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Journal articles on the topic 'Freindlich'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Семён Борисович, Скигин,. "Alisa Freindlich, or Concert on the Christmas Eve." Музыкальная академия, no. 4(780) (December 26, 2022): 240–47. http://dx.doi.org/10.34690/284.

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Алиса Фрейндлих, вопреки законам времени, не теряя обаяния и привлекательности, ведет диалог со сцены и с экрана уже с несколькими поколениями зрителей и слушателей. Пианисту Семёну Скигину посчастливилось сотрудничать с Алисой Бруновной, выйти с ней на концертную эстраду, осуществив свою давнюю мечту — вернуть на русскую сцену Рождество, Библию. Сегодня это звучит как само собой разумеющееся, но полстолетия назад требовалось известное мужество, чтобы громко заявить: «Я — человек глубоко верующий!» О том, как это произошло, о музыкальной жизни Ленинграда восьмидесятых годов минувшего века и ра

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2

Taifi, Ahmed, Ola Kamal A. Alkadir, Athraa A. Oda, et al. "Biosorption by Environmental, Natural and Acid-Activated Orange Peels as Low-Cost Aadsorbent: Optimization of Disperse Blue 183 as a Model." IOP Conference Series: Earth and Environmental Science 1029, no. 1 (2022): 012009. http://dx.doi.org/10.1088/1755-1315/1029/1/012009.

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Abstract In this research, agricultural waste was used as effective, environmentally friendly and inexpensive adsorbents one type of agricultural waste such as orange peels ( NOP) to remove Disperse Blue 183 dye from its aqueous solution in this study using three kind Natural orange peels ( NOP), Activated Carbon Orange Peels (ACOP) and Acid-Activated Carbon Orange Peels ( AACOP). Preparation of acid-activation Orange Peel (AACOP) using 0.1N phosphoric acid, where the adsorption efficiency of NOP, ACOP and AACOP synthesis were 120.22, 125.67 and 155.12 mg/g and removal percentage E% (80.21%,92

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3

Korel'skaya, Tat'yana Aleksandrovna, Ekaterina Aleksandrovna Zhuravleva, Elena Anatolievna Ayvazova, Natal'ya Aleksandrovna Onokhina, and Natal'ya Aleksandrovna Zubova. "SORPTION ABILITY OF SAMPLES OF HUMIC ACIDS AND THEIR SODIUM SALTS WITH RESPECT TO Cd2+ IONS." chemistry of plant raw material, no. 1 (March 13, 2023): 333–41. http://dx.doi.org/10.14258/jcprm.20230111391.

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The paper presents an analysis of the sorption properties of humic acids and their sodium salts isolated from high-moor peat of the Arkhangelsk region with respect to Cd2+ ions at various pH values. Using adsorption isotherms, the volumetric capacity of the studied preparations was calculated. Langmuir and Freindlich mathematical models were used to quantify the sorption capacity of preparations. Calculation of mathematical models of Langmuir and Freindlich sorption, as well as statistical data processing was carried out using Microsoft Office for Windows, Excel, 2016 software. their sodium sa

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4

Kurmangazhi, Gul'narkhan, Sagdat Tazhibayeva, Kuanyshbek Musabekov, and B. Zhakipbayev. "Parameters of adsorption of methylene blue on the magnetite-flask composite surface." Chemical Bulletin of Kazakh National University, no. 1 (March 30, 2018): 10–15. http://dx.doi.org/10.15328/cb1002.

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Magnetite and magnetite-flask composites were synthesized by the Elmore method. The inclusion of magnetite particles into the structure of the flask is justified by methods of IR spectroscopy and X-ray phase analysis. On the IR spectrum of the composite the peaks characteristic of Fe-O of the magnetite were found at the oscillation frequency of 1402 cm-1. Comparison of diffraction patterns of the flask, magnetite and composite showed the appearance on the diffraction pattern of the system magnetite-silica maxima at values of 2θ and the 37.15, 43.37 characteristic of Fe3O4. In addition, the dec

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5

Pechishcheva, N. V., A. D. Korobitsyna, and O. V. Melchakova. "Features of gallium sorption on mechanoactivated titanium dioxide." Transaction Kola Science Centre 11, no. 3-2020 (2020): 97–103. http://dx.doi.org/10.37614/2307-5252.2020.3.4.021.

