Academic literature on the topic 'Alkali potentials'

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 'Alkali potentials.'

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 "Alkali potentials"

1

Patil, S. H. "Interionic potentials in alkali halides." Journal of Chemical Physics 86, no. 1 (January 1987): 313–20. http://dx.doi.org/10.1063/1.452620.

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

Patil, S. H. "Alkali ion–inert gas potentials." Journal of Chemical Physics 86, no. 12 (June 15, 1987): 7000–7006. http://dx.doi.org/10.1063/1.452348.

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

Pardo, A., J. J. Camacho, J. M. L. Poyato, E. Martín, and D. Reyman. "Electronic potentials of alkali hydrides." Journal of Molecular Structure: THEOCHEM 166 (June 1988): 181–86. http://dx.doi.org/10.1016/0166-1280(88)80434-2.

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

Onwuagba, B. N. "Ionization potentials in alkali-metal clusters." Il Nuovo Cimento D 13, no. 4 (April 1991): 415–21. http://dx.doi.org/10.1007/bf02452126.

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

Sinistri, C., and C. Margheritis. "The Repulsive Potentials in Alkali Halide Molecules." Zeitschrift für Naturforschung A 48, no. 10 (October 1, 1993): 987–94. http://dx.doi.org/10.1515/zna-1993-1005.

Full text
Abstract:
Abstract On the basis of literature values of various spectroscopic quantities, the "experimental" five derivatives (1st to 5th) of the repulsive functions at the equilibrium distance were evaluated for the 20 alkali halide molecules, retaining the truncated Rittner model for the attractive forces. A self-con-sistency test showed that the used experimental values are reliable.Different analytical forms of the repulsive potential were then critically evaluated by comparison with the experimental derivatives. The repulsive functions were characterized by two, three, four or five empirical parameters. It has been shown that only functions with at least three parameters are sufficiently accurate to reproduce spectroscopic quantities such as ße and γe : the classical two parameter functions appeared too crude in this context.
APA, Harvard, Vancouver, ISO, and other styles
6

Belashchenko, D. K. "Embedded atom method potentials for alkali metals." Inorganic Materials 48, no. 1 (December 23, 2011): 79–86. http://dx.doi.org/10.1134/s0020168512010037.

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

Hess, Berk, and Nico F. A. van der Vegt. "Solvent-averaged potentials for alkali-, earth alkali-, and alkylammonium halide aqueous solutions." Journal of Chemical Physics 127, no. 23 (December 21, 2007): 234508. http://dx.doi.org/10.1063/1.2812547.

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

Housden, M. P., and N. C. Pyper. "Inter-ionic potentials in solid cubic alkali iodides." Journal of Physics: Condensed Matter 20, no. 8 (February 7, 2008): 085222. http://dx.doi.org/10.1088/0953-8984/20/8/085222.

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

Eliav, Ephraim, Marius J. Vilkas, Yasuyuki Ishikawa, and Uzi Kaldor. "Ionization potentials of alkali atoms: towards meV accuracy." Chemical Physics 311, no. 1-2 (April 2005): 163–68. http://dx.doi.org/10.1016/j.chemphys.2004.09.025.

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

Wang, Wenfeng, Xi Chen, and Zhi Pu. "Remote Sensing of CO2Absorption by Saline-Alkali Soils: Potentials and Constraints." Journal of Spectroscopy 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/425753.

Full text
Abstract:
CO2absorption by saline-alkali soils was recently demonstrated in the measurements of soil respiration fluxes in arid and semiarid ecosystems and hypothetically contributed to the long-thought “missing carbon sink.” This paper is aimed to develop the preliminary theory and methodology for the quantitative analysis of CO2absorption by saline-alkali soils on regional and global scales. Both the technological progress of multispectral remote sensing over the past decades and the conjectures of mechanisms and controls of CO2absorption by saline-alkali soils are advantageous for remote sensing of such absorption. At the end of this paper, the scheme for remote sensing is presented and some unresolved issues related to the scheme are also proposed for further investigations.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Alkali potentials"

1

Cox, A. "Calculation of third order elastic constants and photoelastic constants of alkali halides, and heat of formation and lattice parameter of binary alkali solid solutions." Thesis, University of Reading, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374033.

