Relevant bibliographies by topics / Methane. Carbon dioxide. Hydrates

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Methane. Carbon dioxide. Hydrates'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Methane. Carbon dioxide. Hydrates.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Methane. Carbon dioxide. Hydrates"

1

Horvat, Kristine, and Devinder Mahajan. "Carbon dioxide-induced liberation of methane from laboratory-formed methane hydrates." Canadian Journal of Chemistry 93, no. 9 (September 2015): 998–1006. http://dx.doi.org/10.1139/cjc-2014-0562.

Full text
Abstract:
This paper reports a laboratory mimic study that focused on the extraction of methane (CH4) from hydrates coupled with sequestration of carbon dioxide (CO2) as hydrates, by taking advantage of preferential thermodynamic stability of hydrates of CO2 over CH4. Five hydrate formation-decomposition runs focused on CH4–CO2 exchange, two baselines and three with host sediments, were performed in a 200 mL high-pressure Jerguson cell fitted with two glass windows that allowed visualization of the time-resolved hydrate phenomenon. The baseline pure hydrates formed from artificial seawater (75 mL) under 6400–6600 kPa CH4 or 2800–3200 kPa CO2 (hydrate forming regime), when the bath temperature was maintained within 4–6 °C and the gas/liquid volumetric ratio was ∼1.7:1 in the water-excess systems. The data show that the induction time for hydrate appearance was largest at 96 h with CH4, while with CO2 the time shortened by a factor of four. However, when the secondary gas (CO2 or CH4) was injected into the system containing preformed hydrates, the entering gas formed the hydrate phase instantly (within minutes) and no lag was observed. In a system containing host Ottawa sand (104 g) and artificial seawater (38 mL), the induction period reduced to 24 h. In runs with multiple charges, the extent of hydrate formation reached 44% of the theoretical value in the water-excess system, whereas the value maximized at 23% in the gas-excess system. The CO2 hydrate formation in a system that already contained CH4 hydrates was facile and they remained stable, whereas CH4 hydrate formation in a system consisting of CO2 hydrates as hosts were initially stable, but CH4 gas in hydrates quickly exchanged with free CO2 gas to form more stable CO2 hydrates. In all five runs, even though the system was depressurized, left for over a week at room temperature, and flushed with nitrogen gas in between runs, hydrates exhibited the “memory effect”, irrespective of the gas used, a result in contradiction with that reported previously in the literature. The facile CH4–CO2 exchange observed under temperature and pressure conditions that mimic naturally occurring CH4 hydrates show promise to develop a commercial carbon sequestration system.
APA, Harvard, Vancouver, ISO, and other styles
2

Klapproth, A., E. Goreshnik, D. Staykova, H. Klein, and W. F. Kuhs. "Structural studies of gas hydrates." Canadian Journal of Physics 81, no. 1-2 (January 1, 2003): 503–18. http://dx.doi.org/10.1139/p03-024.

Full text
Abstract:
An overview of recent structural work focusing on the gas hydrates of methane and carbon dioxide is given. Both the crystal structure and the microstructure are considered. We report on the pressure-dependent molecular structure of methane clathrate hydrate using laboratory-made hydrogenous and deuterated samples investigated by neutron and hard-X-ray synchrotron diffraction experiments. The isothermal compressibilities are determined for hydrogenated and deuterated CH4 hydrate, and isotopic differences between both compounds are established for the first time. The cage filling of carbon dioxide and methane hydrate is determined and compared with predictions from statistical thermodynamic theory. In the case of small cages in methane hydrate, experimental results and predictions do not agree. Field-emission scanning electron microscopy reveals the meso- to macro-porous nature of gas hydrates formed with an excess of free gas. Furthermore, in situ measurements of the formation kinetics of porous hydrates are reported in which differences between methane and carbon dioxide are established quantitatively and the transient existence of a type II carbon dioxide structure is found. PACS Nos.: 82.75-z, 61.10Nz, 61.12Ld, 68.37Hk
APA, Harvard, Vancouver, ISO, and other styles
3

Borodin, Stanislav L., and Denis S. Belskikh. "Mathematical modeling of the equilibrium complete replacement of methane by carbon dioxide in a gas hydrate reservoir at negative temperatures." Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy 6, no. 2 (2020): 63–80. http://dx.doi.org/10.21684/2411-7978-2020-6-2-63-80.

Full text
Abstract:
Gas hydrates, which contain the largest amount of methane on our planet, are a promising source of natural gas after the depletion of traditional gas fields, the reserves of which are estimated to last about 50 years. Therefore, it is necessary to study the methods for extracting gas from gas hydrates in order to select the best of them and make reasoned technological and engineering decisions in the future. One of these methods is the replacement of methane in its hydrate with carbon dioxide. This work studies the construction of a mathematical model to observe this method. The following process is considered in this article: on one side of a porous reservoir, initially saturated with methane and its hydrate, carbon dioxide is injected; on the opposite side of this reservoir, methane and/or carbon dioxide are extracted. In this case, both the decomposition of methane hydrate and the formation of carbon dioxide hydrate can occur. This problem is stated in a one-dimensional linear formulation for the case of negative temperatures and gaseous carbon dioxide, which means that methane, carbon dioxide, ice, methane, and carbon dioxide hydrates may be present in the reservoir. A mathematical model is built based on the following: the laws of conservation of masses of methane, carbon dioxide, and ice; Darcy’s law for the gas phase motion; equation of state of real gas; energy equation taking into account thermal conductivity, convection, adiabatic cooling, the Joule — Thomson effect, and the release or absorption of latent heat of hydrate formation. The modelling assumes that phase transitions occur in an equilibrium mode and that methane can be completely replaced by carbon dioxide. The results of numerical experiments are presented.
APA, Harvard, Vancouver, ISO, and other styles
4

Borodin, Stanislav L., and Denis S. Belskikh. "The Current State of Researches Related to the Extraction of Methane from a Porous Medium Containing Hydrate." Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy 4, no. 4 (December 17, 2018): 131–47. http://dx.doi.org/10.21684/2411-7978-2018-4-4-131-147.

