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Journal articles on the topic 'Activated sorbents'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Agipa, Ade Irmadiki, Roza Ruspita, Muhamad Fajar Muarif, and Al Baasiqot Shoffia Nur Jannah. "Penurunan Kadar COD Pada Limbah Cair Laboratorium Menggunakan Sorben Hydrilla Verticillata." Jurnal Ilmiah Teknik Kimia 8, no. 1 (2024): 24–31. http://dx.doi.org/10.32493/jitk.v8i1.36188.

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Hydrilla Verticillata adsorbents, HCl-activated Hydrilla Verticillata, and NaOH-activated Hydrilla Verticillata reduce COD levels in laboratory waste. The sorbents were characterized using FTIR and SEM-EDX. FTIR analysis shows a specific absorption at the wave number 1637 cm-1, which indicates the absorption of the carbonyl group in the ester and 1536, 1416, and 1324 cm-1, identical to the absorption of the carboxyl group. SEM results show a hollow and irregular shape in the sorbent. EDX analysis showed that Hydrilla Verticillata, which was activated using HCl and NaOH, experienced a decrease

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2

Lin, Cheng, Hui Yun Zhang, Xiao Ying Lin, and Yun Fei Feng. "Adsorption CO₂ on Activated Carbon with Surface Modification." Advanced Materials Research 634-638 (January 2013): 746–50. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.746.

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The success of CO2 capture from flue gas with solid sorbent is dependent of a low cost sorbent with high CO2 adsorption capacity and selectivity. Modifying surface texture of activated carbon with impregnating amines is expected to offer the benefits of liquid amines in the typical adsorption process routes. In this work, cocoanut activate carbon (AC) is firstly alkalified by KOH solution, then modified by impregnation of tetraethylenepentamine (TEPA), triethylenetetramine (TATA), and triethanolamine (TEA) to form a new type of sorbents. The effects of alkalifying treatment and temperature on

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3

Malovanyy, Myroslav, Halyna Sakalova, Tamara Vasylinych, Natalia Beznosiuk, and Galina Krusir. "Qualities of Regenerated Mixtures of Adsorbents." Materials Science Forum 1127 (September 30, 2024): 93–99. http://dx.doi.org/10.4028/p-jng0th.

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A proposal has been presented for the regeneration of a spent sorbent mixture, comprising activated carbon (BAU-A brand) and kieselguhr (Bekogur 200 brand), in a mass ratio of 1:3. The effectiveness of the regeneration process and the potential applications of the spent sorbents were determined through X-ray phase analysis methods. The study included an investigation into the adsorption of the primary dye (methylene blue) by activated carbon and various sorbent mixtures. The observed efficiency of regeneration supports the recommendation of using a combination of kieselguhr and activated carbo

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Vasileva, Zhanna V., Mikhail V. Vasekha, and Anastasia S. Trishina. "COMPARATIVE EVALUATION OF SORBENTS BASED ON NATURAL MATERIALS FOR CLEANING OIL-POLLUTED SOILS IN THE KOLA NORTH." Oil and Gas Business, no. 5 (November 8, 2024): 49–71. http://dx.doi.org/10.17122/ogbus-2024-5-49-71.

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The article presents the results of using sorbents based on natural materials as soil reclamation agents in the Arctic zone of the Russian Federation to reduce the negative impact of oil and oil product spills. It has been established that the most effective are composite sorbents based on sphagnum moss and peat in various combinations with excess activated sludge. The effectiveness of sorbents based on natural materials is compared with the commercial sorbent OilSorb. High dynamics of reducing the content of oil products in the first days in soil samples with the addition of composite sorbent

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5

Swan, Ng Boon, and Muhammad Abbas Ahmad Zaini. "Removal of Malachite Green and Congo Red Dyes from Water by Polyacrylonitrile Carbon Fibre Sorbents." Acta Chemica Malaysia 3, no. 1 (2019): 29–34. http://dx.doi.org/10.2478/acmy-2019-0004.

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Abstract The present work was aimed at evaluating the adsorption properties of malachite green and congo red dyes by polyacrylonitrile carbon fibre sorbents. The sorbents were activated and oxidized using potassium hydroxide and ammonium persulfate, respectively at mild conditions. Consequently, the sorbents were characterized for surface area, surface functional groups and thermal decomposition. The activated sorbent displayed a 18.8 mg/g (94 %) of malachite green removal at Co = 20 mg/L, while both modified sorbents showed a 17.5 mg/g (87.5 %) removal of congo red at the same concentration.

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6

Sokol, Oleksandr, and Anna Ivanchenko. "PRODUCTION OF ACID-ACTIVATED SORBENTS FROM PLANT RAW MATERIALS AND THEIR TESTING FOR DYE REMOVAL FROM MODEL SOLUTIONS." Collection of scholarly papers of Dniprovsk State Technical University (Technical Sciences) 1, no. 44 (2024): 169–82. http://dx.doi.org/10.31319/2519-2884.44.2024.22.

