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Relevant bibliographies by topics / Silica sulphuric acid

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Academic literature on the topic 'Silica sulphuric acid'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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Journal articles on the topic "Silica sulphuric acid"

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Li, Hong Fang, Li Guo, and Yi Xia. "Acid Rain Erosion Resistance of Concretes Containing Super-Fine Mineral Admixtures." Applied Mechanics and Materials 174-177 (May 2012): 1402–5. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.1402.

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The sulphuric acid erosion resistance of high strength concretes containing limestone powder,titanium slag and silica ash were studied by accelerating cycle sulphuric acid soak tests. It indicates that the introduction of super-fine mineral powders into concrete can improve its sulphuric acid erosion resistance. With fixed 10% limestone powder, blending 10% titanium slag or 15% silica ash can remarkably enhance sulphuric acid erosion resistance of concrete. The concretes containing mineral admixtures such as limestone powder, titanium slag and silica ash can be used in acid rain abundant area.

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Sáenz, María Carolina, Carlos Andrés Báez Quintero, José de Jesús Díaz Velásquez, and Gerardo Rodríguez Niño. "Reaction parameter study for the chemical synthesis of adsorbent silica gel." Ingeniería e Investigación 27, no. 2 (2007): 44–50. http://dx.doi.org/10.15446/ing.investig.v27n2.14828.

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This article presents an appropriate set of reaction parameters (reaction temperature, sulphuric acid and sodium silicate reagent concentration) for obtaining adsorbent silica gel (ASG) using Colombian-produced raw materials. The core of ASG synthesis lies in sulphuric acid’s neutralisation reaction with sodium silicate. Their effect on final ASG moisture adsorption capacity was measured after changing such synthesis’ above-mentioned reaction parameters. Within the range of conditions studied, it was found that the highest adsorption capacity occurred by combining both low sodium silicate conc

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Silin, Ivan, Christian Dertmann, Vesna S. Cvetković, Srecko Stopic, and Bernd Friedrich. "Prevention of Silica Gel Formation for Eudialyte Study Using New Digestion Reactor." Minerals 14, no. 2 (2024): 124. http://dx.doi.org/10.3390/min14020124.

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This work includes a combined hydrometallurgical treatment of a eudialyte ore sample with a subsequent preparation of leaching residue using mechanical separation methods. Hydrometallurgical treatment contains dry digestion with sulphuric acid at room temperature and filtration of the obtained product. The objectives of adopting these procedures are to test a new digestion reactor in order to prevent silica gel formation from the eudialyte ore. The obtained results revealed that silica gel formation is prevented during dissolution with sulphuric acid. A high leaching efficiency of light rare e

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Bawa, SG, AS Ahmed, PC Okonkwo, and SM Waziri. "DEVELOPMEMT OF PILOT SCALE DEALUMINATION UNIT OF 2.5 kg METAKAOLIN PER BATCH CAPACITY." Nigerian Journal of Technology 36, no. 3 (2017): 829–34. http://dx.doi.org/10.4314/njt.v36i3.24.

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A pilot-size dealumination unit to handle 2.5kg of metakaolin per batch was designed and fabricated and test run. The metakaolin was prepared from Kankara kaolin. The metakaolin was completely split into silica and alumina. The silica component which was inert to the sulphuric acid used during the reaction and was obtained as a solid product. While the alumina which reacted with the sulphuric acid was obtained in liquid form as aluminum sulphate, known as alum. The dealumination unit comprises of the dealumination reactor, known as dealuminator, acid holding tank and metakaolin slurry mixing t

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Pinzari, Flavia, and Javier Cuadros. "Unusual Perforations in Phlogopite Crystals from Caldara di Manziana (Italy) Caused by Sulphuric Acid Generated by Microbial Oxidation of H2S Emanations." Minerals 11, no. 5 (2021): 547. http://dx.doi.org/10.3390/min11050547.

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Phlogopite flakes strewn on the soil of Caldara di Manziana (Italy) display multiple minute perforations. The site is a caldera linked to recent volcanism (90 ka to 0.8 Ma) with present emanations of CO2 (~150 t d−1) and H2S (~2.55 t d−1). Stereomicroscopy and SEM–EDX observation of the phlogopite crystals shows holes and depressions <200 µm to 2 mm across. They are circular, pseudo-hexagonal, or irregular. Within the depressions, there are deposits of phlogopite alteration products consistent with a sulphuric acid attack, showing loss of Mg and K. Some are thin and homogeneous; others are

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Faizul, Che Pa, C. Abdullah, and B. Fazlul. "Review of Extraction of Silica from Agricultural Wastes Using Acid Leaching Treatment." Advanced Materials Research 626 (December 2012): 997–1000. http://dx.doi.org/10.4028/www.scientific.net/amr.626.997.

