Relevant bibliographies by topics / Alkaline reaction environment

Contents

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

Academic literature on the topic 'Alkaline reaction environment'

Author: Grafiati
Published: 11 January 2025

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Journal articles on the topic "Alkaline reaction environment"

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Nikolaychuk, P. A. "Determination of Partial Reaction Orders of the Reduction of Potassium Permanganate by Ethanol in Various Environments." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 3 (108) (June 2023): 118–30. http://dx.doi.org/10.18698/1812-3368-2023-3-118-130.

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A spectrophotometric kinetic study of the reaction of the potassium permanganate reduction by excess ethanol in acidic, neutral and alkaline environments was performed. The reaction mixtures were prepared from the solutions of potassium permanganate of different concentrations (0.0004, 0.001 and 0.002 М) and either the solutions of sulphuric acid (1, 3 and 10 %), water, or the solutions of sodium hydroxide (0.01, 0.04 and 0.1 М). The kinetic curves were recorded with the spectrophotometer at the wavelengths of 525 nm (in acidic environment), 400 nm (in neutral environment) and 605 nm (in alkal
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Reddy, K. Chiranjeevi, and Kolluru V. L. Subramaniam. "Quantitative phase analysis of slag hydrating in an alkaline environment." Journal of Applied Crystallography 53, no. 2 (2020): 424–34. http://dx.doi.org/10.1107/s1600576720001399.

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An X-ray diffraction (XRD)-based evaluation of the crystalline and amorphous phases in slag hydrating in an alkaline environment is presented. A method is developed for the quantification of the amorphous phases present in hydrating slag in a sodium hydroxide solution. In hydrating slag, the amorphous reaction product is identified as calcium aluminosilicate hydrate. A water-soluble sodium-based amorphous reaction product is also produced. The XRD-based quantification method relies on the direct decomposition of the XRD intensity pattern of the total amorphous phase present in partially hydrat
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Tutolo, Benjamin M., Robert Perrin, Rachel Lauer, et al. "Groundwater-Driven Evolution of Prebiotic Alkaline Lake Environments." Life 14, no. 12 (2024): 1624. https://doi.org/10.3390/life14121624.

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Alkaline lakes are thought to have facilitated prebiotic synthesis reactions on the early Earth because their modern analogs accumulate vital chemical feedstocks such as phosphate through the evaporation of dilute groundwaters. Yet, the conditions required for some building block synthesis reactions are distinct from others, and these conditions are generally incompatible with those permissible for nascent cellular function. However, because current scenarios for prebiotic synthesis have not taken account of the physical processes that drive the chemical evolution of alkaline lakes, the potent
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Wei, Shaohua, Hongpeng Zhang, Haiyan Zhu, Lianyuan Wang, Jing Liang, and Zhenxing Cheng. "Study on detoxification property of alkaline-modified MoO42--H2O2 decontaminants against PhSMe under subzero environment." E3S Web of Conferences 267 (2021): 02061. http://dx.doi.org/10.1051/e3sconf/202126702061.

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The decontaminant activated by MoO42- (MoO42--H2O2) suitable for subzero environment shows strong oxidizing ability and weak nucleophilicity due to its acid. In this paper, in order to improve nucleophilicity and retain oxidation of MoO42--H2O2 as far as possible, NH3 and NaOH were used as alkaline modifiers, and PhSMe was used as a simulant of HD to study the oxidation rate and products of sulfides by alkaline-modified MoO42--H2O2 below zero. Results showed that the reaction rate constants decreased with the increase of pH in both NH3 and NaOH modified MoO42--H2O2 at -20°C, and the relative r
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Koyama, M., Y. Amano, S. Liu, and T. Ishimoto. "Reaction Mechanism of Ethanol Oxidation over Gold Catalyst under Alkaline Environment." ECS Transactions 50, no. 2 (2013): 1907–12. http://dx.doi.org/10.1149/05002.1907ecst.

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Zhao, Wan, Hongshuai Cao, Liting Ruan, Shaoying He, Zhiai Xu, and Wen Zhang. "High-performance self-supporting AgCoPO4/CFP for hydrogen evolution reaction under alkaline conditions." RSC Advances 12, no. 25 (2022): 15751–58. http://dx.doi.org/10.1039/d2ra02621j.

