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Journal articles on the topic 'Adsorbent surfaces'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Ntsondwa, Sindisiwe, Velaphi Msomi, and Moses Basitere. "The Mechanism of Adsorbents Adsorption Affinity in Relation to Geometric Parameters." Key Engineering Materials 924 (June 30, 2022): 189–97. http://dx.doi.org/10.4028/p-j52rwy.

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In the process of incorporating adsorption with thermal desalination, adsorbents are important because they increase the water vapour uptake rate, and this would yield more desalinated water over a short period. Therefore, they are important and the key parameters in the selection of adsorbent for an adsorption desalination (AD) cycle are thermo-physical properties, surface characteristics and water vapor uptake capacity. The best adsorbent is used as the adsorbent-refrigerant pair and is driven at 50 oC to 85 oC by low-temperature heat sources. When the unsaturated adsorbent is exposed to vap

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2

Wu, Jiangbo, Ziyi Sui, Xiaoze Du, Yaocong Zhang, and Tao Ma. "A Study on the Improvement of the Photothermal Characteristics of the Adsorbent for Sorption-Based Atmospheric Water Harvesting Driven by Solar." Coatings 13, no. 1 (2023): 154. http://dx.doi.org/10.3390/coatings13010154.

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Facing the global freshwater resource crisis, using solar energy to produce fresh water resources in an environmentally friendly way, sorption-based atmospheric water harvesting driven by solar technology has attracted increasingly more attention. In the current research, the adsorbent MOF-801 has the advantages of a high adsorption capacity and is suitable for fields with a wide range of humidity. However, the strong interaction between the adsorbent and water molecules is conducive to rapid moisture absorption, but at the same time, the adsorbent needs higher heat to achieve regeneration, wh

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3

Zou, Yong, and Alírio E. Rodrigues. "Adsorbent Materials for Carbon Dioxide." Adsorption Science & Technology 19, no. 3 (2001): 255–66. http://dx.doi.org/10.1260/0263617011494141.

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The adsorption of carbon dioxide on adsorbent materials at high temperatures was critically reviewed. The present status of adsorbent materials for CO2 including carbon-based adsorbents, zeolites and metal oxide sorbents at high temperatures were discussed in detail. Research areas that may make a significant impact on the future development of adsorbent materials were advanced.

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4

Bhattacharjee, T. S., S. Ghadge, R. Khilari, et al. "Surface chemistry analysis of acidified and nickel impregnated carbon for desulfurization of fuels." IOP Conference Series: Materials Science and Engineering 1291, no. 1 (2023): 012001. http://dx.doi.org/10.1088/1757-899x/1291/1/012001.

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Abstract Emission norms tend to reduce sulfur content in transport fuels to 10ppm. Considering this new method like adsorptive desulfurization are widely researched. The main motive in adsorptive desulfurization is to selectively adsorb Dibenzothiophene (DBT) and 4,6-DimethylDBT. Considering this adsorbent with nickel impregnation and acidic surface functionalities were developed. Topographical and surface chemical features were studied of developed carbon adsorbents. Presence of carboxylic surface functionalities and reduced solid nickel was confirmed on adsorbents surfaces. In addition to th

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5

Lv, Yao, Jiangbo Wu, Jiewen Dong, and Tingwei Jia. "A Study of Hygroscopicity Improvements to Adsorbents in Solar-Powered Air Water Extraction." Coatings 14, no. 4 (2024): 472. http://dx.doi.org/10.3390/coatings14040472.

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As a global freshwater shortage is imminent, solar-powered adsorption-based atmospheric water harvesting technology is gradually attracting people’s attention due to its environmental friendliness and many other advantages. Among the many adsorbents used in this technology, MOF-801 has a large adsorption capacity in a wide range of humidity. In the current field, carbon materials are usually added to improve the photothermal properties of MOF-801, but hybrid adsorbents made in this way usually weaken the adsorption performance of MOF-801. If the MOF-801/carbon material adsorbent is used as a b

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6

Hawraa K. Al-Husseini. "Adsorption Of Clomid Drug On Activated Carbon And Zinc Oxide Surfaces." Journal of the College of Basic Education 21, no. 88 (2023): 37–48. http://dx.doi.org/10.35950/cbej.v21i88.9951.

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The research included study the adsorption of Clomid drug on the surface of activated carbon and zinc oxide. Many of parameters were studied which affect the adsorption process such as temperature, weight of adsorbent, equilibrium time, initial concentration and effect of pH. Activated carbon and zinc oxide were used as a model adsorbent in the experiments. We found that increased of temperature (30-50) °C followed by increased in adsorption capacity experiments were done at 30 °C and showed that the optimum weight of activated carbon was (0.15 g) whil

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7

Pereyra, Neysa, Urooj Kamran, Wilson Aguilar-Mamani, and Farid Akhtar. "Conversion of Glass Waste into Zeolite A Adsorbent for Efficient Ammonium Ion Adsorption from Aqueous Solution: Kinetic and Isotherm Studies." Processes 13, no. 3 (2025): 678. https://doi.org/10.3390/pr13030678.

