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Journal articles on the topic 'Clay sorbents'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Dontsova, Tetiana A., Elena I. Yanushevskaya, Svitlana V. Nahirniak, et al. "Directional Control of the Structural Adsorption Properties of Clays by Magnetite Modification." Journal of Nanomaterials 2018 (December 16, 2018): 1–9. http://dx.doi.org/10.1155/2018/6573016.

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This article presents the results of the study on the effect of nanomagnetite modification on textural characteristics of clay matrices, adsorption properties, and parameters of the spent sorbents separation. The nitrogen adsorption-desorption method has shown that the obtained magnetic nanocomposite sorbents have large specific surface areas (in 1.2–2 times more) than the initial clays due to the formation of the secondary porous structure on the surface and in macropores of clay matrices. The best adsorption properties with respect to dyes belong to magnetic sorbents with nanomagnetite conte

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2

Lakevičs, V., J. Brovkina, V. Stepanova, et al. "Solving Environmental Problems with Latvian Clay-Based Sorbents." Latvian Journal of Chemistry 51, no. 4 (2012): 389–97. http://dx.doi.org/10.2478/v10161-012-0029-4.

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Currently there is an increasing interest in application of natural clay minerals in production of various products, including sorbents for waste water treatment. For practical application of clay as a sorbent, it is significant not only to establish its properties, but also to be able to modify them. Only during the last twenty years, an increasing effort has been directed to systematic studies of clay sorption properties. A special attention has been devoted to improvement of clay sorption properties, which could allow to scientifically develop various sorbents for collection of oil products

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3

Kuznetsova, Ekaterina, and Nikolay Nevedrov. "Organo-mineral sorbents and their effect on the rate of carbon dioxide emission from the surface of agro dark gray soil." АгроЭкоИнфо 5, no. 59 (2023): 27. http://dx.doi.org/10.51419/202135527.

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The article presents data on the influence of sorbents on the dynamics of microbial respiration of agro dark gray soil. The rate of CO2 emission from soils treated with Keloway clay and sorbent based on sapropel and lime agrotem-gray soils increased by 72.8 83.5% relative to soils without sorbents. Keywords: SORBENT, SAPROPEL, LIME, HEAVY METALS, AGRO DARK GRAY SOIL, MICROBIOLOGICAL ACTIVITY

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4

Lu, Zhi Yan, and Qing Hai Guo. "Removal of Arsenic from Landfill Leachate by Selected Low-Cost Sorbents: An Experimental Study at the Zixiaguan Landfill of Wuhan City, Central China." Advanced Materials Research 356-360 (October 2011): 1427–32. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.1427.

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The leachate from the Zixiaguan landfill of Wuhan City contains a lot of undesirable or toxic chemicals, among which arsenic may have the most serious threat to environment and human health. Lowering the arsenic concentration in the leachate is therefore of extreme importance. In this study, natural sediments obtained from Wuhan City, including clay, silty soil and silty sand, were used as low-cost sorbents to remove arsenic from solution. The results of the batch sorption experiments indicate that the sorption processes of clay and silty sand match well with linear isothermal sorption model,

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5

Ishanova, M. N., A. A. Kadirbayeva, A. F. Minakovsky, and N. K. Sarybekova. "STUDY OF METHODS FOR ACTIVATING BENTONITE CLAY FROM THE DARBAZA DEPOSIT." Bulletin of Shakarim University. Technical Sciences, no. 3(15) (September 27, 2024): 313–21. http://dx.doi.org/10.53360/2788-7995-2024-3(15)-40.

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In our country, the problem of water treatment remains urgent, and this is facilitated by the growth of external factors, which can include the increase in the number of industrial enterprises, agricultural development, urban growth and others. Objective. To solve the problem of wastewater treatment it is economically advantageous to create new sorbents, from the resources available in our country. Instrumental test methods were chosen for bentonite clay treatment under experimental conditions using scanning electron microscope (SEM) Jeol JSM-6490l V, FTIR spectrometer NEXUS E.S.P. (Thermo Sci

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Abdugaffarova, Kristina K., Maksim V. Dorogov, Anatolii A. Vikarchuk, Vlada V. Zabolotskikh, and Vladislav S. Firsov. "New Sorption Materials on the Basis of Aluminosilicates for Wasterwater Treatment." Nano Hybrids and Composites 13 (January 2017): 190–96. http://dx.doi.org/10.4028/www.scientific.net/nhc.13.190.

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This article presents the results of experimental obtaining together with tests of modifications of the granulated sorption aluminosilicate-based material. The chemical composition, structure and morphology of a surface of the obtained modifications of sorbents from clay have been explored. Through a complex of modern physical methods it is established that porosity and a specific surface of clay-based sorbents increased as a result of modification. Pilot studies have shown higher efficiency of new aluminosilicate-based sorbents in comparison with absorbent carbon during sorption of such model

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7

Ishanova, M. N., A. A. Kadirbayeva, and N. K. Sarypbekova. "Research on the production of sorbent based on bentonite clay for wastewater treatment from chemical industries." Kompleksnoe Ispolzovanie Mineralnogo Syra = Complex Use of Mineral Resources 333, no. 2 (2024): 27–33. http://dx.doi.org/10.31643/2025/6445.14.