Full text
Abstract:
In the next few decades due to a depletion of traditional gas deposits, a question of using alternative sources of natural gas, such as gas hydrates deposits, might arise. Besides, there is a problem of existing greenhouse effect, which is constantly aggravated by increasing carbon dioxide emissions into the atmosphere. At the same time, carbon dioxide can replace methane in gas hydrates and remain in its stable hydrate state in the reservoir. Therefore, available deposits of hydrates are not only potential sources of energy, but also allow a sequestration (“burial”) of carbon dioxide with simultaneous extraction of methane.<br> Several “classical” approaches to extract gas from its hydrate are discussed in the article: depressurization method (pressure reduction), thermal impact (temperature increase), and inhibitors’ use. Laboratory and practical experience of those approaches is reviewed, and their advantages and disadvantages are briefly described. Next, the most promising exchange method for simultaneous sequestration of the greenhouse gas and the production of energy is studied. The paper includes the results of this method’s use in the laboratory and the only practical application currently. The advantage of using a mixture of nitrogen and carbon dioxide for the exchange method was demonstrated, which significantly increases methane extraction degree from its hydrates, which was tested on the first well using this method. Comparing to previous studies reviewing this subject, additional studies related to methane exchange method in hydrates over the last two years were studied.<br> The exchange method is acknowledged the most effective since it ensures a successful extraction of methane from gas hydrate deposits and a “burial” of greenhouse carbon dioxide. In this case, the highest percentage of methane extraction is observed when a mixture of carbon dioxide and nitrogen is injected into the formation. An additional advantage is the exchange can be combined with depressurization and thermal impact. The most promising for research and further application is the combined method for obtaining energy and disposing of the resulting greenhouse carbon dioxide gas. First, a hot mixture of carbon dioxide and nitrogen from combustion of methane on a power plant is pumped into the reservoir through the first well. Then, decomposition/exchange of methane hydrates occurs in the formation. Methane and associated products of its decomposition/exchange are extracted through the second well by depressurization method, and then the methane is cleaned and fed to the power plant for further combustion.
APA, Harvard, Vancouver, ISO, and other styles
5

Gambelli, Alberto Maria, Beatrice Castellani, Mirko Filipponi, Andrea Nicolini, and Federico Rossi. "Experimental analysis of the CO2/CH4 Replacement Efficiency due to Sodium Chloride Presence in Natural Gas Hydrates Reservoirs." E3S Web of Conferences 197 (2020): 08008. http://dx.doi.org/10.1051/e3sconf/202019708008.

Full text
Abstract:
Nowadays natural gas hydrates represent a promising opportunity for counteracting several crucial issues of the 21th century. They are a valid answer to the continuously increasing energy demand, moved by the global population growth; moreover, considering their conformation and the possibility of using them for carbon dioxide permanently storage, gas hydrates may become a carbon neutral energy source, where for each methane molecule recovered, another carbon dioxide molecule is entrapped in solid form. Considering that the combustion of one methane molecule for energy production leads to the formation of one CO2 molecule, the hydrates exploitation can be considered a clean process in terms of impact on the climate change. This work shows how the presence of sodium chloride affects the CO2/CH4 replacement process into a gas hydrates reservoir. Replacement experimental results carried out in pure demineralised water were compared with the same values performed in a mixture of water and salt, having a concentration of 37 g/l. Some parameters of interest were discussed, such us methane hydrates formed before the replacement process, total amount of hydrates (composed by both species) reached at the end of the whole process, CO2 moles that formed hydrate, quantity of hydrate present before the replacement process which were actually involved in the CO2/CH4 exchange and carbon dioxide amount which led to the formation of new hydrates structures.
APA, Harvard, Vancouver, ISO, and other styles
6

Nago, Annick, and Antonio Nieto. "Natural Gas Production from Methane Hydrate Deposits Using Clathrate Sequestration: State-of-the-Art Review and New Technical Approaches." Journal of Geological Research 2011 (August 28, 2011): 1–6. http://dx.doi.org/10.1155/2011/239397.

