Bibliografías temáticas / Production de CH4

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Literatura académica sobre el tema "Production de CH4"

Autor: Grafiati
Publicado: 7 de diciembre de 2024
Última modificación: 31 de julio de 2025

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Artículos de revistas sobre el tema "Production de CH4"

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Kumar, Pankaj, Dan Meyerstein, Amir Mizrahi, and Haya Kornweitz. "Investigation of the Adsorption and Reactions of Methyl Radicals on Transition Metal (M = Co, Ni, Pd, Pt) (111) Surfaces in Aqueous Suspensions." Molecules 30, no. 15 (2025): 3065. https://doi.org/10.3390/molecules30153065.

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The DFT method was used to evaluate the adsorption of methyl radicals and the evolution of ethane on the M(111) (M = Co, Ni, Pd, Pt) surfaces, eight metal atoms, in aqueous medium. A maximum of five and four radicals can be adsorbed on Co(111) and Ni(111), respectively, and six on Pd(111) and Pt(111) (top site). The ethane evolution occurs via the Langmuir–Hinshelwood (LH) or Eley–Rideal (ER) mechanisms. The production of ethane through the interaction of two adsorbed radicals is thermodynamically feasible for high coverage ratios on the four surfaces; however, kinetically, it is feasible at r
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Chen, Chung-Nan, Tzu-Tai Lee, and Bi Yu. "19. Improving the Prediction of Methane Production Determined by in Vitro Gas Production Technique for Ruminants." Annals of Animal Science 16, no. 2 (2016): 565–84. http://dx.doi.org/10.1515/aoas-2015-0078.

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Abstract Twelve feedstuffs (cereals, fibrous byproducts, protein-rich byproducts and forages) were determined for methane (CH4) production by the in vitro gas production technique (IVGPT) and were correlated with their chemical compositions to predict enteric CH4 originating from these feedstuffs in ruminants. Corn, soybean hull, soybean meal and corn silage generated the highest CH4 production from their respective categories. The average CH4 production of fibrous byproducts (44.6 ml/g DM incubated) was significantly higher than that of cereals (40.3 ml/g DM incubated), forages (33.3 ml/g DM
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Setyanto, P., Rosenani A.B., A. K. Makarim, Che Fauziah I., A. Bidin, and Suharsih Suharsih. "SOIL CONTROLLING FACTORS OF METHANE GAS PRODUCTION FROM FLOODED RICE FIELDS IN PATI DISTRICT, CENTRAL JAVA." Indonesian Journal of Agricultural Science 3, no. 1 (2016): 1. http://dx.doi.org/10.21082/ijas.v3n1.2002.1-11.

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Atmospheric methane (CH4) is recognized as one of the most important greenhouse gases. Methane, with some 15-30 times greater infrared-absorbing capability than CO2 on a mass basis, may account for 20% of anticipated global warming. Soils are one of the key factors, which play an important role in CH4 production and emission. However, data on CH4 emission from different soil types and the characteristics affecting CH4 production are lacking when compared to data on agronomic practices. This study was conducted to investigate the potential of CH4 production of selected soils in Java, and determ
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Setyanto, P., Rosenani A.B., A. K. Makarim, Che Fauziah I., A. Bidin, and Suharsih Suharsih. "SOIL CONTROLLING FACTORS OF METHANE GAS PRODUCTION FROM FLOODED RICE FIELDS IN PATI DISTRICT, CENTRAL JAVA." Indonesian Journal of Agricultural Science 3, no. 1 (2016): 1. http://dx.doi.org/10.21082/ijas.v3n1.2002.p1-11.

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Atmospheric methane (CH4) is recognized as one of the most important greenhouse gases. Methane, with some 15-30 times greater infrared-absorbing capability than CO2 on a mass basis, may account for 20% of anticipated global warming. Soils are one of the key factors, which play an important role in CH4 production and emission. However, data on CH4 emission from different soil types and the characteristics affecting CH4 production are lacking when compared to data on agronomic practices. This study was conducted to investigate the potential of CH4 production of selected soils in Java, and determ
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SAUVANT, D., S. GIGER-REVERDIN, A. SERMENT, and L. BROUDISCOU. "Influences des régimes et de leur fermentation dans le rumen sur la production de méthane par les ruminants." INRAE Productions Animales 24, no. 5 (2011): 433–46. http://dx.doi.org/10.20870/productions-animales.2011.24.5.3276.

