Academic literature on the topic 'Environmentally friendly oxidizers'

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Journal articles on the topic "Environmentally friendly oxidizers"

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Paravan, Christian, Anwer Hashish, and Valerio Santolini. "Test Activities on Hybrid Rocket Engines: Combustion Analyses and Green Storable Oxidizers—A Short Review." Aerospace 10, no. 7 (2023): 572. http://dx.doi.org/10.3390/aerospace10070572.

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Hybrid rocket engines (HREs) offer a low-cost, reliable, and environmentally friendly solution for both launch and in-space applications. Hybrid propellants have been identified as green thanks to their use of non-toxic, non-carcinogenic oxidizers. Of particular relevance are storable oxidizers, namely high-concentration (≥90 wt.%) hydrogen peroxide (HP, H2O2) and nitrous oxide (N2O). This work provides a survey of experimental activities based on H2O2 and N2O for hybrid rocket propulsion applications. Open literature data are completed with original thermochemical calculations to support the
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Olena, Kositsyna, Varlan Kostiantyn, Dron Mykola, and Kulyk Oleksii. "Determining energetic characteristics and selecting environmentally friendly components for solid rocket propellants at the early stages of design." Eastern-European Journal of Enterprise Technologies 6, no. 6 (114) (2021): 6–14. https://doi.org/10.15587/1729-4061.2021.247233.

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This paper has investigated the possibility to theoretically calculate a value of the specific impulse for highly energetic compositions using only two parameters – the heat of the reaction and the number of moles of gaseous decomposition reaction products. Specific impulse is one of the most important energetic characteristics of rocket propellant. It demonstrates the level of achieving the value of engine thrust and propellant utilization efficiency. Determining the specific impulse experimentally is a complex task that requires meeting special conditions. For the stage of synthesis of
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Gańczyk-Specjalska, Katarzyna, Paulina Paziewska, Rafał Bogusz, Rafał Lewczuk, Katarzyna Cieślak, and Michał Uszyński. "Performance and Sensitivity Properties of Solid Heterogeneous Rocket Propellant Based on a Binary System of Oxidizers (PSAN and AP)." Processes 9, no. 12 (2021): 2201. http://dx.doi.org/10.3390/pr9122201.

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Solid heterogeneous rocket propellants (SHRP) containing ammonium perchlorate (AP) emit a lot of hydrogen chloride (HCl) during combustion, which poses various environmental issues and makes the detection of the rockets easier. Part of the AP can be replaced by ammonium nitrate (V) (AN), which does not lead to the production of HCl. AN is a commonly used environmentally friendly oxidizer, but it is not usually applied in SHRP due to its disadvantages. One of these disadvantages is a phase transition near room temperature, which causes the density change of AN. Three types of phase stabilized a
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Zhang, Xueli, and Xuedong Gong. "A computational study on new oxidizers as replacements for ammonium perchlorate: tetranitroacetimidic acid and tetranitroacetamide." Canadian Journal of Chemistry 95, no. 2 (2017): 199–206. http://dx.doi.org/10.1139/cjc-2016-0468.

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High energetic materials tetranitroacetimidic acid (TNAA) and tetranitroacetamide (NTNAA) with positive oxygen balance (OB = 30%) are highly potential replacements for ammonium perchlorate (AP). Tautomerization from TNAA to NTNAA is feasible, reflected by the activation energy of 160.2∼170.0 kJ/mol. No transition state appears on the C–NO2 bond breaking, which triggers pyrolysis of two compounds. The C–NO2 bond dissociation energies are 116.1∼167.2 kJ/mol and 120.4∼174.6 kJ/mol for TNAA and NTNAA, respectively. The chemical stabilities of TNAA and NTNAA are higher than that of the insensitive
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Kositsyna, Olena, Kostiantyn Varlan, Mykola Dron, and Oleksii Kulyk. "Determining energetic characteristics and selecting environmentally friendly components for solid rocket propellants at the early stages of design." Eastern-European Journal of Enterprise Technologies 6, no. 6 (114) (2021): 6–14. http://dx.doi.org/10.15587/1729-4061.2021.247233.

