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Journal articles on the topic 'Enhanced bentonite'

Author: Grafiati

Published: 14 March 2023

Last updated: 31 July 2025

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1

Osacky, M., V. Šucha, M. Miglierini, and J. Madejová. "Reaction of bentonites with pyrite concentrate after wetting and drying cycles at 80°C: relevance to radioactive waste (Radwaste) storage." Clay Minerals 47, no. 4 (2012): 465–79. http://dx.doi.org/10.1180/claymin.2012.047.4.06.

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AbstractThe mineral stability of two bentonites was studied in the presence of pyrite concentrate to simulate the possible reactions between the bentonite barrier used in a high-level nuclear waste (HLW) repository and host rock containing up to 5 wt.% of admixed pyrite. Smectite was the only bentonite mineral affected by pyrite treatment under the experimental conditions used. Bentonites reacted differently with pyrite due to the different nature of the smectites. The distinct crystal chemistry of the smectites controlled by the composition of the parent rocks influenced the smectite surface

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2

Mannu, Alberto, Simona Castia, Giacomo Luigi Petretto, Sebastiano Garroni, Franca Castiglione, and Andrea Mele. "Exploring the Structure–Activity Relationship of Bentonites for Enhanced Refinement of Recycled Vegetable Oil." Materials 18, no. 5 (2025): 1059. https://doi.org/10.3390/ma18051059.

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The use of bentonite for recycling vegetable oils presents challenges, as even minor variations in the clay composition and structure can lead to significant differences in its ability to retain various chemical groups. This study investigates the structure–activity relationship of four bentonites—two hydrophilic and two hydrophobic (both in commercial and ground forms)—to better understand these effects. Solid-state NMR spectroscopy revealed subtle differences between hydrophobic and hydrophilic materials, as well as distinctions between ground and unground hydrophilic clays, through 29Si and

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3

Sudheer Kumar, Ritwick, Carolin Podlech, Georg Grathoff, Laurence N. Warr, and Daniel Svensson. "Thermally Induced Bentonite Alterations in the SKB ABM5 Hot Bentonite Experiment." Minerals 11, no. 9 (2021): 1017. http://dx.doi.org/10.3390/min11091017.

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Pilot sites are currently used to test the performance of bentonite barriers for sealing high-level radioactive waste repositories, but the degree of mineral stability under enhanced thermal conditions remains a topic of debate. This study focuses on the SKB ABM5 experiment, which ran for 5 years (2012 to 2017) and locally reached a maximum temperature of 250 °C. Five bentonites were investigated using XRD with Rietveld refinement, SEM-EDX and by measuring pH, CEC and EC. Samples extracted from bentonite blocks at 0.1, 1, 4 and 7 cm away from the heating pipe showed various stages of alteratio

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4

Chen, Li, Yanbo Zhou, Xiaoqian Wang, Thomas Zwicker, and Jun Lu. "Enhanced oil–mineral aggregation with modified bentonite." Water Science and Technology 67, no. 7 (2013): 1581–89. http://dx.doi.org/10.2166/wst.2013.013.

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The application of modified-bentonite-enhanced oil dispersion in water and oil–mineral aggregate (OMA) formation was studied in the laboratory. The effect of modification on the surface properties of bentonite was characterized. The hydrophobicity and surface electric properties of bentonite were significantly improved by attaching cetyltrimethyl ammonium bromide to its surface. The results showed that surface properties of bentonite played an important role in OMA formation. Spherical droplets of OMAs were formed with natural bentonite and elongated solid OMAs and flake OMAs were formed with

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5

Mota-Heredia, Carlos, Jaime Cuevas, and Raúl Fernández. "Effect of Iron Chloride (II) on Bentonites under Hydrothermal Gradients: A Comparative Study between Sodium Bentonite and Calcium Bentonite." Minerals 14, no. 2 (2024): 132. http://dx.doi.org/10.3390/min14020132.

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This study investigates the performance of two bentonite materials, specifically MX-80 (Na-bentonite) and FEBEX (Ca-Mg-Na-bentonite), employed as engineered barriers in deep geological disposal facilities for the isolation of high-level radioactive waste, contained in metallic canisters. Experiments conducted at the laboratory scale focused on the interaction of these bentonites with FeCl2 powder, used as a soluble iron source, to observe enhanced alteration of the bentonite. The experiments were carried out under a hydrothermal gradient. A dominant Na-Cl-SO4 saline solution was put in contact

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6

Al-Taey, Duraid K. A., Ahmed J. Hussain, and Haider J. Kadhum. "Bentonite Impact on Soil Properties and Biological Activity in the Face of Drought : A Review." IOP Conference Series: Earth and Environmental Science 1262, no. 4 (2023): 042058. http://dx.doi.org/10.1088/1755-1315/1262/4/042058.