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

Griffiths, Catherine Ruth. "Theoretical studies of potential energy functions." Thesis, University of Sussex, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285349.

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

Sage, R. P. "Alkali rock complexes - carbonatites of Northern Ontario and their economic potential." Ottawa, 1986.

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

Breuer, John. "Cold elastic collisions of sodium and rubidium." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29690.

Full text
Abstract:
Thesis (M. S.)--Physics, Georgia Institute of Technology, 2010.
Committee Chair: Kennedy, Brian; Committee Member: Chapman, Michael; Committee Member: Zangwill, Andrew. Part of the SMARTech Electronic Thesis and Dissertation Collection.
APA, Harvard, Vancouver, ISO, and other styles
5

Byrne, Philip. "Mathematical modelling and experimental simulation of chlorate and chlor-alkali cells." Doctoral thesis, Stockholm, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3182.

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

Shon, Chang Seon. "Performance-based approach to evaluate alkali-silica reaction potential of aggregate and concrete using dilatometer method." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2694.

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

Zubaida, Nusrat. "Evaluation of the Potential of Residual Expansion of Concrete Affected by Alkali Aggregate Reaction." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40581.

Full text
Abstract:
One of the biggest challenges nowadays when dealing with critical AAR-affected infrastructure is to determine the induced expansion and damage attained to date in the different locations of the structure (i.e. diagnosis), to forecast its potential for further distress over time (i.e. prognosis), as well as its potential structural implications. There are a number of prognosis techniques that have been developed in the past decades which are currently being used worldwide. Yet, most of these approaches use residual expansion procedures based on accelerated laboratory tests performed on cores extracted from damaged structures. However, the majority of the results gathered from these tests have been found to be inaccurate when compared to the swelling behavior of the respective structure in the field and several potential issues have been raised with respect to the test setup and alkali leaching. This work aims to evaluate the efficiency of the various commonly used laboratory setups to assess the residual expansion of AAR-affected concrete. Three different setups (i.e. 38°C and 100% RH; 38°C and soaked in 1M NaOH and; 38°C and wrapped in 0.7M NaOH) and two types of reactive aggregates (fine and coarse) were selected for this research. Expansion is monitored over time and four damage degrees (i.e. 0.05%. 0.12%, 0.20% and 0.30%) are selected for further chemical, microscopic (DRI) and non-destructive tests. Results demonstrated that the 1 M NaOH protocol is much more aggressive than the other two setups. Furthermore, it provides the samples with a unique damage pattern that is different from field affected concrete. Finally, the proposed setup shows to be reliable in providing tested samples with similar deterioration mechanisms than expected. Yet, more efficiency in the reaction kinetics and understanding of the alkalis exchange from the system is still required.
APA, Harvard, Vancouver, ISO, and other styles
8

Potgieter, J. E. "Anorogenic alkaline ring-type complexes of the Damaraland Province, Namibia, and their economic potential." Thesis, Rhodes University, 1987. http://hdl.handle.net/10962/d1001567.

