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Journal articles on the topic 'Langelier'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Mélo, Ralini Ferreira de, Rubens Duarte Coelho, and Marconi Batista Teixeira. "ENTUPIMENTO DE GOTEJADORES CONVENCIONAIS POR PRECIPITADOS QUÍMICOS DE CARBONATO DE CÁLCIO E MAGNÉSIO, COM QUATRO ÍNDICES DE SATURAÇÃO DE LANGELIER." IRRIGA 13, no. 4 (2008): 525–39. http://dx.doi.org/10.15809/irriga.2008v13n4p525-539.

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ENTUPIMENTO DE GOTEJADORES CONVENCIONAIS POR PRECIPITADOS QUÍMICOS DE CARBONATO DE CÁLCIO E MAGNÉSIO, COM QUATRO ÍNDICES DE SATURAÇÃO DE LANGELIER Ralini Ferreira de Mélo1; Rubens Duarte Coelho2; Marconi Batista Teixeira21Escola Agrotécnica Federal de Vitória de Santo Antão, Propriedade Terra Preta, Vitória de Santo Antão, PE, fmralini@yahoo.com.br2Departamento de Engenharia Rural, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, SP 1 RESUMO Com o objetivo de avaliar a influência da indução forçada de precipitados químicos à base de carbonatos de cálcio e

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Clement, Bob. "Computers Can Reduce Langelier Index Test Time." Opflow 18, no. 3 (1992): 1–6. http://dx.doi.org/10.1002/j.1551-8701.1992.tb00278.x.

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Kellner, Erich, André Pina de Mesquita, and Fábio Noel Stanganini. "Avaliação do potencial de agressividade dos mananciais subterrâneos para abastecimento público em São Carlos (SP) - Brasil." Revista DAE 71, no. 239 (2022): 17–30. http://dx.doi.org/10.36659/dae.2023.002.

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A qualidade físico-química das águas subterrâneas relaciona-se diretamente com as interações mineralógicas entre solo/rocha durante sua infiltração, tempo de permanência nos aquíferos e influências antrópicas decorrentes do uso e ocupação do solo. Assim, é comum encontrar águas com elevados índices de agressividade, os quais podem caracterizá-las como corrosivas ou incrustantes. Este estudo objetivou avaliar a agressividade da água proveniente de poços subterrâneos instalados no município de São Carlos-SP, a partir da determinação dos Índices de Saturação de Langelier e Ryznard. Foram analisad

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Vasileva, Tanya. "Regional application of complex groundwater quality indices and mapping for the territory of Bulgaria with possibilities for their us." Geologica Balcanica 52, no. 3 (2023): 3–13. http://dx.doi.org/10.52321/geolbalc.52.3.3.

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The aim of this study is to perform a spatial complex hydrochemical analysis of groundwater quality in Bulgaria and compile a map. For this purpose, data for the chemical composition (Ca2+, Mg2+, Na+, Cl–, SO42–, NO3–, HCO3–, TDS, EC) of fresh groundwater (having shallow circulation) for the year 2015 have been summarized. These are the waters most vulnerable to incoming contaminants infiltrating from the surface and, at the same time, these are the waters of importance for the provision of potable water supply. The Groundwater Quality Index has been used to assess the water quality for domest

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Vasileva, Tanya. "Regional application of complex groundwater quality indices and mapping for the territory of Bulgaria with possibilities for their use." Geologica Balcanica 52, no. 3 (2023): 3–13. https://doi.org/10.52321/GeolBalc.52.3.3.

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The aim of this study is to perform a spatial complex hydrochemical analysis of groundwater quality in Bulgaria and compile a map. For this purpose, data for the chemical composition (Ca2+, Mg2+, Na+, Cl–, SO42–, NO3–, HCO3–, TDS, EC) of fresh groundwater (having shallow circulation) for the year 2015 have been summarized. These are the waters most vulnerable to incoming contaminants infiltrating from the surface and, at the same time, these are the waters of importance for the provision of potable water supply. The Groundwater Quality Index has been used to assess the water quality for domest

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Fouad, Hanan A., Mohamed A. Heikl, Rehab Hefny, and Mohamed Ayman. "Digital losses calculation in pipes by Langelier saturation index." Engineering Research Journal (Shoubra) 48, no. 1 (2021): 110–17. https://doi.org/10.21608/erjsh.2021.404886.

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Shafiee, Behnam. "Phorgotten Phenomena: Review of Applicable Indices for Evaluation of Water Quality." Materials Performance 46, no. 1 (2007): 46–47. https://doi.org/10.5006/mp2007_46_1-46.

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This article compares three water quality indices for the evaluation of water to he used in industrial processes in Iran. They include the Puckorious Saturation Index, Langelier Saturation Index, and Ryznar Stability Index. The most applicable index for use in that country is suggested.