Full text
Abstract:
This paper focuses on reviewing the currently available solutions for natural gas production from methane hydrate deposits using CO2 sequestration. Methane hydrates are ice-like materials, which form at low temperature and high pressure and are located in permafrost areas and oceanic environments. They represent a huge hydrocarbon resource, which could supply the entire world for centuries. Fossil-fuel-based energy is still a major source of carbon dioxide emissions which contribute greatly to the issue of global warming and climate change. Geological sequestration of carbon dioxide appears as the safest and most stable way to reduce such emissions for it involves the trapping of CO2 into hydrocarbon reservoirs and aquifers. Indeed, CO2 can also be sequestered as hydrates while helping dissociate the in situ methane hydrates. The studies presented here investigate the molecular exchange between CO2 and CH4 that occurs when methane hydrates are exposed to CO2, thus generating the release of natural gas and the trapping of carbon dioxide as gas clathrate. These projects include laboratory studies on the synthesis, thermodynamics, phase equilibrium, kinetics, cage occupancy, and the methane recovery potential of the mixed CO2–CH4 hydrate. An experimental and numerical evaluation of the effect of porous media on the gas exchange is described. Finally, a few field studies on the potential of this new gas hydrate recovery technique are presented.
APA, Harvard, Vancouver, ISO, and other styles
7

Klymenko, Vasyl, Yuriy Denysov, Oleksandr Skrypnyk, Skrypnyk Kononchuk, and Ruslan Teliuta. "Mining of methane from deposits subaquatic gas hydrates using OTEС." E3S Web of Conferences 230 (2021): 01009. http://dx.doi.org/10.1051/e3sconf/202123001009.

Full text
Abstract:
The article proposes to using Ocean Thermal Energy Conversion (OTEC) to increase the energy efficiency mining of methane from deposits subaquatic gas hydrates on the gas hydrate cycle (GHET), that will allow not to spend 10-15% of the extracted methane for power supply of a gas-producing complex (GPC). The circuit-technological solution GPC is described, according to which carbon dioxide is introduced into the gas hydrate layer to extract methane from gas hydrates. To improve the kinetics of the process of replacement of methane with carbon dioxide in gas hydrates, it is proposed do recirculation part of CO2. The scheme and cycle of gas-hydrate energy-technological installation GHET are given, which operates using OTEC and generates together with electricity for GPC, fresh water and cold. Based on the method proposed in this paper, a comparative thermodynamic analysis of installations using OTEC for Black Sea conditions was performed. by GHET and Anderson cycles and it is shown that the specific useful work obtained in the GHET cycle, approximately 3 times more, and energetic efficiency 1.5 times more.
APA, Harvard, Vancouver, ISO, and other styles
8

Janicki, Georg, Stefan Schlüter, Torsten Hennig, Hildegard Lyko, and Görge Deerberg. "Simulation of Methane Recovery from Gas Hydrates Combined with Storing Carbon Dioxide as Hydrates." Journal of Geological Research 2011 (October 18, 2011): 1–15. http://dx.doi.org/10.1155/2011/462156.

Full text
Abstract:
In the medium term, gas hydrate reservoirs in the subsea sediment are intended as deposits for carbon dioxide (CO2) from fossil fuel consumption. This idea is supported by the thermodynamics of CO2 and methane (CH4) hydrates and the fact that CO2 hydrates are more stable than CH4 hydrates in a certain P-T range. The potential of producing methane by depressurization and/or by injecting CO2 is numerically studied in the frame of the SUGAR project. Simulations are performed with the commercial code STARS from CMG and the newly developed code HyReS (hydrate reservoir simulator) especially designed for hydrate processing in the subsea sediment. HyReS is a nonisothermal multiphase Darcy flow model combined with thermodynamics and rate kinetics suitable for gas hydrate calculations. Two scenarios are considered: the depressurization of an area 1,000 m in diameter and a one/two-well scenario with CO2 injection. Realistic rates for injection and production are estimated, and limitations of these processes are discussed.
APA, Harvard, Vancouver, ISO, and other styles
9

Khasanov, M. K., and G. R. Rafikova. "Analysis of methane production intensity during its displacement from a gas hydrate formation by carbon dioxide." Multiphase Systems 14, no. 3 (2019): 149–56. http://dx.doi.org/10.21662/mfs2019.3.021.

Full text
Abstract:
The theoretical model is considered in the one-dimensional approximations and numerical solutions are obtained for the process of replacing methane with carbon dioxide from a hydrate in a formation saturated with methane and its hydrate when carbon dioxide is injected into the formation. The process is considered under thermobaric conditions corresponding to the stability region of methane gas and carbon dioxide and the region of existence of CO2 in the form of a gaseous phase. The case is considered when the rate of carbon dioxide hydrate formation is limited by diffusion of carbon dioxide through the formed hydrate layer between the gas mixture stream and methane hydrate. It is accepted that the hydration substitution process occurs without the release of water from the hydrate. To describe the mathematical model, the main equations are the mass conservation equations for methane, carbon dioxide and their hydrates, Darcy’s law for filtration, Fick’s law for diffusive mixing of the gas mixture, state equations for the gas phase, Dalton’s law, energy equation, diffusion equation for transport CO2 through the hydration layer at the pore microchannel scale. The dynamics of the mass flow rates of the outgoing carbon dioxide and methane recovered has been investigated. The influence of the diffusion coefficient, the absolute permeability and the length of the formation on the intensity of the methane produced as a result of the gas substitution process is analyzed. Three main stages of the process were identified: displacement of free methane from the reservoir; extraction of free methane obtained as a result of the beginning of hydrate substitution in the formation; complete conversion of methane hydrate to carbon dioxide hydrate and complete extraction of methane from the formation. It is determined how the two main factors relate to each other in terms of the degree of influence on the replacement rate: heat and mass transfer in the reservoir and the kinetics of the replacement process.
APA, Harvard, Vancouver, ISO, and other styles
10

Adisasmito, Sanggono, Robert J. Frank, and E. Dendy Sloan. "Hydrates of carbon dioxide and methane mixtures." Journal of Chemical & Engineering Data 36, no. 1 (January 1991): 68–71. http://dx.doi.org/10.1021/je00001a020.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Methane. Carbon dioxide. Hydrates"

1

Bancroft, Naomi. "Infrared behavior of structure I methane and carbon dioxide hydrates." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99402.