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Abstract The clay mineral bentonite has received a lot of attention for its potential to reduce the harmful effects of drought on soil health and biological activity. Reduced enzymatic activity and microbial diversity are two negative outcomes of the drought’s impact on soil quality. Bentonite, however, has been shown to aid in the restoration of biological functions in drought-affected soils. Bentonite’s function as a soil moisture retainer is an important consideration. Bentonite acts as a reservoir, trapping water within its layers due to its high water-holding capacity and ability to form

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7

Sun, Yongshuai, and Anping Lei. "Enhanced Compressive Strength of the Bentonite-Amended Cement via Bio-Mineralization." Advances in Materials Science and Engineering 2022 (September 27, 2022): 1–9. http://dx.doi.org/10.1155/2022/7220528.

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Bentonite, a supplementary cementitious material for Portland cement, has greatly contributed to environmental sustainability. However, few studies have investigated mortar samples produced by substituting bentonite for cement, and cement strength may be adversely affected when cement is replaced with bentonite in larger proportions. Therefore, this paper investigates and discusses the effect of microbially induced calcium carbonate precipitation (MICP) on improving the strength of bentonite-amended cement. The bio-mineralization process of MICP was characterized by SEM-EDS, while the biominer

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8

Zunic, Marija, Aleksandra Milutinovic-Nikolic, Natasa Jovic-Jovicic, et al. "Modified bentonite as adsorbent and catalyst for purification of wastewaters containing dyes." Chemical Industry 64, no. 3 (2010): 193–99. http://dx.doi.org/10.2298/hemind091221023z.

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Modification and characterization of bentonite from location Bogovina, Serbia was performed in order to obtain material applicable in wastewater purification. The <75?m bentonite fraction was used in organobentonite synthesis while the <2?m bentonite fraction, obtained by hydroseparation was used in pillaring procedure. Organo-modification of bentonite was performed with (1-hexadecyl)trimethylammonium bromide (HDTMA-Br). Pillared bentonite was obtained using standard procedure. Al3+ and Fe3+ ions were incorporated in pillars in 4:1 ratio and applied as catalyst in catalytic wet peroxide

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9

Annan, Ebenezer, Emmanuel Nyankson, Benjamin Agyei-Tuffour, et al. "Synthesis and Characterization of Modified Kaolin-Bentonite Composites for Enhanced Fluoride Removal from Drinking Water." Advances in Materials Science and Engineering 2021 (January 16, 2021): 1–12. http://dx.doi.org/10.1155/2021/6679422.

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Fluoride-contaminated drinking waters are known to cause severe health hazards such as fluorosis and arthritis. This paper presents the encapsulation of iron oxide nanoparticles in kaolin-bentonite composites adsorbents (KBNPs) for the removal of fluoride from drinking water by adsorption compared with kaolin-bentonite composite (KB). Adsorbents with an average weight of ∼200 mg and ∼7 mm diameter (granules) were prepared in the ratio of 10 : 10 : 0.1 for kaolinite, bentonite, and magnetite nanoparticles, respectively. The granules were air-dried and calcined at 750°C and contacted with 2 mg/L

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10

Liu, Qian, Ruihua Huang, Bingchao Yang, and Yanping Liu. "Adsorption of fluoride from aqueous solution by enhanced chitosan/bentonite composite." Water Science and Technology 68, no. 9 (2013): 2074–81. http://dx.doi.org/10.2166/wst.2013.456.

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In this work, enhanced chitosan/bentonite composite was prepared by treating chitosan/bentonite composite with concentrated hydrochloric acid (HCl). The adsorption of fluoride ions from aqueous solution onto the enhanced chitosan/bentonite composite was investigated. Adsorption studies were performed in a batch system, and the effects of various parameters, such as the pH value of the solution, adsorbent dosage and initial fluoride concentration, were evaluated. The optimum operating conditions for fluoride removal by the enhanced chitosan/bentonite composite were pH = 7 or so, and adsorbent d

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11

Zhou, Feng-shan, Jie Li, Lin Zhou, and Yang Liu. "Preparation and Mechanism of a New Enhanced Flocculant Based on Bentonite for Drinking Water." Advances in Materials Science and Engineering 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/579513.

