Results 61 to 70 of about 27,808 (179)

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

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

Beyond Sabatier: Multiplicate Spillover Phenomena for Manipulating Catalytic Dynamics in Various Electrocatalysis

Advanced Science, EarlyView.
Various spillover‐mediated electrocatalytic reactions, such as hydrogen and oxygen evolution, carbon dioxide and nitrogen reduction, and methanol oxidization reactions, are systematically summarized. Abstract Spillover phenomenon, which is characterized by the dynamic migration of active species across catalyst surfaces, provides a promising avenue to ...
Di Wang, Ziyou Dong, Qianqian Yao, Shixue Dou, Jun Mei, Ziqi Sun   +5 more
wiley   +1 more source

A new global gas hydrate budget based on numerical reaction-transport modeling and a novel parameterization of Holocene and Quaternary sedimentation [PDF]

, 2011
This study provides new estimates for the global methane hydrate inventory based on reaction-transport modeling [1]. A multi-1D model for POC degradation, gas hydrate formation and dissolution is presented.
Burwicz, Ewa, Rüpke, Lars, Wallmann, Klaus   +2 more
core  

Split-beam echosounder observations of natural methane seep variability in the northern Gulf of Mexico [PDF]

, 2015
A method for positioning and characterizing plumes of bubbles from marine gas seeps using an 18 kHz scientific split-beam echo sounder (SBES) was developed and applied to acoustic observations of plumes of presumed methane gas bubbles originating at ...
Beaudoin, Jonathan, Jerram, Kevin W., Weber, Thomas C.   +2 more
core   +2 more sources

In situ benthic fluxes from an intermittently active mud volcano at the Costa Rica convergent margin [PDF]

, 2005
Along the erosive convergent margin off Costa Rica a large number of mound-shaped structures exist built by mud diapirism or mud volcanism. One of these, Mound 12, an intermittently active mud volcano, currently emits large amounts of aqueous dissolved ...
Hensen, Christian, Linke, Peter, Rehder, Gregor, Suess, Erwin, Wallmann, Klaus   +4 more
core   +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

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

The Impact of Organic Constituents in Coal Chemical Wastewater on Additive Adsorption at the Coal Surface: Experimental Investigation and Molecular Dynamics Simulation

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Direct preparation of coal–water slurry using coal chemical wastewater represents an economical and feasible approach for wastewater resource utilization. Unlike clean water, however, the complex organic components in wastewater may exert adverse effects on slurry properties.
Yi Xiang, Zhen Zhao, Fuyan Gao, Zhenghui Zhao, Hang Li, Eric J. Hu, Ruikun Wang   +6 more
wiley   +1 more source