Full text
Abstract:
Anorogenic alkaline ring-type complexes form within continental plate settings. Alkaline magmatism is derived from the upper mantle, in which mantle metasomatism plays an important part, as well as from partial melting of the lower crust. Radial and concentric fractures develop during the ascent of alkaline magma. Extrusion of basic and felsic magma takes place along these fractures with felsic volcanics building-up central volcanoes. As a result of emptying of the magma chamber, the superstructure of the volcano collapses and a caldera is formed. During the caldera stage syenitic and granitic material are intruded into ring fractures. Alkaline ring-type complexes may be classified as (i) alkaline qranite and syenite-type and (ii) carbonatite and undersaturated-type. These ring-type complexes occur as distinct igneous provinces. Some major provinces occur in Brazil, Corsica, Namibia, Nigeria, Norway, Saudi-Arabia and Sudan. In Namibia the Damaraland igneous province is of Mesozoic aqe and it contains 15 alkaline ring-type complexes . These complexes are situated along north-eastern trends which correspond to transform directions of the South Atlantic. During the opening of the South Atlantic (Gondwana breakup) Pan-African age lineaments were reactivated which allowed emplacement of anorogenic alkaline magmatism. A zonation of alkaline granite and syenitetype in the west and carbonatite and undersaturated-type ring-complexes in the east correlates with down- and upwarp axes parallel to the line of Gondwana fragmentation. Alkali- and H⁺-metasomatism is related to the alkaline and syenite-type whereas alkali metasomatism (fenitization) is associated with carbonatite and undersaturated-type ring-complexes. Sn, W and Ta mineralization is associated with alkaline granites of some of the alkaline granite and syenite-type ring-complexes. Fe, F, PO₄ , Nb, Th, REE, Sr, Zn and Pb mineralization is associated with carbonatite complexes. Potential exists for: (i) porphyry Cu-Mo and epithermal-type (Au, Ag, Pt-metals, base metals) mineralization in the alkaline granite and syenite-type ring-complexes and (ii) disseminated Cu, Au, Aq and Pt-metals in carbonatite and undersaturated-type ring-complexes
APA, Harvard, Vancouver, ISO, and other styles
9

Jensen, Soren Ross. "Composition and biodegradation potential of polychlorinated alkane mixtures." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82604.

Full text
Abstract:
A Monte Carlo Model was developed to simulate the free-radical chlorination of n-alkanes by which polychlorinated alkane mixtures are produced. The model parameters were the relative reactivity of the hydrogen atoms on the alkane chain to chlorine free-radical substitution. The values of the parameters were determined by free-radical chlorination experiments; by interpolation of data from these experiments or from data in the literature. The result of the model is a complete characterization of the molecular composition of PCA mixtures of any carbon chain length and degree of chlorination. Properties of modeled PCA mixtures were in good agreement with properties of real PCA mixtures. This model represents the first published attempt to characterize polychlorinated alkane mixtures.
The substrate specificity of oxygenolytic dehalogenase enzymes was determined. Biodegradation experiments were performed to determine what specific arrangements of chlorine atoms on n-alkane carbon chains could be acted upon by the enzymes. Terminally substituted chlorinated n-alkanes were readily dehalogenated by Pseudomonas sp.273, which expresses the enzymes. Vicinal chlorine atoms on the carbon chain could not be removed by oxygenolytic dehalogenases. By combining the results from the Monte Carlo model and the biodegradation experiments, it was possible to generate an estimate for the upper limit to aerobic biodegradation.
APA, Harvard, Vancouver, ISO, and other styles
10

Hearn, Jason Elyot. "Potentials for calcium and strontium and their application to solids and clusters." Thesis, University of Sussex, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321466.

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

Books on the topic "Alkali potentials"

1

El-Tilib, Nouralla Mohamed. Potential alkali-silica reactivity of Sudanese aggregates. Portsmouth: Portsmouth Polytechnic, Dept. of Geology, 1992.

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

Fernandes, Isabel, Maria dos Anjos Ribeiro, Maarten A. T. M. Broekmans, and Ian Sims, eds. Petrographic Atlas: Characterisation of Aggregates Regarding Potential Reactivity to Alkalis. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-7383-6.

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

Tomar, O. S. Isabgol (Plantago ovata Forsk): A potential crop for saline irrigation & moderate alkali soils. Karnal: Central Soil Salinity Research Institute, 2005.

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

Stone, James R. Alkali metal rankine cycle boiler technology challenges and some potential solutions for space nuclear power and propulsion applications. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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

Atkinson, Daryl S. A critical review of British Standard 812, Part 123. Methods for the assessment of alkali-reactivity potential. Draft Section 123.1 Petrographical examination. [London]: Queen Mary College, 1987.

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

G, Lorenzi, ed. Petrographic atlas of the potentially alkali-reactive rocks in Europe. Bruxelles: Service géologique de Belgique, 2006.

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

Tumidajski, Peter Joseph. Potential measurement of the reactive metal chlorides in the alkali halide solutions. 1987.