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Large quantities of agricultural wastes such as palm ash and rice husk are found in Malaysia, have a large possibility to be employed as usefully renewable to produce energy and silica (SiO2). Extensive researches have been carried out to extract silica from agricultural wastes such rice husk, because silica is useful raw material for industrial application. In the previous studies, the strong acid leaching treatment was carried out on rice husk to remove metallic impurities and organics contained in them. Leaching treatment is a proper route to extract the silica. Sulphuric acid (H2SO4), hydr

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Thirunarayanan, G., and G. Vanangamudi. "Synthesis of Some Aryl Chalcones Using Silica-Sulphuric Acid Reagent under Solvent Free Conditions." E-Journal of Chemistry 4, no. 1 (2007): 90–96. http://dx.doi.org/10.1155/2007/421435.

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There are two series of α, β-unsaturated ketones derived form Biphenyl and 9H-Fluorenyl, and ketones with various substituted benzaldehydes under solvent free conditions using silica-sulphuric acid as a reagent in an oven. The catalyst silica is reusable and the yields of chalcones are more than 90%. These chalcones are characterized by physical constants and spectral data.

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da Silva, Carolina Nogueira, Liliani Pacheco Tavares Nazareth, Mônica Elizetti de Freitas, and Ana Claudia Queiroz Ladeira. "Sulphuric Acid Digestion of Anatase Concentrate." Mining 4, no. 1 (2024): 79–90. http://dx.doi.org/10.3390/mining4010006.

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The processing of anatase ores by sulphuric acid digestion is well known for its low titanium dissolution yields, which makes the process economically and technically unfeasible. Anatase is considered much less reactive than other forms of titanium such as ilmenite and rutile. Generally, to enhance its dissolution, thermal processes along with acid and/or alkaline leaching processes are necessary. Studies of direct sulphuric acid digestion are few and the reported yields of titanium dissolution are <48%. This study investigated the main parameters of sulphuric digestion of anatase such as t

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Faizul, Che Pa, C. Abdullah, and B. Fazlul. "Extraction of Silica from Palm Ash Using Citric Acid Leaching Treatment: Preliminary Result." Advanced Materials Research 795 (September 2013): 701–6. http://dx.doi.org/10.4028/www.scientific.net/amr.795.701.

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Large quantities of agricultural wastes such as palm ash and rice husk are found throughout Malaysia, have a possibility to be used as a usefully renewable source for production of energy and silica (SiO2). Extensive researches have been carried out to extract silica from agricultural wastes such as rice husk, due to silica as a useful raw material for industrial application. In the previous studies, the strong acid leaching treatment was carried out to remove metallic impurities and organics contained in rice husk. Since leaching treatment is a proper route to extract the silica, sulphuric ac

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Filipovic, Radislav, Dragica Lazic, Mitar Perusic, and Ivan Stijepovic. "Oil absorption in mesoporous silica particles." Processing and Application of Ceramics 4, no. 4 (2010): 265–69. http://dx.doi.org/10.2298/pac1004265f.

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Mesoporous silica particles were prepared from highly basic sodium silicate solutions, having different silica modulus and SiO2 concentrations, by adding sulphuric acid at different temperatures. Pore structure of prepared silica particles (aggregates) is strongly influenced by processing conditions and easy controllable in broad range of the specific surface area, pore size, pore volume and size distribution. It is shown that there is a clear correlation between volume of absorbed oil and processing parameters used in preparation of silica aggregates. Thus, oil absorption is higher in the sam

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Books on the topic "Silica sulphuric acid"

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Fresenius, C. Remigius. A System Of Instruction In Quantitative Chemical Analysis. Arkose Press, 2015.

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Fresenius, C. Remigius. A System Of Instruction In Quantitative Chemical Analysis. Arkose Press, 2015.

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Johnson, Samuel William, C. Remigius Fresenius, and Oscar Dana Allen. A System of Instruction in Quantitative Chemical Analysis. Arkose Press, 2015.

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Rayment, George E., and David J. Lyons. Soil Chemical Methods - Australasia. CSIRO Publishing, 2010. http://dx.doi.org/10.1071/9780643101364.

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Soil Chemical Methods – Australasia describes over 200 laboratory and field chemical tests relevant to Australasia and beyond. The information and methodology provided across 20 chapters is comprehensive, systematic, uniquely coded, up-to-date and designed to promote chemical measurement quality. There is guidance on the choice and application of analytical methods from soil sampling through to the reporting of results. In many cases, optional analytical ‘finishes’ are provided, such as flow-injection analysis, electro-chemistry, multiple flame technologies, and alternatives to chemical testin

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Book chapters on the topic "Silica sulphuric acid"

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Leong, K. S., J. A. Magreen, Dr Lee Shyue Leong, and Dr Mohammad Abdul Mannan. "MIX DESIGN OF POLYMER CONCRETE FOR POTHOLE REPAIR." In Futuristic Trends in Construction Materials & Civil Engineering Volume 2 Book 11. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2023. http://dx.doi.org/10.58532/v2bs11p1ch3.