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The study addresses the pressing issue of obtaining new sorbents from plant raw materials and their use for purifying water systems containing hazardous dyes. In the research, the method of chemical kiloton activation is applied to acquire new sorbents, and its advantages are outlined. Three samples of sorbents were obtained: a lignocellulosic sorbent based on walnut shell, which underwent no treatment with chemical reagents; the second sample was obtained by treating a lignocellulosic raw material with a 65 % solution of nitric acid (HNO3); the third sample - with a 65 % solution of acetic ac

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7

Mamyshov, A. "Methods of Getting Activated Carbon From Plant Materials." Bulletin of Science and Practice 6, no. 12 (2019): 268–73. http://dx.doi.org/10.33619/2414-2948/61/28.

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This article is devoted to the production of activated carbon from vegetable raw materials. Due to the environmental stress, the problem of obtaining and searching for new sorbents, as well as the development of new sorption technologies, is urgent. Of particular interest are many tonnage production, such as, for example, timber processing and chemical industries. The latter is due to two reasons. On the one hand, the technologies of these industries are burdened with significant waste. On the other — wood and its components, natural compounds are the raw material for sorbents, and a unique so

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8

Diyuk, Vitaly E., Alexander N. Zaderko, Liudmyla M. Grischenko, et al. "CO2 adsorption on pristine, oxidized, and diethylamine-functionalized activated carbon sorbents." E3S Web of Conferences 154 (2020): 07001. http://dx.doi.org/10.1051/e3sconf/202015407001.

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Adsorption is currently the most promising capture technology to shorten atmospheric emissions of carbon dioxide (CO2). In this article, we report on the adsorption of CO2 onto pristine, oxidized, and aminated activated carbon (AC) sorbents. From our findings, some functionalized AC sorbents have shown very promising results in the CO2 capture process. Their maximum adsorption capacity measured by the thermogravimetric method at 20 °C varies between 2.2 and 3.9 mmol CO2/g depending on the content of diethylamino and oxygen-containing groups. The functionalization of the carbon surface with die

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9

Al Asadi, Safaa T., and Fouad F. Al-Qaim. "Agricultural Waste-Based Activated Carbon for Oily Wastewater Treatment by Adsorption: A Review." Journal of Petroleum Research and Studies 15, no. 2 (2025): 165–94. https://doi.org/10.52716/jprs.v15i2.985.

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Oily wastewater poses great risks to the ecosystem, human health and living organisms. Therefore, the development and study of sorbents using various activation techniques to remove oils from water resources is of interest to the scientific community. Here, we present a review on the use of sorbents made from agricultural waste to remove oils and hydrocarbons from aqueous media. After modification, it was found that activated carbon made from agricultural waste improves the performance of the adsorption process. The presentation also includes a comprehensive analysis of the application of isot

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10

VEPRIKOVA, E. V., M. YU BELASH, and O. P. TARAN. "PROPERTIES OF SORBENTS FROM PINE BARK ACTIVATED BY MECHANOCHEMICAL METHODS." Chemistry for Sustainable Development 32, no. 1 (2024): 15–23. http://dx.doi.org/10.15372/csd2024525.

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The influence of pine bark pre-activation conditions: 1) in a planetary mill AGO-2, 2) with water vapor under the conditions of explosive autohydrolysis (EAH), on the sorption activity of resulting sorbents with respect to methylene blue and gelatin was studied. It is shown that explosive autohydrolysis is a more efficient method to activate pine bark, and under certain conditions it leads to an increase in the sorption of methylene blue and gelatin at least by a factor of 1.8 and 3.8, respectively, compared with the sorbent from non-activated bark. The activating treatment of pine bark in a p

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11

Gumarova, Zhannar, Montaev S.A, Yessengeldi A.K, and Begaliyeva R. S. "MINERAL RAW MATERIALS AS SORBENTS IN GROUNDWATER PURIFICATION PROCESSES." Ġylym ža̋ne bìlìm 2, no. 3(76) (2024): 240–52. https://doi.org/10.52578/2305-9397-2024-3-2-240-252.

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Reducing the amount of fresh water necessitates the effective use of groundwater along with surface water. The use of mineral sorbents in the process of groundwater purification is environmentally and economically acceptable. For this reason, it is recommended to use mineral raw materials such as clays, activated carbon as a sorbent. Mineral sorbents are an effective means of removing various pollutants from water, including heavy metals, organic compounds and radioactive substances. This study examined the use of diatomite and montmorillonite as sorbents. They worked to improve the organolept

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12

Veprikova, Evgeniya Vladimirovna, Ivan Petrovich Ivanov, Nikolay Vasil'yevich Chesnokov, and Boris Nikolayevich Kuznetsov. "STRUCTURE AND SORPTION PROPERTIES OF POROUS CARBON SORBENTS FROM ASPEN BARK." chemistry of plant raw material, no. 3 (April 1, 2019): 325–33. http://dx.doi.org/10.14258/jcprm.2019035180.