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

H, Mitchell Roger, and Mineralogical Association of Canada, eds. Undersaturated alkaline rocks: Mineralogy, petrogenesis, and economic potential. Nepean, Ont: Mineralogical Association of Canada, 1996.

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

K, Misyavichios A., and United States. National Aeronautics and Space Administration., eds. Oxidation reduction potential of the CU(III)/CU(II) system in alkaline solutions. Washington, DC: National Aeronautics and Space Administration, 1988.

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

Alternative Concrete – Geopolymer Concrete. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901533.

Full text
Abstract:
Concrete is the most versatile, durable and reliable material and is the most used building material. It requires large amounts of Portland cement which has environmental problems associated with its production. Hence, an alternative concrete – geopolymer concrete is needed. The general aim of this book is to make significant contributions in understanding and deciphering the mechanisms of the realization of the alkali-activated fly ash-based geopolymer concrete and, at the same time, to present the main characteristics of the materials, components, as well as the influence that they have on the performance of the mechanical properties of the concrete. The book deals with in-depth research of the potential recovery of fly ash and using it as a raw material for the development of new construction materials, offering sustainable solutions to the construction industry.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Alkali potentials"

1

Bernal, Susan A., Pavel V. Krivenko, John L. Provis, Francisca Puertas, William D. A. Rickard, Caijun Shi, and Arie van Riessen. "Other Potential Applications for Alkali-Activated Materials." In Alkali Activated Materials, 339–79. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-7672-2_12.

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

Li, Zhenming, Shizhe Zhang, Xuhui Liang, Albina Kostiuchenko, and Guang Ye. "Cracking Potential of Alkali-Activated Concrete Induced by Autogenous Shrinkage." In RILEM Bookseries, 239–45. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-76551-4_22.

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

Fernandes, Isabel, Maarten A. T. M. Broekmans, Maria dos Anjos Ribeiro, and Ian Sims. "Introduction." In Petrographic Atlas: Characterisation of Aggregates Regarding Potential Reactivity to Alkalis, 1–7. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-7383-6_1.

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

Fernandes, Isabel, Helena Martins, Maria dos Anjos Ribeiro, Fernando Noronha, Maarten A. T. M. Broekmans, and Ian Sims. "Igneous Rocks." In Petrographic Atlas: Characterisation of Aggregates Regarding Potential Reactivity to Alkalis, 9–41. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-7383-6_2.

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

Fernandes, Isabel, Maarten A. T. M. Broekmans, Maria dos Anjos Ribeiro, and Ian Sims. "Sedimentary Rocks." In Petrographic Atlas: Characterisation of Aggregates Regarding Potential Reactivity to Alkalis, 43–101. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-7383-6_3.

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

Fernandes, Isabel, Maria dos Anjos Ribeiro, Maarten A. T. M. Broekmans, and Ian Sims. "Metamorphic Rocks." In Petrographic Atlas: Characterisation of Aggregates Regarding Potential Reactivity to Alkalis, 103–59. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-7383-6_4.

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

Fernandes, Isabel. "Characteristic Examples of Reactive Silica." In Petrographic Atlas: Characterisation of Aggregates Regarding Potential Reactivity to Alkalis, 161–72. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-7383-6_5.

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

Fernandes, Isabel. "Examples of ASR in Selected Rock Types." In Petrographic Atlas: Characterisation of Aggregates Regarding Potential Reactivity to Alkalis, 173–89. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-7383-6_6.

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

Fernandes, Isabel, Maria dos Anjos Ribeiro, and Ákos Török. "Study of Hungarian Rocks Regarding Potential Reactivity to Alkalis." In IAEG/AEG Annual Meeting Proceedings, San Francisco, California, 2018 - Volume 3, 91–94. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-93130-2_13.

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

Nariya, Snehal, and Marina G. Kalyuzhnaya. "Diversity, Physiology, and Biotechnological Potential of Halo(alkali)philic Methane-Consuming Bacteria." In Methanotrophs, 139–61. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-23261-0_5.