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The features of sorption of gallium from aqueous solutions on mechanically activated TiO2(rutile) were studied. The dependence of the degree of sorption on the time of mechanical activation is obtained. The experimental sorption isotherms at temperatures from 20 to 50 ºСwere processed by adsorption models of Langmuir, Freindlich, Dubinin —Radushkevich. To achieve sorption equilibrium depending on temperature, 10–30 minutes are required. Dependence of sorption on time is better described by the kinetic model of the pseudo-second order. According to the Arrhenius equation, the activation energy

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6

Stepova, K., L. Sysa, and R. Konanets. "Nonlinear Fitting of Iron Sorption on Bentonite to Theoretical Isotherm Models." Physics and Chemistry of Solid State 23, no. 2 (2022): 270–76. http://dx.doi.org/10.15330/pcss.23.2.270-276.

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A comparative analysis of adsorption models application for the description of experimental isotherms of iron adsorption on two samples: natural bentonite and bentonite irradiated with microwave irradiation. Sorption isotherms are described using the theories of Langmuir, Freundlich, Redlich-Peterson and Langmuir-Freundlich. The constants and parameters of these equations are determined. Nonlinear fitting of experimental data to the theoretical models of isotherms showed that adsorption by native bentonite corresponds to the three-parameter Redlich-Peterson model, and microwave irradiated - to

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7

Bauer, Tatiana, Tatiana Minkina, Saglara Mandzhieva, Marina Burachevskaya, and Maria Zharkova. "Biochar application to detoxification of the heavy metal-contaminated fluvisols." E3S Web of Conferences 175 (2020): 09009. http://dx.doi.org/10.1051/e3sconf/202017509009.

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Sorption of heavy metals on solid matrices such as soils is one of the key processes which determine the fate of contaminants in the environment. Knowledge of adsorption behavior of heavy metals using biochar is essential for their application in soil remediation. Using the adsorption method, the possibility of using a wood biochar to detoxify Fluvisols contaminated with heavy metals (for example, copper) was studied. It is shown that the addition of biochar increases the metal adsorption capacity of soil. The results were analysed using the Langmuir and Freindlich isotherm equations. It was c

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8

Sverguzova, S. V., I. G. Shaikhiev, Zh A. Sapronova, A. V. Svyatchenko, and N. A. Ushakova. "Physicochemical and Sorption Characteristics of the <i>Hermetia illucens</i> Fly Pupal Cuticle." Известия Российской академии наук. Серия биологическая, no. 4 (July 1, 2023): 339–45. http://dx.doi.org/10.31857/s1026347022601047.

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Physicochemical and sorption characteristics of the Black Soldier fly pupal cuticle have been studied. The qualitative and granulometric compositions of chitin material were determined, and the surface microrelief of chitin particles was studied by scanning microscopy. The sorption properties of the material were studied using the methylene blue dye. It was found that the sorption capacity of the material is 0.118 mmol/g, or about 38 mg/g. Mathematical processing of the sorption isotherm using the Langmuir, Freindlich, Dubinin-Radushkevich models showed that the process is best described by th

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9

Svyatchenko, A. V., Zh A. Sapronova, and S. V. Sverguzova. "ANALYSIS OF THE FEATURES OF MODEL WATERS PURIFICATION FROM COPPER AND NICKEL IONS BY HEAT-TREATED CELLULOSE-CONTAINING MATERIAL." Izvestiya of Samara Scientific Center of the Russian Academy of Sciences 25, no. 6 (2023): 174–80. http://dx.doi.org/10.37313/1990-5378-2023-25-6-174-180.

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Adsorption is known as one of the traditional wastewater treatment methods, which is considered effective against heavy metals. At present, plant wastes are often studied as a raw material for inexpensive sorbents obtaining. The article analyzes the effectiveness of a sorption material use obtained by cellulose-containing waste thermal modification in relation to copper and nickel ions. It was established that sorption has a physical character, the maximum sorption capacity for Cu2+ ions was 0.320 mmol/g, for Nu2+ ions 0.342 mmol/g. The processing of the isotherm using the mathematical models

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10

Rogova, O., and Yu Vodyanitsky. "ZINC AND COPPER SORPTION IN THE AFFECTED SOILS OF THE CHEREPOVETS METALLURGICAL COMPLEX." Dokuchaev Soil Bulletin, no. 65 (June 30, 2010): 65–74. http://dx.doi.org/10.19047/0136-1694-2010-65-65-74.

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The laws of zinc and copper absorption by agrarian and carbonate soils in the area of Cherepovets Steel Mill are described. Sorption isotherms demonstrate high affinity of PPK of the studied soils to zinc and copper. Approximation of experimentally obtained isotherms by three methods: Freindlich, Lengmyur, Dabinin-Radushkevich. It is shown that Langmur's model cannot to be applied to most isotherms. The Dibininin model -Raduskevich well approximates the obtained data and enables thermodynamic characteristics of the adsorption process. According to the obtained indicators, the most significant

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11

Bezhin, Nikolay A., Iuliia G. Shibetskaia, Ol’ga N. Kozlovskaia, Evgeniy V. Slizchenko, and Ivan G. Tananaev. "7Be Recovery from Seawater by Sorbents of Various Types." Materials 16, no. 11 (2023): 4088. http://dx.doi.org/10.3390/ma16114088.

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For the first time, a comprehensive study of sorbents based on manganese dioxide was carried out for beryllium sorption from seawater in laboratory and expeditionary conditions. The possibility of using several commercially available sorbents based on manganese dioxide (Modix, MDM, DMM, PAN-MnO2) and phosphorus(V) oxide (PD) for 7Be recovery from seawater for solving oceanological problems was evaluated. Beryllium sorption under static and dynamic conditions was studied. The distribution coefficients and dynamic and total dynamic exchange capacities were determined. Sorbents Modix (Kd = (2.2 ±

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12

Geidarov, A. A., N. I. Abbasova, Sh E. Bakhramova, Z. A. Jabbarova, R. Y. Badalova та G. I. Alyshanly. "ADSORPTION OF IRON(III) IONS FROM SULFURIC ACID SOLUTIONS BY DOWEX G-26 RESIN (Н)". Azerbaijan Chemical Journal, № 1 (22 лютого 2024): 52–59. http://dx.doi.org/10.32737/0005-2531-2024-52-59.

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The adsorption of iron (III) from sulfuric acid solutions on a strongly acidic cation-exchange resin Dowex G-26 (H) has been studied. The factors influencing the adsorption of iron (III) have been investigated: solution pH, contact duration, adsorbent dose, initial concentration of iron (III) in solution. The obtained results show that Dowex G-26 (H) resin has a high exchange capacity for iron (III) ions from sulfuric acid solutions. Complete adsorption of iron (III) was achieved at pH2 (99%). Based on the experimental results, Langmuir and Freindlich adsorption isotherms have been constructe

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13

Bezhin, Nikolay A., Vitaliy V. Milyutin, Natalia V. Kuzmenkova, et al. "Radionuclides’ Recovery from Seawater Using FIC and FIC A Sorbents." Materials 16, no. 11 (2023): 4181. http://dx.doi.org/10.3390/ma16114181.

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To solve radioecological and oceanological problems (estimate the vertical transport, flows of particulate organic carbon, phosphorus biodynamics, submarine groundwater discharge, etc.), it is necessary to determine the natural values of the radionuclides’ activity in seawater and particulate matter. For the first time, the radionuclides’ sorption from seawater was studied using sorbents based on activated carbon modified with iron(III) ferrocyanide (FIC) and based on activated carbon modified with iron(III) hydroxide (FIC A—activated FIC) obtained by FIC sorbent treatment with sodium hydroxid

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14

Kadum, Ali, Irina Burakova, Elina Mkrtchyan, et al. "Sorption kinetics of organic dyes methylene blue and malachite green on highly porous carbon material." Journal of Advanced Materials and Technologies 8, no. 2 (2023): 130–40. https://doi.org/10.17277/jamt.2023.02.pp.130-140.

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In the article, the purpose of the research was to determine the important parameters of the organic compounds sorption – synthetic dyes methylene blue (MB) and malachite green (MG), on mesoporous carbon (MPC) from aqueous solutions in a limited volume. For the sorbent used, the elemental composition and the BET surface area were determined by nitrogen adsorption, which amounted to 2360 m2⋅g–1. Absorption mechanisms were analyzed using kinetic dependences and sorption isotherms, for which empirical equations of pseudo-first and -second order, the Elovich equation and the intraparticle diffusio

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15

Bzhikhatlova, Madina Anatol'yevna, Lidiya Petrovna Mykots, Nina Aleksandrovna Tukhovskaya, and Ol'ga Andreyevna Andreyeva. "STUDY OF THE SORPTION ABILITY OF NATURAL SORBENTS ISOLATED FROM THE CAMPSIS RADICANS." chemistry of plant raw material, no. 1 (March 16, 2021): 71–78. http://dx.doi.org/10.14258/jcprm.2021016618.

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Currently, more and more chemical additives are used in food products, which leads to the accumulation of harmful substances in the body. Therefore, it is relevant to search for new substances of natural origin with detoxification properties. The aim of the work was to determine the sorption ability of pectin substances and water-soluble polysaccharides isolated from the leaves and flowers of the campsis radicans. By the method of N.K. Kochetkova and M. Sinner isolated polysaccharides from water-borne campsis leaves and flowers: water-soluble polysaccharides, pectin, hemicellulose A and hemice

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16

Niftaliev, S. I., E. M. Gorbunova, A. V. Timkova, K. B. Kim, and V. N. Danilov. "Sorption of ammonium by fibrous sorbent VION KN-1." Proceedings of the Voronezh State University of Engineering Technologies 85, no. 1 (2023): 221–32. http://dx.doi.org/10.20914/2310-1202-2023-1-221-232.

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The results of studies of the sorption extraction of ammonium ions from aqueous media by the fibrous sorbent VION KN-1 are presented. Weak acid ion exchange fiber. It has been established that the limiting step in the process of ammonium ion sorption is internal diffusion. The kinetic parameters of the sorption process are calculated, with the identification of a decrease in the half-sorption time and an increase in the internal diffusion coefficient. The applicability of the Langmuir and Freindlich models for describing the experimental isotherms of ammonium ion sorption by fiber has been stu

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17

Lysenko, А. V., Т. A. Molokoedova, and Yu V. Sokolova. "Isotherms of the Sorption of Fe2+, Fe3+ Ions by Industrial Waste from Aqueous Solutions." Proceedings of the Southwest State University. Series: Engineering and Technology 13, no. 2 (2023): 235–49. http://dx.doi.org/10.21869/2223-1528-2023-13-2-235-249.

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The purpose of this work was to study the isotherms of the process of sorption of Fe2+, Fe3+ ions by industrial waste from aqueous solutions.Methods. As a sorbent, technogenic wastes from sugar production (defecation mud of Lgovsky Sugar Plant JSC), leather industry (chrome shavings from the Kursk Tannery OOO Kursk Kozha) and aviation instrumentation enterprises (galvanic sludge from Aviaavtomatika JSC named after V.V. Tarasova"). Fe2+, Fe3+ ions were chosen as sorbates, since the problem of iron removal is especially relevant for the Kursk region, due to the conditions of formation and the pe

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18

Korotkova, T. G., A. M. Zakolyukina, and S. A. Bushumov. "Study of the efficiency of water treatment from ammonium ions by a calcined sorbent from ash-and-slag waste." Theoretical and Applied Ecology, no. 4 (December 18, 2023): 99–109. http://dx.doi.org/10.25750/1995-4301-2023-4-099-109.

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Experimental studies of sorption on water treatment from ammonium ions by a calcined sorbent based on ash-and-slag waste from thermal power engineering have been carried out. The calcined sorbent was obtained by calcining samples of ash-and-slag from coal combustion at the Novocherkassk State District Power Plant at a temperature of 600 оC for 30 min. The sorption capacity of a sorbent with a dose of 2.0 g per 50 mL of a model solution, a stirrer speed of 200 rpm, pH 7, and sorption time from 10 to 180 minutes was studied. The influence of the initial concentration of model solutions with the

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19

Dzhigola, Lyudmila A., Olga S. Sadomtseva, Victoria V. Shakirova, et al. "APPLICATION OF ADSORPTION MODELS FOR DESCRIPTION OF BALANCES IN THE SYSTEMS «CATIONS OF COPPER (II) AND LEAD (II) – NATURAL MATERIALS OF ASTRAKHAN REGION »." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 61, no. 9-10 (2018): 105–12. http://dx.doi.org/10.6060/ivkkt.20186109-10.5806a.