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In this study, a zeolitic adsorbent (AGW-ZA) was successfully developed from glass waste (GW)-derived aluminosilicates. The GW, serving as the starting material, underwent alkaline activation and hydrothermal treatment to yield the AGW-ZA adsorbent, which exhibited a surface area of 216.48 m2/g. The AGW-ZA demonstrated significantly higher ammonium (NH4+) ion adsorption (142.5 mg/g at 1000 mg/L) than pristine GW (80.0 mg/g). Optimal adsorption experimental parameters were identified (0.1 g dosage, pH = 7, and 10 h contact time) to determine the maximum NH4+ ions’ adsorption potential by adsorb

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8

Cornejo, J., R. Celis, I. Pavlovic, and M. A. Ulibarri. "Interactions of pesticides with clays and layered double hydroxides: a review." Clay Minerals 43, no. 2 (2008): 155–75. http://dx.doi.org/10.1180/claymin.2008.043.2.01.

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AbstractThe increasing presence of pesticides in natural ecosystems has stimulated research to look for improved adsorbent materials which can be used to remediate and prevent soil and water contamination by these compounds. Among the different materials that have been assayed as adsorbents of pesticides are natural clay minerals, particularly 2:1 phyllosilicates and their structurally complementary synthetic analogues layered double hydroxides (LDHs). The great interest in natural clays and LDHs as adsorbent materials is mainly related to the large specific surface areas associated with their

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9

Schwantes, Daniel, Affonso Celso Gonçalves Junior, Henrique Alipio Perina, et al. "Ecofriendly Biosorbents Produced from Cassava Solid Wastes: Sustainable Technology for the Removal of Cd2+, Pb2+, and Crtotal." Adsorption Science & Technology 2022 (March 9, 2022): 1–18. http://dx.doi.org/10.1155/2022/5935712.

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This research is aimed at investigating the possible use of cassava agroindustry solid wastes in manufacturing adsorbents and their use in removing heavy metals Cd2+, Pb2+, and Crtotal from water. Thus, a pilot study was conducted in two main steps: (1) obtaining and characterizing the adsorbents and (2) laboratory studies focused on the evaluation of critical physicochemical parameters on adsorption, such as pH of the solution containing heavy metals, the effect of adsorbent dose, besides kinetics and equilibrium adsorption and desorption studies. Three adsorbents were studied, cassava barks,

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10

Cho, Young-Sang, Sol Jeong, and Soyoung Nam. "Synthesis of Porous Silica Particles for the Adsorption of Organic Dye in Aqueous Medium." Korean Journal of Metals and Materials 58, no. 5 (2020): 304–18. http://dx.doi.org/10.3365/kjmm.2020.58.5.304.

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This study investigated the removal of the organic dye like methylene blue using porous particles in a batch adsorption process. Porous silica microparticles were synthesized with macropores or meso-macropores and used as adsorbent particles. The hierarchically porous structures with additional mesopores were found to be more effective adsorbent than simple macroporous particles. The size of the macropores affected the adsorption capacity of the porous particles, and smaller pore size resulted in a larger amount of organic dye being adsorbed on the particle surface, due to increased surface ar

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11

Aksenenko, E. V., and Yu I. Tarasevich. "Non-Specific Adsorption of Hydrocarbons on Microporous Surfaces: A Comprehensive Molecular-Statistical/Chromatographic Approach." Adsorption Science & Technology 9, no. 2 (1992): 54–71. http://dx.doi.org/10.1177/026361749200900201.

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The results are presented of a series of investigations concerning the application of the molecular-statistical approach to the calculation of thermodynamic quantities for the adsorption of molecules in the Henry region on adsorbent surfaces possessing certain surface symmetry properties, and in particular for systems characterized by dispersion and polarization attraction and short-range atom-atom repulsion. Computational methods have been developed and the results for particular adsorption systems are presented with emphasis on the adsorption properties of layer silicates. Good correspondenc

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12

Mehralian, Mohammad, Zahra Goodarzvand Chegini, and Maryam Khashij. "Activated carbon prepared from pistachio waste for dye adsorption: experimental and CCD-based design." Pigment & Resin Technology 49, no. 2 (2019): 136–44. http://dx.doi.org/10.1108/prt-06-2019-0052.

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Purpose This study aims to activated carbon prepared from pistachio waste by using phosphoric acid as chemical activator agent. Activated carbon adsorbents were prepared from pistachio waste by using phosphoric acid as chemical activator agent. Design/methodology/approach The optimum conditions for the highest adsorption performance were determined by central composite design (CCD). The adsorbent was used for the adsorption of dye reactive black 5 (RB5), and the parameters affecting the adsorption were discussed like pH, initial concentration, contact time and adsorbent dosage. The adsorbent s

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13

Njewa, Joel Brian, Timothy Tiwonge Biswick, Ephraim Vunain, Cheruiyot Silas Lagat, and Solomon Omwoma Lugasi. "Synthesis and Characterization of Activated Carbon from Agrowastes for the Removal of Acetic Acid from an Aqueous Solution." Adsorption Science & Technology 2022 (June 6, 2022): 1–13. http://dx.doi.org/10.1155/2022/7701128.