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This paper has investigated the possibility to theoretically calculate a value of the specific impulse for highly energetic compositions using only two parameters – the heat of the reaction and the number of moles of gaseous decomposition reaction products. Specific impulse is one of the most important energetic characteristics of rocket propellant. It demonstrates the level of achieving the value of engine thrust and propellant utilization efficiency. Determining the specific impulse experimentally is a complex task that requires meeting special conditions. For the stage of synthesis of new p
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Zarraonaindia, Iratxe, Xabier Simón Martínez-Goñi, Olaia Liñero, et al. "Response of Horticultural Soil Microbiota to Different Fertilization Practices." Plants 9, no. 11 (2020): 1501. http://dx.doi.org/10.3390/plants9111501.

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Environmentally friendly agricultural production necessitates manipulation of microbe–plant interactions, requiring a better understanding of how farming practices influence soil microbiota. We studied the effect of conventional and organic treatment on soil bacterial richness, composition, and predicted functional potential. 16S rRNA sequencing was applied to soils from adjacent plots receiving either a synthetic or organic fertilizer, where two crops were grown within treatment, homogenizing for differences in soil properties, crop, and climate. Conventional fertilizer was associated with a
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Gichovi, Juster, Hoang Thi Thuy Tran, JIhoon Seo, and Elizabeth J. Podlaha. "Examining Leucine As an Environmentally Friendly Corrosion Inhibitor for Cu and Co Chemical-Mechanical Planarization (CMP)." ECS Meeting Abstracts MA2023-01, no. 55 (2023): 2689. http://dx.doi.org/10.1149/ma2023-01552689mtgabs.

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Metal chemical-mechanical planarization (CMP) is a key step in semiconductor processing of microchips and devices. The slurries used in CMP contain abrasives, oxidizers, chelating agents, and corrosion inhibitors. Despite the desired removal of metal, corrosion inhibitors are used to protect the underlying metal features from aggressive corrosion, and to this end, azoles, such as benzotriazole (BTA), are the most commonly used corrosion inhibitor in Cu CMP,1-3 and Co CMP4-5 slurries, although it was recently found that the surface interaction between BTA and Co is weaker than BTA and Cu.6 When
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Berdugo-Clavijo, Carolina, Gabrielle Scheffer, Arindom Sen, and Lisa M. Gieg. "Biodegradation of Polymers Used in Oil and Gas Operations: Towards Enzyme Biotechnology Development and Field Application." Polymers 14, no. 9 (2022): 1871. http://dx.doi.org/10.3390/polym14091871.

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Linear and crosslinked polymers are commonly used in the oil and gas industry. Guar-derived polymers have been extensively utilized in hydraulic fracturing processes, and recently polyacrylamide and cellulose-based polymers have also found utility. As these polymers are used during various phases of the hydraulic fracturing process, they can accumulate at formation fracture faces, resulting in undesired filter cakes that impede oil and gas recovery. Although acids and chemical oxidizers are often added in the fracturing fluids to degrade or ‘break’ polymer filter cakes, the constant use of the
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Ochirkhuyag, Altantuya, Ulambayar Rentsennorov, Davaabal Batmunkh, et al. "Preparation of catalyst from natural montmorillonite mineral and its application in the synthesis of carbon nanosphere." Mongolian Journal of Chemistry 23, no. 49 (2022): 32–37. http://dx.doi.org/10.5564/mjc.v23i49.2430.

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In developed countries, nanoparticles derived from natural minerals and high-purity chemicals both are widely studied, while in developing countries like Mongolia, the natural minerals-based nanoparticles have more interest because of the low production cost and applicability of domestic natural minerals for their production. For the synthesis of natural mineral-based nanomaterials, it is important first to define the chemical composition and physical structure of local minerals and their possible processing route. We employed an environmentally friendly alkaline leaching procedure to recover
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Pakostova, Eva, and Anuradha Herath. "A Bioleaching Process for Sustainable Recycling of Complex Structures with Multi-Metal Layers." Sustainability 15, no. 19 (2023): 14068. http://dx.doi.org/10.3390/su151914068.