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Ce travail s'appuie sur l'étude de plusieurs bases de données en vue d'extraire des modèles de prévision de la production de CH4 enfonction des régimes et des fermentations ruminales. La méthanogenèse est décrite en relation avec les principaux principes de la stoechiométrieet de la thermodynamique des fermentations ruminales. Il apparaît en particulier une relation étroite entre la productionde CH4 et le rapport des acides acétique/propionique du jus de rumen (Ac/Pr). Les variations du profil des AGV et de la productionde CH4 traduisent des phénomènes d'adaptation des microorganismes du rumen
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Tenorio, Sandy E., and Laura Farías. "Picoplanktonic methane production in eutrophic surface waters." Biogeosciences 21, no. 8 (2024): 2029–50. http://dx.doi.org/10.5194/bg-21-2029-2024.

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Abstract. Over the past decade, extensive research has delved into the methane (CH4) paradox, which involves aerobic CH4 production. We present noteworthy observations of CH4 oversaturation within the surface layer of the central Chile upwelling zone (36° S, 73° W) over two consecutive seasonal cycles (2018–2021). Complementing these observations, CH4 cycling experiments were conducted, utilizing distinct plankton fractions (encompassing the natural planktonic community, fractions < 150, < 3 and < 0.2 µm), in different productivity periods of phytoplanktonic production and composition
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Schroll, Moritz, Katharina Lenhart, Thomas Bender, et al. "Fungal Methane Production Controlled by Oxygen Levels and Temperature." Methane 3, no. 2 (2024): 257–75. http://dx.doi.org/10.3390/methane3020015.

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Saprotrophic fungi, key players in global carbon cycling, have been identified as methane (CH4) sources not yet accounted for in the global CH4 budget. This study, for the first time, explores the influence of oxygen (O2) and temperature on CH4 production by two fungi, Laetiporus sulphureus and Pleurotus sapidus. To explore the relationship between these parameters and fungal CH4 formation, we examined CH4 formation under varying O2 levels (0 to 98%) and temperatures (17, 27, and 40 °C) during fungal growth on pine wood, beech wood, and grass under sterile conditions. Our findings show that fu
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Zheng, Jianqiu, Taniya RoyChowdhury, Ziming Yang, Baohua Gu, Stan D. Wullschleger, and David E. Graham. "Impacts of temperature and soil characteristics on methane production and oxidation in Arctic tundra." Biogeosciences 15, no. 21 (2018): 6621–35. http://dx.doi.org/10.5194/bg-15-6621-2018.

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Abstract. Rapid warming of Arctic ecosystems accelerates microbial decomposition of soil organic matter and leads to increased production of carbon dioxide (CO2) and methane (CH4). CH4 oxidation potentially mitigates CH4 emissions from permafrost regions, but it is still highly uncertain whether soils in high-latitude ecosystems will function as a net source or sink for CH4 in response to rising temperature and associated hydrological changes. We investigated CH4 production and oxidation potential in permafrost-affected soils from degraded ice-wedge polygons on the Barrow Environmental Observa
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Heslop, J. K., K. M. Walter Anthony, A. Sepulveda-Jauregui, et al. "Thermokarst lake methanogenesis along a complete talik profile." Biogeosciences 12, no. 14 (2015): 4317–31. http://dx.doi.org/10.5194/bg-12-4317-2015.

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Abstract. Thermokarst (thaw) lakes emit methane (CH4) to the atmosphere formed from thawed permafrost organic matter (OM), but the relative magnitude of CH4 production in surface lake sediments vs. deeper thawed permafrost horizons is not well understood. We assessed anaerobic CH4 production potentials from various depths along a 590 cm long lake sediment core that captured the entire sediment package of the talik (thaw bulb) beneath the center of an interior Alaska thermokarst lake, Vault Lake, and the top 40 cm of thawing permafrost beneath the talik. We also studied the adjacent Vault Creek
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Heslop, J. K., K. M. Walter Anthony, A. Sepulveda-Jauregui, et al. "Thermokarst-lake methanogenesis along a complete talik profile." Biogeosciences Discussions 12, no. 6 (2015): 4865–905. http://dx.doi.org/10.5194/bgd-12-4865-2015.