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Bentonite is characterized by the large specific surface, good adsorption, ion exchange ability, and nontoxicity. An enhanced bentonite base composite flocculant (BTA) can be prepared from treating the calcium base bentonite and compositing various functional additives. Bentonite was firstly treated by citric acid, then the talc and activated carbon turned to be acid part and simultaneously the part that was treated by sodium bicarbonate and calcium hydroxide turned to be alkaline part, and finally the acid bentonite part and alkaline bentonite part were mixed up with preground powder of polym

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12

Liu, Xue Gui, Chang Feng Liu, Hong Shao, and En De Wang. "Studies on a New Type of Crosslinked Polyacrylamide Bentonite Composite." Advanced Materials Research 152-153 (October 2010): 666–69. http://dx.doi.org/10.4028/www.scientific.net/amr.152-153.666.

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In this paper, a peroxide-tertiary amine oxidation-reduction initiator system was used to synthesize a cross-linked polyacrylamide/bentonite composite at room temperature. The composite could contain up to 50% bentonite. Performance studies showed that the salt tolerance of the composite was enhanced compared to bentonite. The structure of the composite was characterized and analyzed by XRD, FTIR, and TG. Other than a slight increase in the interlamellar spacing, the structure of bentonite did not change during its aggregation. The composite therefore had enhanced dispersion properties and imp

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13

Handayani, H., M. I. Fathurrohman, A. Ramadhan, and N. A. Sutisna. "Effect of Organomodified Bentonite/Silica Hybrid Filler Compound System on Mechanical Properties and Sealing Performance of NR/NBR Rubber Seal for LPG Tube Valve." Asian Journal of Chemistry 34, no. 11 (2022): 2879–86. http://dx.doi.org/10.14233/ajchem.2022.23881.

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Organomodified bentonite and silica were used as hybrid fillers in natural rubber (NR)/nitrile butadiene rubber (NBR) seal for liquified petroleum gas (LPG) tube valve compound to evaluate their interaction and influence on mechanical properties and sealing performance. In this work, the NR-organomodified bentonite were prepared by the in situ organomodified and latex compounding method with varying amounts of bentonite then applied in the silica-NR/NBR rubber seal compounds with mixing process held in two rolls open mill. Silanization reaction, Payne effect, curing characteristics, tensile pr

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14

Mollins, L. H., D. I. Stewart, and T. W. Cousens. "Drained strength of bentonite-enhanced sand." Géotechnique 49, no. 4 (1999): 523–28. http://dx.doi.org/10.1680/geot.1999.49.4.523.

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15

He, Haijie, Tao Wu, Xiaole Shu, et al. "Enhanced Organic Contaminant Retardation by CTMAB-Modified Bentonite Backfill in Cut-Off Walls: Laboratory Test and Numerical Investigation." Materials 16, no. 3 (2023): 1255. http://dx.doi.org/10.3390/ma16031255.

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Adding organically modified bentonite into impervious wall materials may improve the adsorption of organic pollutants. In this study, cetyltrimethylammonium bromide organically modified bentonite (CTMAB bentonite) was mixed with sodium bentonite and kaolin to obtain two materials, which were then used as cut-off walls for typical pollutants. Soil column consolidation tests, diffusion tests, and breakdown tests were conducted to study migration of organic pollutants in soil columns. The parameter sensitivity of pollutant transport in the cut-off wall was analysed by numerical simulation. The so

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16

Cao, Benyi, Yunhui Zhang, and Abir Al-Tabbaa. "SEBS-Polymer-Modified Slag–Cement–Bentonite for Resilient Slurry Walls." Sustainability 14, no. 4 (2022): 2093. http://dx.doi.org/10.3390/su14042093.

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In spite of the well-established design and construction approaches of slag–cement–bentonite slurry walls, the materials deteriorate inevitably in contaminated land. The development of effective materials which are sustainable, resilient and self-healing over the lifetime of slurry walls becomes essential. This study, for the first time, adopts a styrene–ethylene/butylene–styrene (SEBS) polymer to modify slag–cement–bentonite materials to enhance mechanical and self-healing performance. The results show that the increase in SEBS dosage results in significantly increased strain at failure, indi

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17

V M, Aleena, Abin Sabu, Adharsh M Pradeep, Ashil M Varghese, and Lt Abhijith Kumar A N. "Investigation of Enhanced Landfill Liners Using Kuttanad Clay." E3S Web of Conferences 529 (2024): 03020. http://dx.doi.org/10.1051/e3sconf/202452903020.