Full text
Abstract:
Fourier transform infrared (FTIR) spectroscopy is commonly used in solution crystallization studies to monitor the crystal formation process. This analysis reflects the molecular vibrations within the solution. A crystallization process that is currently a very popular area of study is hydrate formation due to the possible application of gas hydrate research in the energy sector. A study of molecular vibrations was performed on two types of structure I gas hydrate, methane and carbon dioxide. Experiments were performed with a specialized high pressure sample cell placed inside an FTIR spectrometer. The experimentation was carried out at 253.15 K for both the methane and carbon dioxide systems and a pressure range of 2100 to 6800 kPa for the methane system and 1400 to 1700 kPa for the carbon dioxide system. This line of experimentation was able to assist in mapping the IR behavior of the hydrates studied and establish the presence of hydrate within a sample.
APA, Harvard, Vancouver, ISO, and other styles
2

Velaga, Srinath Chowdary. "Phase equilibrium and cage occupancy calculations of carbon dioxide hydrates using ab initio intermolecular potentials." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10441.

Full text
Abstract:
Thesis (M.S.)--West Virginia University, 2009.
Title from document title page. Document formatted into pages; contains x, 114 p. : ill. (some col.). Includes abstract. Includes bibliographical references.
APA, Harvard, Vancouver, ISO, and other styles
3

Vedam, Venkata S. "Stability of carbon dioxide and methane hydrates in water in presence of small driving forces using MD simulations." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10794.

Full text
Abstract:
Thesis (M.S.)--West Virginia University, 2009.
Title from document title page. Document formatted into pages; contains viii, 93 p. : ill. (some col.), col. map. Includes abstract. Includes bibliographical references.
APA, Harvard, Vancouver, ISO, and other styles
4

Kakitani, Celina. "Estudo do equilíbrio de fases de hidratos de metano e da mistura metano e dióxido de carbono." Universidade Tecnológica Federal do Paraná, 2014. http://repositorio.utfpr.edu.br/jspui/handle/1/1035.

Full text
Abstract:
Petrobrás
Hidratos são estruturas cristalinas constituídas por moléculas de água e gás ou líquido, sendo que a estabilização dessa estrutura cristalina requer condições de altas pressões e/ou baixas temperaturas. A formação e a aglomeração de hidratos podem causar o bloqueio de linhas de transporte de óleo e/ou gás, reduzindo a eficiência do processo, danificando os equipamentos e comprometendo a segurança da parte operacional. Neste cenário, no presente trabalho é apresentado o estudo numérico-experimental de equilíbrio de fases dos hidratos para identificar as regiões de formação e adequar as condições de operação na indústria petrolífera. Para a predição das condições de formação dos hidratos é desenvolvido um modelo termodinâmico baseado na teoria de sólido ideal de van der Waals e Platteeuw. O modelo é fundamentado na igualdade dos potenciais químicos de todas as espécies em todas as fases (água líquida, hidrato e vapor). Para os cálculos de equilíbrio da fase hidrocarboneto foi utilizada a equação de estado de Soave Redlich-Kwong e o método da secante foi utilizado para solucionar o modelo iterativamente. As medidas experimentais foram realizadas utilizando metano puro e a mistura metano (90 % em mol) e dióxido de carbono e os testes foram realizados em duas bancadas distintas, sendo os procedimentos realizados semelhantes, baseados no método isocórico pela monitoração da resposta da pressão do sistema com a variação da temperatura. Os resultados experimentais e numéricos obtidos foram comparados com dados da literatura com a finalidade de validar o modelo termodinâmico proposto, o aparato experimental e o procedimento adotado. O erro absoluto máximo entre os resultados obtidos experimentalmente e do modelo termodinâmico desenvolvido foi de 0,57%. Desta forma, nota-se os resultados apresentaram boa concordância entre os dados experimentais e os da modelagem numérica.
Hydrates are crystalline structures composed by molecules of water or liquid and gas, and the crystal structure that requires stabilization conditions of high pressure and/or low temperatures. The formation and agglomeration of hydrates can cause blockage of transmission lines oil and / or gas, reducing process efficiency, damaging the equipment and compromise the safety of the operating part. In this scenario, in this paper the numerical-experimental study of phase equilibria of hydrates is presented to identify the regions of formation and adjust the operating conditions in the oil industry. To predict hydrate formation conditions of a thermodynamic model based on the ideal solid solution theory by van der Waals and Platteeuw is developed. The model is based on the equality of the chemical potentials of all species in all phases (liquid water, vapor and hydrate). The SoaveRedlich-Kwong equation of state was employed for the phase equilibrium properties of the hydrocarbon fluid phase and the secant method was used to solve the model iteratively. Experimental measurements were performed using pure methane and methane mixture (90 mol%) and carbon dioxide, and the tests were performed on two separate stands, and similar procedures performed based on the isochoric method by monitoring the pressure response of the system with changes in the temperature. The experimental and numerical results were compared with literature data in order to validate the proposed thermodynamic model, the experimental apparatus and procedure adopted. The maximum absolute error between the experimental results and thermodynamic model was 0.57%. Thus, the results showed good agreement between experimental data and numerical modeling.
APA, Harvard, Vancouver, ISO, and other styles
5

Podgrajsek, Eva. "Lake Fluxes of Methane and Carbon Dioxide." Doctoral thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-241984.