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In this study, activated carbons prepared from agrowastes by chemical activation were used to remove acetic acid from an aqueous solution through a batch process. The prepared adsorbents were characterized by SEM, XRD, FT-IR, and point of zero charge (pHpzc). The effects of adsorbent dosage, initial concentration, and contact time were considered. Equilibrium data was tested using Langmuir, Freundlich, Temkin, and Frenkel–Halsey–Hill models. The degree of adsorption of acetic acid increased for both adsorbents as contact time, and adsorbent dosage and initial concentration were increased. The

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14

Basharat, Sumaira, Rabia Rehman, Tariq Mahmud, Sara Basharat, and Liviu Mitu. "Tartaric Acid-Modified Holarrhena antidysenterica and Citrullus colocynthis Biowaste for Efficient Eradication of Crystal Violet Dye from Water." Journal of Chemistry 2020 (December 15, 2020): 1–18. http://dx.doi.org/10.1155/2020/8862167.

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Two novel adsorbents Holarrhena antidysenterica (HA) and Citrullus colocynthis (CC) were collected from native Pakistan and treated with tartaric acid. The adsorbents were characterized by Fourier-transform infrared spectroscopy (FT-IR) and scanning electron microscopy, and their adsorptive behavior was studied against model cationic dye crystal violet (CV). Role of biosorbent dose, time of contact, temperature studies, agitation rates, and solution pH was investigated. Optimum conditions obtained for the removal of CV dye for H. antidysenterica-tartaric acid modified (HA-TA) were as follows:

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15

Shafiq, Muhammad, Abdulrahman Ali Alazba, and Muhammad Tahir Amin. "Functionalized Bentonite Clay Composite with NiAl-Layered Double Hydroxide for the Effective Removal of Cd(II) from Contaminated Water." Sustainability 14, no. 22 (2022): 15462. http://dx.doi.org/10.3390/su142215462.

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In this study, the efficiency of functionalized bentonite (F-bentonite) and NiAl-layered double hydroxide (LDH), as well as their nanocomposites, was explored regarding the adsorption of cadmium ions (Cd2+) in batch tests. Surface characterization using SEM, EDX, and FTIR analyses confirmed the successful loading of LDH (NiAl) onto the F-bentonite and the adsorption of Cd2+ onto the F-bentonite, LDH (NiAl), and LDH/F-bentonite composite adsorbent, suggesting ion exchange and surface precipitation as the main controlling mechanisms of the formation of adsorbent. An equilibrium contact period of

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16

Musah, M., J. T. Matthew, Y. Azeh, et al. "PREPARATION AND CHARACTERIZATION OF ADSORBENT FROM WASTE SHEA (Vitellaria paradoxa) NUT SHELL." FUDMA JOURNAL OF SCIENCES 8, no. 2 (2024): 338–44. http://dx.doi.org/10.33003/fjs-2024-0802-2370.

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The activated carbons (adsorbents) prepared in this study, were from Vitellaria paradoxa nut shell following the two steps of carbonization and activation processes using H3PO4 and KOH as activating agents and were labelled as HVP for H3PO4 modified adsorbent and KVP for KOH modified adsorbent. The activated carbons were characterized using standard methods of analysis. Bulk density (g/cm3) of the carbons (HVP and KVP) were 0.72±0.03 and 0.69±0.05, and attrition (%) values of 40.76±0.16 and 42.37±0.23 were obtained for HVP and KVP respectively. Results obtained also depict the presence of carb

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17

YEO, Kanfolo Franck Herve, Chaokun Li, Hui Zhang, Jin Chen, Wendong Wang, and Yingying Dong. "Arsenic Removal from Contaminated Water Using Natural Adsorbents: A Review." Coatings 11, no. 11 (2021): 1407. http://dx.doi.org/10.3390/coatings11111407.

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More than 170 million individuals have been influenced by arsenic (As) because of the ingestion of As-polluted groundwater. The presence of As in water bodies, particularly groundwater, has been found to become a widespread issue in the past few decades. Because arsenic causes extreme wellbeing impacts, even at a low concentration in drinking water, the innovations of As removal from contaminated water are of significant importance. Traditional strategies, for example, reverse osmosis, ion exchange, and electro-dialysis are generally utilized for the remediation of As-polluted water; however,

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18

Teng, Yue, Zhiying Liu, Ke Yao, et al. "Preparation of Attapulgite/CoFe2O4 Magnetic Composites for Efficient Adsorption of Tannic Acid from Aqueous Solution." International Journal of Environmental Research and Public Health 16, no. 12 (2019): 2187. http://dx.doi.org/10.3390/ijerph16122187.

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The use of attapulgite (ATP)-based materials for adsorption of pollutants from water and wastewater has received growing attention. However, recovering ATP-based adsorbents remains a challenge. In this study, a magnetic adsorbent ATP/CoFe2O4 with high tannic acid (TA) adsorptive capacity was fabricated via a facile co-precipitation approach and was well characterized. The loaded CoFe2O4 particles were embedded into the adsorbent surfaces to allow magnetic separability. For this material, its TA adsorption kinetics, isotherm behavior, and magnetic separation efficiency are reported. The develop

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19

Abbood, Baydaa Najim, and Lekaa Hussain Khadim. "Study - Thermodynamic Adsorption of Bismarck Brown Y on Different Adsorbent Surfaces." NeuroQuantology 20, no. 5 (2022): 672–83. http://dx.doi.org/10.14704/nq.2022.20.5.nq22223.