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The effect of temperature of aspen bark pre-carbonization on evolution of a porous structure and sorption properties of the carbon sorbents prepared in results of thermo alkaline activation of carbonizats with hydroxide potassium was studied. The relationship of a sorption of methylene blue and vitamin B12 by the sorbents from aspen bark to a volume and size of pores was established. It was shown, that the carbon sorbents capacity at а methylene blue are defined by pores with width 0.86–2.95 nm, and at a vitamin B12 – 3.18–6.89 nm. Comparation of the porous structures parameters and sorption p

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13

Ongarbayev, Yerdos, Moldir Baigulbayeva, Yerbol Tileuberdi, and Kairat Zhumakhan. "SORPTION OF OIL BY MECHANOCHEMICALY ACTIVATED SHUNGITE." Rudarsko-geološko-naftni zbornik 37, no. 4 (2022): 17–26. http://dx.doi.org/10.17794/rgn.2022.4.2.

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In the paper the sorption capacity of shungite rocks of the Koksu field (Kazakhstan) in relation to the oil from the Karazhanbas and Tengiz fields (Kazakhstan) were studied. Oil spills occurring during production, gathering, transportation, storage and refining, and repair work on wells are an urgent environmental problem. There are effective methods of soil purification, including particular interests addressed to sorption process. The aim of this research is to study oil sorption by shungite rocks of the Koksu deposit after mechanochemical activation. The mechanochemical activation of shungi

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14

Kurylenko, Viktor, Nataliia Tolstopalova, Tetiana Obushenko, Olga Sanginova, and Tetiana Dontsova. "FLUORIDE IONS REMOVAL EFFICIENCY OF NATURAL/ACTIVATED ZEOLITE AND BENTONITE SORBENTS." WATER AND WATER PURIFICATION TECHNOLOGIES. SCIENTIFIC AND TECHNICAL NEWS 36, no. 2 (2023): 27–39. http://dx.doi.org/10.20535/2218-930022023300526.

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Addressing the health concern of fluoride ions contamination in water, that cause such deceases as dental and skeletal fluorosis, requires the development of effective adsorption materials for water treatment. Our research objective was to evaluate the adsorption properties and capacities of zeolite and bentonite, sourced from Ukrainian deposits, and their acid-activated forms in relation to fluoride ions and estimate fitting this data to various adsorption models. Characterization of natural and acid-activated zeolite and bentonite sorbents was performed through X-ray diffraction to determine

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15

Zalevska, Olha, Lilia Dzihovska, and Halyna Sakalova. "THE USE OF SPENT SORPTION MATERIALS FOR THE TREATMENT OF FOOD INDUSTRY WASTEWATER." Personality and Environmental Issues 3, no. 2 (2023): 33–37. http://dx.doi.org/10.31652/2786-6033-2023-2(4)-33-37.

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A significant number of sorbents used in the food industry are not reused due to the complexity of their regeneration and significant material costs. They are often stored on the territory of the enterprise or taken to landfills, usually without authorization. Today, it is important to study the regeneration and reuse of sorbents used in food production. It is promising to use sorbents previously used at the stage of water treatment or preparation of technological solutions and regenerated in wastewater treatment, in particular, in the same food production facilities and in other industries wh

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16

Yang, Yong, Hu Peng Yu, Jin Long Jiang, and Yun Hua Qian. "Flue Gas Desulfurization over Copper Oxide Loaded on Complex Carrier of Attapulgite and Activated Carbon." Advanced Materials Research 549 (July 2012): 387–90. http://dx.doi.org/10.4028/www.scientific.net/amr.549.387.

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Sorbent of CuO loaded on complex carrier of attapulgite and activated carbon was prepared by incipient impregnation method for flue gas desulfurization. The effects of CuO loading, reaction temperature and components in flue gas on the desulfurization performance were investigated in a fixed-bed quartz reactor. The experimental results indicate that the sorbents of 20 wt% CuO loading has a high desulfurization activity under conditions of reaction temperatures 200-250 oC and 21000 h-1, and O2 is necessary for the high desulfurization activity of the sorbents.

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17

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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18

Tomina, E. V., N. A. Khodosova, V. E. Manukovskaya, and K. V. Zhuzhukin. "Effect of Physico-chemical Activation on Sorption Activity of Bio-coal from Pine Sawdust." Ecology and Industry of Russia 27, no. 6 (2023): 67–71. http://dx.doi.org/10.18412/1816-0395-2023-6-67-71.

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Pine sawdust, 0.5–1 mm in size, was made carbonized. The resulting biochar was activated. This activated KOH biochar was confirmed to be a better methylene blue dye sorbent than the original charcoal. The conclusion was made about the possibility of using the study results in the processing of timber industry waste into carbon sorbents for water treatment systems and ensuring environmental safety of production sites.

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Sandul, Оlga, Taras Titov, Anna Kulyk, Halyna Sakalova, and Kateryna Petrushka. "REUSE OF THE SPENT SORBENT MIXTURE FOR WASTEWATER TREATMENT." Environmental Problems 9, no. 4 (2024): 193–98. https://doi.org/10.23939/ep2024.04.193.