Full text
Abstract:
Methane (CH4) and carbon dioxide (CO2) are two important greenhouse gases. Recent studies have shown that lakes, although they cover a small area of the globe, can be very important natural sources of atmospheric CH4 and CO2. It is therefore important to monitor the fluxes of these gases between lakes and the atmosphere in order to understand the processes that govern the exchange. By using the eddy covariance method for lake flux studies, the resolution in time and in space of the fluxes is increased, which gives more information on the governing processes. Eddy covariance measurements at a Swedish lake revealed a diel cycle in the fluxes of both CH4 and CO2, with higher fluxes during nighttime than daytime. The high nighttime CO2 fluxes could to a large extent be explained with enhanced transfer velocities due to waterside convection. For the diel cycle of CH4 flux it was suggested that waterside convection could enhance the transfer velocity, transport CH4 rich water to the surface, as well as trigger ebullition. Simultaneous flux measurements of CH4 and CO2 have been presented using both the eddy covariance method and the floating chambers method of which the latter is the traditional measuring method for lake fluxes. For CO2 the two methods agreed well during some periods but differed considerably during others. Disagreement between the methods might be due to horizontal heterogeneity in partial pressure of CO2 in the lake. The methods agreed better for the CH4 flux measurements. However, it is clear that due to the discontinuous nature of the floating chambers, this method will likely miss important high flux events. The main conclusions of this thesis are: 1) the two gas flux methods are not directly comparable and should be seen as supplementary to each other 2) waterside convection enhances the fluxes of both CH4 and CO2 over the water-air surface. If gas flux measurements are not conducted during nighttime, potential high flux periods might be missed and estimates of the total amount of gas released from lakes to the atmosphere may be biased.
APA, Harvard, Vancouver, ISO, and other styles
6

Myre, Denis. "Synthesis of Carbon Dioxide Hydrates in a Slurry Bubble Column." Thesis, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/19789.

Full text
Abstract:
Carbon dioxide hydrates were synthesized in a 0.10m I.D. and 1.22m tall bubble column equipped with a cooling jacket for heat removal. Visual observations at different driving forces (pressures between 2.75 and 3.60 MPa and temperatures between 0 and 8ºC) were recorded with a digital camera through a sight glass of 118.8 by 15.6 mm. The superficial gas velocity was varied from 20 to 50 mm/s to attain different levels of turbulence in the liquid. The growth rate was found to be dependent on the sequence/method used to reach the operating temperature and pressure. A greater supersaturation was obtained when the system temperature and pressure were reached with very low or no bubble-induced mixing. As a result, hydrates nucleated and grew immediately when starting the gas flow with the reactor volume being quickly filled with hydrates. Moreover, the hydrate growth rate and solution final density were higher when operating conditions partially condensed CO2 resulting in greater interphase mass transfer rates. In parallel, since hydrate formation is an exothermic process and the reaction is often limited by the rate of heat removal, heat transfer measurements were achieved in a simulated hydrate environment. The instantaneous heat transfer coefficient and related statistics gave insight on the role of bubbles on heat transfer and hydrodynamics.
APA, Harvard, Vancouver, ISO, and other styles
7

Hoyt, Alison May. "Carbon fluxes from tropical peatlands : methane, carbon dioxide, and peatland subsidence." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/113476.

Full text
Abstract:
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2017
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 125-138).
Tropical peatlands in Southeast Asia have sequestered carbon over thousands of years and are an important global carbon stock. In natural peat swamp forests, high water levels inhibit decomposition due to anoxic conditions. However, they are being rapidly deforested and drained, releasing stored carbon to the atmosphere. In this thesis, we investigate the carbon dioxide and methane fluxes from both pristine and degraded peat swamp forests in Borneo using field measurements, modeling and remote sensing. We first study methane fluxes from natural peatlands. We use an isotope-based mass transport model to evaluate the extent of methane production, transport and oxidation. We find an order of magnitude more methane is produced than surface fluxes suggest. This dissolved methane is transported belowground to the rivers and streams draining peatlands. However, much of this methane is oxidized before reaching the atmosphere. We then study CO₂ emissions from peatlands. At the local scale, we use automated soil respiration chambers to assess how CO₂ emissions depend on temperature and water table. At a regional scale, we use remote sensing to investigate carbon losses due to peatland degradation. Drainage of peatlands enables peat decomposition and results in subsidence of the land surface. We track this subsidence using InSAR satellite data and use it to quantify regional CO₂ emissions. The spatial resolution of our technique allows us to uncover correlations with past and present land uses and peatland hydrology.
by Alison May Hoyt.
Ph. D.
Ph.D. Massachusetts Institute of Technology, Department of Civil and Environmental Engineering
APA, Harvard, Vancouver, ISO, and other styles
8

Al-hawaree, Mohamad. "Geomechanics of carbon dioxide sequestration in coalbed methane reservoirs." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0019/MQ47000.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Freitas, Nancy Louise. "Methane and Carbon Dioxide Dynamics in Arctic Lake Sediments." Thesis, The University of Arizona, 2015. http://hdl.handle.net/10150/579063.