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

Conference papers on the topic "Alkali potentials"

1

Ivanov, A. B., V. A. Volkovich, D. A. Poskryakov, B. D. Vasin, and T. R. Griffiths. "Electrode potentials of tungsten in fused alkali chlorides." In PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2016): Proceedings of the III International Young Researchers’ Conference. Author(s), 2016. http://dx.doi.org/10.1063/1.4962594.

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

Mironov, Andrey, J. Eden, and William Goldshlag. "SPIN POLARIZATION SPECTROSCOPY OF ALKALI-NOBLE GAS INTERATOMIC POTENTIALS." In 72nd International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2017. http://dx.doi.org/10.15278/isms.2017.ri03.

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

Merritt, Jeremy M., Jiande Han, Terry Chang, and Michael C. Heaven. "Theoretical investigations of alkali metal: rare gas interaction potentials." In SPIE LASE: Lasers and Applications in Science and Engineering, edited by Steven J. Davis, Michael C. Heaven, and J. Thomas Schriempf. SPIE, 2009. http://dx.doi.org/10.1117/12.815155.

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

Zimmermann, Dieter, Markus Braune, and Dirk Schwarzhans. "Recent progress in the determination of interatomic potentials of alkali-argon systems." In SPECTRAL LINE SHAPES. ASCE, 1999. http://dx.doi.org/10.1063/1.58378.

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

Behmenburg, W., A. Ermers, and T. Woschnik. "Long range interaction potentials of excited alkali-rare gas systems from light scattering experiments." In Spectral line shapes. AIP, 1990. http://dx.doi.org/10.1063/1.39957.

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

Glushkov, A. V., O. Khetselius, E. Gurnitskaya, A. Loboda, E. Mischenko, Dong-Qing Wei, and Xi-Jun Wang. "Relativistic Quantum Chemistry of Heavy Elements: Interatomic potentials and Lines Shift for Systems “Alkali Elements-Inert Gases”." In THEORY AND APPLICATIONS OF COMPUTATIONAL CHEMISTRY—2008. AIP, 2009. http://dx.doi.org/10.1063/1.3108370.

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

Dolan, Ryan, Sudong Yin, and Zhongchao Tan. "Hydrothermal Gasification of Waste Biomass Under Alkaline Conditions." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-10610.

Full text
Abstract:
Hydrothermal gasification is a promising technology for the treatment of wet organic biomass, and as such, has been subject to significant research effort. It is well known that two groups of catalysts exhibit high activity for hydrothermal gasification—broadly classified as platinum group metals and alkali salts. In the present work, this effect is further investigated through a study of the synergistic effects of sodium carbonate and Pt/Al2O3 on gas yield from cellulose at 315°C. Results indicate that dilute alkali appears far more efficient in promoting gasification reactions in the presence of Pt/Al2O3. Potential mechanisms and a comparison with the alkaline degradation pathways of glucose are discussed.
APA, Harvard, Vancouver, ISO, and other styles
8

Mariaková, Diana, Zuzana Jirkalová, Kristina Fořtová, Tereza Pavlů, and Petr Hájek. "Potential alkali-silica reaction in recycled concrete." In SPECIAL CONCRETE AND COMPOSITES 2020: 17th International Conference. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0042424.

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

Wright, I. G., C. Leyens, and B. A. Pint. "An Analysis of the Potential for Deposition, Erosion, or Corrosion in Gas Turbines Fueled by the Products of Biomass Gasification or Combustion." In ASME Turbo Expo 2000: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0019.

Full text
Abstract:
Fuel gas produced by gasifying biomass feedstocks will be expected to meet the general specifications for corrosive and particulate impurities set by the gas turbine manufacturers before being approved for use. The extent to which impurities are present in the fuel gas will be a function of the process used to produce the gas, as well as the type of feedstock from which the gas is derived. Experiences from various biomass gasification trials and hot gas filtration testing to assess the types and amounts of impurities that are likely to be present in the delivered gas during normal operation of the gasification/hot gas cleanup process and upset conditions are reviewed. Overall, it appears that biomass fuels can be separated into two classes: those derived from grass-based biomass and those from wood. Of these, the grasses have the potential to be the more troublesome since they contain the largest amounts of alkalis and total solids and have a significant excess of chlorine over sulfur species. A possible mitigating factor is that it may be possible to lower the alkali metal species (Na + K) to levels considered acceptable by operating the filters at temperatures below 500°C. There is concern that larger amounts of particulate matter than allowed in current gas turbine fuel specifications may pass through the hot gas clean-up systems in biomass gasification processes. These particles may also carry condensed alkali deposits. Therefore, it is considered essential that detailed characterization of the size and type of these particles be obtained so that their potential to cause deposition, erosion, or corrosion problems can be better assessed.
APA, Harvard, Vancouver, ISO, and other styles
10

