difference of in-situ ion concentrations within the same salinity exerts on unobvious effect on hydrate formation. Moreover, the hydrate stability with H2S-bearing environment coupled with the anaerobic oxidation of methane in the deep-sea floor was enhanced compared to the CO2-bearing environment associated with aerobic oxidation of methane. Furthermore, thermal dynamic conditions of hydrate formation were less rigorous than that in the single methane environment. The response law of hydrate phase transition enthalpy was almost consistent with the phase equilibrium change. This work can give important fundamentals for the estimation of hydrate resources in the practical environment, and have insights for methane capture and fixation in the methane seeps. (C) 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| Keyword | Natural gas hydrate Phase equilibrium condition Cold seep Ion category Ion concentration Anaerobic/Aerobic of methane oxidation |
| DOI | 10.1016/j.egyr.2022.04.011 |
| WOS Keyword | METHANE HYDRATE ; DISSOCIATION ENTHALPY ; SEA-FLOOR ; TEMPERATURE ; STABILITY ; SEDIMENTS ; PRESSURE ; VENT ; AREA |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foun-dation of China[42022046] ; National Natural Science Foun-dation of China[52122602] ; National Key Research and Development Program of China[2021YFF0502300] ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0401] ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0403] ; Guangzhou Sci-ence and Technology Project[202102020971] |
| WOS Research Area | Energy & Fuels |
| Funding Organization | National Natural Science Foun-dation of China ; National Key Research and Development Program of China ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) ; Guangzhou Sci-ence and Technology Project |
| WOS Subject | Energy & Fuels |
| WOS ID | WOS:000832955600002 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/37061 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Feng, Jing-Chun |
| Affiliation | 1.Guangdong Univ Technol, Res Ctr Ecol & Environm Coastal Area & Deep Sea, Guangzhou 510006, Peoples R China 2.Guangdong Lab Guangzhou, Southern Marine Sci & Engn, Guangzhou 511458, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China |
| Recommended Citation GB/T 7714 | Huang, Yanyan,Feng, Jing-Chun,Xie, Yan,et al. Phase equilibrium characteristics of natural gas hydrate formation at the deep-water environment of "Haima" cold seep[J]. ENERGY REPORTS,2022,8:5501-5509. |
| APA | Huang, Yanyan,Feng, Jing-Chun,Xie, Yan,Wang, Yi,Li, Pian,&Zhang, Mingrui.(2022).Phase equilibrium characteristics of natural gas hydrate formation at the deep-water environment of "Haima" cold seep.ENERGY REPORTS,8,5501-5509. |
| MLA | Huang, Yanyan,et al."Phase equilibrium characteristics of natural gas hydrate formation at the deep-water environment of "Haima" cold seep".ENERGY REPORTS 8(2022):5501-5509. |
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