Full text
Abstract:
Rising global temperatures are expected to increase concentrations of greenhouse gases emitted by northern latitudes within the current century. The impact of global warming on Arctic lacustrine systems is generally unknown, although recent studies have examined fluxes of carbon dioxide (CO₂) and methane (CH₄) produced in ebullition events. Few studies have investigated the added impact of atmospheric warming on lake sediments, which produce CO₂ and CH₄ through microbial decomposition and diffusive loss in the water column. To better understand carbon emission scenarios at elevated temperatures, sediment samples from Abisko, Sweden were analyzed for CO₂ and CH₄ production rates through incubation studies, and for concentrations of dissolved inorganic carbon (DIC) and dissolved CH₄ in sediment and porewater. Results showed that room temperature incubations emitted concentrations of CO₂ and CH₄ up to five times greater than those emitted by +5°C incubations. Furthermore, documented peat emissions were one to two orders of magnitude lower than the lake sediment incubation emissions reported in this paper. This study provides some of the first point source microbial emissions by lake sediment depth, and highlights that northern latitude sediments could have unprecedented effects on current spatial and temporal projections of Arctic warming.
APA, Harvard, Vancouver, ISO, and other styles
10

Pusel, Julia M. "Heterogeneous catalysts for hydrogen production from methane and carbon dioxide." Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1585646.

Full text
Abstract:

Several heterogeneous catalysts were studied for synthesis gas production through dry reforming of methane (DRM). This process uses carbon dioxide in lieu of the steam that is traditionally used in conventional methane reforming to produce hydrogen that can then be repurposed in more chemical processes [2]. The monometallic catalysts explored were Ni/Al2O3 and Ni/CeZrO2 followed by their bimetallic versions PtNi/Al 2O3 and PtNi/CeZrO2 at 800°C. In addition to these catalysts, platinum supported Zeolitic Imidazolate Framework (ZIF)-8 was also investigated in comparison with PtNi/CeZrO2 at 490°C. The studies suggest that these catalysts are suitable for promoting the dry reforming of methane for hydrogen production.

APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Methane. Carbon dioxide. Hydrates"

1

Mei ceng xi fu te zheng ji chu qi ji li. Beijing Shi: Ke xue chu ban she, 2013.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

United States. Department of Agriculture. Global Change Program Office. U.S. agriculture and forestry greenhouse gas inventory: 1990-2008. Washington, D.C.?]: U.S. Dept. of Agriculture, Office of the Chief Economist, Global Change Program Office, 2011.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Savage, Kathleen. BOREAS TGB-1 [i.e. TGB-3] CH4 and CO2 chamber flux data over NSA upland sites. Greenbelt, Md: NASA Goddard Space Flight Center, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Savage, Kathleen. BOREAS TGB-1 [i.e. TGB-3] CH4 and CO2 chamber flux data over NSA upland sites. Greenbelt, Md: NASA Goddard Space Flight Center, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Jaques, A. P. Trends in Canada's greenhouse gas emissions (1990-1995). Ottawa: Air Pollution Prevention Directorate, Pollution Data Branch, Environment Canada, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Jaques, A. P. Trends in Canada's greenhouse gas emissions (1990-1995). Ottawa: Air Pollution Prevention Directorate, Pollution Data Branch, Environment Canada, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Ciborowski, Peter. Minnesota greenhouse gas inventory, 1990. [St. Paul: Air Quality Division, Minnesota Pollution Control Agency, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Burniaux, Jean-Marc. A multi-gas assessment of the Kyoto Protocol. Paris: OECD, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Burniaux, Jean-Marc. A multi-gas assessment of the Kyoto Protocol. Paris: O.E.C.D., 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Burniaux, Jean-Marc. A multi-gas assessment of the Kyoto Protocol. Paris: OECD, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Methane. Carbon dioxide. Hydrates"

1

Aresta, Michele, Angela Dibenedetto, and Eugenio Quaranta. "Thermodynamics and Applications of CO2 Hydrates." In Reaction Mechanisms in Carbon Dioxide Conversion, 373–402. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-46831-9_10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Barry, D. L. "Hazards from methane (and carbon dioxide)." In Reclaiming Contaminated Land, 223–55. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-011-6504-4_11.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Pinaeva, L., Y. Schuurman, and C. Mirodatos. "Carbon Routes in Carbon Dioxide Reforming of Methane." In Environmental Challenges and Greenhouse Gas Control for Fossil Fuel Utilization in the 21st Century, 313–27. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0773-4_22.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Elvert, Marcus, Jens Greinert, Erwin Suess, and Michael J. Whiticar. "Carbon Isotopes of Biomarkers Derived from Methane-Oxidizing Microbes at Hydrate Ridge, Cascadia Convergent Margin." In Natural Gas Hydrates, 115–29. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm124p0115.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Abril, Gwenaël, and Alberto Vieira Borges. "Carbon Dioxide and Methane Emissions from Estuaries." In Greenhouse Gas Emissions — Fluxes and Processes, 187–207. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/978-3-540-26643-3_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Winkelmann, J. "Diffusion of carbon dioxide (1); methane (2)." In Gases in Gases, Liquids and their Mixtures, 243. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-49718-9_83.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Winkelmann, J. "Diffusion of carbon dioxide (1); methane (2)." In Gases in Gases, Liquids and their Mixtures, 839. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-49718-9_550.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Winkelmann, J. "Diffusion of tetrachloro-methane (1); carbon dioxide (2)." In Gases in Gases, Liquids and their Mixtures, 1603. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-49718-9_1221.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Winkelmann, J. "Diffusion of trichloro-methane (1); carbon dioxide (2)." In Gases in Gases, Liquids and their Mixtures, 1605. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-49718-9_1223.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Winkelmann, J. "Diffusion of dichloro-methane (1); carbon dioxide (2)." In Gases in Gases, Liquids and their Mixtures, 1606. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-49718-9_1224.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Methane. Carbon dioxide. Hydrates"