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Krnel, Kristoffer, Goran Dražič, and Tomaž Kosmač. "Degradation of AlN Powder in Aqueous Environments." Journal of Materials Research 19, no. 4 (2004): 1157–63. http://dx.doi.org/10.1557/jmr.2004.0150.

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The reactivity of AlN powder in an aqueous environment was studied by measuring the pH and the temperature during the hydrolysis of the powder at room and elevated temperatures. The influences of the powder concentration and the starting pH of the slurry were also investigated. The results of the measurements at room temperature show that there is an incubation time before the start of the AlN hydrolysis reactions. Once this incubation time is over, the pH and the temperature of the slurry start to increase, indicating the onset of the reactions. A higher starting temperature not only speeds u
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Mendonça Inocêncio, Carlos Victor Mendonça, Claudia Morais, and Boniface Kokoh. "Transition Metal Sulfide-Based Electrocatalysts for Hydrogen Evolution Reaction in Alkaline Environment." ECS Meeting Abstracts MA2021-01, no. 47 (2021): 1922. http://dx.doi.org/10.1149/ma2021-01471922mtgabs.

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Fu, Luhong, Shupeng Wang, Junlin Cai, Hongpu Huang, Fulin Yang, and Shuifen Xie. "Recent advances in platinum-group-metal based electrocatalysts for alkaline hydrogen oxidation reaction." Chemical Synthesis 3, no. 4 (2023): 53. http://dx.doi.org/10.20517/cs.2023.53.

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The reaction kinetics of hydrogen oxidation reactions (HOR) unfavorably decreases by 2~3 orders of magnitude under alkaline conditions, even on the most active platinum-group-metal (PGM) electrocatalysts. This sticky problem severely restricts the efficiency and commercialization of anion-exchange membrane fuel cells (AEMFCs). So far, no other material has HOR electrocatalytic performance comparable to PGM-based electrocatalysts. Forced by the scarce reserves and high prices of PGMs, it is significant to elaborately design and synthesize PGM-based electrocatalysts with ultimately atomic utiliz
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An, Lingyun, Chenggong Chang, Fengyun Yan, and Jianhong Peng. "Study on the Deterioration Mechanism of Magnesium Oxychloride Cement under an Alkaline Environment." Materials 16, no. 17 (2023): 5924. http://dx.doi.org/10.3390/ma16175924.

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The deterioration process and deterioration mechanism of magnesium oxychloride cement (MOC) in an alkaline environment were studied using a scanning electron microscope (SEM), an X-ray diffractometer (XRD), a Fourier transform infrared spectrometer (FT-IR) and a micro-electro-hydraulic servo pressure testing machine to investigate the effects of soaking time in 10 wt.% NaOH solution on the macro- and micro-morphology, phase composition and compressive strength of MOC samples. The results show that the deterioration of MOC samples under an alkaline environment is mainly caused by the alkaline e
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Dissertations / Theses on the topic "Alkaline reaction environment"

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Delugeau, Lou. "Étude de l'action d'une bilirubine oxydase sur la lignine Kraft en milieu alcalin : caractérisations et étude de modèles." Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0363.

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La lignine est le biopolymère aromatique le plus abondant sur Terre, mais son hétérogénéité et sa faible solubilité dans les solvants usuels en limitent la valorisation. Cependant, de nombreux efforts de recherche se concentrent sur la valorisation enzymatique de la lignine. Dans ce travail, une fraction de lignine Kraft soluble dans l'eau à pH neutre a été obtenue après traitement enzymatique par la bilirubine oxydase (BOD). La BOD est une enzyme oxydase multicuivre active à pH 10, où la lignine Kraft est soluble. Cette fraction soluble obtenue est utilisée par un partenaire du projet pour fi
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Zhang, Yuntao. "Effect of calcium-silicon ratio on the expansion of mortar bars due to alkali-silica reaction." Scholarly Commons, 2014. https://scholarlycommons.pacific.edu/uop_etds/222.

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In this experiment, mortar bars were prepared with three kinds of industrial solid waste and two kind of aggregates. Positive correlation between expansion induced by ASR and C/S ratio was obtained from the experiment result. Expansion of specimens prepared with standard sand and three cementitious materials increased with curing going on, and had expansion at the 14th day less than 0.1%. Expansion of mortar bars prepared with standard sand and cement increased in a linear way and the expansion at the 14th day was 0.195%. Expansion induced by ASR doesn't exhibit a positive correlation with C/S
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Creazzo, Fabrizio. "Oxygen evolution reaction at cobalt oxides/water interfaces : heterogeneous electrocatalysis by DFT-MD simulations & metadynamics Ab initio molecular dynamics study of an aqueous NaCl solution under an electric field Ionic diffusion and proton transfer in aqueous solutions of alkali metal salts Ionic Diffusion and Proton Transfer in Aqueous Solutions under an Electric Field: State-of-The-Art Ionic diffusion and proton transfer of MgCl2 and CaCl2 aqueous solutions: an ab initio study under electric field DFT-MD of the (110)-Co 3 O 4 cobalt oxide semiconductor in contact with liquid water, preliminary chemical and physical insights into the electrochemical environment Enhanced conductivity of water at the electrified air–water interface: a DFT-MD characterization Ions tune interfacial water structure and modulate hydrophobic interactions at silica surfaces." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASE012.

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Dans cette thèse, des simulations DFT-MD couplées à des techniques inno-vantes de métadynamique, sont appliquées pour acquérir une compréhensionglobale des interfaces aqueuses d'oxyde de cobalt Co3O4 et CoO(OH) dansla catalyse de la réaction d'évolution de l'oxygène (OER), et ainsi éventuellement aider à la conception de nouveaux catalyseurs basés sur des matériaux non précieux, un domaine clé de la recherche scientifique et technologique, particulièrement important pour l'économie de l'hydrogène, pour les technologies vertes dans une période de temps avec une demande toujours plus croissantee
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Jye, Luo I., and 羅一傑. "Study of Environmental Effects on Using Pozzolan to Inhibit Alkali-Aggregate Reaction in Concrete." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/74774754159073438864.

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碩士<br>國立中央大學<br>土木工程研究所<br>87<br>This study is to evaluate the environmental effects on inhibition of alkali-aggregate reaction (AAR) by using fly ash and slag to replace a portion of cement and lithium hydroxide. Reactive aggregate, cement adjusted to have different alkali content, and replacement of different portion of cement by fly ash and slag were mixed to make 2.5×2.5×28.5cm concrete prisms. After 28 days initial curing, the prisms were cured in five different environments including containers with 100% relative humidity, soaked in 2.1%, 3.5%, and 4.9% NaCl solutions, as well as in 1N N
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Book chapters on the topic "Alkaline reaction environment"

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Bi, Songhu, Zhen Geng, Liming Jin, Mingzhe Xue, and Cunman Zhang. "Porous Heterogeneous Sulfide Nickel/Nickel Iron Alloy Catalysts for Oxygen Evolution Reaction of Alkaline Water Electrolysis at High Current Density." In Proceedings of the 10th Hydrogen Technology Convention, Volume 1. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-8631-6_13.

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AbstractAlkaline water electrolysis is the important pathway for the green hydrogen production, where oxygen evolution reaction (OER) is the rate-limiting step due to the sluggish reaction kinetics. Transition metal heterogeneous catalyst is the kind of important OER catalyst for alkaline water electrolysis due to its good performance, low price and environmental friendliness. In this work, the porous sulfide nickel@nickel iron alloy catalyst (i.e. NM/NS@Ni3Fe) is prepared by the designed high-temperature vulcanization and multi-step electrodeposition method. The NM/NS@Ni3Fe catalyst exhibits an outstanding OER performance in an alkaline environment, with a low potential of 1.53 V at high current density of 1000 mA cm−2 and a low Tafel slope of 89 mV dec−1. The excellent OER performance is attributed to the unique electronic structure of Ni3S2/Ni3Fe heterogeneous interface and the catalyst layer with porous structure. The results indicate that Ni3S2 provides good electronic conductivity and the low electronegativity S atoms increase the formation of oxygen vacancies, which effectively improves the OER performance. In addition, the hydrophilic and porous structure of the electrode facilitates bubbles release and electrolyte flow at high current density. It provides the guidance for the design of porous heterogeneous OER catalysts with good-performance.
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Provis, John L., Syet Li Yong, and Jannie S. J. van Deventer. "Characterising the Reaction of Metakaolin in an Alkaline Environment by XPS, and Time- and Spatially-Resolved FTIR Spectroscopy." In RILEM Bookseries. Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-9939-3_37.

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Martin, L., P. Thomas, P. De Silva, and V. Sirivivatnanon. "Role of Aggregate Reactivity, Binder Composition, and Curing Temperature on the Delayed Ettringite Formation and Associated Durability Loss in Concrete." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3330-3_11.

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AbstractThe durability of concrete is critical to its worldwide use as a structural material for buildings and infrastructure, with the lifetime service of concrete greatly affecting its economic, environmental, and social costs. Causes of durability loss in some concrete structures can be attributed to the alkali–silica reaction (ASR) and delayed ettringite formation (DEF). Both are chemical reactions that have the potential to cause expansion and strength loss in affected elements. Significant overlap exists in the factors contributing to ASR and DEF in concrete structures, with widely reported evidence of deleterious DEF frequently occurring in conjunction with mild or moderate ASR. For precast concrete, experiments in mortars have provided limits in the alkali and sulfate content of the binder and maximum curing temperatures used to minimize DEF risk. The role of other constituents in concrete specimens, notably the aggregate, has been overlooked. We investigated the role of reactive aggregates and ASR in the susceptibility of concrete to deleterious DEF.
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Schaaf, W., M. Weisdorfer, and R. F. Huettl. "Forest Soil Reaction to Drastic Changes in Sulphur and Alkaline Dust Deposition in Three Scots Pine Ecosystems in Northeast Germany." In Atmospheric Environmental Research. Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-58382-7_4.

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Feng, Xiao Xin, and Nai Qian Feng. "Mechanism of Using Mineral Admixtures in Concrete to Suppress Alkali-Silica Reaction." In Environmental Ecology and Technology of Concrete. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-983-0.111.

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Hao, Ting Yu. "Inspection and Analysis of Prestressed Concrete Girders Deteriorated by Alkali-Silica Reaction." In Environmental Ecology and Technology of Concrete. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-983-0.131.

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Peña, Rosaura, Lourdes Hurtado, Rubi Romero, and Reyna Natividad. "Absorption and reaction of CO2 in capillaries." In CIERMMI Women in Science Engineering and Technology TXV. ECORFAN, 2021. http://dx.doi.org/10.35429/h.2021.6.51.74.

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The process of carbon dioxide (CO2) reduction to value-added chemicals is being extensively studied worldwide. The main purpose is to decrease emissions to the environment that are associated with global warming, as well as the creation of renewable and sustainable energy sources. In the aforementioned process, the absorption of CO2 is of paramount importance as well as the reactor where the CO2 conversion takes place. In this context, the objective of this chapter is to present and analyze the results of the CO2 absorption in alkaline solutions in capillary reactors. A hydrodynamic study is included in order to establish the operational window of liquid and gas velocities in order to achieve the Taylor flow regime. All experiments were conducted in a capillary reactor (dc = 3 mm). The studied variables were temperature, NaOH concentration (0-0.75 M) and capillary length (300 and 100 mm). It was found that the volumetric mass transfer coefficient of the absorption of CO2 in water increases when the temperature decreases, while the CO2 absorption in NaOH solutions increases directly with temperature. By means of the Ha number, it was concluded that the mass transfer controlled the absorption process when using alkaline solutions.
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Atkins, Peter. "Fasteners: Acid Catalysis." In Reactions. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199695126.003.0022.