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Much of the sorbent used in the food industry is not re-used because it is difficult to regenerate and expensive. Also, the reuse of used sorbents involves their biological cleaning, which is due to the specificity of adsorbed materials. As a result, they are often stored off-site or disposed of in landfills, usually without authorization. It is more promising to use such sorbents in waste water treatment, especially in the same food industry and in other industries where wastewater contains bioorganic substances. Studies have been made on the reuse of a used sorbent mixture, consisting of act

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Kaya, Nihan. "A comprehensive study on adsorption behavior of some azo dyes from aqueous solution onto different adsorbents." Water Science and Technology 76, no. 2 (2017): 478–89. http://dx.doi.org/10.2166/wst.2017.216.

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One of the major environmental problems is the existence of dye materials in water sources. This pollutant must be removed from water by appropriate methods. Although most of these methods are efficient for the treatment of waters contaminated with dye pollutants, they are very costly and commercially unattractive. Adsorption is one of the most popular methods for the removal of dye pollutants from water especially if the sorbent is inexpensive. Sorbents are classified as natural sorbents, commercial sorbents, and the sorbents obtained from industrial and agricultural wastes. Although commerci

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Bagheri Hosseinabadi, Majid, Shahnaz Timoori, and Ali Faghihi Zarandi. "Functionalized graphene-trimethoxyphenyl silane for toluene removal from workplace air by sorbent gas extraction method." Analytical Methods in Environmental Chemistry Journal 2, no. 2 (2019): 45–54. http://dx.doi.org/10.24200/amecj.v2.i2.63.

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A new synthesized sorbent based on functionalizing graphene with N-Phenyl-3-aminopropyl trimethoxy silane (G-PhAPTMS, C12H21NO3Si), was developed as a novel sorbent for removal of toluene from air by sorbent gas extraction procedure (SGEP). By proposed method, the removal efficiency of G-PhAPTMS was compared with other sorbents such as activated carbon (AC), graphene (G) and graphene oxide (GO). The standard gas of toluene generated in pure air with different concentrations and the effects of parameters such as temperature (10-90 °C), flow rate (50-500 mL min-1) and the amount of sorbent (2-30

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Smol, Marzena, Maria Włodarczyk-Makuła, and Dariusz Włóka. "Adsorption of Polycyclic Aromatic Hydrocarbons (PAHS) from Aqueous Solutions on Different Sorbents." Civil And Environmental Engineering Reports 13, no. 2 (2014): 87–96. http://dx.doi.org/10.2478/ceer-2014-0017.

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Abstract This paper presents the results of the possibility and effectiveness of PAHs removal from a model aqueous solution, during the sorption on the selected sorbents. Six PAHs (naphthalene, acenaphthylene, acenaphthene, fluorene, phenanthrene, anthracene) listed by EPA for the analysis in the environmental samples were determined. Model aqueous solution was prepared with RESTEK 610 mix PAHs standard. After the sorption process, decrease in the concentration of individual hydrocarbons was observed. The removal percentage was dependent on the type of sorbent (quartz sand, mineral sorbent, ac

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Ovchinnikov, Alexey, Viktor Bocharnikov, Olesya Bocharnikova, et al. "Cascade method of wastewater treatment using various natural sorbents." E3S Web of Conferences 539 (2024): 01024. http://dx.doi.org/10.1051/e3sconf/202453901024.

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In the presented paper the sorption properties of natural sorbents were studied. Quartz sand, activated carbon with a fraction of 0.3 mm and zeolite with a fraction of 0.75 mm were selected. Experiments were carried out in laboratory conditions, filtration was carried out through each of the presented sorbents, then chemical analysis was performed for residual concentration of chemical impurities in wastewater. There was also a comparison when filtering through each sorbent and cascade. The best result is filtering by cascade method, where the sorption of chemical impurities was more than 90%,

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Menshova, Irina I., Yulia M. Averina, and Elena Zabolotnaya. "CARBON FIBERS IN THE ADSORPTION PROCESSES." ChemChemTech 66, no. 3 (2023): 52–58. http://dx.doi.org/10.6060/ivkkt.20236603.6715.

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The parameters of the porous structure of carbon fiber sorbents based on polyacrylonitrile fiber of different activation have been studied. Fibrous carbon sorbents for the adsorption of water-soluble organic compounds have been analyzed. Sorption isotherms were constructed in the coordinates of the Langmuir equation of the studied substances on non-activated and activated carbon fibers, as well as Brunauer-Emmett- Teller isotherms, which allow one to reliably calculate the specific surface area of a carbon fiber sorbent. The sorption isotherms are satisfactorily described by the Freundlich equ

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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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Runtti, Hanna, Elavarasi Sundhararasu, Janne Pesonen, et al. "Removal of Ammonium Ions from Aqueous Solutions Using Alkali-Activated Analcime as Sorbent." ChemEngineering 7, no. 1 (2023): 5. http://dx.doi.org/10.3390/chemengineering7010005.