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Koura clay and pottery clay as a pecuniary besides conservational-approachable adsorbent, was consumed to eradicate of Bismarck Brown Y (BBY). Koura clay and pottery clay subdivision and other factors on the surface of Koura clay is (2h), while its adsorption on the surface of pottery clay was (0.5h), (Frendelich, Elovich, Temkin, Harkin – Jura and Dupin). The results showed (Bismarck Brown Y) for Koura clay follows Langmier model, while its adsorption on the surface of the pottery clay follows the (Elovich) model. The adsorption isotherm was also applied to obtain thermodynamic functions with

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20

Bharath Balji, G., and P. Senthil Kumar. "Adsorptive Removal of Alizarin Red S onto Sulfuric Acid-Modified Avocado Seeds: Kinetics, Equilibrium, and Thermodynamic Studies." Adsorption Science & Technology 2022 (November 10, 2022): 1–13. http://dx.doi.org/10.1155/2022/3137870.

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The present work evaluates the synthesis of a novel, inexpensive, and environmentally friendly chemically-treated avocado seed powder (CTASP) as an adsorbent in removing alizarin red S (ARS) from synthetic solution. By using a set of analytical techniques, including FTIR, XRD, EDX, RS, and SEM, the adsorbent was characterized for its physical and chemical properties. Batch study experiments were conducted to determine the effectiveness of the CTASP as an adsorbent. The maximum adsorption capacity of 67.08 mgg-1 was attained at optimum conditions of 3 gL-1 adsorbent dosage, pH 3, contact time o

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Lodyga, B., R. Narowski, A. Lodyga, and R. Leboda. "A Simple Method of Adsorbent Washing." Adsorption Science & Technology 11, no. 4 (1994): 235–42. http://dx.doi.org/10.1177/026361749401100406.

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A method and a design of an apparatus for continuous washing, under dynamic conditions, of products of surface reactions carried out on adsorbents with a highly developed surface are presented. The advantages of the method are illustrated by examples of the removal of surface mineral contaminations from active carbons (specific surface area ∼1150 m2/g) with hydrochloric acid. Application of the dynamic method reduced by several times the amount of water necessary to wash away HCl and mineral contaminations from the adsorbent surface and also substantially reduced the time necessary for the pur

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Nassar, Mamdouh M., Mohamed F. Hamoda, and Gamil H. Radwan. "Utilization of Palm-Fruit Bunch Particles for the Adsorption of Dyestuff Wastes." Adsorption Science & Technology 13, no. 1 (1996): 1–6. http://dx.doi.org/10.1177/026361749601300101.

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Particles prepared from palm-fruit bunches have been used in batch tests for the adsorption of a basic dye (BR 18) over a range of initial dye concentrations with adsorbent particle sizes varying in the range 106–300 μm. The results revealed the potential of palm-bunch particles as low-cost adsorbents. The uptake of the basic dye was higher at smaller adsorbent particle sizes. The adsorption isotherm followed both the Langmuir and Freundlich models. Values of the separation factor, R, indicate favourable adsorption for the basic dye/palm-fruit bunch particle system, i.e., 0 < R < 1 and n

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23

Souhuat, Alexander, Henry Fonda Aritonang, and Harry Steven Julius Koleangan. "Magnetically Active GO-Fe<sub>3</sub>O<sub>4</sub> Nanocomposite for Enhanced Rhodamine B Removal Efficiency." Indonesian Journal of Chemistry 24, no. 6 (2024): 1784. https://doi.org/10.22146/ijc.96383.

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According to the World Bank study, approximately 17–20% of water contamination is attributed to the textile industry. The quantity of waste produced increases as a result of increased productivity. Textile wastewater contains dyes such as rhodamine B (RhB), which are hazardous and challenging to remove using standard methods. Adsorption utilizing nano-adsorbents has been widely researched and developed to remove dyes from the environment because of its numerous advantages. Graphene oxide-magnetite (GO-Fe3O4) has been extensively explored as an adsorbent due to its large surface area, strong bo

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24

Yang, Hao, Yulong Sun, Qi Zhang, et al. "ZrMOX Particles for Enhanced Removal of Methyl Orange from Wastewater: Preparation, Characterization, and Adsorption Study." Adsorption Science & Technology 2022 (March 8, 2022): 1–11. http://dx.doi.org/10.1155/2022/9685352.

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The wide application of organic dyes in many industries has brought challenges to the effective treatment of organic wastewater. In this study, a series of ZrMOX (M: Fe, Co, Ni, Cu) particles were prepared by the coprecipitation method to adsorb methyl orange (MO) in aqueous solution. The adsorbents were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and N2 adsorption-desorption. The selected adsorbent with the best adsorption performance was ZrFeOX with a molar ratio of 1 : 1 and calcination temperature of 573 K;

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El-Azazy, Marwa, Ahmed S. El-Shafie, and Bayan Al-Shaikh Yousef. "Green Tea Waste as an Efficient Adsorbent for Methylene Blue: Structuring of a Novel Adsorbent Using Full Factorial Design." Molecules 26, no. 20 (2021): 6138. http://dx.doi.org/10.3390/molecules26206138.