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In our country, the problem of water purification remains urgent, with the growth of external factors contributing to this, which can include an increase in the number of industrial enterprises, the development of agriculture, urban growth and others. To solve the problem of water purification it is economically advantageous to create new sorbents, with the available resources in our country.For the processing of of bentonite clay under experimental conditions, instrumental test methods were chosen using a scanning electron microscope (SEM) of the Jeol JSM-6490l V brand, a multi-parameter port

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8

Lhotka, M., V. Machovič, and B. Doušová. "Preparation of modified sorbents from rehydrated clay materials." Clay Minerals 47, no. 2 (2012): 251–58. http://dx.doi.org/10.1180/claymin.2012.047.2.08.

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AbstractThe use of clay materials as selective sorbents for different contaminants requires very efficient methods. A natural kaolinite was calcined to metakaolinite and than rehydrated at different temperatures to produce a highly porous sorbent. The kinetics of this process were measured, with subsequent IR characterization of the phases formed. The surface and pore distribution of new phases were also assigned. In addition, the kaolinite obtained was pre-treated with Fe3+ ions to improve its sorption affinity for anionic particles. The rehydrated kaolinite and its Fe-modification were used

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9

Eter Salukvadze Omar Lomtadze, Tsiala Gabelia, Leila Japaridze, and Nunu Shalvashvili. "New sorbents based on carbonized bentonite - Askan Clay." World Journal of Advanced Research and Reviews 25, no. 2 (2025): 2058–64. https://doi.org/10.30574/wjarr.2025.25.2.0450.

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The paper presents the results of obtaining medical sorbents, studying their physical and chemical characteristics and conducting clinical trials. Carbonized modifications of “Askan clay” (montmorillonite clay from the village of Askana) were obtained by heat treatment of a mixture of “Askan clay” and carbohydrates (glucose, molasses). Carbonization is accompanied by a sharp increase in the overall porosity of “Askan clay”. Samples of carbonized “Askan clay” are characterized by high exchange and sorption capacity. Sorption of cations and anions for carbonized samples occurs in the following s

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10

Bani, Siphumze, Janice Limson, Bongumusa M. Zuma, and Roman Tandlich. "Short Communication: Potential of Biochar And Clays as Sorbents For Treatment Of Greywater and Related Wastewaters in South Africa." Journal of Solid Waste Technology and Management 50, no. 2 (2024): 577–89. http://dx.doi.org/10.5276/jswtm/iswmaw/502/2024.577.

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Due to the issues of water scarcity, there is a need for formulation of technologies to remove various components wastewaters to produce water that can be reused for irrigation and toilet flushing. Local production of low-cost sorbents and their use in the treatment of greywater were examined in the current study. The aim was to assess whether different clays and/or biochar could be used the potential of the sorbents for greywater remediation. These sorbents were locally mined or sourced/produced in South Africa, and so they could provide a suitable and low-cost treatment option for the greywa

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11

Kussainova, B. M., G. K. Tazhkenova, and I. A. Kazarinov. "Physical and chemical properties of natural clay deposits." BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series 130, no. 1 (2020): 42–47. http://dx.doi.org/10.32523/2616-6771-2020-130-1-42-47.

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The problem of creating and using sorption materials is relevant for the practice of modern chemistry, biotechnology, medicine and agriculture. Knowledge of the physical and chemical laws of the processes of carbonation, activation, as well as sorption and desorption is of particular importance in the case of nanostructured carbon sorbent for highly effective treatment of water contaminated with pesticides, as well as for reducing the concentration of cytokines in the blood of patients with sepsis. It is of great practical importance to obtain adsorbents using a carbon sorbent to significantly

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12

Zango, Zakariyya Uba, Muhammad Nur’Hafiz Rozaini, Noor Hana Hanif Abu Bakar, et al. "Advancements in Clay Materials for Trace Level Determination and Remediation of Phenols from Wastewater: A Review." Separations 10, no. 2 (2023): 125. http://dx.doi.org/10.3390/separations10020125.

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The wide spread of phenols and their toxicity in the environment pose a severe threat to the existence and sustainability of living organisms. Rapid detection of these pollutants in wastewaters has attracted the attention of researchers from various fields of environmental science and engineering. Discoveries regarding materials and method developments are deemed necessary for the effective detection and remediation of wastewater. Although various advanced materials such as organic and inorganic materials have been developed, secondary pollution due to material leaching has become a major conc

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13

Silva, Andréa Lopes, Francisco Kegenaldo Alves de Souza, Gelmires Araújo Neves, Romualdo Rodrigues Menezes, Hélio Lucena Lira, and Lisiane Navarro de Lima Santana. "Preparation of Organovermiculite for Adsorption of Organic Compounds." Materials Science Forum 727-728 (August 2012): 1451–56. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.1451.