1

Luiz Henrique Accorsi Gans, Guilherme Mühlstedt, Paulo Henrique Dias dos Santos, Moises Alves Marcelino Neto, Rigoberto Eleazar Melgarejo Morales, and Amadeu K. Sum. "HYDRATE FILM GROWTH MODEL - MASS AND ENERGY TRANSPORT FOR METHANE AND CARBON DIOXIDE HYDRATES." In 23rd ABCM International Congress of Mechanical Engineering. Rio de Janeiro, Brazil: ABCM Brazilian Society of Mechanical Sciences and Engineering, 2015. http://dx.doi.org/10.20906/cps/cob-2015-1083.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Aregbe, Azeez Gbenga, and Ayoola Idris Fadeyi. "A Comprehensive Review on CO2/N2 Mixture Injection for Methane Gas Recovery in Hydrate Reservoirs." In SPE Nigeria Annual International Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/207092-ms.

Full text
Abstract:
Abstract Clathrate hydrates are non-stoichiometric compounds of water and gas molecules coexisting at relatively low temperatures and high pressures. The gas molecules are trapped in cage-like structures of the water molecules by hydrogen bonds. There are several hydrate deposits in permafrost and oceanic sediments with an enormous amount of energy. The energy content of methane in hydrate reservoirs is considered to be up to 50 times that of conventional petroleum resources, with about 2,500 to 20,000 trillion m3 of methane gas. More than 220 hydrate deposits in permafrost and oceanic sediments have been identified to date. The exploration and production of these deposits to recover the trapped methane gas could overcome the world energy challenges and create a sustainable energy future. Furthermore, global warming is a major issue facing the world at large and it is caused by greenhouse gas emissions such as carbon dioxide. As a result, researchers and organizations have proposed various methods of reducing the emission of carbon dioxide gas. One of the proposed methods is the geological storage of carbon dioxide in depleted oil and gas reservoirs, oceanic sediments, deep saline aquifers, and depleted hydrate deposits. Studies have shown that there is the possibility of methane gas production and carbon dioxide storage in hydrate reservoirs using the injection of carbon dioxide and nitrogen gas mixture. However, the conventional hydrocarbon production methods cannot be used for the hydrate reservoirs due to the nature of these reservoirs. In addition, thermal stimulation and depressurization are not effective methods for methane gas production and carbon sequestration in hydrate-bearing sediments. Therefore, the gas replacement method for methane production and carbon dioxide storage in clathrate hydrate is investigated in this paper. The research studies (experiments, modeling/simulation, and field tests) on CO2/N2 gas mixture injection for the optimization of methane gas recovery in hydrate reservoirs are reviewed. It was discovered that the injection of the gas mixture enhanced the recovery process by replacing methane gas in the small and large cages of the hydrate. Also, the presence of N2 molecules significantly increased fluid injectivity and methane recovery rate. In addition, a significant amount of free water was not released and the hydrate phase was stable during the replacement process. It is an effective method for permanent storage of carbon dioxide in the hydrate layer. However, further research studies on the effects of gas composition, particle size, and gas transport on the replacement process and swapping rate are required.
APA, Harvard, Vancouver, ISO, and other styles
3

Sadeq, Dhifaf, Omar Al-Fatlawi, Stefan Iglauer, Maxim Lebedev, Callum Smith, and Ahmed Barifcani. "Hydrate Equilibrium Model for Gas Mixtures Containing Methane, Nitrogen and Carbon Dioxide." In Offshore Technology Conference. Offshore Technology Conference, 2020. http://dx.doi.org/10.4043/30586-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Graue, Arne, Bjorn Kvamme, Bernard A. Baldwin, James Stevens, James J. Howard, Geir Ersland, Jarle Husebo, and David R. Zornes. "Magnetic Resonance Imaging of Methane - Carbon Dioxide Hydrate Reactions in Sandstone Pores." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 2006. http://dx.doi.org/10.2118/102915-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Kuznetsova, Tatiana, Bjo̸rn Kvamme, and Kathryn Morrissey. "An alternative for carbon dioxide emission mitigation: In situ methane hydrate conversion." In INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2009: (ICCMSE 2009). AIP, 2012. http://dx.doi.org/10.1063/1.4771807.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Kassim, Zamzila, Fadhli Hadana Rahman, and Bhajan Lal. "Dual Function Hydrate Inhibitor for Prevention of Hydrate in Methane and Carbon Dioxide System." In SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition. Society of Petroleum Engineers, 2019. http://dx.doi.org/10.2118/196461-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

White, Mark Daniel, and Bernard Peter McGrail. "Numerical Simulation of Methane Hydrate Production from Geologic Formations via Carbon Dioxide Injection." In Offshore Technology Conference. Offshore Technology Conference, 2008. http://dx.doi.org/10.4043/19458-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Maruyama, Shigenao, Koji Deguchi, and Atsuki Komiya. "Formation and Dissociation of Oceanic Methane Hydrate for a Low CO2 Emission Power Generation System." In ASME 2011 Power Conference collocated with JSME ICOPE 2011. ASMEDC, 2011. http://dx.doi.org/10.1115/power2011-55308.