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Industrial waste is accumulating, while primary metal resources are depleting. Bioleaching has been shown to be a cost-effective and environmentally friendly approach to metal recovery from waste, but improved designs are needed for large-scale recycling. Metal components that are manufactured by electrodeposition over a mandrel can be difficult to recycle using conventional techniques due to their complex geometry and inner Ag coating. A sustainable biotechnology for separating Cu and Ag from waste electrodeposited components is presented. Two-step bioleaching experiments were performed, duri
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Dissertations / Theses on the topic "Environmentally friendly oxidizers"

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Hussien, Mohamed [Verfasser], and Thomas M. [Akademischer Betreuer] Klapötke. "Development and thermo-analytical studies of new environmentally friendly, high-performance and stable solid propellant formulations based on new high-energy dense oxidizers / Mohamed Hussien ; Betreuer: Thomas M. Klapötke." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2018. http://d-nb.info/1202011276/34.

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Book chapters on the topic "Environmentally friendly oxidizers"

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Li, Dong, Bozhou Wang, and Ying-lei Wang. "The Environmentally Friendly High-Energy Oxidizers for Solid Rocket Propellants." In Space Technology Library. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-62574-9_11.

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Sasaki, Keiko, and Kojo T. Konadu. "Biotechnological Approaches to Facilitate Gold Recovery from Double Refractory Gold Ores." In Biotechnology in Mining and Metallurgical Industry [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94334.

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Double refractory gold ore (DRGO) not only include ppt levels of gold grains locked in sulfide minerals but also a problematic amount of carbonaceous matter. This causes a significant recovery loss of gold during cyanidation because of the strong affinity of the Au(CN)2 − with the carbonaceous matter. Combustion decreases the carbonaceous matter content, but also emits pollutant gases like CO2, SO2 and As2O3. Therefore, environmentally-friendly solutions have been explored by using biotechnology. Due to the very small amount of the above targets in the ore, it is challenging to show evidential
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Fouad, Damiri, Yahya Bachra, Grouli Ayoub, et al. "A Novel Drug Delivery System Based on Nanoparticles of Magnetite Fe3O4 Embedded in an Auto Cross-Linked Chitosan." In Chitin and Chitosan - Physicochemical Properties and Industrial Applications [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94873.

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Recently, chitosan (CS) was given much attention as a functional biopolymer for designing various hydrogels for industrial, environmental and biomedical applications, but their biomedical use is limited due to the toxicity of the crosslinker agents. To overcome this inconvenience, we developed an auto cross-linked material based on a chitosan backbone that carries an amino and aldehyde moieties. This new drug delivery system (DDS) was designed by using oxidized chitosan (OCS) that crosslinks chitosan (CS). In the first part, a simple, rapid, low-cost and eco-friendly green method was introduce
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"Trials on the reduction of zinc content in Romanian blast furnace slag for use in the steel industry." In Book of Abstracts - RAD 2025 Conference. RAD Centre, Niš, Serbia, 2025. https://doi.org/10.21175/rad.abstr.book.2025.45.2.

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Blast furnace slag is a by-product of the smelting process. It consists of a complex mixture of fine particles of metal oxides, carbon, sulphur and other impurities with specific physico- chemical characteristics. The exact composition of blast furnace slag varies according to the raw material used (iron ore, coke, fluxes) and the specific metallurgical process technology. The main components are: iron oxides (Fe₂O₃, Fe₃O₄, FeO) - 30-50%, calcium and magnesium oxides (CaO, MgO) - 5-15%, silicon dioxide (SiO₂) - 5-15%, aluminum oxides (Al₂O₂O₃) - 2-8%, carbon (C) and sulfur compounds (S) - 5-20
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Conference papers on the topic "Environmentally friendly oxidizers"

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Schuber, Paul, Jun Su An, Chris Arceo, et al. "Novel Oxidized Sugar Compounds: A Cheap, Low Dose, Environmentally Friendly, Replacement for Triazine." In Unconventional Resources Technology Conference. American Association of Petroleum Geologists, 2020. http://dx.doi.org/10.15530/urtec-2020-2727.

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Grobelny, Marcin, Malgorzata Kalisz, Robert Mroczynski, and Magdalena Szymanska. "Novel Nanometer Thin Films On Magnesium Alloy Prepared By Ultra-Shallow Nitrogen Implantation Using PECVD Method." In 13th International Conference on Plasma Surface Engineering September 10 - 14, 2012, in Garmisch-Partenkirchen, Germany. Linköping University Electronic Press, 2013. http://dx.doi.org/10.3384/wcc2.431-434.