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Organically modified clay minerals are widely used as sorbents for hydrophobic organic compounds e.g., organic pollutants treatment from water solutions. Natural clay materials are hydrophilic and therefore they are not efficient sorbents for organic compounds. Intercalations of natural clay materials, with organic cations, with quaternary ammonium groups may become these clays hydrophobic. Vermiculite is the mineralogical name given to hydrated laminar magnesium-aluminum-iron silicate; this natural clay was modified and used for the production of organically modified clay (organovermiculite),

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14

Burahta, V. A., L. A. Churikova, N. N. Osipova, and A. V. Safina. "STUDY OF DEHYDRATION OF OIL-WATER EMULSIONS OF THE CHINAREVSKOE FIELD USING BENTONITE CLAYS." Petroleum Engineering 23, no. 3 (2025): 107–16. https://doi.org/10.17122/ngdelo-2025-3-107-116.

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The article studies a method for dehydrating oil-water emulsions from the Chinarevskoye oil and gas condensate field in Western Kazakhstan using local clay raw materials. Since flooding of productive formations in oil fields significantly complicates the technology of oil production, preparation and transportation, the task of finding cost-effective methods for oil dehydration based on the use of local clay rocks is urgent. The Pogodayevo field in the West Kazakhstan region is rich in clay raw materials, which include the mineral montmorillonite, which has pronounced sorption properties. A stu

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15

Sabadash, V. V., and Ya M. Gumnitsky. "Investigation of the process of fe (III) adsorption by methods of multidimensional cluster analysis." Chemistry, Technology and Application of Substances 4, no. 2 (2021): 145–50. http://dx.doi.org/10.23939/ctas2021.02.145.

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The results of the study of the adsorption capacity of a number of sorbents of natural and synthetic origin with respect to iron ions have been clustered. The sorption capacity of the following sorbents was studied: natural zeolite of the Sokyrnytsia deposit, synthetic sorbent based on the ash of Doborotvir heat power plant, Al2O3, SiO2, as well as some types of soils: sandy soil, black soil and clay. Equations describing the regularities of adsorption processes depending on the type of sorbent are obtained. According to the obtained dendrograms of the adsorption process, two main clusters of

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16

Baranchiyeva, Zarina, Gulziya Seilkhanova, and Akmaral Rakhym. "Analysis of the physicochemical and sorption characteristics of composites based on zeolite and chamotte clay." MATEC Web of Conferences 340 (2021): 01027. http://dx.doi.org/10.1051/matecconf/202134001027.

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Clays and aluminosilicate materials are known as effective sorbents for purification of wastewater from various types of contaminants. Some properties and sorption activity of materials based on the zeolite of Shankanai deposit and Chamotte clay towards Cd2+ ions were analyzed in the present work. The structural characteristics of the studied objects, their qualitative and quantitative composition were determined by the SEM and EDAX methods. It was found that maximum adsorption capacity (qe) of the initial zeolite for extraction Cd2+ ions is (7.3±0.11) mg/g, while for Chamotte clay this value

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17

Kornilovych, Borys, Iryna Kovalchuk, Viktoriia Tobilko, and Stefano Ubaldini. "Uranium Removal from Groundwater and Wastewater Using Clay-Supported Nanoscale Zero-Valent Iron." Metals 10, no. 11 (2020): 1421. http://dx.doi.org/10.3390/met10111421.

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The peculiarities of sorption removal of uranium (VI) compounds from the surface and mineralized groundwater using clay-supported nanoscale zero-valent iron (nZVI) composite materials are studied. Representatives of the main structural types of clay minerals are taken as clays: kaolinite (Kt), montmorillonite (MMT) and palygorskite (Pg). It was found that the obtained samples of composite sorbents have much better sorption properties for the removal of uranium from surface and mineralized waters compared to natural clays and nZVI.It is shown that in mineralized waters uranium (VI) is mainly in

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18

Nazarov, A. M., and L. Kh Araslanova. "NEW SORBENTS BASED ON INDUSTRIAL WASTE FOR WASTEWATER TREATMENT FROM PETROLEUM PRODUCTS." Problems of Gathering Treatment and Transportation of Oil and Oil Products, no. 3 (July 26, 2023): 195–204. http://dx.doi.org/10.17122/ntj-oil-2023-3-195-204.

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One of the most common types of ecotoxicants are petroleum products - an unidentified group of petroleum hydrocarbons and products of its processing. In this regard, the development of technology for obtaining new highly efficient and inexpensive sorbents for wastewater treatment from petroleum products (including those based on industrial waste) is an urgent problem. In this paper, a method of wastewater treatment from petroleum products using composite sorbents based on waste-tailings of Uchalinsky (SU), Buribaevsky (SB), Sibaysky (SS) mining and processing (GOK), and clay of the Talalaevsky

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19

Leontieva, T. G., L. N. Maskalchuk, A. A. Baklay, and N. A. Makovskaya. "Analysis of the influence of the aluminosilicate sorbents on the immobilization of <sup>137</sup>Cs in the cement compound and its mechanical strength." Proceedings of the National Academy of Sciences of Belarus. Physical-technical series 69, no. 1 (2024): 76–88. http://dx.doi.org/10.29235/1561-8358-2024-69-1-76-88.