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I explained the general basis of catalysis in Reaction 11, where I showed that it accelerated a reaction by opening a new, faster route from reactants to products. One of the ways to achieve catalysis in organic chemistry is to carry out a reaction in an acidic or basic (alkaline) environment, and that is what I explore here. In Reaction 27 you will see the enormous importance of processes like this, not just for keeping organic chemists productive but also for keeping us all alive; I give a first glimpse of that later in this section too. Various kinds of acid and base catalysis, sometimes both simultaneously, are going on throughout the cells of our body and ensuring that all the processes of life are maintained; in fact they are the very processes of life. I deal with acid catalysis in this section and base catalysis in the next. The point to remember throughout this section is that an acid is a proton donor (Reaction 2) and a proton is an aggressive, nutty little centre of positive charge. If a proton gets itself attached to a molecule, it can draw electrons towards itself and so expose the nuclei that they formerly surrounded. That is, a proton can cause the appearance of positive charge elsewhere in the molecule where the nuclei shine through the depleted fog of electrons. Because positive charge is attracted to negative charge, one outcome is that a molecule may be converted into a powerful electron-sniffing electrophile (Reaction 16). Another way of looking at the outcome of adding a proton is to note that a C atom with a positive charge is a target for nucleophilic missile attack (Reaction 15). Therefore, if a proton draws the electron cloud away from a nearby atom, then its presence is like a fifth-column agent preparing a target for later attack. Let’s shrink and watch as some acid is added to a molecule that contains a –CO– group, such as acetic acid. The protons provided by the added acid are riding on water molecules, as H3O+ ions, and arrive in the vicinity of the acetic acid molecule.
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Bethke, Craig M. "Evaporation." In Geochemical Reaction Modeling. Oxford University Press, 1996. http://dx.doi.org/10.1093/oso/9780195094756.003.0022.

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The process of evaporation, including transpiration (evaporation from plants), returns to the atmosphere more than half of the water reaching the Earth’s land surface; thus, it plays an important role in controlling the chemistry of surface water and groundwater, especially in relatively arid climates. Geochemists study the evaporation process to understand the evolution of water in desert playas and lakes as well as the origins of evaporite deposits. They also investigate environmental aspects of evaporation (e.g., Appelo and Postma, 1993), such as its effects on the chemistry of rainfall and, in areas where crops are irrigated, the quality of groundwater and runoff. To model the chemical effects of evaporation, we construct a reaction path in which H2O is removed from a solution, thereby progressively concentrating the solutes. We also must account in the model for the exchange of gases such as CO2 and O2 between fluid and atmosphere. In this chapter we construct simulations of this sort, modeling the chemical evolution of water from saline alkaline lakes and the reactions that occur as seawater evaporates to desiccation. We choose as a first example the evaporation of spring water from the Sierra Nevada mountains of California and Nevada, USA, as modeled by Garrels and Mackenzie (1967). Their hand calculation, the first reaction path traced in geochemistry (see Chapter 1), provided the inspiration for Helgeson’s (1968 and later) development of computerized methods for reaction modeling. Garrels and Mackenzie wanted to test whether simple evaporation of groundwater discharging from the mountains, which is the product of the reaction of rainwater and CO2 with igneous rocks, could produce the water compositions found in the saline alkaline lakes of the adjacent California desert. They began with the mean of analyses of perennial springs from the Sierra Nevada (Table 18.1). The springs are Na-Ca-HCO3 waters, rich in dissolved silica.
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Ebrahimi, Eisa, and Mohammad Reza Ojani. "Phosphorus Dynamics in Soil-Water-Sediment Environment." In Phosphorus in Soils and Plants. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.113225.

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Phosphorus, a crucial element for plant growth, is relatively scarce in the Earth’s crust. Its availability in surface soils ranges from 100 to 50 mg/kg. Plants can only absorb phosphorus in the form of orthophosphates, with H2PO4- being most absorbable at low pH levels. The average phosphorus concentration in soil solution is about 0.05 mg/L, but plant-satisfying levels range from 0.003 to 0.3 mg/L, underscoring the need for judicious phosphorus fertilization. Storage and stabilization reactions in soil, mainly facilitated by iron and aluminum oxides, play a key role. Compounds in most soils use hydroxyl exchange mechanisms for H2PO4- adsorption. Under alkaline conditions, minerals like calcium carbonate can absorb H2PO4-/ HPO42−, leading to precipitation. To ensure plant health, phosphorus fertilizers, especially calcium orthophosphates like triple superphosphate, are commonly used. These fertilizers offer essential phosphorus for plant growth and development, supporting vital processes like respiration and photosynthesis. Excess phosphorus in aquatic ecosystems, known as eutrophication, poses environmental risks, often originating from concentrated agricultural and livestock operations. Proper management of phosphorus inputs is crucial for balancing plant growth support with environmental preservation. Understanding phosphorus dynamics in soil, water, and sediments is vital for sustainable agriculture and conservation efforts. Adsorption isotherms provide insights into phosphorus absorption mechanisms in sediments, impacting water quality in surface and subsurface systems.
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Conference papers on the topic "Alkaline reaction environment"

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Maheswari, S., P. Sridhar, and S. Pitchumani. "Palladium supported on partially unzipped carbon nanotube as a methanol tolerant catalyst for oxygen reduction reaction in alkaline medium." In CARBON MATERIALS 2012 (CCM12): Carbon Materials for Energy Harvesting, Environment, Nanoscience and Technology. AIP, 2013. http://dx.doi.org/10.1063/1.4810059.

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Dong, Fang, Enguang Zhang, Qiaowei Tang, Qinping Guo, and Jinli Qiao. "Doped Mesoporous Carbons Derived from Transition Metal Iron and Chitosan as Efficient Non-Precious Cathode Catalysts for Oxygen Reduction Reaction in Alkaline Electrolyte." In 2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017). Atlantis Press, 2017. http://dx.doi.org/10.2991/iceesd-17.2017.169.

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Albqmi, Mha, Amani Belaiba, and Gassan Hodaifa. "VALORIZATION OF RED MUD AS A CATALYST IN THE TREATMENT OF OLIVE MILL WASTEWATER BY FENTON REACTION." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022v/4.2/s18.19.

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The worldwide olive oil sector is a strategic sector for olive oil producing countries due to olive oil nutrition and health benefits. With what is being produced of olive oil, it continues to produce wastewater with a significant environmental impact due to the high organic load and the biochemical composition of this wastewater, particularly, the presence of microbial growth inhibiting compounds such as phenolic compounds, which makes its biological treatment difficult. On other way, red mud, the main leaching residue resulting from the alkaline treatment of bauxite (Bayer process), can be u
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Moschetti, Ilaria, Lola Sarrasin, Guillaume Blain, Eros Mossini, Mario Mariani, and Abdesselam Abdelouas. "Effect of Curing Time and Water to Binder Ratio on Magnesium Potassium Phosphate Cement Exposed to Gamma Irradiation." In ASME 2023 International Conference on Environmental Remediation and Radioactive Waste Management. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/icem2023-109457.

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Abstract Metallic Waste (MW) is one type of low and intermediate radioactive waste. It is estimated that the current fleet of civil nuclear power reactors throughout the world would produce about 500 000 tons of this kind of waste in the near future due to their advancing age. MW comes mainly from spent fuel reprocessing facility, storage ponds and reactor primary circuit systems. MW typically consists of stainless steels or nickel alloys, which are the primary components of nuclear installations. Aluminum and beryllium belong to this waste category and are also called Reactive Metallic Waste
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Chida, Tsutomu, Aritomo Yamaguchi, Atsushi Takahashi, Kousuke Hiromori, Naoki Mimura, and Naomi Shibasaki-Kitakawa. "Process design for efficient production from glycerol into high-value chemicals." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/wimj4199.

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There is an urgent need to develop effective methods to use glycerol, a by-product of biodiesel production, by converting it into high-value chemicals. The by-product glycerol is contaminated with strong alkaline as a catalyst, and the environmental loads of the purification process to remove the contaminants has been a bottleneck to its utilization. As one way to solve this problem, it has been reported that glycerol can be converted to glyceric acid (GA), which is used as a pharmaceutical raw material, by partial oxidation of glycerol using an Au catalyst under alkaline condition. However, t
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MALINAUSKAITĖ, Regina, and Edvardas KAZLAUSKAS. "INVESTIGATION OF SOW LENTIL REACTION TO IONIZED ALKALINE WATER DURING EARLY STAGES OF ONTOGENESIS." In Rural Development 2015. Aleksandras Stulginskis University, 2015. http://dx.doi.org/10.15544/rd.2015.020.

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Plant physiological processes related to plant growth and development strongly depends on the environmental stress factors. Response to stress appears as a complex of different reactions with a particular feedback on plants. Influence of ionized alkaline water to sow lentil physiological reactions was investigated by analyzing changes in biomass accumulation, assimilates partitioning and pigment content. Ionized alkaline water at (8.4 pH) was applied during 6–7 and 8–9 leaves development stage. According to experiment results, at the latest stage of investigation, ionized alkaline water increa
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Amamoto, Ippei, Hirohide Kofuji, Munetaka Myochin, et al. "Separation of Lanthanoid Phosphates From the Spent Electrolyte of Pyroprocessing." In ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2009. http://dx.doi.org/10.1115/icem2009-16265.

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This study is carried out to make the pyroprocessing hold a competitive advantage from the viewpoint of environmental load reduction and economical improvement. As one of the measures is to reduce the volume of the high-level radioactive waste, the phosphate conversion method is applied for removal of fission products from the melt as spent electrolyte in this paper. Though the removing target elements in the medium are alkali metals, alkaline earth metals and lanthanoid elements, only lanthanoid elements and lithium form the insoluble phosphates by reaction with Li3PO4 or K3PO4. Therefore, as
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Gyde, Hartmut, Schmidt-Döhl Frank, and Püstow Anna. "Reaction Kinetic Studies of the Electrical Conductivity in Dissolution Experiments for the Identification of Alkali-Reactive Aggregate." In The 8th World Congress on Civil, Structural, and Environmental Engineering. Avestia Publishing, 2023. http://dx.doi.org/10.11159/icsect23.147.

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Sneha, S. S., and K. P. Ramaswamy. "A Comprehensive Review on the Mechanism of Concrete Deterioration in Accelerated Aggressive Environment." In International Web Conference in Civil Engineering for a Sustainable Planet. AIJR Publisher, 2021. http://dx.doi.org/10.21467/proceedings.112.40.

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Concrete is being extensively utilized for the constructional and other allied works on account of its versatility and mechanical properties. However, it exists to be in a state of disequilibrium with its ambient environment owing to its universal alkaline nature and hence is susceptible to deterioration when exposed to aggressive environments. The reactive species emanating from chemical plants, fertiliser industries, marine water, agro-food industries etc., produce detrimental effects on the concrete structures through the dissolution of calcium bearing phases from the hydrated matrix. This
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Cho, Yung-Zun, In-Tae Kim, Hee-Chul Yang, Hee-Chul Eun, Hwan-Seo Park, and Eung-Ho Kim. "Removal of Alkaline-Earth Elements by a Carbonate Precipitation in a Chloride Molten Salt." In The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7288.

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Separation of some alkaline-earth chlorides (Sr, Ba) was investigated by using carbonate injection method in LiCl-KCl eutectic and LiCl molten salts. The effects of the injected molar ratio of carbonate ([K2 (or Li2)CO3/Sr (or Ba)Cl2]) and the temperature (450–750 °C) on the conversion ratio of the Sr or Ba carbonate were determined. In addition, the form of the Sr and Ba carbonate resulting from the carbonation reaction with carbonates was identified via XRD and SEM-EDS analysis. In these experiments, the carbonate injection method can remove Sr and Ba chlorides effectively over 99% in both L
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Reports on the topic "Alkaline reaction environment"

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Desbarats, A. J., and J. B. Percival. Hydrogeochemistry of mine tailings from a carbonatite-hosted Nb-REE deposit, Oka, Quebec, Canada. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331256.

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Environmental impacts associated with the mining of carbonatite deposits are an emerging concern due to the demand for critical metals. This study investigates the chemistry of tailings seepage at the former Saint Lawrence Columbium mine near Oka, Québec, Canada, which produced pyrochlore concentrate and ferroniobium from a carbonatite-hosted Nb-REE deposit. Its objectives are to characterize the mineralogy of the tailings and their pore water and effluent chemistries. Geochemical mass balance modeling, constrained by aqueous speciation modeling and mineralogy, is then used to identify reactio
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Prusky, Dov, Lisa Vaillancourt, and Robert Fluhr. Host Ammonification by Postharvest Pathogens and its Contribution to Fungal Colonization and Symptom Development. United States Department of Agriculture, 2006. http://dx.doi.org/10.32747/2006.7592640.bard.

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Postharvest decay of fruits and vegetables caused by pathogenic and saprophytic fungi significantly impairs the quality and quantity of fresh produce brought to market. Consequently, there is considerable interest in identifying factors that determine the susceptibility of these commodities to pathogen infection. Insidious postharvest decays remain quiescent during fruit growth and harvest, but activate during the postharvest period. A key response to the physiological changes occurring during fruit ripening is the initiation of ammonium secretion by the pathogen. Ammonium ions at the infectio
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