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Kenny, John D., David R. Hokanson, and R. Rhodes Trussell. "Technical Note: Calculation of the Langelier Index at High pH." Journal - American Water Works Association 107, no. 3 (2015): 82—S3. http://dx.doi.org/10.5942/jawwa.2015.107.0053.

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Abbas, Thabit, Qays Muthna, Thikra Shihab, and Ola Jabur. "Decreasing the Tendency of Water to Form Scale and Corrosion in Cooling Towers – South Refineries Company (SRC) – Iraq." Journal of Petroleum Research and Studies 11, no. 2 (2021): 15–29. http://dx.doi.org/10.52716/jprs.v11i2.495.

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Scale formation and corrosion phenomena are major technical problems at Basra Refinery/ South Refineries Company (SRC). These technical problems are concentrated in cooling towers which are used to supply cooling water to the processing units. The Scales and corrosion products precipitate inside cooling units, heat exchangers and pipeline networks affecting negatively efficiency of refinery’s equipment. In this work, a real plant data was collected from four cooling towers which is supplied the coolant to the crude distillation units of the refinery and also from the raw water supplier. The co

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Abbas, Thabit, Qays M. Ammouri, Thikra Shihab, and Ola Jabur. "Decreasing the Tendency of Water to Form Scale and Corrosion in Cooling Towers – South Refineries Company (SRC) – Iraq." Journal of Petroleum Research and Studies 11, no. 2 (2021): 15–29. http://dx.doi.org/10.52716/jprs.v11i2.512.

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Scale formation and corrosion phenomena are major technical problems at Basra Refinery/ South Refineries Company (SRC). These technical problems are concentrated in cooling towers which are used to supply cooling water to the processing units. The Scales and corrosion products precipitate inside cooling units, heat exchangers and pipeline networks affecting negatively efficiency of refinery’s equipment. In this work, a real plant data was collected from four cooling towers which is supplied the coolant to the crude distillation units of the refinery and also from the raw water supplier. The co

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Alipour, Vali, Kavoos Dindarloo, Amir Hossein Mahvi, and Leila Rezaei. "Evaluation of corrosion and scaling tendency indices in a drinking water distribution system: a case study of Bandar Abbas city, Iran." Journal of Water and Health 13, no. 1 (2014): 203–9. http://dx.doi.org/10.2166/wh.2014.157.

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Corrosion and scaling is a major problem in water distribution systems, thus evaluation of water corrosivity properties is a routine test in water networks. To evaluate water stability in the Bandar Abbas water distribution system, the network was divided into 15 clusters and 45 samples were taken. Langelier, Ryznar, Puckorius, Larson–Skold (LS) and Aggressive indices were determined and compared to the marble test. The mean parameters included were pH (7.8 ± 0.1), electrical conductivity (1,083.9 ± 108.7 μS/cm), total dissolved solids (595.7 ± 54.7 mg/L), Cl (203.5 ± 18.7 mg/L), SO4 (174.7 ±

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Krane, Joshua A., and Michael H. Lubetsky. "Reopening the Langelier—Mignault Debate on Unauthorized Transactions Involving a Minor's Property." Revue générale de droit 39, no. 1 (2014): 101–25. http://dx.doi.org/10.7202/1026983ar.

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Under section 213 C.C.Q., immovables, enterprises, and important pieces of family property belonging to a minor can only be sold in cases of necessity, and only then with prior authorization from the court or the tutorship council. What is the legal status, therefore, of a contract of sale of a minor's property made by his tutor in violation of this provision? This question inspired a vigorous debate in both France and Quebec throughout the nineteenth century. Mignault "settled'' this debate in 1896 by declaring such a contract to be tainted with relative nullity. Now, over a century later, th

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Mbayo Kyongo Longo, Jerry, Eddy Mbuyu Ilunga, Banza Wa Banza Bonaventure, and Jean-Marie Kanda. "Evolution of the aggressive or scaling character of the water according to the dose of corrosion inhibitor." International Journal of Advanced Chemistry 7, no. 1 (2019): 46–51. http://dx.doi.org/10.14419/ijac.v7i1.28523.

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In the treatment of water to fight against corrosion, there are several techniques that can slow down this phenomenon and thus extend the service life of the pipes. Among these techniques, the use of corrosion inhibitors is one of them. It is in this context that the evolution of the aggressive and turbulent nature of the water of the Lubumbashi River has been studied experimentally through the determination of indicators such as pH, chemical potential, total alkalimetric titre, calcium hardness THCa, free chlorine content, dissolved oxygen content, SO42- sulfate ion content and Ryznard and La

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Templ, Matthias, Caterina Gozzi, and Antonella Buccianti. "A new version of the Langelier-Ludwig square diagram under a compositional perspective." Journal of Geochemical Exploration 242 (November 2022): 107084. http://dx.doi.org/10.1016/j.gexplo.2022.107084.