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Studies have been carried out to determine the main parameters characterizing the quality of cement compounds: 137Cs leaching rate and mechanical strength. As sorption additives, aluminosilicate sorbents were used, obtained from clay-salt slimes of JSC “Belaruskali” as a result of water and acid-water treatment to increase the content of the clay mineral illite, which is the main component in the composition of aluminosilicate sorbents. Model aqueous solutions of 137Cs were used as liquid radioactive waste, including those with a NaNO3 content of 150 g/dm . It has been established that the use

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20

Kussainova, Bakytgul, Gaukhar Tazhkenova, Ivan Kazarinov, et al. "Adsorption of Bichromate and Arsenate Anions by a Sorbent Based on Bentonite Clay Modified with Polyhydroxocations of Iron and Aluminum by the “Co-Precipitation” Method." Molecules 29, no. 15 (2024): 3709. http://dx.doi.org/10.3390/molecules29153709.

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The physicochemical properties of natural bentonite and its sorbents were studied. It has been established the modification of natural bentonites using polyhydroxoxides of iron (III) (mod.1_Fe_5-c) and aluminum (III) (mod.1_Al_5-c) by the “co-precipitation” method led to changes in their chemical composition, structure, and sorption properties. It was shown that modified sorbents based on natural bentonite are finely porous (nanostructured) objects with a predominance of pores of 1.5–8.0 nm in size. The modification of bentonite with iron (III) and aluminum compounds by the “co-precipitation”

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Seilkhanova, Gulziya, Akmaral Rakhym, Anastasiya Kan, Aruzhan Kenessova, and Yitzhak Mastai. "The use of natural zeolite and chamotte clay-based sorbents for the extraction of sodium and potassium ions from saline water: a preliminary study." Chemical Bulletin of Kazakh National University, no. 2 (June 20, 2022): 44–53. http://dx.doi.org/10.15328/cb1276.

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In this work, sorbents based on natural zeolite (Z) and chamotte clay (ChC) treated with NaCl and HNO3 solutions were obtained to extract Na+ and K+ ions from saline water. The physicochemical characteristics of the obtained sorbents were studied by SEM, EDAX, and BET methods. It was found that successive treatment with NaCl and HNO3 solutions has a positive effect on the sorption properties of the studied materials. The maximum increase in the specific surface area from 4.5 m2/g to 39.3 m2/g is observed for acid-treated Z, and the specific surface area of ChC also increases almost 2-fold from

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22

Ansone-Bērtiņa, Linda, Marta Jemeļjanova, Māris Kļaviņš, Rūta Ozola-Davidāne, and Jorens Kviesis. "Clay-Humic Substance Composites for Removal of Pharmaceuticals from Water." Key Engineering Materials 850 (June 2020): 28–34. http://dx.doi.org/10.4028/www.scientific.net/kem.850.28.

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Humic substances are the main component of soil organic matter and they actively interact with substances in soils, including pollutants. Humic acid-clay mineral composite materials can be considered as prospective and low-cost sorbents for contaminant removal. The aim of this study is to develop clay mineral and humic acid composite materials and to characterise their possible applications. For this research, montmorillonite, kaolinite and bentonite were saturated with three types of humic substances: technical humic acid from lignite, humic substances extracted from raised bog peat (Latvia)

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Dzhigola, Lyudmila A., and Elizaveta A. Syutova. "Solid-phase concentration of calcium ions with mineral sorbents in creation of anti-icing materials." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 61, no. 9-10 (2018): 98–104. http://dx.doi.org/10.6060/ivkkt.20186109-10.5805a.

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The results of an experimental study of calcium ion adsorption processes carried out on various mineral sorbents of natural origin are presented. The sorption properties of the selected objects were studied and the possibility of their use as combined anti-icing materials was evaluated. In the work were investigated technological indicators of the quality of sorbents - the pH of the zero-charge point, the sorption capacity of sorbents and the optimum pH interval to determine the sorption activity of mineral raw materials on calcium ion. Analysis of the adsorption isotherms of calcium ions by t

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Shachneva, Evgeniya Yu. "OBTAINING SORBENTS BASED ON NATURAL MINERAL RAW MATERIALS." Journal of the Belarusian State University. Ecology., no. 2 (June 25, 2022): 66–74. http://dx.doi.org/10.46646/2521-683x/2022-2-66-74.

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The presented material shows the results of studies of sorbents obtained on the basis of natural mineral raw materials -the flask of the Astrakhan region. The role of technogenic impact on the process of environmental pollution is shown. The methods of obtaining new sorption materials based on natural formations, the main component of which is flask, which is a sedimentary siliceous rock, are considered. The structure of this natural mineral is described, consisting of 90 % fine-grained amorphous aqueous silica with admixtures of clay matter, carbonates, silicon organic residues, quartz, felds

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Albrektienė, Ramunė, and Dainius Paliulis. "Investigation of Lead Removal from Drinking Water Using Different Sorbents." Ecological Chemistry and Engineering S 27, no. 1 (2020): 67–82. http://dx.doi.org/10.2478/eces-2020-0004.