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Adsorptive removal of methylene blue (MB) from contaminated water samples was achieved using green tea waste (GTW). Adsorption of MB onto raw (RGTW) and thermally treated waste (TTGTW250–TTGTW500) was explored. The performance of the tested adsorbents was assessed in terms of percentage removal of MB (%R) and adsorption capacity (qe, mg/g). A full factorial design (FFD) was employed to optimize the adsorption of MB onto both RGTW and TTGTW500. Four factors were studied: pH, adsorbent dose (AD), dye concentration (DC), and contact time (CT). Value for %R of 96.58% and 98.07% were obtained using

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26

Bhatti, Zulfiqar Ali, Khadija Qureshi, Ghulamullah Maitlo, and Shoaib Ahmed. "Study of PAN Fiber and Iron ore Adsorbents for Arsenic Removal." Civil Engineering Journal 6, no. 3 (2020): 548–62. http://dx.doi.org/10.28991/cej-2020-03091491.

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The main idea to conduct this study is the treatment of hazardous arsenite (As+3) and arsenate (As+5)from water by two efficient adsorbetns i.e. polyacrylonitrile fiber (organic) and iron ore (inorganic). Polyacrylonitrile (PAN) fibers were chemically modified prior to loading iron using a solution of diethylenetriamine and aluminum chloride hexahydrate. The characterization of PAN fibers was performed through FTIR spectroscopy, which shows the binding of functional groups on PAN fibers surfaces. Atomic absorption spectrometer (AAS) was used to analyze arsenic concentration in samples. The imp

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Leboda, R., W. Grzegorczyk, A. Lodyga, and A. Dabrowski. "Effect of Catalytic Gasification of Active Carbon from Plum Stones on its Mesoporous Structure." Adsorption Science & Technology 10, no. 1-4 (1993): 221–40. http://dx.doi.org/10.1177/0263617499010001-421.

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The possibilities of the development of a mesoporous structure during gasification of carbonaceous material with water vapour in the presence of a calcium(II) catalyst are demonstrated. Investigations have been carried out on active carbon prepared from plum stones. For comparison, the same experiments in the absence of the catalyst were also made. The characteristics of the micro- and meso-porous structures of the adsorbents have been determined from the adsorption–desorption isotherms of nitrogen. The data have been submitted to treatment from the BET, Harkins–Jura, Sing as well as Derjaguin

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Ortíz-de-Lira, Alejandra, Hilda Elizabeth Reynel-Ávila, Lizbeth Liliana Díaz-Muñoz, et al. "Sustainable Downstream Separation of Itaconic Acid Using Carbon-Based Adsorbents." Adsorption Science & Technology 2022 (March 10, 2022): 1–14. http://dx.doi.org/10.1155/2022/7333005.

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Separation of itaconic acid from aqueous solution has been explored using various carbon-based adsorbents obtained from the pyrolysis and KOH activation of coconut shell biomass. The best preparation conditions to obtain a tailored adsorbent for itaconic acid purification were identified via a Taguchi experimental design, where its adsorption properties were maximized. The best activated carbon was obtained via coconut shell pyrolysis at 750 °C for 4 h plus an activation with 0.1 KOH and a final treatment at 800 °C for 2 h. This adsorbent showed an adsorption capacity of 4.31 mmol/g at 20 °C a

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Yanishpolskii, V. V., J. Skubiszewska-Zieba, R. Leboda, V. A. Tertykh, and I. V. Klischar. "Methylene Blue Sorption Equilibria on Hydroxylated Silica Surfaces as Well as on Carbon–Silica Adsorbents (Carbosils)." Adsorption Science & Technology 18, no. 2 (2000): 83–95. http://dx.doi.org/10.1260/0263617001493305.

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The adsorption properties of hydroxylated silica gel as well as carbon–silica adsorbents (Carbosils) containing 5 and 18 w/w% carbon, both treated hydrothermally (with hydrogen peroxide solution) (HTT samples) and untreated, towards Methylene Blue (MB) were compared. The equilibrium adsorption of MB solutions of 6.5–7.0 × 10−4 mol/l concentration and its dependence on pH were studied. At this concentration, ca. 30% of the adsorbent surfaces investigated were covered with MB molecules under optimal adsorption conditions. The presence of carbon deposits on the silica surface did not lead to a de

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Onyeije, C. U., M. I. Iloamaeke, S. C. Ortutu, C. Onwuka, and C. Enyia. "SORPTION STUDY OF H2SO4ACTIVATED PERIWINKLE SHELL USING SEM AND XRD ANALYSIS." AnachemJournal 15, no. 1 (2024): 140–53. https://doi.org/10.5281/zenodo.14567510.

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The study focuses on the potential of periwinkle shells as an effective adsorbent for removing heavy metals, particularly copper ions, from industrial wastewater. The Scanning Electron Microscopy (SEM) analysis suggests that the activated carbon had a favourable porosity, with sharp adsorbent surfaces coated with Cu2+to create smooth surfaces. The results indicate that the activated carbon had a high surface area, which could enhance its adsorption capacity. The X-ray Diffraction (XRD) spectrometry suggests that the peaks in the range 2θ equal to 23.61, 24.1, and 27.5correspond to the ex

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Strøm, Bjørn, Dick Bedeaux, and Sondre Schnell. "Adsorption of an Ideal Gas on a Small Spherical Adsorbent." Nanomaterials 11, no. 2 (2021): 431. http://dx.doi.org/10.3390/nano11020431.

