Effects of Salinity on the Macroscopic and Microscopic Evolution Characteristics of Methane Hydrate Films on Bubble Surfaces
文献类型：期刊论文
| 作者 | Zhou, Zhenwu1,2,3,5; Feng, Jingchun1,2,3,5; Xie, Yan1,2,3,5; Wang, Bin1,2,3,5; Wang, Yi4; Zhang, Si1,2,3,5; Yang, Zhifeng1,2,3,5 |
| 刊名 | ENERGY & FUELS
 |
| 出版日期 | 2024-06-11 |
| 卷号 | 38期号:12页码:10945-10954 |
| ISSN号 | 0887-0624 |
| DOI | 10.1021/acs.energyfuels.4c01958 |
| 通讯作者 | Feng, Jingchun(fengjc@gdut.edu.cn) |
| 英文摘要 | The formation and evolution characteristics of hydrate films on methane bubble surfaces play a crucial role in influencing the solidification and resequestration of methane in deep-sea methane seepage environments, which is pivotal in affecting whether methane from seabed seepage can reach the shallow layers of the ocean. Differences in seawater and pore water salinity among different marine regions are the key factors influencing hydrate formation. However, the effects and mechanisms of salinity on macroscopic and microscopic evolution characteristics of methane hydrate films on bubble surfaces remain unclear. In this study, the formation and evolution characteristics of the hydrate film on the surface of methane bubbles were investigated at the macroscopic and molecular scales using a combination of Raman spectroscopy and microscopy. It was found that although the driving force for methane hydrate formation was consistent in all systems, the lateral growth rate of the hydrate film on the bubble surface slowed with increasing salinity, and the initial hydrate film gradually became rougher with enlarged hydrate particles. The lateral growth rate of the methane hydrate film in the 10 wt % salinity system was 50 times slower than that in the pure water system. Additionally, the salinity significantly affected the thickening process of the methane hydrate films. The obvious difference in pressure inside and outside the bubbles under different salinity conditions resulted in overall gas consumption phenomena in the system different from those of hydrate formation on the bubble surface. Mechanism analysis suggests that the observed phenomena primarily stem from the decrease in efficiency of methane and water molecule transfer caused by increased salinity as well as the formation of a porous and loose hydrate film structure. The results of this work can provide valuable insights into CH4 capture and sequestration in deep-sea cold seeps and offer essential fundamentals for estimating hydrate resources in the marine environment. |
| WOS关键词 | GAS HYDRATE ; PHASE-EQUILIBRIUM ; DISSOCIATION ; DECOMPOSITION ; BEHAVIORS ; SEDIMENTS ; KINETICS ; NACL |
| 资助项目 | National Natural Science Foundation of China[42325603] ; National Natural Science Foundation of China[42227803] ; National Natural Science Foundation of China[42376215] ; National Natural Science Foundation of China[42206223] ; National Natural Science Foundation of China[2021YFF0502300] ; National Key Research and Development Program of China[[2023]30] ; Guangdong Natural Resources Foundation[GML20190609] ; Guangdong Natural Resources Foundation[GML2022009] ; Guangdong Natural Resources Foundation[GML20230921] ; PI project of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[2023A1515010612] ; Guangdong Basic and Applied Basic Research Foundation |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001246461500001 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; Guangdong Natural Resources Foundation ; PI project of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) ; Guangdong Basic and Applied Basic Research Foundation |
| 源URL | [http://ir.giec.ac.cn/handle/344007/42115]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Feng, Jingchun |
| 作者单位 | 1.Res Ctr Ecol & Environm Coastal Area & Deep Sea, Southern Marine Sci & Engn Guangdong Lab Guangzhou, Guangzhou 511458, Peoples R China 2.Guangdong Univ Technol, Sch Ecol Environm & Resources, Guangzhou 510006, Peoples R China 3.Southern Marine Sci & Engn Guangdong Lab Guangzhou, Guangzhou 511458, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 5.Guangdong Univ Technol, Guangdong Basic Res Ctr Excellence Ecol Secur & Gr, Guangzhou 510006, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Zhenwu,Feng, Jingchun,Xie, Yan,et al. Effects of Salinity on the Macroscopic and Microscopic Evolution Characteristics of Methane Hydrate Films on Bubble Surfaces[J]. ENERGY & FUELS,2024,38(12):10945-10954. |
| APA | Zhou, Zhenwu.,Feng, Jingchun.,Xie, Yan.,Wang, Bin.,Wang, Yi.,...&Yang, Zhifeng.(2024).Effects of Salinity on the Macroscopic and Microscopic Evolution Characteristics of Methane Hydrate Films on Bubble Surfaces.ENERGY & FUELS,38(12),10945-10954. |
| MLA | Zhou, Zhenwu,et al."Effects of Salinity on the Macroscopic and Microscopic Evolution Characteristics of Methane Hydrate Films on Bubble Surfaces".ENERGY & FUELS 38.12(2024):10945-10954. |
入库方式： OAI收割
来源：广州能源研究所
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