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Five alkali-activated analcime (ANA) sorbents (ANA-MK 1, ANA 2, ANA 3, ANA-MK 4, and ANA-MK 5) were developed for ammonium (NH4+) ion removal. Acid treatment and calcination were used as pre-treatments for analcime, and metakaolin (MK) was used as a blending agent in three sorbents. Sorption experiments were performed to evaluate the effects of sorbent dosage (1–20 g L−1), initial NH4+ ion concentration (5–1000 g L−1), and contact time (1 min–24 h). ANA-MK 1, ANA 2, and ANA-MK 4 were the most efficient sorbents for NH4+ ion removal, with a maximum experimental sorption uptake of 29.79, 26.00,

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ВЕПРИКОВА, Е. В., М. Ю. БЕЛАШ, and О. П. ТАРАН. "PROPERTIES OF SORBENTS FROM PINE BARK ACTIVATED BY MECHANOCHEMICAL METHODS." Химия в интересах устойчивого развития 32, no. 1 (2024): 15–23. http://dx.doi.org/10.15372/khur2024525.

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Исследовано влияние условий предварительной активации коры сосны - 1) в планетарной мельнице АГО-2; 2) водяным паром в условиях взрывного автогидролиза (ВАГ) - на сорбционную активность полученных сорбентов в отношении метиленового синего и желатина. Показано, что взрывной автогидролиз является более эффективным способом активации коры сосны и при определенных условиях приводит к увеличению сорбции метиленового синего и желатина не менее чем в 1.8 и 3.8 раза соответственно по сравнению с сорбентом из неактивированной коры. Активирующая обработка коры сосны в планетарной мельнице позволяет увел

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Momot, Andrey P., Lyubov N. Rachkovskaya, Andrey Yu Letyagin, et al. "STUDY OF THE EFFECT OF LITHIUM AND SILVER MODIFIED SORBENT ON HEMOSTATIC REACTIONS IN VITRO." Bulletin of Medical Science 37, no. 2 (2025): 28–36. https://doi.org/10.31684/25418475-2025-2-28.

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Introduction. Hemosorption, as a method of sorption detoxification, is used successfully in a complex of intensive care measures for patients with a number of pathologies. The range of application of the method can be expanded by using modified sorbents with biologically active components, in particular silver and lithium. Objective. To evaluate the effect of lithium- and silver-containing sorbents based on aluminum oxide and polydimethylsiloxane on the quantitative content of platelets and on the features of the hemostatic response under conditions of dosed contact of the sorbent with donor b

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Račys, V., D. Kliaugaite, D. Jankūnaite, and I. Urniežaite. "DIFFERENT BIOLOGICALLY ACTIVATED SYSTEMS RESISTANCE TO INHIBITION." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 1 (June 18, 2005): 105. http://dx.doi.org/10.17770/etr2005vol1.2152.

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Biologically activated sorbent (BAS) are believed to be more efficient than separate conventional activated sludge and sorbents systems in removing phenols and others persistant organic pollutants from wastewater. These days, applications of biological activated systems treatment for various kinds of industrial wastewater are attracting greater attention as one of the efficient technologies. But the process is not very good understood, and there is not much parameter, which could describe stability and reliability of system and which could compare different BAS systems. The aim of this study w

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Ciesińska, Wiesława, Grzegorz Makomaski, Janusz Zieliński, and Tatiana Brzozowska. "Preparation of sorbents from selected polymers." Polish Journal of Chemical Technology 13, no. 1 (2011): 51–54. http://dx.doi.org/10.2478/v10026-011-0010-0.

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Preparation of sorbents from selected polymers In this work, the results of studies on the preparation of sorbents from selected polymers were presented. The polymers were carbonized and subsequently physically activated by steam or carbon dioxide, or alternatively, chemically activated with potassium hydroxide. For the obtained materials, a specific area was evaluated by means of low-temperature nitrogen adsorption and benzene adsorption, iodine number was also determined. The obtained results indicated a possibility to procure hydrophobic sorbents of microporous structure. Sorbents having th

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El-Shafey, Ola I., Nady A. Fathy, and Thoria A. El-Nabarawy. "Sorption of Ammonium Ions onto Natural and Modified Egyptian Kaolinites: Kinetic and Equilibrium Studies." Advances in Physical Chemistry 2014 (April 24, 2014): 1–12. http://dx.doi.org/10.1155/2014/935854.

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Thermally activated, acid-activated, and acid-leached of thermally activated kaolinites were prepared from the Egyptian ore. The physical and chemical properties were studied using N2 sorption at −196°C, FTIR, SEM, and the total surface acidity. The sorption of NH4+ ions on the investigated sorbents was controlled with the solution pH, sorbent dosage, and initial concentration of NH4+ solution. Kinetic and equilibrium NH4+ sorption at 30°C were employed. Four kinetic models were applied to the kinetic sorption data; pseudo-second-order, Elovich, and intraparticle diffusion models fitted well t

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Paczyńska, Karolina, Tomasz Jóźwiak, and Urszula Filipkowska. "The Effect of Modifying Canadian Goldenrod (Solidago canadensis) Biomass with Ammonia and Epichlorohydrin on the Sorption Efficiency of Anionic Dyes from Water Solutions." Materials 16, no. 13 (2023): 4586. http://dx.doi.org/10.3390/ma16134586.