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The increased traffic load due to rapid urbanization causes pavement distresses resulting reduction of service life of flexible pavement. Pavement distress is harmful to road user and vehicle, and it causes accident. Polymer concrete having several advantages can be considered as alternative material for pothole repair. Thus, this study has focused on mix design development of polymer concrete through various performances. In this study, orthophthalic unsaturated polyester resin as binder, methyl ethyl ketone peroxide (MEKP) as hardener, acetone and lacquer thinner as diluent, fly ash, silica

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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 "Silica sulphuric acid"

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Kamal, Puteri Nurain Syahirah Megat M., Muhammad Hafizuddin Adzhar, Muhammad Afiq Aiman Rasmadi, Aimie Syahira Ahmad Taufek, Harun Sarip, and Amin Safwan Alikasturi. "Cellulose conversion to levulinic acid using sulphuric acid on silica-alumina support (SSA)." In XIV INTERNATIONAL CONFERENCE ELECTROMACHINING 2023. AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0195510.

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"Evaluation of the Sulphuric Acid Resistance of Contemporary Concretes." In "SP-221: Eighth CANMET/ACI International Conference on Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete". American Concrete Institute, 2004. http://dx.doi.org/10.14359/13284.

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Ferella, Francesco, Svetlana Zueva, Ionela Birloaga, Valentina Innocenzi, Nicolò Ippolito, and Francesco Vegliò. "Production of high-purity quartz for optical applications." In Proceedings of XVI International Mineral Processing and Recycling Conference, Belgrade, 28-30.05.2025. University of Belgrade, Technical Faculty, Bor, 2024. https://doi.org/10.5937/imprc25639f.

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The paper investigated the production of high-grade quartz for optical devices, starting with mined quartz. This material contained 668 mg/kg of Fe2O3, and the aim was to reduce the content to below 100 mg/kg through an environmentally and economically sustainable process. It was found that the sequential leaching water-oxalic-sulphuric acid is very efficient using two sequential stages; both acids can be used two times. The best conditions were: water leaching S/L 100%, temperature 90°C, time 45 min; oxalic acid stage: OA concentration 17 g/L, leaching time 2.5 h, temperature 90°C, S/L 20% wt

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Ondrejka Harbulakova, Vlasta, Adriana Estokova, Michaela Smolakova, and Martina Kovalcikova. "Mathematical Investigation of Concrete Corrosion – a Sustainability Study." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.038.

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The issue of sustainability is a major spur to innovation in the flied of civil engineering where the important role is decreasing the detrimental effects on environment and save raw materials and energy. Micro silica is a by-product of the industrial manufacture of ferrosilicon and metallic silicon in high temperature electric arc furnaces and is used as an additive for improving concrete properties. The paper presents the results of chemical corrosion and bio-corrosion tests on concrete samples with 5% addition of microsilica as well as on concrete samples with only Portland cement. Chemical

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McGrath, Thomas, Adrian Covaci, Els Van Hoeck, et al. "Gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-high resolution mass spectrometry (LC-HRMS) approaches for analysis of chlorinated paraffins in edible fats and oils." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/wycg9726.

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Chlorinated paraffins (CPs) are high production volume chemicals composed of complex mixtures of thousands of compounds that have been applied widely as flame retardants and plasticizers. CPs have demonstrated toxic and bioaccumulative properties, while evidence suggests dietary intake to constitute a major pathway for human exposure. This study reports on the optimization and validation of an analytical method for the quantification of short- and medium-chained CPs (SCCPs and MCCPs, respectively) using gas chromatography-mass spectrometry (GC-MS) in fats and oils, and the development of liqui

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Klimko, Jakub, Jarmila Trpčevská, Kristína Talianová, Petra Růžičková, and Dušan Oráč. "Recycling of the slag from lithium battery recycling." In Proceedings - 55th International October Conference on Mining and Metallurgy, Kladovo, 15-17 October 2024. Mining and Metallurgy Institute, Bor, 2024. https://doi.org/10.5937/ioc24345k.

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This study investigates the recycling of lithium-ion batteries, focusing on combined pyrometallurgical and hydrometallurgical methods. Pyrometallurgical techniques are effective for processing large volumes of waste, while subsequent hydrometallurgical treatment of slags face challenges due to high silicon leaching. The introduction of the dry digestion method, combining powdery slags with concentrated sulphuric acid and water, addresses this issue by reducing silicon leaching from 50% to 1.25%. This approach improves the recovery efficiency of lithium and aluminium and enhances the practicali

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