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Abstract. Thermokarst (thaw) lakes emit methane (CH4) to the atmosphere formed from thawed permafrost organic matter (OM), but the relative magnitude of CH4 production in surface lake sediments vs. deeper thawed permafrost horizons is not well understood. We assessed anaerobic CH4 production potentials from various depths along a 590 cm long lake sediment core that captured the entire sediment package of the talik (thaw bulb) beneath the center of an interior Alaska thermokarst lake, Vault Lake, and the top 40 cm of thawing permafrost beneath the talik. We also studied the adjacent Vault Creek
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Tesis sobre el tema "Production de CH4"

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Helin, S., E. Arponen, J. Rajander, J. Aromaa, S. Johansson, and O. Solin. "Increased target volume and hydrogen content in [11C]CH4 production." Helmholtz-Zentrum Dresden - Rossendorf, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-166344.

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Introduction High starting radioactivity is usually advantageous for producing radiopharmaceuticals with high specific radioactivity. However, the [11C]CH4 yields from N2-H2 gas target fall short from theoretical amounts, as calculated from the cross section for the well-known 14N(p,α)11C nuclear reaction1. The beneficial effect of increased target chamber temperature on [11C]CH4 yields has recently been brought forward by us2 and others3. In addition to the temperature effect, our attention has also been on the hydrogen content factor. This study intends to examine the N2-H2 target performan
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Rêgo, de Vasconcelos Bruna. "Phosphates-based catalysts for synthetic gas (syngas) production using CO2 and CH4." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2016. http://www.theses.fr/2016EMAC0004/document.

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Parmi les produits issus de la biomasse ou de la transformation des déchets organiques, le CO2 et le CH4 sont des intermédiaires chimiques importants qui ont de forts impacts environnementaux. En effet, ils sont les principaux gaz responsables de l'effet de serre et leur atténuation est un enjeu majeur. Une voie intéressante pour la valorisation de ces gaz est le reformage à sec du méthane (DRM), qui convertit le CO2 et le CH4 en gaz de synthèse (mélange d'hydrogène et de monoxyde de carbone). Ce mélange peut être utilisé pour plusieurs applications telles que la production de méthanol, d'éthe
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GOMEZ, CAMACHO CARLOS ENRIQUE. "Enhancement of bioenergy production (H2 + CH4) from organic waste in anaerobic fermentation processes." Doctoral thesis, Politecnico di Torino, 2019. http://hdl.handle.net/11583/2738393.

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YAMASHITA, Hiroshi. "Numerical Study on NOx Production of Transitional Fuel Jet Diffusion Flame." The Japan Society of Mechanical Engineers, 2000. http://hdl.handle.net/2237/8999.

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Gregoire, Manon. "Valorisation catalytique du CO2 via l’hydrogénation pour la production de méthane." Electronic Thesis or Diss., Littoral, 2024. http://www.theses.fr/2024DUNK0713.

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Cette étude porte sur la valorisation du CO2 par le procédé de méthanation. Elle vise à développer des matériaux catalytiques efficaces et stables pour cette réaction. L’espèce active utilisée dans différentes familles de matériaux sera le nickel. Dans un premier temps, nous avons focalisé notre travail sur des catalyseurs au nickel supporté sur différentes silices afin d’étudier l’influence de la taille des particules. Le premier, Ni/SiO2 est le catalyseur classiquement utilisé de Ni sur de la silice commerciale avec des tailles de particules métalliques d’environ 12 nm assez élevées et situé
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Chhajed, Pawan. "Diffusion Characterization of Coal for Enhanced Coalbed Methane Production." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/645.

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This thesis explores the concept of displacement of sorbed methane and enhancement of methane recovery by injection of CO2 into coal, while sequestering CO2. The objective of this study was to investigate the diffusion behavior of San Juan Basin coal under single and competitive gas environments. The movement of gas in a coalbed reservoir starts in the coal matrix with diffusion towards the naturally occurring cleat network surrounding the matrix blocks. The gas production potential from coalbed reservoirs under different gas environments was, therefore, estimated by studying the diffusion beh
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Hao, Yushan. "Characterization of Peat Bog CO2 and CH4 Production Potentials in relation to Peat Physico-chemical Properties and Vegetation Composition." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1562338709421684.