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AbstractLead is a heavy metal with strong toxic properties. This chemical element is found in wastewater and sometimes in drinking water. The article deals with the removal of lead(II) ions from polluted water using a sorption process to determine the most effective sorbent for the removal of lead(II) ions. Three sorbents were used in the research: clay, sapropel, and iron sludge. All three sorbents investigated reduce the concentration of lead(II) ions in water: clay efficiency was of 65.7–90 %, sapropel of 94.3–100 %, and iron sludge of 84.3–97 %, depending on sorbent type and contact durati

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Araslanova, Lyaysan, Elena Kuznetsova, Irene Tuktarova, and Alexey Nazarov. "Development of oil product contaminated wastewater treatment technology using sorbents based on mining waste." E3S Web of Conferences 161 (2020): 01030. http://dx.doi.org/10.1051/e3sconf/202016101030.

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One of the most common types of ecotoxicants is oil products - unidentified group of oil hydrocarbons and products of its processing. In this regard, the development of technology for obtaining new highly efficient and inexpensive sorbents for wastewater treatment from oil products (including industrial waste) is an urgent problem. In this paper, the technology of wastewater treatment includes the use of composite sorbents based on tails-waste of Uchalinsky (UW) and Buribaevsky (BW) mining and processing plants (MPP), mica quartzite (MQ) of the Baymak field and montmorillonite clay (MC) and so

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Makarchuk, Oksana, Tetiana Dontsova, Anatolii Perekos, Alexander Skoblik, and Yevhen Svystunov. "Magnetic Mineral Nanocomposite Sorbents for Wastewater Treatment." Journal of Nanomaterials 2017 (2017): 1–7. http://dx.doi.org/10.1155/2017/8579598.

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Magnetic nanocomposite sorbents for disposal of synthetic detergents from wastewater were synthesized. Obtained sorbents based on clay minerals (saponite, palygorskite, and spondyle clay) and magnetite were characterized by X-ray powder diffraction, Mössbauer spectroscopy, and ballistic method with Steinberg magnetometer. As a result, the average crystallite sizes of Fe3O4 nanoparticles in magnetic nanocomposites were 2–10 nm. Magnetic nanocomposites had superparamagnetic properties and were classified as soft magnetic materials. Comparison of sorption properties showed that magnetic composite

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Husenov, Kakhramon, Togaymurot Aliev, Norbek Allayorov, Maftuna Ibragimova, Zokir Karimov, and Zamira Abdiramanova. "Obtaining sorbents based on bentonite and wastewater treatment of hydrometallurgical plants." E3S Web of Conferences 548 (2024): 04007. http://dx.doi.org/10.1051/e3sconf/202454804007.

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Methods of physico-chemical analysis of the composition of industrial wastewater and the use of sorption materials obtained on the basis of compositions of various chemical reagents with local minerals have been developed. The physicochemical and mechanical properties of the newly obtained composite materials have been studied. The composition of bentonite of the Navbakhor mine consists mainly of polygorskite carbonate, the general chemical composition consists of the following clays: Mg2Al2[Si8O20](OH)2·8H2O·CaCO3. Bentonite also contains kaolinite Al4[Si].4O10]·(OH)8, polymorphic modificatio

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Švinka, Ruta, and Visvaldis Švinka. "Celtniecības keramika, keramzīts un keramiskie sorbenti." Materials Science and Applied Chemistry 35 (November 1, 2018): 30–61. http://dx.doi.org/10.7250/msac-2018-0002.

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Vēsturiski viena no silikātu tehnoloģijas katedras pamattēmām vienmēr ir bijusi celtniecības materiālu pētīšana un jaunu materiālu izstrāde. Tie ir gan keramikas materiāli, gan materiāli uz neorganisko javu saistvielu bāzes. Ir analizētas un salīdzinātas šo materiālu īpašības: siltuma vadāmība, līdzsvara mitrums, mehāniskās īpašības. Salīdzinātas rūpnieciskos apstākļos un laboratorijā iegūtu dažādu Latvijas mālu keramikas materiālu īpašības un struktūra. Aprakstīta dažu rūpniecisko atkritumu ietekme uz keramikas materiālu īpašībām. Aprakstīta arī jauna keramikas materiāla keramzīta ražošanas t

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Bakalár, Tomáš, Milan Búgel, Henrieta Pavolová, and Gabriel Müller. "Influence of Transmembrane Pressure on Microfiltration of Suspensions." Advanced Materials Research 788 (September 2013): 152–55. http://dx.doi.org/10.4028/www.scientific.net/amr.788.152.

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The influence of transmembrane pressure on the permeate flux, and the critical and limiting fluxes in microfiltration of two sorbents Bentonite a natural sorbent, montmorillonite based clay and Lewatit S1468 a synthetic sorbent, styrene-divinylbenzene based copolymer were studied. An asymmetric single-channel inorganic ceramic membrane based on α-Al2O3 was used. The experimental data were obtained by continuous microfiltration equipment. According to the results the limiting flux ranged from 37 to 70 l.m-2.h-1 for Bentonite suspensions. It was not possible to estimate the limiting flux for Lew

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Olivelli, Melisa Soledad, Daniel Di Gregorio, Hugo Huck, Jorge Fernández Niello, Rosa María Torres Sánchez, and Gustavo Curutchet. "Characterization of U(VI) Sorption and Leaching on Clay Supported Biomass Sorbents." Advanced Materials Research 825 (October 2013): 532–35. http://dx.doi.org/10.4028/www.scientific.net/amr.825.532.

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In previous studies was demonstrated that matrixes generated from fungal biomass and a montmorillonite (BMMTs) are efficient as biosorbentes in batch uranium removal systems. The objective of this article is to evaluate the U(VI) sorption capacity of BMMT in continuous systems for its removal from effluents and to determine the reusability of the sorbent and the recovery of the uranium testing different leaching solutions. Upflow BMMT columns were performed in order to optimize the system for continuous sorption techniques. For upflow columns, the maximum total amount of U(VI) retained was 75

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Bahmanova, F. N. "Sorption-photometric definition of thorium (IV) in clays." Industrial laboratory. Diagnostics of materials 88, no. 5 (2022): 22–26. http://dx.doi.org/10.26896/1028-6861-2022-88-5-22-26.

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A simple and selective method for sorption-photometric determination of thorium (IV) micro amounts in clay using a new chelating sorbent, a copolymer of maleic anhydride with styrene modified with N1,N1,N2-triphenylguanidine, is proposed. The sorbent is white substance, insoluble in water, acids, weak alkalis and organic solvents. Sorbents were first ground in an agate mortar and sieved through a sieve (0.14 mm). The effect of pH of the medium, the ionic strength of the solution, contact time of the phases, concentration of thorium (IV) in the solution and on the sorption was studied under sta

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Cristiani, Cinzia, Maurizio Bellotto, Giovanni Dotelli, et al. "Rare Earths (La, Y, and Nd) Adsorption Behaviour towards Mineral Clays and Organoclays: Monoionic and Trionic Solutions." Minerals 11, no. 1 (2020): 30. http://dx.doi.org/10.3390/min11010030.

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Metals from electric and electronic waste equipment (WEEE) can be recovered by dissolution with acids followed by liquid–liquid extraction. A possible alternative to liquid–liquid extraction is liquid–solid adsorption, where sorbents efficiency is the key factor for process efficiency. In this respect, aim of this paper is the study of the behaviour of two solid sorbents for the recovery of Rare Earths (REs)—in particular, La, Nd, and Y—from scraps of end-of-Life (EOL) electronic equipment. Two solid matrices were considered: a pristine montmorillonite clay and a modified-montmorillonite clay

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Bakalár, Tomáš, Milan Búgel, Henrieta Pavolová, and Gabriel Müller. "Influence of Inner Configuration of Membrane on Microfiltration of Suspensions." Advanced Materials Research 781-784 (September 2013): 2305–10. http://dx.doi.org/10.4028/www.scientific.net/amr.781-784.2305.

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The influence of membrane type on the permeate flux in microfiltration of two sorbents Bentonite a natural sorbent, montmorillonite based clay and Lewatit S1468 a synthetic sorbent, styrene-divinylbenzene based copolymer was studied. Two types of membranes, single-and multi-channel, both asymmetric inorganic ceramic membranes based on α-Al2O3, were used. The experimental data were obtained by continuous microfiltration equipment. According to the results use of multi-channel membrane has more advantages higher permeate flux, lower energy consumption, and lower flow rate than disadvantages long

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Oladele, Johnson O., Meichen Wang, Xenophon Xenophontos, Kendall Lilly, Phanourios Tamamis, and Timothy D. Phillips. "Chlorophyll-Amended Organoclays for the Detoxification of Ochratoxin A." Toxins 16, no. 11 (2024): 479. http://dx.doi.org/10.3390/toxins16110479.

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Climate change has been associated with outbreaks of mycotoxicosis following periods of drought, enhanced fungal growth, and increased exposure to mycotoxins. For detoxification, the inclusion of clay-based materials in food and drinking water has resulted in a very promising strategy to reduce mycotoxin exposure. In this strategy, mycotoxins are tightly sorbed to high-affinity clay particles in the gastrointestinal tract, thus decreasing bioavailability, uptake to blood, and potential toxicity. This study investigated the ability of chlorophyll and chlorophyllin-amended montmorillonite clays

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Стрелков, А. К., С. В. Степанов, О. Н. Панфилова, and А. В. Арбузов. "Removing heavy metals from effluents with natural and modified clay-containing sorbents." Vodosnabzhenie i sanitarnaia tehnika, no. 5 (May 24, 2021): 30–37. http://dx.doi.org/10.35776/vst.2021.05.03.

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Представлены результаты исследований сорбции ионов тяжелых металлов глиносодержащими сорбентами из сточных вод гальванического производства. Цель испытаний, проведенных на пилотной установке, – разработка технологической схемы для доочистки сточных вод от ионов тяжелых металлов и извлечения отработанного сорбента с применением намывного патронного фильтра со слоем перлита. В испытаниях использовались: термически модифицированный сорбент на основе природных материалов – модифицированная глина, а также смесевый сорбент, состоящий из монтмориллонита, торфа и доломита в соотношении 5:4:1 без терми

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Yessengeldi, A. M., A. A. Yessengulova, G. Zh Kayralapova, R. S. Iminova, and M. M. Beysebekov. "Obtaining of surface-active substance sorbents based on acrylate-clay polymers." International Journal of Biology and Chemistry 10, no. 2 (2017): 4–9. http://dx.doi.org/10.26577/2218-7979-2017-10-2-4-9.

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Cosin, Shirley, Carolina A. Pinto, P. Souza Santos, and Francisco Rolando Valenzuela-Díaz. "Complex Carbon-Mineral Sorbents from Common Clay." Materials Science Forum 498-499 (November 2005): 734–39. http://dx.doi.org/10.4028/www.scientific.net/msf.498-499.734.

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Carbon/mineral complexes are materials with surfaces covered partially or totally by carbon materials contains. They have high industrial potential uses as material adsorbents and ceramic filters. The objective of this work is to evaluate the corrosion strength in acid and alkaline solutions, and the adsorption capacity of methylene blue of some materials prepared in the LMPSol. The compositions were prepared with an industrial common clay named “taguá” and organic and inorganic additives from industrial residues up to 50%. The corrosion test was performed in water at 60°C and in aqueous solut

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Bahabadi, Fatemeh Nasseri, Mohammad Hady Farpoor, and Majid Hejazi Mehrizi. "Removal of Cd, Cu and Zn ions from aqueous solutions using natural and Fe modified sepiolite, zeolite and palygorskite clay minerals." Water Science and Technology 75, no. 2 (2016): 340–49. http://dx.doi.org/10.2166/wst.2016.522.

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Metal ions such as Cu, Cd, and Zn are toxic and considered as hazardous pollutants due to their stability in the environment. In this study, the natural and Fe (III) modified sepiolite, palygorskite, and zeolite clay minerals were used for the removal of Cu, Zn, and Cd ions from aqueous solutions. The iron chloride 1 M was used for mineral modification and the capacity of sorbent was assessed in a batch experiment containing six starting concentration of sorbents ranging from 10 mg L−1 to 140 mg L−1. Results of the study showed higher removal efficiency for modified compared to natural clays.

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Avezov, Khasan. "On the effect of thermal activation on the surface chemistry of natural mineral sorbents." BIO Web of Conferences 130 (2024): 06002. http://dx.doi.org/10.1051/bioconf/202413006002.

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The article discusses adsorbents, their characteristic features, structural sizes, geometric forms, porosity, the concept of porosity and the influence of their thermal activation on the structure and sorption parameters of natural mineral sorbents - Angren kaolin and Azkamar bentonite. Here is given the chemical composition of kaolin and bentonite clay samples before and after thermal activation. Thermal activation of kaolin clay at 1023K is shown, which has almost no effect on the content of basic oxides in the clay mineral. It leads to the removal of adsorbed moisture and partially constitu

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Kabdrakhmanova, Sana K., Aigul Z. Kerimkulova, Saule Z. Nauryzova, et al. "Bentonite-Based Composites in Medicine: Synthesis, Characterization, and Applications." Journal of Composites Science 9, no. 6 (2025): 310. https://doi.org/10.3390/jcs9060310.

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One of the most interesting and poorly studied carriers of medicinal substances is the polymer clay composite material (PCCM). Bentonite clays are used in pharmacy for the manufacturing of various dosage forms, as well as in the adsorption of drugs to slow their release. Polymer–clay nanocomposites have demonstrated significantly improved properties compared to pure polymers. A review of recent scientific advances has shown promising results regarding the application of polymer–clay materials in medicine and bioengineering, particularly in the development of carrier sorbents with prolonged act

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Мухторова, Нигора Бахрамовна Алиев Боходир Абдуганиевич Сабиров Бахтиёр Тухтаевич. "INVESTIGATION OF THE CHEMICAL AND MINERALOGICAL COMPOSITION OF SHAFIRKAN BENTONITE CLAY FOR THE PRODUCTION OF NEW SORBENTS." "Science and innovation" international scientific journal. ISSN: 2181-3337 1, no. 3 (2022): 168–75. https://doi.org/10.5281/zenodo.6790073.

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<em>The chemical and mineralogical composition of Shafirkan bentonite clay for the production of sorbents was studied. Microscopic studies of samples of bentonite clays were carried out using an MBS-10 optical microscope in transmitted and polarized light with an installed digital camera with a magnification factor of up to 600 s. The study of the phase composition of samples of bentonite clays of the Shafirkan deposit was carried out by the X-ray method of analysis.</em>

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Khomenko, O. M., O. V. Yehorova, and O. O. Mysliuk. "Analysis of sorption capacity of natural sorbents in relation to aqueous solutions of heavy metal compounds." Ukrainian hydrometeorological journal, no. 28 (December 14, 2021): 111–19. http://dx.doi.org/10.31481/uhmj.28.2021.10.

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The main preconditions emergence of an environmental crisis in the country due to surface water pollution include irrational use of water resources in violation of the environmental requirements, discharge of untreated and insufficiently treated industrial and municipal wastewater into water bodies and inflow of polluting substances from agricultural lands as a result of surface water drainage. The whole set of considered factors leads to depletion and pollution of surface water of Ukraine, reduction of their self-cleaning capacity, degradation, impoverishment and collapse of aquatic ecosystem

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Aghahuseynova, Minira, and Leyla Vazirova. "Development of environmentally-friendly modified bioadsorbents for water treatment." EUREKA: Physics and Engineering, no. 6 (November 30, 2023): 12–20. http://dx.doi.org/10.21303/2461-4262.2023.003164.

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As a result of scientific research, it was found that synthesized pure sorbents based on a composite of Fe3O4 nanoparticles and AlgBT have an increased adsorption capacity due to the inclusion of double hydroxides and an alginate matrix. The processes of complex formation occur according to the principle of maximum inheritance of the structural features of the original coordination compounds, which make it possible to predict and implement the hypothetical structures of new compounds. All this significantly improves the adsorption capacity of the developed adsorbents with respect to phosphate

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Thomas, Eapen, Krishnan G. Rekha, Soundiraraju Bhuvaneswari, Kunduchi P. Vijayalakshmi, and Benny K. George. "1,3-Dialkylimidazolium modified clay sorbents for perchlorate removal from water." RSC Advances 6, no. 83 (2016): 80029–36. http://dx.doi.org/10.1039/c6ra18107d.

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Marysyk, S. V. "DETERMINATION OF HYDRAULIC GRAIN SIZE OF NATURAL AND ARTIFICIAL SORBENTS FOR SIMULATION OF SETTLE FACILITY." Міжвідомчий тематичний науковий збірник "Меліорація і водне господарство", no. 2 (December 21, 2022): 94–99. http://dx.doi.org/10.31073/mivg202202-346.

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In the conditions of progressive contamination of surface sources of water supply and inefficient wastewater treatment when using existing water treatment technologies, the research problem and the justification of the use of sorption materials for the retention of specific pollutants, in particular heavy metal ions and radionuclides, is urgent. The parameters that determine the efficiency of sorbents are indicators of their sedimentation rate. The purpose of the experiments was to determine the sedimentation rate indicators for bentonite and copper ferrocyanide, build sorbent sedimentation gr

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Barrer, R. M. "Clay minerals as selective and shape-selective sorbents." Pure and Applied Chemistry 61, no. 11 (1989): 1903–12. http://dx.doi.org/10.1351/pac198961111903.

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B.A.Madatov, B.T.Sabirov U.Sh.Temirov F.E.Umirov. "COMPARATIVE STUDY OF PHYSICAL AND TECHNICAL PROPERTIES OF BENTONITE CLAY POWDERS VARIOUS DEPOSITS." INTERNATIONAL BULLETIN OF ENGINEERING AND TECHNOLOGY 3, no. 7 (2023): 60–66. https://doi.org/10.5281/zenodo.8153255.

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This article presents the results of studies on the comparative study of the physical and technical properties of some samples of bentonite clay powders used as a plasticizing clay component and a binder in the preparation of drilling fluids, molding sands and sorbents for industrial wastewater treatment. Based on the results of the experiment, it was found that the modification of the alkaline earth form of bentonite clay with soda ash improves the basic physical and technical properties of bentonite clay.

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J.K., Zokirbekov, Aliev B.A., and Egamberdiev E.A. "EFFECT OF TEMPERATURE ON SORBENTS." Innovative Development in Educational Activities 2, no. 10 (2023): 158–61. https://doi.org/10.5281/zenodo.7989033.

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<em>The information presented in this work is of great practical importance. With its help, the production process of sorbents for wastewater treatment becomes easier and does not require a lot of time, thereby helping the ecological development of the Republic of Uzbekistan. The experiments carried out during this work allow us to open the prospects of using natural clay materials, thiourea and polyethyleneimine for efficient and ash treatment of waste water of industrial enterprises.</em>

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Badmaeva, S. V., S. Ts Khankhasaeva, and M. V. Ukhinova. "Natural clays as effective sorbents of anthropogenic pollutants." IOP Conference Series: Earth and Environmental Science 885, no. 1 (2021): 012060. http://dx.doi.org/10.1088/1755-1315/885/1/012060.

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Abstract In this work, the adsorptive properties the Tuldon deposit were studied using the example of the adsorption of the basic dye “Methyl Green” from aqueous solutions. It has been established that the kinetic regularities of the dye adsorption on clay are consistent with the model of the kinetics of the pseudo-second order, characteristic of chemisorption. The isotherm of the dye adsorption is in good agreement with the Langmuir model. The results of the study allow us to conclude that the clay of the Tuldon deposit can be an effective sorbent for removing basic dyes from aqueous media.

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