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This study examined the effect of modifying Canadian goldenrod (Solidago canadensis) biomass on its sorption capacity of Reactive Black 5 (RB5) and Reactive Yellow 84 anionic dyes. The scope of the research included the characteristics of sorbents (FTIR, elementary analysis, pHPZC), the effect of pH on dye sorption efficiency, sorption kinetics, and the maximum sorption capacity (describing the data with Langmuir 1 and 2 and Freundlich models). FTIR analyses showed the appearance of amine functional groups in the materials modified with ammonia water, which is indicative of the sorbent aminati

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Azat, S., Rosa Busquets, V. V. Pavlenko, A. R. Kerimkulova, Raymond L. D. Whitby, and Z. A. Mansurov. "Applications of Activated Carbon Sorbents Based on Greek Walnut." Applied Mechanics and Materials 467 (December 2013): 49–51. http://dx.doi.org/10.4028/www.scientific.net/amm.467.49.

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This article presents the results of the synthesis of carbon nanomaterials: Nanoscale materials obtained by carbonization of waste agricultural products (apricot kernel, Greek walnut (GW), rice husk). The results of physico-chemical characteristics of the obtained nanomaterials. Physico-chemical parameters of the synthesis of carbonized sorbents based on plant raw material are investigated along with the properties of these sorbents. The data of FTIR, ESR spectroscopy & BET-method, as well as electron microscopy are reported. It is stated that carbonized sorbents possess high specific surf

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Kumar Reddy, Tumma Prasanna, Sayana Veerababu, Malireddy Venkata Sai Mohan Reddy, and Kunta Ravindhranath. "Adsorptive Removal of Copper Ions from Polluted Water Using Sorbents Derived from Cordia dichotoma, Albizia thompsonii and Polyalthia cerasoides Plants." Asian Journal of Chemistry 32, no. 10 (2020): 2653–59. http://dx.doi.org/10.14233/ajchem.2020.22777.

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Three different activated carbons as effective adsorbents were prepared by digesting the stems of Cordia dichotoma, Albizia thompsonii and Polyalthia cerasoides plants in conc. H2SO4 for Cu2+ removal from wastewater. The sorption natures of these sorbents are optimized with respect to various physico-chemical characteristics for the maximum Cu2+ removal using simulated waters. Cordia dichotoma (CDAC), Albizia thompsonii (ATAC) and Polyalthia cerasoides (PCAC) activated carbons show good sorption capacities of values: 97.0, 76.8 and 66.7 mg/g, respectively in a wide pH ranges. Unlike that of ot

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Idrisheva, Zh K., G. K. Daumova, M. D. Daniyarova, O. A. Petrova, and I. V. Denissov. "PRODUCTION AND RESEARCH OF SORBENTS FROM FOOD PLANT WASTES FOR WATER PURIFICATION." Bulletin of Shakarim University. Technical Sciences, no. 1(13) (March 29, 2024): 370–83. http://dx.doi.org/10.53360/2788-7995-2024-1(13)-46.

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The article describes the results of research on production of modified types of sorbents based on waste food plants and the possibility of drinking water purification from Ca2+ and Mg2+ ions. Sunflower and buckwheat wastes widely spread in the East Kazakhstan region were selected for production of modified sorbent. Structural features of sunflower and buckwheat shells were studied. It was found that samples of the initial form of buckwheat and sunflower, washed with distilled water, consist of very dense and small micropores. It was found that the surface of the sorbents particles is changed

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MYAKUSH, Oksana, and Leonid SYSA. "FEATURES OF EXTRACTION OF COPPER, ZINC AND NICKEL IONS FROM AQUEOUS SOLUTIONS BY NATURAL SORBENTS, ACTIVATED MICROWAVES." Proceedings of the Shevchenko Scientific Society. Series Сhemical Sciences 2020, no. 60 (2020): 55–67. http://dx.doi.org/10.37827/ntsh.chem.2020.60.055.

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The article is a continuation of a series of scientific works of the authors on the study of the influence of microwave irradiation on the sorption parameters of natural sorbents in the processes of purification of natural and wastewater. Using the atomic absorption method, the sorption ability of the natural sorbent clinoptilolite (zeolite type of structure) to remove Copper, Zinc and Nickel ions from aqueous solutions was studied. It was found that different variants of microwave activation of this mineral (series «Nat», «Stim» and «DIR») lead to a significant increase in the sorption capaci

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Нургабыл, Н. К., та К. К. Мамырбаева. "ИССЛЕДОВАНИЕ СОРБЦИИ ЗОЛОТА АКТИВИРОВАННЫМ УГЛЕМ В ПРИСУТСТВИИ МЕТАЛЛОВ ПРИМЕСЕЙ". Горный журнал Казахстана, № 1(237) (31 січня 2025): 51–58. https://doi.org/10.48498/minmag.2025.237.1.003.

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Целью настоящей работы является исследование сорбционных свойств сорбентов, полученных на основе активированного угля (NoritRO, АКВАСОРБ) и шунгита. Эксперименты по определению оптимального сорбента проводились с цианистым раствором состава, мг/л: Au – 11,66; Ag – 2,16; Fe – 0,68; Cu – 8,45, Zn – 8,12. Установлено, что при сорбции золота с использованием сорбентов NoritRO, АКВАСОРБ и сорбента на основе шунгита, наибольшим значением емкости обладает ионит марки NoritRO. Оптимальным значением рН среды для извлечения золота с NoritRO и АКВАСОРБ явился 10, для сорбента на основе шунгита рН = 6. Пр

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Li, Lin Bo, Jun Zhu, Qi Wang, and Jun Yang. "Adsorption of Phosphate from Aqueous Solution with Blast Furnace Slag Activated by Hydrated Lime as Sorbent." Materials Science Forum 620-622 (April 2009): 643–46. http://dx.doi.org/10.4028/www.scientific.net/msf.620-622.643.