Full text
Abstract:
Methane hydrate dissociation is studied using numerical and experimental approaches for a low carbon dioxide (CO2) emission power generation system utilizing methane hydrate. A novel power generation system has been proposed by authors, in which methane gas produced from oceanic methane hydrate reservoir by thermal stimulation method is used as fuels. The performance of the power generation system and the heat loss during the injection of hot seawater to the methane hydrate layer were investigated in previous study. However, the estimation of the methane gas production rate from the methane hydrate reservoir is necessary to evaluate the performance of whole system. In this study, we conducted the numerical simulation of methane hydrate reservoir. In order to evaluate the reaction rate of methane hydrate dissociation, the methane hydrate formation and dissociation experiment was conducted. The result of numerical simulation indicates the necessity of improvement of the production process to supply the heat of hot water effectively. From the experimental result, it comes to see that consideration of the scale effect of the methane hydrate construction is necessary to describe the dissociation rate.
APA, Harvard, Vancouver, ISO, and other styles
9

Garapati, Nagasree, Patrick McGuire, and Brian J. Anderson. "Modeling the Injection of Carbon Dioxide and Nitrogen into a Methane Hydrate Reservoir and the Subsequent Production of Methane Gas on the North Slope of Alaska." In Unconventional Resources Technology Conference. Society of Exploration Geophysicists, American Association of Petroleum Geologists, Society of Petroleum Engineers, 2013. http://dx.doi.org/10.1190/urtec2013-199.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Musakaev, N. G., M. K. Khasanov, and G. R. Rafikova. "Mathematical model of the methane replacement by carbon dioxide in the gas hydrate reservoir taking into account the diffusion kinetics." In XV ALL-RUSSIAN SEMINAR “DYNAMICS OF MULTIPHASE MEDIA” (DMM2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5027346.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Methane. Carbon dioxide. Hydrates"

1

McGrail, B. Peter, Herbert T. Schaef, Mark D. White, Tao Zhu, Abhijeet S. Kulkarni, Robert B. Hunter, Shirish L. Patil, Antionette T. Owen, and P. F. Martin. Using Carbon Dioxide to Enhance Recovery of Methane from Gas Hydrate Reservoirs: Final Summary Report. Office of Scientific and Technical Information (OSTI), September 2007. http://dx.doi.org/10.2172/929209.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Snowdon, L. R. Methane and carbon dioxide gas-generation kinetics, JAPEX/JNOC/GSC Mallik 2L-38 gas hydrate research well. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1999. http://dx.doi.org/10.4095/210772.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Klein, J. E. Effect of Carbon Dioxide on SAES(R) St909 Methane Cracking. Office of Scientific and Technical Information (OSTI), September 2002. http://dx.doi.org/10.2172/802625.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Jacobson, A. R., J. B. Miller, A. Ballantyne, S. Basu, L. Bruhwiler, A. Chatterjee, S. Denning, and L. Ott. Chapter 8: Observations of Atmospheric Carbon Dioxide and Methane. Second State of the Carbon Cycle Report. Edited by N. Cavallaro, G. Shrestha, R. Birdsey, M. A. Mayes, R. Najjar, S. Reed, P. Romero-Lankao, and Z. Zhu. U.S. Global Change Research Program, 2018. http://dx.doi.org/10.7930/soccr2.2018.ch8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Oldenburg, Curtis M., George J. Moridis, Nicholas Spycher, and Karsten Pruess. EOS7C Version 1.0: TOUGH2 Module for Carbon Dioxide or Nitrogen inNatural Gas (Methane) Reservoirs. Office of Scientific and Technical Information (OSTI), June 2004. http://dx.doi.org/10.2172/878525.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

K. A. M. Gasem, R. L. Robinson, and S. R. Reeves. Adsorption of Pure Methane, Nitrogen, and Carbon Dioxide and Their Mixtures on San Juan Basin Coal. Office of Scientific and Technical Information (OSTI), March 2002. http://dx.doi.org/10.2172/923254.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

M Gasem, K., R. Robinson, and S. Reeves. Adsorption of Pure Methane, Nitrogen, and Carbon Dioxide and Their Mixtures on San Juan Basin Coal. Office of Scientific and Technical Information (OSTI), March 2002. http://dx.doi.org/10.2172/923253.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Siegel, D. I. Mechanisms controlling the production and transport of methane, carbon dioxide, and dissolved solutes within a boreal peatland. Office of Scientific and Technical Information (OSTI), April 1992. http://dx.doi.org/10.2172/5448773.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Wang, Yifeng. Fundamental Understanding of Methane-Carbon Dioxide-Water (CH4-CO2-H2O) Interactions in Shale Nanopores under Reservoir Conditions. Office of Scientific and Technical Information (OSTI), February 2018. http://dx.doi.org/10.2172/1421590.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Wang, Yifeng. Fundamental Understanding of Methane-Carbon Dioxide-Water (CH4-CO2-H2O) Interactions in Shale Nanopores under Reservoir Conditions: Quarterly Report. Office of Scientific and Technical Information (OSTI), November 2017. http://dx.doi.org/10.2172/1410779.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Methane. Carbon dioxide. Hydrates' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography