Relevant bibliographies by topics / Freindlich

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Academic literature on the topic 'Freindlich'

Author: Grafiati
Published: 4 June 2025
Last updated: 23 June 2025

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Journal articles on the topic "Freindlich"

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 рассказывает эта статья. Alisa Freindlich, contrary to the laws of the time, does not lose her charm and attractiveness and conducts a dialogue from the stage and the screen with several generations of viewers and listeners. Pianist Semyon Skigin was lucky enough to collaborate with her, to go on the concert stage with her and fulfil his old dream-to return Christmas and the Bible to the Russian stage. Today it seems self-evident, but half a century ago it took courage to declare: “I am a deeply religious person!” loudly. This article tells about how this happened, about the musical life of Leningrad in the eighties of the last century.
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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%,92.34%,98.22% ), respectively. The (FTIR ) and (FESEM ) technique was used to determine the surface characteristics before and after the adsorption process. Two types of adsorption isotherms were studied, the Freindlich and Langmuir model. The equilibrium data showed that it obeys the Freindlich model where the value of ( R2= 0.9777) was compared with the Langmuir model ( R2= 0.9533). Parameters were derived Thermodynamic including (ΔG°), (ΔH°), and (ΔS°) are found to be spontaneous and endothermic in nature.
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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 salts. An estimate of the rate of binding of cadmium ions by various sorbents is given, and the pH at which the sorption capacity of humic acids and their sodium salts is maximum is determined. The structural and functional features of humic acids are presented, proving their high binding capacity and strength of Cd2+ binding, as well as relatively high selectivity. Based on the results obtained, it is assumed that it is possible to develop and use preparations based on humic acids as sorbents.
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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 decrease of peak intensity was found at the values of 2θ 21,48 and 26.56 assigned to the silicate groups. Adsorption of methylene blue on the surface of the flask, magnetite and their composite was studied. Adsorption results were processed according to Langmuir and Freindlich. It is shown that the maximum adsorption values of the dye on the surface of the flask, magnetite, and their composite are 133.3 mg/g, 85.0 mg/g, and 166.6 mg/g, respectively. The adsorption constant is also maximal in the case of a magnetite-flask composite. The adsorption parameters calculated according to Langmuir and Freindlich are in good agreement and indicate the preferability of using the flask and composite magnetite- flask as a methylene blue adsorbents.
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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 is calculated —9,7 kJ / mol.
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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 the Freindlich isotherm. This modeling allows to predict the maximum adsorption capacity, which is 37.7 mg / g of natural bentonite and 64.4 mg / g of the modified sample.
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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 concluded that biocar can be applied to immobilize heavy metals in contaminated soils.
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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 the Dubinin-Radushkevich model (R2 = 0.8031), and the sorption process has a physical nature (E = 5.534 kJ/mol).
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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 of Langmuir and Freindlich indicates the phenomena of multilayer adsorption on a material that has various active sorption centers with unequal energies.
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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 contribution to sorption processes is made by minerals of iron oxides and hydroxides. Coefficients of approximation of isotherms of adsorption by different equations are analyzed. It is recommended to use the Dibininin-Radushkevich equation when the equation Langemura is inapplicable.
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Conference papers on the topic "Freindlich"

1

Bauer, T. V., and T. M. Minkina. "BIOCHAR APPLICATION TO DETOXIFICATION OF FLUVISOLS CONTAMINATED BY COPPER." In STATE AND DEVELOPMENT PROSPECTS OF AGRIBUSINESS. DSTU-PRINT, 2020. http://dx.doi.org/10.23947/interagro.2020.1.379-383.

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Using the adsorption method, the possibility of using a wood-derived biochar to detoxification Fluvisols contaminated by copper was studied. It is shown that the addition of biochar to increases the adsorption capacity of the soil in relation to metal. The analysis of the results was carried out using the equations of the Langmuir and Freindlich isotherms.
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2

Sallom, Audai, and A. E. Khadzhidi. "METHOD FOR REMOVING NITRATES FROM WATER WATER SUPPLY SYSTEMS." In STATE AND DEVELOPMENT PROSPECTS OF AGRIBUSINESS Volume 2. DSTU-Print, 2020. http://dx.doi.org/10.23947/interagro.2020.2.180-182.

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To remove nitrates from the water of water supply systems, the polyvinyl / chitosan compound (PVA / CS) was studied. Optimal conditions for the absorption of nitrates on PVA / CS were investigated using antisurfaces. The results of the study showed that the mixture of polymers PVA / chitosan CS is an effective absorbent material for removing nitrates from water: the maximum concentration of solid phase nitrate was 0.5 mg / g at a pH in the range from 3 to 6; contact time was 70 minutes at a dose of adsorbent 2 g / l. These conditions were applied to the study of the equilibrium and kinetic adsorption of nitrates on (PVA / CS). Adsorption data are described by Langmuir and Freindlich models. The maximum concentration of solid phase nitrate calculated by the Langmuir model for (PVA / CS) was 92.59 mg / L. Nitrate mobility was analyzed on pseudo-adsorbents of the second pseudo-class, this relates to the nature of chemical adsorption.
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