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This paper describes a method of removing phosphate (P) from aqueous solution by sorbent prepared with amorphous blast furnace slag (BFS) and hydrated lime. An orthogonal experiment was carried out to investigate the factors of hydration time, slurrying temperature and the weight ratio of blast furnace slag /hydrated lime and water/solid on the reactivity of the sorbent. Chemical composition of BFS was analyzed by atomic absorption spectrometry, microstructure and phase analysis of samples were conducted by SEM and XRD. It is found that all sorbents prepared show higher P adsorption capacity t

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Nasir, Mohammad Ibrahim Nasir, Md Zakir Hossain Hossain, and P. A. Charpentier Charprntier. "Synthesis and Characterization of Date Palm Fiber-Based Bio-Char and Activated Carbon and its Utilization for Environmental Remediation." Journal of Petroleum Research and Studies 8, no. 2 (2021): 209–22. http://dx.doi.org/10.52716/jprs.v8i2.245.

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Natural agricultural products have the potential to be a substitute for synthetic polymers absorbentsin environmental remediation and spill cleanup and recovery. One of these natural by-productswhich is available in many regions of the world is Date Palm Fibers (DPF). DPF (also known assurface fibers) is a natural sorbent that exhibits good sorption characteristics. In an attempt tovalorize this abundant, low cost byproduct, we have investigated the micro porosity of this rawmaterial by carrying out two procedures. First, hydrothermal pyrolysis using a scalable reactor withonly water as solven

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Samonin, V. V., E. A. Spiridonova, M. L. Podvyaznikov, E. D. Khrylova, S. P. Khokhlachev, and L. S. Klischevskaya. "Obtaining Activated Carbons from Hydrolysed Lignin Using Waste Products of the Carbonization Process." Ecology and Industry of Russia 26, no. 9 (2022): 4–9. http://dx.doi.org/10.18412/1816-0395-2022-9-4-9.

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Consideration has been given to obtain activated carbon from waste products of hazard class III which is hydrolyzed lignin. The possibility of obtaining microporous tenacious carbon sorbents based on lignin using waste products from the carbonization process was demonstrated. The dependence of the parameters of porous and microporous structures of activated carbons based on lignin on the technological features of the production process was assessed. Illustration of effect of introducing small amounts of inorganic additives into the feedstock using phosphoric acid as an example on the porous st

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Piekarski, Jacek, Katarzyna Ignatowicz, and Tomasz Dąbrowski. "Application of an Adsorption Process on Selected Materials, Including Waste, as a Barrier to the Pesticide Penetration into the Environment." Materials 15, no. 13 (2022): 4680. http://dx.doi.org/10.3390/ma15134680.

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The article presents research on using the adsorption process of aldrin (a chloro-organic pesticide that most often occurs in the environment near expired pesticide burials). The research used three sorbents: two activated carbons and compost from sewage sludge as a low-cost sorbent. Obtained adsorption isotherms belong to the L group according to the Giles classification. The test results and their analysis confirm that the IZO application facilitates the analysis of the adsorption process. The study results also confirm that compost can be a cost-effective alternative to commercial activated

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Jóźwiak, Tomasz, Urszula Filipkowska, and Paulina Walczak. "The Use of Aminated Wheat Straw for Reactive Black 5 Dye Removal from Aqueous Solutions as a Potential Method of Biomass Valorization." Energies 15, no. 17 (2022): 6257. http://dx.doi.org/10.3390/en15176257.

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Straw is a by-product from cereal cultivation. Using straw surplus as a biofuel is a popular means of its management. However, before being used for fuel purposes, straw can be successfully used as a sorbent. The present study investigated the sorption properties of wheat straw (Triticum aestivum L.) modified with ammonia water and epichlorohydrin against the reactive dye Reactive Black 5 (RB5). The tested sorbents were characterized based on FTIR, elemental analysis (C/N content), and pHPZC. The scope of the research included, among others, research on the effect of pH (pH 2–11) on the RB5 so

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Stefan, Mircea, Ioana Stefan, Ioana-Alexandra Negoita, Viorel Ordeanu, and Daniela Simina Stefan. "Influence of Internal Structure of the Sorbents on Diazepam Sorption from Simulated Intestinal Fluid." Applied Sciences 11, no. 3 (2021): 1158. http://dx.doi.org/10.3390/app11031158.