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Filho, Adibe Luiz Abdalla. "Produção de gases, síntese microbiana pelo radiofósforo e digestibilidade do babaçu e mofumbo em dietas de ovinos." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/64/64133/tde-05052015-094343/.

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Quando a escassez de alimentos em pastagens naturais compromete a alimentação animal, os pequenos ruminantes podem incorporar em suas dietas as folhas de outras plantas, como árvores e arbustos, muitas delas ricas em metabólitos secundários como taninos e que ainda carecem de estudos acerca de seus efeitos na produtividade animal. Com o objetivo de verificar a possibilidade de utilização das folhas de Orbignya phalerata (Babaçu) e Combretum leprosum (Mofumbo) na alimentação e avaliar o efeito da inclusão na produção de ovinos, dois estudos foram conduzidos no Laboratório de Nutrição Animal do
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Wei, Tzu-Hsiang Biotechnology &amp Biomolecular Sciences Faculty of Science UNSW. "Transient production of biopharmaceutical proteins." Publisher:University of New South Wales. Biotechnology & Biomolecular Sciences, 2009. http://handle.unsw.edu.au/1959.4/43708.

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The creation of stable mammalian cell lines for biopharmaceutical production often require several months, and is unfavourable for the rapid production of multiple drug candidates for screening in the early stages of development. Biopharmaceutical production by transient transfection provides a possible alternative of quickly producing these early stage drug candidates. The Epi-CHO transient expression system, which consists of a Chinese hamster ovary (CHO) cell line (CHO-T) expressing the murine polyomavirus Large T-Antigen (LT), emonstrated enhanced transient recombinant protein production.
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Kunaparaju, Raj Kumar Biotechnology &amp Biomolecular Sciences Faculty of Science UNSW. "Epi-CHO, an episomal expression system for recombinant protein production in CHO cells." Publisher:University of New South Wales. Biotechnology & Biomolecular Sciences, 2008. http://handle.unsw.edu.au/1959.4/41499.

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The current project is to develop a transient expression system for Chinese Hamster Ovary (CHO) cells based on autonomous replication and retention of plasmid DNA. The expression system, named Epi-CHO comprises (1) a recombinant CHO-K1 cell line encoding the Polyoma (Py) virus large T-Antigen (PyLT-Ag), and (2) a DNA expression vector, pPy/EBV encoding the Py Origin (PyOri) for autonomous replication and encoding the Epstein-Barr virus (EBV), Nuclear Antigen-1 (EBNA-1) and EBV Origin of replication (OriP) for plasmid retention. The CHO-K1 cell line expressing PyLT-Ag, named CHO-T was adapted t
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Libros sobre el tema "Production de CH4"

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Batista, Gerónimo Alvarez. Le Che: Dans la bataiille-- de la production. Section des rotativistes du Syndicat général du Livre de Paris, 1994.

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author, Bernardelli Andrea 1962, ed. Che cos'è una serie televisiva. Carocci editore, 2017.

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Kimambo, Isaria N. Three decades of production of historical knowledge at Dar es Salaam. Dar es Salaam University Press, 1993.

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Chi, Myŏng-hyŏk. Chi Myŏng-hyŏk kyosu ŭi yŏnghwa yesul ŭi ihae. Chimmundang, 2002.

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Besten, Liesbeth den. Designers on jewellery: Twelve years of jewellery production by Chi ha paura ... ? National Design Centre, 2008.

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author, Chen Jie 1973, ed. Zhongguo liang shi sheng chan diao cha: Survey on China's grain production. Shanghai yuan dong chu ban she, 2014.

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Niu, Chunlong. "Chibi" ce xie: Zhen xiang, ji shi, hua xu = Red cliff. Lu Jiang chu ban she, 2008.

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Sŏng-ok, Yang, Pak, Hyŏn-jŏng (Researcher in dance and art), and Han'guk Yesul Yŏn'guso, eds. Chungyo muhyŏng munhwajae che 92-ho T'aep'yŏngmu kyoyuk pangbŏmnon. Han'guk Yesul Chonghap Hakkyo Han'guk Yesul Yŏn'guso, 2012.