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The ideal gas model is an important and useful model in classical thermodynamics. This remains so for small systems. Molecules in a gas can be adsorbed on the surface of a sphere. Both the free gas molecules and the adsorbed molecules may be modeled as ideal for low densities. The adsorption energy, Us, plays an important role in the analysis. For small adsorbents this energy depends on the curvature of the adsorbent. We model the adsorbent as a sphere with surface area Ω=4πR2, where R is the radius of the sphere. We calculate the partition function for a grand canonical ensemble of two-dimens

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Santoso, Shella Permatasari, Artik Elisa Angkawijaya, Kuan-Chen Cheng, et al. "Unlocking the Potential of Gallic Acid-Based Metal Phenolic Networks for Innovative Adsorbent Design." Molecules 30, no. 6 (2025): 1218. https://doi.org/10.3390/molecules30061218.

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Metal phenolic networks (MPNs) have attracted significant attention due to their environmentally benign nature, broad compatibility, and universal adhesive properties, making them highly effective for modifying adsorbent surfaces. These supramolecular complexes are formed through the coordination of metal ions with natural phenolic ligands, resulting in stable structures while retaining the active adsorption sites of the ligands, thereby enhancing the adsorption performance of unmodified substrates. Among various MPNs, metal ion gallic acid (GA) networks are particularly well-known for their e

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Rizzo, Marcia de Mathias, and Jivaldo do Rosário Matos. "Synthesis and Use of Cellulose/SBA-15 Adsorbent Sheet for Cleaning Polychrome Surfaces on Works of Art." Semina: Ciências Exatas e Tecnológicas 44 (December 18, 2023): e47967. http://dx.doi.org/10.5433/1679-0375.2023.v44.47967.

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Paraloid B72™ acrylic varnish has been used in the conservation of cultural properties since 1950’s. With a Tg close to 40 oC, some substances can be adsorbed onto varnished surfaces. There are several methods for cleaning works of art, each with its own specificities. This article presents a new alternative method. The cellulose/SBA-15 adsorbent sheets act as containers for the cleaning material, allowing it to act on the surface of the pictorial layer, dissolving and adsorbing unwanted material from the painting, without causing problems such as penetration, paint abrasion, residues, etc. Th

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Shu Ying Ang, Nur Farhana Najwa, Hairul Nazirah Abdul Halim, et al. "Potential of fatty acid-modified spent tea leaves as adsorbent for oil adsorption." Progress in Energy and Environment 17, no. 1 (2022): 32–41. http://dx.doi.org/10.37934/progee.17.1.3241.

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Treatment of oil pollution remains a challenge due to the growing urbanisation. Thus, there is an increasing number of global studies on exploiting simple and effective methods to remove oil from water. In the present work, spent tea leaves (STL) have been modified using oleic acid (OA) and free fatty acids from waste cooking oil (FFA-WCO). The aim was to enhance the hydrophobicity of the STL so that they can act as an oil adsorbent. The functional groups of the fatty acids within the modified STL were identified using the Fourier Transform Infrared (FTIR) Spectroscopy analysis, while the surf

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Zhu, Yuanrong, Xianming Yue, and Fazhi Xie. "Adsorptive removal of phosphate by a Fe–Mn–La tri-metal composite sorbent: Adsorption capacity, influence factors, and mechanism." Adsorption Science & Technology 38, no. 7-8 (2020): 254–70. http://dx.doi.org/10.1177/0263617420942709.

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Reducing input of phosphorus is the key step for control of eutrophication and algal blooming in freshwater lakes. Adsorption technology is a cost-effective technology for phosphate removal in water for the purpose. Thus, in this study, a novel Fe–Mn–La tri-metal composite sorbent was developed, and then evaluated for phosphate removal. The results showed that the maximum adsorption capacity could be approached to 61.80 mg g−1 at 25°C under pH of 6.03. Adsorption of phosphate by Fe–Mn–La tri-metal composite adsorbent fitted better by pseudo-second-order kinetic equation and Langmuir model, whi

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Zahro, Septi Fatimatus, and Sandyanto Adityosulindro. "Literature Review: Penggunaan Bahan Berbasis Limbah Sebagai Adsorben untuk Degradasi Zat Warna pada Air Limbah." Jurnal Kesehatan Lingkungan Indonesia 22, no. 3 (2023): 359–68. http://dx.doi.org/10.14710/jkli.22.3.359-368.

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Latar belakang: Penggunaan adsorben bahan limbah dari limbah pertanian, industri maupun bahan alam menjadi alternatif baru dalam pengolahan air limbah yang mengandung zat warna. Limbah ini dapat menyebabkan berbagai masalah kesehatan bagi makhluk hidup mulai dari alergi, cidera permanen, asma, bahkan kanker. Tujuan review artikel ini adalah untuk memberikan informasi tren penelitian penggunaan adsorben dari bahan limbah dalam penyisihan zat warna serta informasi mengenai komposisi bahan, dan pengaplikasiannya sebagai potensi alternatif baru bahan adsorben dalam pengolahan limbah.Metode: Metode

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Garbacz, J. K., H. Kowalczyk-Dembińska, and A. Dabrowski. "Partially Mobile Adsorption of Single Gases on Graphitized Carbon Black Surfaces." Adsorption Science & Technology 14, no. 1 (1996): 69–76. http://dx.doi.org/10.1177/026361749601400107.

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An expression for the isosteric heat of partially mobile monolayer adsorption of a single gas on a heterogeneous adsorbent surface has been derived. Optimizations of the model parameters have been performed for selected experimental systems containing graphitized carbon black as an adsorbent.