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I In the work there were studied the regularities of extracting copper (II) and lead (II) cations from aqueous solutions with the help of natural sorbents from the Astrakhan region such as the marl of the Baskunchak deposit, the Kamennyy yar deposit and the clay of the Volzhsky deposit. A comparative study was made of the applicability of the adsorption models of Langmuir, Freindlich, Temkin, and Dubinin-Radushkevich to describe the experimental adsorption isotherms of these cations on the surface of aluminosilicates. The constants and parameters of the equations corresponding to these m

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20

Галимова, Р. З., Д. А. Нгуен, И. Г. Шайхиев, and К. Т. Нгуен Т. "Investigation of the adsorption of Ni(II) ions by Acacia auriculiformis bark modified with acid solutions." Химическая безопасность / Chemical Safety Science 6, no. 2 (2022): 148–60. http://dx.doi.org/10.25514/chs.2022.2.23009.

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Кора акации ушковидной ( Acacia auriculiformis) , модифицированная разбавленными (1 - 3%) растворами азотной и фосфорной кислот, изучена в качестве биосорбента для удаления ионов Ni в статических условиях. Результаты проведенного исследования показали, что изотермы адсорбции ионов Ni на образцах нативной и модифицированной растворами кислот коры Acacia auriculiformis относятся к изотермам I типа, согласно классификации ИЮПАК и L-типу, согласно классификации Гильса. Максимальная сорбционная ёмкость нативной коры Acacia auriculiformis по ионам Niсоставляет 9,0 мг/г. Выявлено, что с увеличением к

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21

Datsko, T.Ya., and V.I. Zelentsov. "Study of Adsorption Equilibrium in the System Methylene Blue + Nanocomposit TiO2/Diatomite." Elektronnaya Obrabotka Materialov 55 (4) (August 16, 2019): 38–49. https://doi.org/10.5281/zenodo.3369691.

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The article presents the results on the adsorption of the dye methylene blue (MB) from an aqueous solution on a nanocomposite DDT (nanosized titanium dioxide in the anatase phase precipitated on diatomite) and its components – diatomite D and TiO<sub>2</sub>. The effect on adsorption of the pH of the solution, the dose of the adsorbent, the   initial concentration, and temperature of the dye solution was studied. The equilibrium data were fitted to the Freundlich, Langmuir, and Dubinin-Radushkevich isotherms equations. The obtained parameters and correlation coefficients showed

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22

Algnaby, Yasir Hamod, and Hawazin Dyaa Aldawri. "Effect of Levels of Organic Matter on Adsorption and Liberation of Gypsum Soil." IOP Conference Series: Earth and Environmental Science 1213, no. 1 (2023): 012101. http://dx.doi.org/10.1088/1755-1315/1213/1/012101.

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Abstract In an experiment for iron adsorption for nine levels of iron (0,1,2,5,10,25,50,100,200)mg/L. This experiment was carried out to find the behaviour of iron in soils of varying gypsum and organic content to know the conditions for adsorption and liberation of iron in them, using three gypsums (10,20,30)% with percentages of organic matter from sheep feces (0,1,2)%. The Langmeyer equation, the Feinrendlach equation, and the Timken equation were used, through which the most excellent adsorption and binding energy were calculated. The most outstanding adsorption values were In medium gypsu

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23

Mortada, Wael Ibrahim, Mahmoud Mohsen Ghaith, Nada Elsayed Khedr, Mostafa Ibrahim Ellethy, Alaa Waleed Mohsen, and Amira Labib Shafik. "Mesoporous magnetic biochar derived from common reed (Phragmites australis) for rapid and efficient removal of methylene blue from aqueous media." Environmental Science and Pollution Research, June 13, 2024. http://dx.doi.org/10.1007/s11356-024-33860-3.

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AbstractA novel mesoporous magnetic biochar (MBC) was prepared, using a randomly growing plant, i.e., common reed, as an exporter of carbon, and applied for removal of methylene blue (MB) from aqueous solutions. The prepared sorbent was characterized by nitrogen adsorption/desorption isotherm, saturation magnetization, pH of point of zero charges (pHPZC), Fourier-transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). The obtained MBC has a specific surface area of 94.2 m2 g−1 and a pore radius of 4.1 nm, a pore volume of 0.252 cm3 g−1, a saturation magnetization of 0.

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