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Qingyu, Wang. Zhi cha xue: Taiwan cha lei zhi zhi zao sheng chan = Tea making science : production and making of teas in Taiwan. Xin xue lin chu ban gu fen you xian gong si, 2018.

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Soy, Eloy Llevat. Mass production makes a better world!: Che fine ha fatto l'utopia fordista nella Torino contemporanea? LetteraVentidue, 2020.

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Capítulos de libros sobre el tema "Production de CH4"

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Brauner, Nadia, Gerd Finke, and Maurice Queyranne. "Production Planning." In Applications of Combinatorial Optimization. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118600283.ch4.

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Brauner, Nadia, Gerd Finke, and Maurice Queyranne. "Production Planning." In Applications of Combinatorial Optimization. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781119005384.ch4.

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Sarker, Bhaba R., Dennis B. Webster, and Thomas G. Ray. "Production Planning." In Mechanical Engineers' Handbook. John Wiley & Sons, Inc., 2006. http://dx.doi.org/10.1002/0471777463.ch4.

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Kumar, Virendra, Purnima Dhall, Rita Kumar, and Anil Kumar. "Bioconversion of Lignocellulosic Biomass for Bioethanol Production." In Biofuels Production. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118835913.ch4.

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Yeow, Show Kuan, and Wong Lai Peng. "Application of Ultrasound Pretreatment for Sludge Digestion." In Biogas Production. John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118404089.ch4.

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Guillet, Nicolas, and Pierre Millet. "Alkaline Water Electrolysis." In Hydrogen Production. Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527676507.ch4.

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Lerner, M., A. Vorozhtsov, Sh Guseinov, and P. Storozhenko. "Metal Nanopowders Production." In Metal Nanopowders. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527680696.ch4.

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He, Peng, and Hua Song. "Catalytic Hydrogen Production from Bioethanol." In Hydrogen Production Technologies. John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781119283676.ch4.

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Risco, Carlos A., and Mauricio Benzaquen. "Monitoring Health and Looking for Sick Cows." In Dairy Production Medicine. Blackwell Publishing Ltd., 2011. http://dx.doi.org/10.1002/9780470960554.ch4.

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Jongeneel, Roel, and Louis Slangen. "Sustainability and resilience of the dairy sector in a changing world." In Sustainable Dairy Production. John Wiley & Sons, 2013. http://dx.doi.org/10.1002/9781118489451.ch4.

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Actas de conferencias sobre el tema "Production de CH4"

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Nakhutin, Alexander, Nikita Popov, Vladimir Berdin, Andrey Mironov, Anastasia Uledova, and Daria Kozlova. "NATIONAL GREENHOUSE GAS EMISSION FACTORS AT OIL AND GAS CONDENSATE PRODUCTION AND TREATMENT FACILITIES IN RUSSIAN FEDERATION." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024v/3.2/s06.46.

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Accurate estimation of greenhouse gases in national inventory reports, submitted by countries every year under the UNFCCC and the Paris Agreement is an important task. Fugitive greenhouse gas emissions from oil production, gathering and treatment is a key category in the Russian national inventory report. Total emissions from this category accounted to more than 30 million tons of CO2 equivalent in 2021. Since in Russian inventory the default IPCC emission factors from these operations are used, in the framework of government project �Russian climate monitoring system� new country-specific CH4
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Valujeva, Kristine, Jovita Pilecka-Ulcugaceva, Kristaps Siltumens, Olga Skiste, and Inga Grinfelde. "TEMPORAL VARIATIONS IN GREENHOUSE GAS EMISSIONS FROM AGRICULTURAL SOILS." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/3.1/s13.39.

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Soil moisture, soil temperature, nutrient availability, and land use practices affect the GHG emissions from soils. In this study, the aim is to determine and analyse GHG emissions from agricultural soils in five monitoring sites. The mobile spectrophotometer Picarro G2508 is used for the quantification of N2O, CH4, and CO2 soil flux across five monitoring sites used for agricultural production during the growing seasons from 2017 to 2023. Findings reveal significant variations in GHG emissions across the monitoring sites. Specifically, the average N2O emissions at monitoring sites used form a
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Larsen, Jan, and Lisbeth Rischel Hilbert. "Investigation into under Deposit Corrosion in Halfdan Production Tubulars." In CORROSION 2014. NACE International, 2014. https://doi.org/10.5006/c2014-3746.

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Abstract Multifinger caliper runs in selected Halfdan producing wells have shown penetrations located in the top completions. Future mitigation requires identifying the factors controlling the corrosion process. The current mechanistic understanding is based on samples from retrieved tubing with slightly oxidized corrosion products. From these samples an attempt has been made to track back what chemistry prevailed when the tubing was in operation. The corrosion issues observed downhole in the producing wells may in some cases relate to partial coverage of iron sulfide film, but the typical imp
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Jadoon, Usman Khan, Ismael D�az, and Manuel Rodr�guez. "A Comparative Study of Aspen Plus and Machine Learning Models for Syngas Prediction in Biomass-Plastic Waste Co-gasification." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.174749.

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The co-gasification of biomass and plastic waste offers a promising pathway for sustainable syngas production, necessitating precise prediction of its composition to optimize efficiency. This study compares the performance of Aspen Plus models, including the thermodynamic equilibrium model (TEM) and restricted thermodynamic equilibrium model (RTM), with machine learning (ML) techniques, focusing on the support vector regression (SVR) for syngas prediction during steam and air co-gasification. Aspen Plus simulations provided valuable mechanistic insights, while the ML model demonstrated superio
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Chung, Hegwon, Minseong Park, and Jiyong Kim. "Preliminary Examination of the Biogas-to-Hydrogen Conversion Process." In Foundations of Computer-Aided Process Design. PSE Press, 2024. http://dx.doi.org/10.69997/sct.166239.

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Biogas is a promising energy source for sustainable hydrogen production due to its high concentration of CH4. However, determining the optimal process configuration is challenging due to the uncertainty of the fed biogas composition and the sensitivity of the operating conditions. This necessitates early-stage evaluation of the biomass-to-hydrogen process's performance, considering economics, energy efficiency, and environmental impacts. A data-driven model was introduced for early-stage assessment of hydrogen production from biogas without whole process simulation and optimization. The model
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Gambelli, Alberto Maria, Jessica Mario, and Giovanni Gigliotti. "PRODUCTION OF sI AND sII HYDRATES WITH BINARY MIXTURES CONTAINING CH4 AND LOWER CONCENTRATIONS OF C2H6/C3H8: POSSIBLE CONSEQENCES ON REPLACEMENT IN MARINE NATURAL DEPOSITS." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024v/3.2/s06.48.

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The most attractive option to recover methane trapped within natural gas hydrate reservoirs, consists of the so-called �replacement process�, mainly based on the contemporary injection of carbon dioxide during the mining process. If appropriately carried out, this process allows to improve the amount of methane recovered, preserve the crystalline hydrate cages and permanently store enough carbon dioxide to make this source definitively carbon neutral. For that reason, this process is widely studied worldwide. However, most of lab-scale experiments do not consider the presence of further small-
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Plennevaux, C., T. Cassagne, M. Bonis, et al. "Improving pH Prediction for High Pressure and High Temperature Applications in Oil and Gas Production." In CORROSION 2013. NACE International, 2013. https://doi.org/10.5006/c2013-02843.

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Abstract pH prediction represents a crucial step before selecting materials for use in sour oil and gas wells as regards weight loss corrosion and H2S cracking. Among the numerous parameters which determine the equilibrium pH, important ones are CO2 and H2S partial pressures (PCO2 and PH2S respectively), the total pressure, the ionic strength and the chemical composition of the solution, and the temperature. Most models used by oil and gas operators present a too narrow range of validity for these parameters, which makes them inappropriate for high pressure and high temperature (HPHT) fields o
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Kim, Donghyeon, Minseong Park, Donggeun Kang, Dongin Jung, Siuk Roh, and Jiyong Kim. "Potential of chemical looping for green hydrogen production from biogas: process design and techno-economic-environmental analysis." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.102795.

