Results 61 to 70 of about 28,105 (213)

Methane gas hydrates of the Black Sea – environmental problem or energy source?

Journal of Innovations and Sustainability, 2022
Purpose. The purpose of this paper is to substantiate the technological solution of equilibrium conditions in the system “methane – water phase – hydrate – R-2M”; to reveal existing ecological problems of methane gas hydrate extraction from the Black Sea
Oleksandr Nalyvaiko, Pavlo Pysarenko, Yevhenii Nalyvaiko, Nikolay Tanchev   +3 more
doaj   +1 more source

STUDY OF THE FORMATION MECHANISM OF GAS HYDRATES OF METHANE IN THE PRESENCE OF SURFACE-ACTIVE SUBSTANCES [PDF]

, 2017
Досліджено вплив поверхнево-активних речовин на механізм утворення газових гідратів метану. Визначено значення критичної концентрації міцелоутворення (ККМ) розчинів дібутілфенола, обробленого окисом етилену (ДБ), а також синтанолів (ДС-10, ДС-20 ...
Bondarenko, V, Sai, K, Svietkina, O
core   +1 more source

Estimation and measurement of permeability inside methane hydrate mimicking porous media

Journal of Fluid Science and Technology, 2016
The objective of this study is to mimic methane hydrate cores at atmospheric pressure conditions with the same permeability as oceanic methane hydrate cores. This became possible by freezing a solution of water, ethanol, and sodium bicarbonate in Toyoura
Guillaume LACAILLE, Hikaru YAMADA, Eita SHOJI, Lin CHEN, Hiroki GONOME, Junnosuke OKAJIMA, Atsuki KOMIYA, Shigenao MARUYAMA   +7 more
doaj   +1 more source

Process pattern of heterogeneous gas hydrate deposits dissociation [PDF]

, 2018
Purpose. Justification of the effective dissociation process parameters of heterogeneous gas hydrate deposits and elaboration of their classification according to the thermal energy consumption. Methodology.
Bоndаrenkо, V.I, Sаi, K.S
core  

Roles of Activated Carbon and Tetrahydrofuran on Methane Hydrate Phase Equilibrium

Chemical Engineering Transactions, 2014
This work studied the effects of activated carbon and tetrathydrofuran (5.56 mol % THF) on methane hydrate phase equilibrium and hydrate dissociation. The hydrate formation was carried out in the quiescent condition and close system at 4 °C.
A. Siangsai, P. Rangsunvigit, B. Kitiyanan, S. Kulprathipanja   +3 more
doaj   +1 more source

A Numerical Model for Determining Deep Methane Flux Linked to the Free Gas Zone: Application to the Ocean Drilling Program Site 995 and Implications for Regional Deep Methane Flux at the Blake Ridge

Frontiers in Marine Science, 2022
The lack of the quantification of deep dissolved methane flux prevents us from accurately understanding hydrate accumulation and distribution at a given geologic setting where vertically upward methane advection dominates the hydrate system.
Zihan Zheng, Yuncheng Cao, Wenyue Xu, Duofu Chen   +3 more
doaj   +1 more source

Density Functional Theory Based Investigation of 1-Butyl-3-Methylidazolium as a Potential Methane Hydrate Inhibitor [PDF]

, 2015
Basically methane hydrate is solid crystal same as ice in which methane are trapped inside the cages of H-bonded water molecules. Low temperature and high pressure conditions are good for methane hydrates formation. Such type of condition prevails in gas
Choudhury, Satyam
core  

Estimates of future warming-induced methane emissions from hydrate offshore west Svalbard for a range of climate models [PDF]

, 2015
Methane hydrate close to the hydrate stability limit in seafloor sediment could represent an important source of methane to the oceans and atmosphere as the oceans warm.
Archer, Bablu Sinha, Bentsen, Berndt, Beszczynska-Möller, Biastoch, Boetius, Borowski, Chabert, Collins, Crane, Dickens, Dlugokencky, Fisher, Freeze, Gent, Genuchten, Giustiniani, Gordon, Graham K. Westbrook, Hasselmann, Hassol, Hawkins, Hiscock, Hunter, Héctor Marín-Moreno, Iversen, Jakobsson, Jones, Liu, MacDonald, Marsland, Marti, Marín-Moreno, McGuire, Moss, Nisbet, Panieri, Piñero, Rajan, Reagan, Reagan, Rhein, Sahling, Sarkar, Shakhova, Sloan, Smith, Stone, Stroeve, Thatcher, Timothy A. Minshull, Westbrook, Westbrook, Xu, Yukimoto   +55 more
core   +1 more source

Technobiological Pathways for High‐CO₂ Capture Using Micro‐/Macroalgae: Genetic Engineering, Process Automation, and Value‐Added Bioproducts

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Greenhouse gas (GHG) emissions have emerged as one of the most critical drivers of climate change; this is primarily due to high concentrations and long atmospheric life of carbon dioxide (CO2). For a significant amount of time, various biological processes such as microalgal cultivation, cyanobacterial systems, photosynthetic microorganisms ...
Sadhana Semwal, Harish Chandra Joshi
wiley   +1 more source

Thermal Conductivity of Methane-Hydrate [PDF]

Journal of Low Temperature Physics, 2005
The thermal conductivity of the methane hydrate CH4 (5.75 H2O) was measured in the interval 2-140 K using the steady-state technique. The thermal conductivity corresponding to a homogeneous substance was calculated from the measured effective thermal conductivity obtained in the experiment.
Krivchikov, A. I., Gorodilov, B. Ya., Korolyuk, O. A., Manzhelii, V. G., Conrad, H., Press, W.   +5 more
openaire   +2 more sources