Rokni, Emad, Hsun Hsien Chi, and Yiannis A. Levendis. "In-Furnace Sulfur Capture by Co-Firing Coal With Alkali-Based Sorbents." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65549.

Full text
Abstract:
Over the last quarter of a century, since the 1990 US Clean Air Act Amendments were enacted the gaseous sulfur emission, in the form of sulfur dioxide, have been reduced [1] by a factor of 4, by switching to lower sulfur content coals, installation of flue gas desulfurization (FGD) sorbents or switching altogether to natural gas as a fuel. Penetration of alternative energy generation also has had a positive impact. However, current emissions of sulfur dioxide are still voluminous, amounting to 3,242,000 short tons annually in the USA [2]. As wet flue gas desulfurization is both real-estate- and capital-intensive, infurnace dry sorbent injection has been considered over the years to be a viable alternative. However there is still uncertainty on the best selection of the sorbents for particular coals and furnace operating conditions. This is particularly the case when it is economically attractive for the power-plant operator to burn locally-sourced high-sulfur coal, such as the case of Illinois bituminous coals. This manuscript presents experimental results on the reduction of sulfur oxide emissions from combustion of a high-sulfur content pulverized bituminous coal (Illinois #6 Macoupin). The coal particles were in the size range of 90–125 μm and were blended with dry calcium-, sodium-, potassium-, and magnesium-containing powdered sorbents at different proportions. The alkali/S molar ratios were chosen to be at stoichiometric proportions (Ca/S = 1, Mg/S = 1, Na2/S = 2, and K2/S = 2) and the effectiveness of each alkali or alkali earth based sorbent was evaluated separately. Combustion of coal took place in a drop-tube furnace, electrically-heated to 1400 K under fuel-lean conditions. The evolution of combustion effluent gases, such as NOx, SO2 and CO2 were monitored and compared among the different sorbent cases. The use of these sorbents helps to resolve the potential of different alkali metals for effective in-furnace sulfur oxide capture and possible NOx reduction. It also assesses the effectiveness of various chemical compounds of the alkalis, such as oxides, carbonates, peroxides and acetates.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Alkali potentials"

1

Daniel T. Schwartz, Bekki Liu, Marlina Lukman, Kavita M. Jeerage, William A. Steen, Haixia Dai, Qiuming Yu, and J. Antonio Medina. Potential Modulated Intercalation of Alkali Cations into Metal Hexacyanoferrate Coated Electrodes. Office of Scientific and Technical Information (OSTI), February 2002. http://dx.doi.org/10.2172/792792.

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

Schwartz, Daniel T. Potential Modulated Intercalation Of Alkali Cations Into Metal Hexacyanoferrate Coated Electrodes. Office of Scientific and Technical Information (OSTI), June 2000. http://dx.doi.org/10.2172/828572.

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

Schwartz, Daniel T. Potential Modulated Intercalation Of Alkali Cations Into Metal Hexacyanoferrate Coated Electrodes. Office of Scientific and Technical Information (OSTI), June 2001. http://dx.doi.org/10.2172/828574.

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

Schwartz, D. T. Potential-modulated intercalation of alkali cations into metal hexacyanoferrate coated electrodes. 1998 annual progress report. Office of Scientific and Technical Information (OSTI), June 1998. http://dx.doi.org/10.2172/13753.

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

Hydrology of Alkali Creek and Castle Valley Ridge coal-lease tracts, central Utah, and potential effects of coal mining. US Geological Survey, 1988. http://dx.doi.org/10.3133/wri874186.

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