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Hydrogen (H2), as the promising alternative to fossil fuel-based energy carriers, faces the critical challenge of diversifying its sources and lowering production costs. Biogas, produced from organic waste, offers a renewable and carbon-neutral option for H2 production, but its high CO2 content requires a pre-separation process of CO2 from CH4 or specialized catalysts for use in existing reforming processes. Chemical looping reforming (CLR), as an advanced H2 production process, uses an oxygen carrier (OC) as the oxidant, allowing raw biogas to be used directly in the reforming process. Recent
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Bandeira, Merlin C. E., Rogaciano M. Moreira, Felipe S. Assunção, et al. "Reducing Conservatism on Corrosion Prediction to Oil Production and Transportation Based on Laboratory Test and Data Analysis Considering PH2S, PCO2, pH, Shear Stress and BSW." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-19407.

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Abstract The present work intends to build up the knowledge on oil effect on carbon steel corrosion rates by evaluating the results of Rotating Cage and Submerged Impingement Jet immersion tests carried at moderate pressures 2.5 MPa, 25 to 50 °C, shear stress from 25 to 175 Pa, in brines containing CO2, H2S and CH4 with two levels of water cut: 20 and 60%. The results indicate temperature effect is stronger on BSW 60% and that shear stress had no influence on CR. On environments with 0.001 MPa of H2S Partial pressure at 50 °C the CR were below 0.05 mm/y whereas without H2S CR were 4x higher. N
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Carrillo, E. J., J. Lizcano-Prada, V. Kafaro, D. Rodriguez-Vallejo, and A. Uribe-Rodr�guez. "Techno economical assessment of a low-carbon hydrogen production process using residual biomass gasification and carbon capture." In Foundations of Computer-Aided Process Design. PSE Press, 2024. http://dx.doi.org/10.69997/sct.153241.

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Aiming to mitigate the environmental impact derived from fossil fuels, we propose an integrated carbon capture-biomass gasification process is proposed to produce low-carbon hydrogen as an alternative energy carrier. The process begins with the pre-treatment of empty fruit bunches (EFB), involving grinding, drying, torrefaction, and pelletization. The resulting EFB pellet is then fed into a dual gasifier, followed by a catalytic cracking of tar and water gas shift reaction to produce syngas, aiming to increase its H2 to CO ratio. Subsequently, we explore two alternatives (DEPG and MEA) for syn
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Informes sobre el tema "Production de CH4"

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Gasim, Anwar, Lester Hunt, and Jeyhun Mikayilov. Methane Emissions Baseline Forecasts for Saudi Arabia Using the Structural Time Series Model and Autometrics. King Abdullah Petroleum Studies and Research Center, 2023. http://dx.doi.org/10.30573/ks--2023-dp08.

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Reducing methane (CH4) emissions is key to near-term efforts to limit global warming. CH4 is the second most abundant anthropogenic greenhouse gas (GHG) in the atmosphere after carbon dioxide (CO2). The production, transport, and consumption of fossil fuels, in addition to waste and agriculture, account for most anthropogenic CH4 emissions globally (IPCC 2018). Although CH4has only a 12-year lifetime in the atmosphere, it is 84 times more potent per ton than CO2 in a 20-year period and 28 times more potent in a 100-year period (IPCC 2018). The drastically stronger short-term potency of CH4 exp
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Asvapathanagul, Pitiporn, Leanne Deocampo, and Nicholas Banuelos. Biological Hydrogen Gas Production from Food Waste as a Sustainable Fuel for Future Transportation. Mineta Transportation Institute, 2022. http://dx.doi.org/10.31979/mti.2021.2141.

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In the global search for the right alternative energy sources for a more sustainable future, hydrogen production has stood out as a strong contender. Hydrogen gas (H2) is well-known as one of the cleanest and most sustainable energy sources, one that mainly yields only water vapor as a byproduct. Additionally, H2 generates triple the amount of energy compared to hydrocarbon fuels. H2 can be synthesized from several technologies, but currently only 1% of H2 production is generated from biomass. Biological H2 production generated from anaerobic digestion is a fraction of the 1%. This study aims
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3

Asvapathanagul, Pitiporn, Leanne Deocampo, and Nicholas Banuelos. Biological Hydrogen Gas Production from Food Waste as a Sustainable Fuel for Future Transportation. Mineta Transportation Institute, 2022. http://dx.doi.org/10.31979/mti.2022.2141.

