Development of Hydrothermal and Frictional Experimental Systems to Simulate Sub-seafloor Water–Rock–Microbe Interactions

Suzuki, Katsuhiko; Kato, Shingo; Shibuya, Takazo; Hirose, Takehiro; Fuchida, Shigshi; Kumar, Vijay; Yoshizaki, Masanori; Yoshio, Masaki; Nakamura, Kozo; Kobayashi, Kensei; Masuda, Harue; Yamagishi, Akihiko; Urabe, Tetsuro

doi:10.1007/978-4-431-54865-2_7

Cited by 2 publications

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“…In this study, it is considered that hydrate is mainly formed and stored in the pores of the sedimentary layer. 33 We adopted silica and alumina particles with different sizes mixed with 300 ppm of SDS solution to figure out the characteristics of hydrate formation in the pores and the influence of different porous media surface on hydrate formation in the presence of surfactant. The effect of particle size on the hydrate formation and the gas consumption in the three stages of the hydrate formation were also investigated.…”

Section: Introductionmentioning

confidence: 99%

Effect of Porous Media and Sodium Dodecyl Sulphate Complex System on Methane Hydrate Formation

et al. 2018

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Hydrates are mainly stored in the pores of the sedimentary layer, so their formation and storage characteristics in pores are particularly important for the exploitation and utilization of hydrates. Meanwhile, in order to study the rapid formation methods of hydrate, 300 ppm of sodium dodecyl sulfate (SDS) solutions mixed with alumina and silica particles, respectively, were used for investigating the hydrate formation in the pores of porous media under the conditions of 275.15 K and 7 MPa. The particle sizes of alumina and silica were 2, 4, and 6 mm. The experimental results indicated porous media with smaller size could shorten the induction time of the hydrate formation and increase the final gas uptake. In dissolution period and induction period, gas consumption of hydrate formation in alumina particles was larger than that in silica, but the reverse in the growth period. The hydrate formed in alumina particles had a better gas storage ability. In the used SDS solution, the positive charges produced by hydrolysis on the alumina surface and the negative charges produced by polarization and hydration on silica surface affected the distribution of the SDS active group around their surface, which led to the difference of gas storage density between the hydrates formed in these two particles. Finally, with the formation of the hydrate on the wall of the porous medium, the stronger capillary force caused by the decreasing pore size led to a migration of water, which further resulted in the hydrate form in the pores without SDS solution originally.

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Section: Introductionmentioning

confidence: 99%

Effect of Porous Media and Sodium Dodecyl Sulphate Complex System on Methane Hydrate Formation

et al. 2018

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“…Holm and Andersson (2005) published eleven years ago in Astrobiology a review of hydrothermal organic chemistry experiments carried out up to that date. Recent development of experimental systems simulating submarine hydrothermal systems is summarized in Suzuki et al (2015).…”

Section: Experiments Simulating Submarine Hydrothermal Systemsmentioning

confidence: 99%

Laboratory Studies of Methane and Its Relationship to Prebiotic Chemistry

et al. 2017

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To examine how prebiotic chemical evolution took place on Earth prior to the emergence of life, laboratory experiments have been conducted since the 1950s. Methane has been one of the key molecules in these investigations. In earlier studies, strongly reducing gas mixtures containing methane and ammonia were used to simulate possible reactions in the primitive atmosphere of Earth, producing amino acids and other organic compounds. Since Earth's early atmosphere is now considered to be less reducing, the contribution of extraterrestrial organics to chemical evolution has taken on an important role. Such organic molecules may have come from molecular clouds and regions of star formation that created protoplanetary disks, planets, asteroids, and comets. The interstellar origin of organics has been examined both experimentally and theoretically, including laboratory investigations that simulate interstellar molecular reactions. Endogenous and exogenous organics could also have been supplied to the primitive ocean, making submarine hydrothermal systems plausible sites of the generation of life. Experiments that simulate such hydrothermal systems where methane played an important role have consequently been conducted. Processes that occur in other Solar System bodies offer clues to the prebiotic chemistry of Earth. Titan and other icy bodies, where methane plays significant roles, are especially good targets. In the case of Titan, methane is both in the atmosphere and in liquidospheres that are composed of methane and other hydrocarbons, and these have been studied in simulation experiments. Here, we review the wide range of experimental work in which these various terrestrial and extraterrestrial environments have been modeled, and we examine the possible role of methane in chemical evolution. Key Words: Methane-Interstellar environments-Submarine hydrothermal systems-Titan-Origin of life. Astrobiology 17, 786-812.

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Development of Hydrothermal and Frictional Experimental Systems to Simulate Sub-seafloor Water–Rock–Microbe Interactions

Cited by 2 publications

References 72 publications

Effect of Porous Media and Sodium Dodecyl Sulphate Complex System on Methane Hydrate Formation

Effect of Porous Media and Sodium Dodecyl Sulphate Complex System on Methane Hydrate Formation

Laboratory Studies of Methane and Its Relationship to Prebiotic Chemistry

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