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The low density of magnesium alloys makes them especially attractive especially for the automotive, electronic and aeronautical industries. Unfortunately, magnesium alloys have a strong susceptibility to atmospheric, galvanic and pitting corrosion and need to be protected with anticorrosive coatings. Traditionally magnesium and magnesium alloys have been protected with chromium-based coatings with the consequent problem of pollution by Cr(IV) ions. The development of new corrosion resistant coatings, by using clean and environmentally friendly processes is very important and strategic for the
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Almubarak, T., M. I. Alabdrabalnabi, A. Albaiz, and M. Al Yami. "Polyols: A Green, Non-Toxic, High Temperature Stabilizer for Hydraulic Fracturing Fluids." In International Petroleum Technology Conference. IPTC, 2024. http://dx.doi.org/10.2523/iptc-24400-ms.

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Abstract High-temperature fracturing fluids are in demand as we explore deeper and lower permeability reservoirs. Fracturing fluid stabilizers are divided into three categories: crosslinking delay additives, pH buffers, and reducing agents. Current technologies pose risks due to toxicity concerns and their harmful environmental effects. Consequently, the industry is continuously pushing towards green solutions. This work showcases the use of low-calorie sweeteners such as polyols as an environmentally friendly fracturing fluid additive. The paper presents a guar derivative fracturing fluid sys
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Oh, Hyukjin, Kalyan Annamalai, and John Sweeten. "Reburning of Cattle Manure-Based Biomass With Coals in a Small Scale Boiler Burner Facility for NOx and Hg Reduction." In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44182.

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Reburning of cattle manure-based biomass (CB) with coals is performed to develop environmentally friendly thermo-chemical energy conversion technologies for NOx reductions and Hg captures and removals from existing pulverized coal-fired power plants. A small-scale (30 kWth) down-fired boiler burner facility has been used for burning most types of pulverized solid fuels including coal and biomass. Blends of CB and coals are used as reburn fuels. It has hypothesized that a major fraction of the fuel-N in the CB is released in the form of NH3 or urea. In the reburn process, therefore, it is belie
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Buie, C. R., S. Litster, and J. G. Santiago. "Physics of Pumping Methanol/Water Solutions for Fuel Cell Applications." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42579.

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Proton exchange membrane fuel cells are environmentally friendly energy conversion devices. A special class of PEMFCs, direct methanol fuel cells (DMFCs), oxidize liquid methanol solutions at the cell anode as opposed to hydrogen gas. The use of methanol as fuel makes DMFCs highly attractive for portable applications due to the high volumetric energy density of liquid methanol. Previous work has shown that electroosmotic (EO) pumps can be used to pump pure methanol to obtain relatively high flow rates per power in applications with minimal pressure loads. This study explores the unique aspects
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Oh, Hyukjin, Kalyan Annamalai, John M. Sweeten, Christopher Rynio, and Witold Arnold. "Combustion of Cattle Biomass as a Supplementary Fuel in a Small Scale Boiler Burner Facility for NOx and Mercury Reductions." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12626.

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Combustion of cattle biomass (CB) as a supplementary fuel has been proposed for reducing emissions of NOx, Hg, SO2, and nonrenewable CO2 in large coal-fired power plants. It has benefits to power industries for lowering coal consumption and fuel costs and to animal industries for disposing burdensome agricultural wastes from large animal feeding operations. In order to develop environmentally friendly thermo-chemical energy conversion technologies that can utilize CB for NOx and Hg reductions in existing coal-fired power plants, co-firing and reburning experiments involving CB and coal were pe
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Yang, Ruomiao, Yuchao Yan, Juan Ou, Zhentao Liu, and Jinlong Liu. "Application of Argon Circulation to Investigate Fuel Nitrogen Oxides Emission Characteristics of Ammonia Spark Ignition Engines." In 2023 JSAE/SAE Powertrains, Energy and Lubricants International Meeting. Society of Automotive Engineers of Japan, 2023. http://dx.doi.org/10.4271/2023-32-0107.

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<div class="section abstract"><div class="htmlview paragraph">Compared to fossil fuels, ammonia is an environmentally friendly, cost-effective, and readily available fuel that carries hydrogen. It is expected to play a crucial role in the development of carbon-neutral internal combustion engines for the next generation. However, a significant challenge arises due to the presence of nitrogen in both the fuel and air, leading to the complex generation of intertwined thermal and fuel-based nitrogen oxides (NOx) during ammonia combustion. To gain a deeper understanding of NOx emission
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