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In the global search for the right alternative energy sources for a more sustainable future, hydrogen production has stood out as a strong contender. Hydrogen gas (H2) is well-known as one of the cleanest and most sustainable energy sources, one that mainly yields only water vapor as a byproduct. Additionally, H2 generates triple the amount of energy compared to hydrocarbon fuels. H2 can be synthesized from several technologies, but currently only 1% of H2 production is generated from biomass. Biological H2 production generated from anaerobic digestion is a fraction of the 1%. This study aims
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4

Asfaw, Etenesh. Greening Uzbekistan's Agriculture: Status and Prospects. TOSHKENT SHAHRIDAGI XALQARO VESTMINSTER UNIVERSITETI, 2022. https://doi.org/10.70735/gvho7274.

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Uzbekistan's agriculture exhibits main three environmental challenges. These are inefficient irrigation systems that consume 90% of the national water supply and lose 40% of the water during delivery, production systems that account for 15% of the total greenhouse gas(GHG) emissions, and severe land and soil degradation. Uzbekistan has several 'green' agriculture policy measures. The agri-food development strategy for 2019-2030 and the strategy for the green economy transition by 2030 are few. Implementation of the measures is, however, slow. Green agriculture that enhances efficient water use
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5

Demina, Regina. J/Ψ from chi Production in proton-antiproton Collisions at √s = 1.8 TeV. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/1372374.

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Boswell, Christopher Mark. Chi Meson Production in Proton - Antiproton Interactions at the Center-of-Mass Energy of 1.8-TeV. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/1372842.

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Chanprateep Napathorn, Suchada, and Tanapat Palaga. Expression of novel fusion proteins IL2/FU-MK-1-scFv in microorganism-host cells and its potential anti-tumor activities as a cytotoxic immunotherapy agent for FU-MK-1 expressing tumors. Chulalongkorn University, 2012. https://doi.org/10.58837/chula.res.2012.25.

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MK-1, the target molecule of FU-MK-1, is encoded by the GA733-2 gene, which is currently being used as a target in clinical trials for gastric, intestinal, and biliary cancer treatment with monoclonal antibodies. Here, two different arrangement of heavy-chain and K light-chain variable fusion gene, IL2/FUscFv(VK-VH) or IL2/FUscFv(VWVK), were constructed. The efficiency of protein expression in prokaryotic host expression system, Escherichia coli strains BL21(DE3)pLysS and Rosetta-gami B was compared with eukaryotic host expression system, Pichia pastoris strains GS115 and KM71H, for their abil
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Kowitt, M. S. Hadronic production of J/[psi] at large [chi][sub F] in 800 GeV p+Cu and p+Be collisions. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/6690251.

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Palmer, Guy H., Eugene Pipano, Terry F. McElwain, Varda Shkap, and Donald P. Knowles, Jr. Development of a Multivalent ISCOM Vaccine against Anaplasmosis. United States Department of Agriculture, 1993. http://dx.doi.org/10.32747/1993.7568763.bard.

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Anaplasmosis is an arthropod+borne disease of cattle caused by the rickettsia Anaplasma marginale and an impediment to efficient production of healthy livestock in both Israel and the United States. Our research focuses on development of a recombinant membrane surface protein (MSP) immunogen to replace current vaccines derived from the blood of infected cattle. The risk of widespread transmission of both known and newly emergent pathogens has prevented licensure of live blood-based vaccines in the U.S. and is a major concern for their continued use in Israel. Briefly, we accomplished the follo
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Núñez Zarantes, Víctor Manuel, Iván Javier Pastrana Vargas, Jorge Cadena Torres, and Eduardo Barragán Quijano. Sanjuanera 151 OMG : Variedad de algodón para el Caribe Seco con doble transgénesis. Corporación colombiana de investigación agropecuaria - AGROSAVIA, 2018. http://dx.doi.org/10.21930/agrosavia.folleto.2018.1.

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La variedad Sanjuanera-151 OMG es una variedad de fibra media con tolerancia al herbicida glifosato (gen cp4 epsps) y a algunas especies de insectos de importancia económica de la familia Lepidopterae (genes cry 1Ac y cry 2Ab), lo que permite obtener beneficios como reducción en el número de aplicaciones de insecticidas, mayor facilidad y flexibilidad para el control de malezas, eliminación de labores de control manual de malezas y beneficios ambientales, como disminución de la erosión del suelo y menores riesgos de contaminación ambiental por derivación de productos químicos. Para la obtenció
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