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Rusanov, A. I., T. G. Movchan, and E. V. Plotnikova. "NEW CONCEPTS OF COLLOID SCIENCE: NANO-ADSORBENT AND PROTOMICELLE." Доклады Российской академии наук. Химия, науки о материалах 512, no. 1 (2023): 114–19. http://dx.doi.org/10.31857/s2686953523700218.

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Large molecules of dyes or other substances can play the role of a nano-adsorbent in aqueous surfactant solutions and, coated with surfactant molecules, resemble surfactant micelles with a solubilizate. Such micelle-like particles were called protomicelles. Their formation does not require a critical micelle concentration (CMC) and begins immediately when the surfactant is introduced into the solution. In this spectrophotometric study of Nile red (NR) in aqueous solutions of nonanoic acid (NOA), the case where protomicelles are more important than micelles is demonstrated for the first time. I

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Webley, Paul A., and Richard S. Todd. "Kinetics of Mixed Adsorbent Systems in Gas–Solid Adsorption." Adsorption Science & Technology 21, no. 1 (2003): 9–34. http://dx.doi.org/10.1260/02636170360699796.

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Mixtures of solid adsorbents often occur in the process industries through either accident or design. To model such systems, a common approach is to define a pseudo-adsorbent with equilibrium properties equal to the mass fraction weighted average of the components in the mixture. The selection of an appropriate mass-transfer rate constant for the mixture is, however, more complicated. In this study, we have derived simple relationships between the linear driving force rate constants for a pseudo-mixture in terms of the rate constants, equilibrium parameters and mass fractions of the components

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Cysewski, P., J. K. Garbacz, S. Biniak, A. Swiatkowski, and A. Dabrowski. "Description of Isotherms of Two-Component Non-Electrolyte Solution Adsorption onto Solids with Structural Heterogeneity of Adsorbents Taken into Consideration." Adsorption Science & Technology 5, no. 2 (1988): 106–15. http://dx.doi.org/10.1177/026361748800500202.

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The concepts of Stoeckli as well as those of Wojsz and Rozwadowski have been adopted for describing adsorption from two-component non-electrolyte liquid mixtures at solid adsorbents taking into account structural heterogeneity of the adsorbent. Some new global adsorption equations have been obtained and verified on the basis of experimental data.

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Karimi Darvanjooghi, Mohammad Hossein, Seyyed Mohammadreza Davoodi, Arzu Y. Dursun, Mohammad Reza Ehsani, Iman Karimpour, and Elham Ameri. "Application of treated eggplant peel as a low-cost adsorbent for water treatment toward elimination of Pb2+: Kinetic modeling and isotherm study." Adsorption Science & Technology 36, no. 3-4 (2018): 1112–43. http://dx.doi.org/10.1177/0263617417753784.

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In this study, treated eggplant peel was used as an adsorbent to remove Pb2+ from aqueous solution. For this purpose batch adsorption experiments were performed for investigating the effect of contact time, pH, adsorbent dose, solute concentrations, and temperature. In order to assess adsorbent’s physical and chemical properties, Fourier transform infrared spectroscopy, scanning electron microscopy, and energy dispersive X-ray spectroscopy were used. The results showed that the adsorption parameters for reaching maximum removal were found to be contact time of 110 min, adsorbent dose of 0.01 g

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NASIRUDDIN KHAN, M., and ANILA SARWAR. "DETERMINATION OF POINTS OF ZERO CHARGE OF NATURAL AND TREATED ADSORBENTS." Surface Review and Letters 14, no. 03 (2007): 461–69. http://dx.doi.org/10.1142/s0218625x07009517.

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Although particle size and its measurement are intuitively familiar to particle technologists, the concept of point of zero charge (pzc) is less widely understood and applied. This is unfortunate since it is at least as fundamentally important as particle size in determining the behavior of particulate materials, especially those with sizes in the colloidal range below a micrometer. pzc is related to the charge on the surface of the particle and strongly depends on the pH of the material; so it influences a wide range of properties of colloidal materials, such as their stability, interaction w

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Kinoshita, Tomohiro, Kenneth E. Noll, and Eiji Furuya. "Experimental conditions of differential reactor method for resin–phenolic compound system." Adsorption Science & Technology 36, no. 1-2 (2017): 343–54. http://dx.doi.org/10.1177/0263617417692340.

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For the design of a fixed-bed reactor, intraparticle diffusivity of adsorbents is one of the most important parameters. However, determining this diffusivity is difficult as measuring the effects of fluid film resistance of adsorbents. Shallow-bed (differential reactor) technique is commonly used to determine intraparticle diffusivity. The conventional shallow-bed technique is based on the assumption that fluid film resistance is negligible because of high fluid velocity; hence, the fluid film mass transfer is not calculated. For an activated carbon–phenolic compound system, both intraparticle

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BlasińSki, H., J. KaźMierczak, and A. Wolborska. "Kinetics of Adsorption from Single and Binary Solutions on Activated Carbons with Chemically Different Surfaces." Adsorption Science & Technology 12, no. 4 (1995): 297–305. http://dx.doi.org/10.1177/026361749501200404.