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Chassay, Jean-François. "L’histoire est-elle monotone ?" Dossier 39, no. 3 (2014): 17–30. http://dx.doi.org/10.7202/1026210ar.

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Cet article analyse trois essais qui forment les premiers ouvrages d’une nouvelle collection, « Documents » (Atelier 10), associée elle-même à une revue récemment fondée, Nouveau Projet. L’article cherche à montrer comment les auteurs (David Robichaud et Patrick Turmel, Nicolas Langelier, Samuel Archibald) imposent leur parole par rapport à l’actualité politique, appuyant leur propos sur le présent. Publiés sur une période de moins de dix-huit mois, les essais se lisent à l’aune des événements liés à la grève étudiante de 2012. Par ailleurs, il s’agit aussi de montrer dans quelle mesure l’argu

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Fonio, Filippo. "Eléonore Langelier, Du nouveau sur «La Muse Chrestienne»: quelques hypothèses sur l’identité de I.C.T." Studi Francesi, no. 150 (L | III) (December 31, 2006): 594. http://dx.doi.org/10.4000/studifrancesi.27462.

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Moelyo, Moelyadi. "TINGKAT KOROSIFITAS AIR TERHADAP INFRASTRUKTUR SUMBERDAYA AIR MENURUT DIN 4030 DAN LANGELIER SATURATION INDEX." JURNAL SUMBER DAYA AIR 8, no. 2 (2018): 187–200. https://doi.org/10.32679/jsda.v8i2.372.

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18

Kellner, Erich, and Felipe Eduardo de Souza Oliveira. "A agressividade da água e a possibilidade de alteração da qualidade para o consumo humano." Engenharia Sanitaria e Ambiental 27, no. 1 (2022): 159–68. http://dx.doi.org/10.1590/s1413-415220200372.

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RESUMO A característica físico-química da água subterrânea resulta das interações com a mineralogia do solo/rocha durante sua infiltração e do seu tempo de permanência nos aquíferos, além das influências antrópicas decorrentes do uso e ocupação do solo. Assim, é comum encontrar águas com elevados índices de agressividade corrosiva ou incrustante. O índice de saturação de Langelier é um dos indicadores para avaliar o grau de agressividade da água. Neste trabalho, foram expostas amostras de tubos de cobre à água bruta e à água potável, em que nesta foi empregado hipoclorito de sódio como desinfe

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Lestari, Devita Satya. "Tingkat Korosivitas Air Terhadap Infrastruktur Sumber Daya Air Berbahan Semen atau Mortar dengan fc’ ≤ 30 MPa pada 9 Waduk di Indonesia." Jurnal Teknik Kimia Indonesia 19, no. 1 (2021): 20. http://dx.doi.org/10.5614/jtki.2020.19.1.4.

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Abstrak. Korosi atau kerusakan yang terjadi di infrastruktur sumber daya air terutama yang berbahan semen atau mortar dengan fc’ atau dengan nilai kuat tekan ≤ 30 Mpa, dapat menimbulkan banyak kerugian. Kerugian yang ditimbulkan antara lain kerugian secara materiil karena korosi menggerogoti semua aset infrastruktur dan tentunya kerugian dalam hal keamanan karena dapat mengancam keselamatan manusia. Korosi merupakan permasalahan yang sangat penting dan tidak akan ada habisnya, karena peristiwa korosi terjadi secara terus-menerus dan berkelanjutan. Peristiwa korosi tidak dapat terjadi dengan se

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20

Nascimento, Daiane, Luana Lima, and Emily Becheleni. "Índice de saturação de águas duras do norte de Minas Gerais por PHREEQC e Langelier." Revista de Gestão de Água da América Latina 21, no. 1 (2024): 7–0. http://dx.doi.org/10.21168/rega.v21e7.

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Saifelnasr, A., M. Bakheit, K. Kamal, and A. Lila. "Calcium Carbonate Scale Formation, Prediction and Treatment (Case Study Gumry Oilfield-PDOC)." International Letters of Chemistry, Physics and Astronomy 17 (September 2013): 47–58. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.17.47.

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In this study the predictions and probabilities of calcium carbonate scale formation and corrosion occurrence inside Gumry Field Process Facilities (GFPF) and produced water injection process units (PWTP) was carried out. This was done calculating the Langelier Saturation Index (LSI), Ryznar Stability Index (RSI), Puckorius Scaling Index (PSI). The samples results for LSI index and PSI index were compared and found that all samples under threaten of calcium carbonate scale. The samples results for RSI index and found that all samples under formation of heavy calcium carbonate scale. Special ex

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Saifelnasr, A., M. Bakheit, Kamal Khalifa Taha, and A. Lila. "Calcium Carbonate Scale Formation, Prediction and Treatment (Case Study Gumry Oilfield-PDOC)." International Letters of Chemistry, Physics and Astronomy 17 (September 7, 2013): 47–58. http://dx.doi.org/10.56431/p-fj180a.

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In this study the predictions and probabilities of calcium carbonate scale formation and corrosion occurrence inside Gumry Field Process Facilities (GFPF) and produced water injection process units (PWTP) was carried out. This was done calculating the Langelier Saturation Index (LSI), Ryznar Stability Index (RSI), Puckorius Scaling Index (PSI). The samples results for LSI index and PSI index were compared and found that all samples under threaten of calcium carbonate scale. The samples results for RSI index and found that all samples under formation of heavy calcium carbonate scale. Special ex

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Matelyuk, E., D. Charny, O. Kovalenko, Yu Onanko, and S. Marysyk. "INFLUENCE OF HEMOLITOTROPHIC MICROBIOTA ON THE EFFICIENCY OF ANTICORROSIVE TREATMENT OF STEEL PIPELINES WITH ORTHO-POLYPHOSPHATE REAGENTS ON THE EXAMPLE OF “SEA QUEST LIQUID”." Geochemistry of Technogenesis 5, no. 33 (2021): 77–85. http://dx.doi.org/10.15407/geotech2021.33.077.

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It is noted that the overwhelming majority of water supply systems operating in Ukraine are made of steel or cast iron, which are subject to corrosion. It has been established that/ one of the ways to reduce the corrosiveness of drinking water is the use of an orthopolyphosphate preparation “SeaQuest Liquid” (TU U 20.5-V 0502222-001:2017). The results of studies of the effect of the “SeaQuest Liquid” preparation on organoleptic and physicochemical indicators of drinking water are presented. It was determined that the treatment of tap drinking water with the “SeaQuest Liquid” preparation does n

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Pietrucha-Urbanik, Katarzyna, Dominika Skowrońska, and Dorota Papciak. "Assessment of Corrosion Properties of Selected Mineral Waters." Coatings 10, no. 6 (2020): 571. http://dx.doi.org/10.3390/coatings10060571.

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This paper presents an analysis of natural mineral waters recognized by EU member states (on the basis of being announced in the Official Journal of the European Union) and originating in Polish territory. For each of these waters, calculations were made in relation to the Langelier saturation index, Ryznar stability index, and indices S1 (effect of chloride and sulfate ions on iron and steel), S2 (effect of nitrate ions on zinc), and S3 (effect of bicarbonate/sulfate ratio on copper). The impact of mineral waters on copper, hot-dip galvanized iron, stainless steel, acid-resistant steel, cast

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Koszelnik, Piotr, Jadwiga Kaleta, and Lilianna Bartoszek. "An assessment of water quality in dam reservoirs, considering their aggressive properties." E3S Web of Conferences 45 (2018): 00035. http://dx.doi.org/10.1051/e3sconf/20184500035.

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The paper presents the water classification of four small retention reservoirs on the basis of selected physical and chemical indicators, such as: conductivity, pH level, dissolved oxygen, calcium hardness, general hardness and alkalinity. Three reservoirs (Ożanna, Kamionka and Cierpisz) are within the limits in terms of average values for the second class of water quality. Water in the Nowa Wieś reservoir does not qualify as second quality class of surface water. These reservoirs have had very irregular seasonal variations of water quality. Unambiguous correlations have not been established.

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Gupta, Nitin, S. M. Nafees, M. K. Jain, and S. Kalpana. "Assessment of Groundwater Quality of Outer Skirts of Kota City with Reference to its Potential of Scale Formation and Corrosivity." E-Journal of Chemistry 8, no. 3 (2011): 1330–38. http://dx.doi.org/10.1155/2011/607836.

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Kota City is a prominent industrial and educational town of Rajasthan state, India. Mega industrial projects of cement, fertilizers, power plant, oil seed processing units are located nearby the city. The groundwater of study area is used in domestic as well as in industrial activities. It is worthwhile to know the water quality status and its effect on entity, which is exposed in practical use. A comprehensive assessment of water quality parameters in groundwater samples drawn from 24 different locations, 6 sites from each direction at outer skirts of Kota City of Rajasthan, India, in four se

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Taschereau, Justin. "Développement d’un dispositif participatif pour encadrer l’intégration pédagogique du numérique en contexte d’enseignement privé au secondaire." Multimodalité(s) 20 (2024): 178–206. https://doi.org/10.7202/1115970ar.

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Notre article traite du développement d’un dispositif participatif visant à implanter une démarche de consultation et de délibération sur l’intégration pédagogique du numérique en enseignement privé au secondaire. Nous abordons la disparité d’intégration du numérique, aggravée par un manque de consultation des personnes enseignantes (UNESCO, 2023) et le besoin d’adopter une vision commune du numérique (CSÉ, 2020). Nous présentons les démocraties technique, participative et délibérative (Gaudillière et Bonneuil, 2001; Langelier, 2013; Ruano-Barbolan, 2018) pour guider le développement de notre

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Oliveira, Maurício de, and Celsemy Eleutério Maia. "QUALIDADE FISICO-QUÍMICA DA ÁGUA PARA IRRIGAÇÃO EM DIFERENTES AQUÍFEROS NA ÁREA SEDIMENTAR DO ESTADO DO RIO GRANDE DO NORTE." Revista Brasileira de Engenharia Agrícola e Ambiental 2, no. 1 (1998): 17–21. http://dx.doi.org/10.1590/1807-1929/agriambi.v02n01p17-21.

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RESUMO Mais de 600 amostras de água de diferentes mananciais do semi-árido nordestino foram analisadas e estudadas a partir do banco de dados do Laboratório de Análises de Águas e Fertilidade do Solo, no Departamento de Solos e Geologia da Escola superior de Agricultura de Mossoró. As análises fisico-químicas permitiram avaliar a qualidade da água para irrigação, empregando-se índices clássicos da literatura, como Índice de Saturação de Langelier, CE, RAS, RASaj e RAScor. Na maioria das amostras estudadas observou-se que mais de 30% apresentam problemas devido ao risco de sodicidade (RAS eleva

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Skoczko, Iwona, and Ewa Szatyłowicz. "Experiments on Water Stabilization." Proceedings 16, no. 1 (2019): 3. http://dx.doi.org/10.3390/proceedings2019016003.

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The aim of the study was assessment of groundwater stabilization. Corrosive water effects on metals include complex electrochemical and biochemical processes. None of the water components remain indifferent to the metal and can accelerate or delay its corrosion. On the basis of the conducted tests of water samples, the aggressiveness and corrosivity indicators were calculated. Conducted research included analyses of raw and treated water. Raw water was taken as groundwater. Then it was treated in individual and complex processes such as aeration, filtration and ion exchange. Water aggressivene

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Gaglioti, Simona, Ernesto Infusino, Tommaso Caloiero, Giovanni Callegari, and Ilaria Guagliardi. "Geochemical Characterization of Spring Waters in the Crati River Basin, Calabria (Southern Italy)." Geofluids 2019 (February 3, 2019): 1–16. http://dx.doi.org/10.1155/2019/3850148.

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The characterization of the spatial variation of geochemical parameters in spring waters, especially the ones used for drinking purpose, is essential to identify potential risks to humans. In this work, results of a qualitative analysis on 190 samples of spring waters collected in the largest catchment of the Calabria region (southern Italy) are shown. Several physical and chemical parameters were analysed and the Langelier-Ludwig diagram was built to evaluate the hydrochemical facies of the sampled waters. Additionally, the relationships between water temperature and altitude and electric con

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Anshar, Andi Muhammad, Bulkis Musa, Muhammad Ayaz, et al. "A Critical Review on Corrosion and Fouling of Water in Water Distribution Networks and Their Control." Acta Chimica Slovenica 70, no. 2 (2023): 173–83. http://dx.doi.org/10.17344/acsi.2022.7939.

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Corrosion and scaling are among the problems that may arise when storing water in tanks. Several factors affect the corrosion and scaling of water, which include pH, temperature, alkalinity, Ca2+ hardness, TDS, concentrations of Cl–, SO42–, CO32–, and HCO3–. Also, several indices can be measured using these properties such as the Langelier saturation index, Ryznar index, Aggressive index, Larson, Scold index, water quality index, and Puckorius index. These indicators determine the degree of corrosiveness and sedimentation of water. The purpose of this review article was to study the impact of

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Hasani, Kamal, Hadi Sadeghi, Abdollah Dargahi, Mehdi Vosoughi, Ahmad Mokhtari, and Maryam Pirasteh. "Scaling and Corrosion Potential in Drinking Water Distribution Systems of Meshginshahr City, Iran Using Langelier Saturation Index and Ryznar Stability Index." Journal of Advances in Environmental Health Research 9, no. 3 (2020): 201–8. http://dx.doi.org/10.32598/jaehr.9.3.1210.

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Background: Corrosion and scaling are major problems in the drinking water facilities causing problems such as water loss, recued life of facilities, pipe punctures, clogging of pipes, and pressure loss in drinking water distribution system. This study aims to determine the corrosion and scaling potential in drinking water distribution system of Meshginshahr, Ardebil, Iran. Methods: This descriptive cross-sectional study was conducted during the two seasons (summer and winter) in 2019. A total of 20 water samples, which were obtained by averaging 100 samples, were analyzed to determine the cor

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Ribeiro, Túlio A. P., Rogério P. da S. Airoldi, José E. S. Paterniani, and Marcelo J. M. da Silva. "Variação dos parâmetros físicos, químicos e biológicos da água em um sistema de irrigação localizada." Revista Brasileira de Engenharia Agrícola e Ambiental 9, no. 3 (2005): 295–301. http://dx.doi.org/10.1590/s1415-43662005000300001.

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O presente trabalho teve como objetivo pesquisar, uma fonte hídrica superficial utilizada em um sistema de irrigação por gotejamento, com o fim de se analisar a variação temporal, durante um ano, dos principais parâmetros físicos, químicos e biológicos da sua água e que causam problemas de entupimento nos emissores: sólidos suspensos, turbidez, pH, ferro, sulfetos, condutividade elétrica, sólidos dissolvidos, dureza, índice de Langelier, algas e bactérias Os critérios para avaliação das impurezas presentes na água de irrigação se basearam em estudos realizados por Bucks & Nakayama (1986),

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Doğan, Pınar, and Üstün Şahin. "Manisa Yöresi Sulama Suyu Kaynaklarının Toprak, Bitki ve Damla Sulama Sistemi Yönünden Değerlendirilmesi." Turkish Journal of Agriculture - Food Science and Technology 7, no. 10 (2019): 1648. http://dx.doi.org/10.24925/turjaf.v7i10.1648-1656.2755.

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Chemical quality analysis results of 5 surface and 30 groundwater resources commonly used in agricultural irrigation in Manisa province were evaluated and the possible effects on soil, plant and drip irrigation system were determined. In this context, the cation (Ca, Mg, Na, K), anion (CO3, HCO3, CI, SO4), Fe, B contents, pH and electrical conductivity values of the water resources as well as the Percentage Sodium, Sodium Adsorption Ratio and the Adjusted Sodium Adsorption Ratio determined by the calculation Permanent Sodium Carbonate, Langelier Saturation Index, Potential Salinity, Permeabili

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Antas, Francisco Pio de Souza, Nildo da Silva Dias, André Moreira de Oliveira, et al. "Hydrochemical Characterization of Water Resources From Reverse Osmosis Desalination Plants." Journal of Agricultural Science 10, no. 12 (2018): 445. http://dx.doi.org/10.5539/jas.v10n12p445.

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The desalination of the brackish waters is a technology of coexistence with the semi-arid and its adoption implies in determining the environmental impacts due to the reject brine generated. Therefore, this work evaluated the hydrochemical characteristics of well water (feed water), drinking water (purified) and reject brine from reverse osmosis desalination plants in Western Meso-region, Rio Grande do Norte state, Brazil. During the periods between October 2013 and November 2014, four water samples were taken at seven inland desalination plants in communities and rural settlements. The hydroc

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Saraswat, R. K., S. Verghesep, and T. Pachauri. "Assessment of Water Quality of Khari River in Agra District During Lockdown Period using Multivariant Techniques and Quality Indexes." Asian Journal of Chemistry 34, no. 1 (2021): 67–77. http://dx.doi.org/10.14233/ajchem.2022.23411.

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Throughout the world, the lock-down period during COVID-19 (March 2020- July 2021) has reported an improvement in the ecological scenario with controlled anthropogenic activities. This study presents a comparative assessment of water quality of the highly polluted Khari river in Agra district (India) during the pre-pandemic and post-pandemic period of COVID-19. The result was analyzed in terms of water quality index (WQI), the most accessed tool used by various researchers to report the water quality. In addition, Aggressive index (AI) and Langelier saturation index (LSI) have also been determ

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Brink, H., P. G. G. Slaats, and M. W. M. van Eekeren. "Scaling in domestic heating equipment: getting to know a complex phenomenon." Water Science and Technology 49, no. 2 (2004): 129–36. http://dx.doi.org/10.2166/wst.2004.0106.

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Excessive scaling is one of the main nuisances in relation to the use of drinking water. Ever more water companies try to minimise scaling. Although scaling is an old problem, prediction of scaling has been proven to be very tricky. Traditionally, the (Langelier) Saturation Index is used to evaluate scaling properties of drinking water. From experience it is well known that this parameter is not suitable for proper prediction. New parameters have been developed and standardised for scaling prediction, namely the Calcium Carbonate Precipitation Potential, calculated at a temperature of 90°C (CC

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Musik, Daniel, Krzysztof Wójcik, Małgorzata Sekuła-Wybańska, and Rafał Rakoczy. "Corrosion process assessment using a novel type of coupon installation." Polish Journal of Chemical Technology 24, no. 4 (2022): 84–88. http://dx.doi.org/10.2478/pjct-2022-0033.

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Abstract The main aim of this experimental study is to test the novel type of coupon installation. This set-up was used to carry out the corrosion process under aggressive conditions. Moreover, the effect of corrosion inhibitors on the scale-forming tendency was evaluated. The corrosive conditions were defined by using the Langelier Saturation Index (this index is an approximate indicator of the degree of saturation of CaCO3 in water) and the Ryznar stability index (this index is allowed to determine if the liquid sample is aggressive or not). Additionally, the inductively coupled plasma optic

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Gebril, Abdussalam, and Ibrahim Bakari. "The Inhibition Effect of the Expired Esomeprazole on the Corrosion of Carbon Steel in Desalination Water." Journal of Pure & Applied Sciences 21, no. 1 (2022): 125–30. http://dx.doi.org/10.51984/jopas.v21i1.1419.

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A study has been carried out to evaluate the effect of expired Esomeprazole (S3O3N19H17C) (20mg) as Inhibitor on the corrosion behaviour of carbon steel in desalination water (Drinking water) by using weight loss technique at room temperature. The test solution used in this study was Desalination water (Drinking water) samples and expired Esomeprazole was used as Inhibitor. The Langelier Saturation Index (LSI) results and the potential pH diagram (Pourbaix diagram) gave an indication that Desalination water sample was a corrosive media. From the study results, it was found that all the weights

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Boschetti, Tiziano. "Application of brine differentiation and Langelier–Ludwig plots to fresh-to-brine waters from sedimentary basins: Diagnostic potentials and limits." Journal of Geochemical Exploration 108, no. 2 (2011): 126–30. http://dx.doi.org/10.1016/j.gexplo.2010.12.002.

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El-Zoka, Ayman A. "(Invited) Making Nanostructured Composites Via Inner-Pore Electrodeposition into Nanoporous Metals." ECS Meeting Abstracts MA2023-02, no. 21 (2023): 1281. http://dx.doi.org/10.1149/ma2023-02211281mtgabs.

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The selective removal of Ag from a solid solution of Ag-Au or Ag-Au-Pt yields a 3D bicontinuous, open-pore, nanoporous gold substrate (NPG), that is rich in the more noble metal(s)1 (Au and/or Pt). NPG has been successfully developed by the intelligent use of the conventionally-undesired dealloying corrosion. The excellent properties of NPG are attributed to the surface area-to-volume ratio, and high curvature of nanoligament surfaces2,3 . While a lot of recent research has been focusing on the structure/property relationships of NPG as a functional material in its own right4,5, the further us

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Salarian, Mohammad, Masumeh Najafi, S. Vahid Hosseini, and Mohammad Heydari. "Classification of Zayandehrud River Basin Water Quality Regarding Agriculture, Drinking, and Industrial Usage." American Research Journal of Civil and Structural Engineering 1, no. 1 (2015): 9. https://doi.org/10.5281/zenodo.18255.

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Iran is located in arid and semi-arid of the world and it has shortage of freshwater resources. So, to review the status of water use and protection of water resources against pollution, especially in the global water crisis is necessary and vital. Zayandehrud River as the largest river of the central plateau of Iran and the most important surface water flow in Isfahan province, which preserving its quality is important because of agriculture-environmental, industry and drinking. In this regard, the assessment of the quality of the 15 stations in the Zayandehrud river basin has been done by us

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Romashchenko, M. I., O. V. Kovalenko, E. M. Matselyuk, D. V. Charny, and V. A. Prokopov. "Study of the orthopolyphosphate specimen "SeaQuest Liquid" for anticorrosion and stabilization water treatment." Міжвідомчий тематичний науковий збірник "Меліорація і водне господарство", no. 1 (May 7, 2021): 5–14. http://dx.doi.org/10.31073/mivg202101-273.

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Most water supply systems operating in Ukraine are made of steel or cast iron, which are subject to corrosion. The Institute of Water Problems and Land Reclamation of the National Academy of Sciences of Ukraine carried out the experimental studies on the effect of an orthophosphate corrosion inhibitor on the quality of drinking water and the rate of corrosion as a result of its appliance in various doses in the water supply network. The water supply system of Obolon district of the city of Kiev was selected as the object of research. A characteristic feature of this water supply system is the

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Siwiec, Tadeusz, Magdalena M. Michel, Lidia Reczek, and Piotr Nowak. "The influence of aeration on the change in corrosiveness and aggressiveness of groundwater." Water Supply 16, no. 2 (2015): 445–52. http://dx.doi.org/10.2166/ws.2015.155.

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A high concentration of aggressive carbon dioxide disturbs many technological processes in water treatment. It also causes the development of corrosion in steel and concrete. De-acidification of groundwater by means of air bubbles alters pH and the concentration of aggressive carbon dioxide. This was investigated for the variables of air flow (Q = 20–50 L h−1) and height of water layer (H = 25–75 cm) as well as aeration time (t = 0–20 min). The obtained three-parameter models showed good correlation with the experimental results, except in a few cases where r2 was bigger than 0.9. Furthermore,

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Ribeiro, Tulio A. P., and José E. S. Paterniani. "Comparação de elementos filtrantes no grau de obstrução em irrigação por gotejamento." Engenharia Agrícola 33, no. 3 (2013): 488–500. http://dx.doi.org/10.1590/s0100-69162013000300006.

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Esta pesquisa teve como finalidade mostrar a variação da qualidade da água e sua influência na perda de carga de dois sistemas de filtragem (filtro de disco e manta sintética não tecida) utilizados em um sistema de irrigação localizada por gotejamento. Utilizou-se água de um reservatório aberto, onde foi instalado um módulo de irrigação localizada para o estudo. Para melhor comparação dos filtros, foram utilizados dois índices de uniformidade de distribuição de água para verificar o grau de entupimento dos gotejadores. A pesquisa foi desenvolvida em quatro etapas de 30 dias, realizadas em dife

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Choi, Hanna, Jaeyeon Kim, Byoung Ohan Shim, and Dong-hun Kim. "Characterization of Aquifer Hydrochemistry from the Operation of a Shallow Geothermal System." Water 12, no. 5 (2020): 1377. http://dx.doi.org/10.3390/w12051377.

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The use of shallow geothermal energy systems utilizing groundwater temperature for the air-conditioning of buildings is increasing worldwide. The impact of these systems on groundwater quality has become crucial for environmental regulations and system design. For the long-term operation of geothermal systems, it is important to evaluate their influence on the geochemical properties of groundwater, including precipitation and dissolution of secondary minerals. This research was conducted in a real-scale geothermal system, consisting of a groundwater heat pump (GWHP). Hydrochemical data were ob

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Zhang, Yanhao, Lilong Huang, Zhibin Zhang, Cuizhen Sun, and Jixiang Li. "Actual Application of a H2-Based Polyvinyl Chloride Hollow Fiber Membrane Biofilm Reactor to Remove Nitrate from Groundwater." Journal of Chemistry 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/349830.

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To evaluate the actual performance of the H2-based polyvinyl chloride hollow fiber membrane biofilm reactor (HF-MBfR), we used HF-MBfR to remove nitrate from the nitrate contaminated groundwater with the dissolved oxygen (~6.2 mg/L) in Zhangqiu city (Jinan, China). The reactor was operated over 135 days with the actual nitrate contaminated groundwater. The result showed that maximum of nitrate denitrification rate achieved was over 133.8 gNO3--N/m3d (1.18 gNO3--N/m2d) and the total nitrogen removal was more than 95.0% at the conditions of influent nitrate 50 mg/L, hydrogen pressure 0.05 MPa, a

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SCHABEL, SAMUEL, HANS-JOACHIM PUTZ, UDO HAMM, et al. "Calcium carbonate in the paper industry - blessing for coated papermaking and curse for recycling processes." November 2014 13, no. 11 (2014): 47–54. http://dx.doi.org/10.32964/tj13.11.47.

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Calcium carbonate provides good optical properties to graphic paper and is relatively inexpensive. Therefore, the use of calcium carbonate for the production of paper has steadily increased. But the high amount of calcium carbonate in paper for recycling and the closure of water circuits leads to a high concentration of calcium ions in the process water of paper mills. The consequence can be undesired precipitation and deposition of calcium carbonate in machines and plant components of the mills. Enhanced knowledge about the precipitation potential of calcium carbonate is needed to avoid or re

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Zraick, F., C. Cazin, S. Bedry, M. Andres, and B. Rabaud. "Online monitoring and control of drinking water corrosion potential at a full-scale plant." Water Practice and Technology 14, no. 4 (2019): 772–82. http://dx.doi.org/10.2166/wpt.2019.062.

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Abstract To mitigate pipe and water quality degradation in distribution, treatment targets were established to continuously control the corrosion potential of drinking water towards cement, lead and iron materials at a 225 MLD surface water treatment plant. Indicators were identified to estimate the corrosion potential of water for each of the 3 materials: the Langelier Saturation Index (LSI) for cement, pH for lead and a novel corrosion index for iron. Linear Polarization Resistance (LPR) probes equipped with cast iron and lead electrodes provided direct and continuous measurements of actual

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Infusino, Ernesto, Ilaria Guagliardi, Simona Gaglioti, and Tommaso Caloiero. "Vulnerability to Nitrate Occurrence in the Spring Waters of the Sila Massif (Calabria, Southern Italy)." Toxics 10, no. 3 (2022): 137. http://dx.doi.org/10.3390/toxics10030137.

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Knowledge of spring waters’ chemical composition is paramount for both their use and their conservation. Vast surveys at the basin scale are required to define the nature and the location of the springs and to identify the hydrochemical facies of their aquifers. The present study aims to evaluate the hydrochemical facies and the vulnerability to nitrates of 59 springs falling in the Sila Massif in Calabria (southern Italy) and to identify their vulnerability through the analysis of physicochemical parameters and the use of the Langelier–Ludwig diagram. A spatial analysis was performed by the s

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