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The capacity of natural Na-montmorillonite and activated charcoal for sorption of diazepam from simulated intestinal fluid (SIF) was studied. The main characteristics of the sorbents were determined. In order to characterize the sorption process of diazepam the influence of the pH, contact time and ethanol presence in SIF was analyzed. Adsorption isotherms for the diazepam-activated charcoal and diazepam-natural Na-montmorillonite systems were determined. The Langmuir isotherm model provided a very good description of diazepam sorption. Furthermore, the pH-drift method was used to determine th

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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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Jetimov, M. A., L. K. Ybraimzhanova, E. A. Kambarova, and S. A. Mamanova. "Efficiency of industrial wastewater treatment using natural bentonite sorbents." Engineering Journal of Satbayev University 146, no. 6 (2024): 33–38. https://doi.org/10.51301/ejsu.2024.i6.05.

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The article is devoted to the current problem of the industrial town Tekeli of the Zhetysu Region, the Republic of Kazakhstan, in the area of operation the Tekeli mining and processing complex, based on TMPC LLP, where widespread pollution of water resources is observed. The main pollutant of its water basin is industrial waste of the operating enterprise located on the sites of the mining and processing complex. The water of the Karatal River is under intense pressure from the toxic components of the mining industry, which is located in the zone of the densest river network. This co-arrangeme

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Murzakassymova, N. S., M. A. Gavrilenko, N. A. Bektenov, R. M. Kudaibergenova, and E. A. Baybazarova. "SORPTION PURIFICATION OF WATER FROM HEAVY METAL IONS USING SULFOUGL." Chemical Journal of Kazakhstan, no. 1 (March 30, 2023): 75–82. http://dx.doi.org/10.51580/2023-1.2710-1185.08.

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The sorption capacity of modified activated carbon is investigated; the possibility of creating a sorbent for iron (II, III) in water bodies with a purified water yield of up to 0.01 mg/l is shown. A sulfogroup was used as a modifier and a complexing agent. To date, thousands of sorbents are produced with various matrix materials, functional groupings, ways of fixing them, containers, mechanical properties, granulation and other characteristics. The choice of the optimal sorbent depends on the task assigned to the researcher. To a large extent, the choice of a sorbent is determined by the natu

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Gazda-Grzywacz, Magdalena, Łukasz Winconek, and Piotr Burmistrz. "Carbon Footprint for Mercury Capture from Coal-Fired Boiler Flue Gas." Energies 14, no. 13 (2021): 3844. http://dx.doi.org/10.3390/en14133844.

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Power production from coal combustion is one of two major anthropogenic sources of mercury emission to the atmosphere. The aim of this study is the analysis of the carbon footprint of mercury removal technologies through sorbents injection related to the removal of 1 kg of mercury from flue gases. Two sorbents, i.e., powdered activated carbon and the coke dust, were analysed. The assessment included both direct and indirect emissions related to various energy and material needs life cycle including coal mining and transport, sorbents production, transport of sorbents to the power plants, and i

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BARAKHOV, Anatoly, Natalia CHERNİKOVA, Tamara DUDNİKOVA, et al. "Role of sorbents in early growth of barley under copper and benzo(a)pyrene contaminated soils." EURASIAN JOURNAL OF SOIL SCIENCE (EJSS) 12, no. 1 (2023): 1–9. http://dx.doi.org/10.18393/ejss.1177672.

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In modern economic and industrial realities, agricultural lands are often located next to industrial areas, which leads to soil contamination and, as a result, agricultural products with pollutants. Pollution of soils and plants by several pollutants of various nature has acquired huge proportions. There is a threat of migration of dangerous ecotoxicants, including heavy metals and benz[a]pyrene, one of the main persistent compounds, a marker of PAH soil contamination, along trophic chains that may be dangerous to public health. This study examines the use of various types of mineral sorbents

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Kablanbekov, Askhat, Svetlana Yefremova, Feruza Berdikulova, et al. "Rice Husk Cellulose-Based Adsorbent to Extract Rare Metals: Preparing and Properties." Materials 16, no. 18 (2023): 6277. http://dx.doi.org/10.3390/ma16186277.

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Adsorption is one of the common stages in the hydrometallurgy of rare metals. Its efficiency is largely determined by the quality of the sorbent used. The purpose of this work was to create an activated sorbent based on rice husk cellulose for the extraction of rhenium from aqueous solutions. Two types of cellulose were obtained by treating rice husk with a 1.5% NaOH solution (alkaline cellulose) and a nitric acid solution in ethyl alcohol (Kürschner and Hoffer cellulose). They were tested by IR, SEM, TA, TPD-MS, and XRD methods. It was found that Kürschner and Hoffer cellulose does not contai

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Nikolić, Jelena, Milica Nikolić, Violeta Mitić, et al. "Dispersive solid phase extraction for antibiotics analysis." Chemia Naissensis 6, no. 1 (2023): 49–63. http://dx.doi.org/10.46793/chemn6.1.49n.

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Antibiotics are widely used to prevent diseases and promote growth in food – producing animals. Their usage may result in the presence of antibiotics in food and environmental samples. Antibiotics analysis in complex samples, such as food and environment samples, require sample pretreatment. Application of activated carbon, C18 and florisil and the influence of the amount of applied sorbents on their effectiveness in dispersive solid phase extraction (dSPE) for chloramphenicol and tetracycline analysis was examined. Activated carbon showed the lowest efficiency in the extraction of antibiotics

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