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The effective surface diffusion coefficient DS for model adsorption systems was determined experimentally in a mixer tank with a constant solution volume. As an adsorbent, modified activated carbons with chemically different surfaces were used. The adsorbates were single and binary aqueous solutions of 10 phenolic compounds. The effect of the physicochemical parameters characteristic for the adsorption system (pure energy of adsorption, dipole moment, molar reaction, parachor, solubility, molecular diffusion coefficient in water) on changes in the DS values was analyzed. It was observed that t

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Sircar, S. "Applications of Gas Separation by Adsorption for the Future." Adsorption Science & Technology 19, no. 5 (2001): 347–66. http://dx.doi.org/10.1260/0263617011494222.

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The separation and purification of gas mixtures by adsorption has found numerous industrial applications during the past 30 years. The very active research and development in this field is driven by (a) the highly flexible nature of cyclic adsorptive process designs, (b) the availability of many adsorbents for the separation and (c) the multiple choice of adsorbent–process design combinations for achieving the desired separation goals. The trend is to improve the product quality and separation efficiency, as well as to increase the scale of application of this technology. The design of process

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Sari, Meidita Kemala, Rahmat Basuki, and Bambang Rusdiarso. "Adsorption of Pb(II) from Aqueous Solutions onto Humic Acid Modified by Urea-Formaldehyde: Effect of pH, Ionic Strength, Contact Time, and Initial Concentration." Indonesian Journal of Chemistry 21, no. 6 (2021): 1371. http://dx.doi.org/10.22146/ijc.64600.

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Humic acid (HA) and urea-formaldehyde (UF) have been frequently reported as heavy metal adsorbents. However, the literature has never written HA modification by UF to improve the adsorbent’s performance. In this study, a new adsorbent of humic acid-urea formaldehyde (HA-UF) was synthesized. The reaction of the conducted the formation of HA-UF –COOH group of HA with the –NH2 group of UF was evidenced by decreasing total acidity from 549.26 cmol/kg (in HA) to 349.30 cmol/kg (in HA-UF). The success of HA-UF formation was characterized by attenuated total reflection-infrared (ATR-IR), energy dispe

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Boongoi, P., M. Opaprakasit, and O. Boondamnoen. "Waste tire rubber as heavy metal ion adsorbent." Journal of Physics: Conference Series 2175, no. 1 (2022): 012030. http://dx.doi.org/10.1088/1742-6596/2175/1/012030.

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Abstract The objective of this work was to develop waste tire rubber (WTR) as a heavy metal ion (Cu(II)) adsorbent. Effects of heat and acid treatment on efficiency of Cu(II) removal were examined from h-WTR, a-WTR, h/a-WTR and a/h-WTR with 40 mesh size. Results from UV-Vis spectrometer revealed that, at 0.5g/50ml adsorbent dosage, h-WTR had higher %removal of Cu(II) than other treated-WTRs. This may result from the highest surface area (51.61 m2/g) and pore volume (0.24 cm3/g) of h-WTR. The pores were possibly formed by the departure of small compounds generated from the rubber degradation. O

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Sych, O. Ya, Yu M. Kilivnik, M. M. Pop, H. V. Vasylyeva, V. Yu Lazur, and O. H. Okunev. "Investigation of radiation resistance of adsorbents using the 90Sr – source." Himia, Fizika ta Tehnologia Poverhni 15, no. 1 (2024): 94–101. http://dx.doi.org/10.15407/hftp15.01.094.

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Purifying aqueous solutions from radioactive contamination is an extremely relevant scientific topic today. Many organic and inorganic adsorbents can be recommended for the adsorption of heavy metal ions and radionuclides from aqueous solutions, or as carriers for storage and disposal of radioactive waste. Since radionuclides are sources of ionizing radiation, the radiation resistance of the adsorbent is an important characteristic. These studies aim to investigate the titanium silicate behavior and its adsorption properties' changes or their invariability in the field of intense β-radiation.

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Loganathan, Paripurnanda, Jaya Kandasamy, Harsha Ratnaweera, and Saravanamuthu Vigneswaran. "The Incorporation of Adsorbents with Contrasting Properties into the Soil Substrate for the Removal of Multiple Pollutants in Stormwater Treatment for the Reuse of Water—A Review." Water 17, no. 13 (2025): 2007. https://doi.org/10.3390/w17132007.

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Stormwater carries significant amounts of pollutants—including metals, microorganisms, organic micropollutants, and nutrients—from land surfaces into nearby water bodies, leading to water quality deterioration and threats to both human health and ecosystems. The removal of these contaminants is essential not only for environmental protection, but also to enable the reuse of treated water for various beneficial applications. Common treatment methods include bioretention systems, biofiltration, constructed wetlands, rain gardens, swales, and permeable pavements. To improve pollutant removal effi

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Lima, William Cardoso, Leandro S. Oliveira, and Adriana S. Franca. "Adsorption of Phenylalanine from Aqueous Solutions Using Activated Carbon from Sunflower Meal Functionalized with Sulfonic Groups." Foods 11, no. 21 (2022): 3427. http://dx.doi.org/10.3390/foods11213427.

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The present work proposes the use of an agro-industrial residue from the sunflower crop as a feedstock to produce a low-cost adsorbent with a chemically modified surface bearing sulfonic groups. This modified low-cost adsorbent can be used for the removal of phenylalanine, and can also be applied in the process of obtaining a source of protein supplementation for patients with phenylketonuria. The functionalization of the adsorbent with sulfonic groups was adapted and presented advantages in terms of execution time, energy expenditure, number of reagents used and adsorbed amino acids. The prod

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