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Landfill liners are layers of materials used to protect soil and groundwater from contaminants. A study aims to improve the performance and effectiveness of these liners by using bentonite and fly ash as amending materials. The research aims to contribute to the sustainable waste management practices by offering cost-effective and environmentally friendly alternatives for landfill liner construction. By using locally available materials, the proposed amended liners can reduce dependency on imported materials and minimize the environmental footprint associated with conventional liner systems. T

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18

Jiang, Yuexiu, Tongxia Huang, Lihui Dong, et al. "Mn Modified Ni/Bsentonite for CO2 Methanation." Catalysts 8, no. 12 (2018): 646. http://dx.doi.org/10.3390/catal8120646.

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To enhance the low-temperature catalytic activity and stability of Ni/bentonite catalyst, Ni-Mn/bentonite catalyst was prepared by introducing Mn into Ni/bentonite catalyst and was used for CO2 methanation. The results indicated that the addition of Mn enhanced the interaction between the NiO and the bentonite carrier, increased the dispersion of the active component Ni and decreased the grain size of the active component Ni, increased the specific surface area and pore volume of the Ni/bentonite catalyst, and decreased the average pore size, which suppressed the aggregation of Ni particles gr

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19

Al-Essa, Khansaa. "Activation of Jordanian Bentonite by Hydrochloric Acid and Its Potential for Olive Mill Wastewater Enhanced Treatment." Journal of Chemistry 2018 (2018): 1–10. http://dx.doi.org/10.1155/2018/8385692.

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Jordanian bentonite was activated by hydrochloric acid at room temperature. FTIR, XRD, TGA, and BET surface area analyses of the samples were carried out to examine the structure of bentonite before and after acid activation. It is found that the octahedral cations were removed, which altered the chemical composition of the bentonite. Difference of surface area was noticed (66.2 to 287.8 m2 g−1), which was caused by structural changes in the bentonite. We aimed to investigate the effectiveness of activated bentonite in OMWW treatment. Batch and column techniques were applied. Crude and treated

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20

Wang, Guang Hua, Dong Wan, Wen Bing Li, and Kun Chen. "Preparation and Adsorbability for Orange II of CTAB Modified Bentonite." Advanced Materials Research 807-809 (September 2013): 530–33. http://dx.doi.org/10.4028/www.scientific.net/amr.807-809.530.

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Surfactant modified bentonite was prepared using cetyltrimethylammonium bromide (CTAB) by a simple ion exchange method, and the organification of bentonite was proved by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron micrographic (SEM). The adsorption of Orange II(OII) dye onto CTAB modified bentonite was carried out. Compared with natural bentonite, the adsorption capacity of CTAB-Bent for OII was greatly enhanced. The adsorption isotherm of OII was in good agreement with the Langmuir equation.

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21

Liu, Jiandi, Yanzhi Meng, Yuze Zhang, et al. "Effect of Phosphoric Acid on the Properties of Sodium Bentonite and Its Mechanism." Molecules 30, no. 4 (2025): 843. https://doi.org/10.3390/molecules30040843.

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Expansive soils, widely distributed in nature, often pose challenges to construction stability due to their low unconfined compressive strength (UCS), poor shear strength, and high expansibility. This study investigates the application of phosphoric acid (H3PO4) in modifying sodium bentonite, focusing on its effects on the mechanical properties and swelling behavior of bentonite, as well as the underlying mechanisms. H3PO4 was added to bentonite at mass ratios of 1% to 8%. Compared to unmodified bentonite, the plastic index of the modified bentonite decreased by 39.9%, and the UCS value increa

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Sellin, Patrik, Mary Westermark, Olivier Leupin, et al. "Beacon: bentonite mechanical evolution." EPJ Nuclear Sciences & Technologies 6 (2020): 23. http://dx.doi.org/10.1051/epjn/2019045.

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The aim of Beacon is to develop the understanding of fundamental processes that lead to material homogenisation, as well as to improve capabilities for numerical modelling. In earlier assessments of bentonite EBS, the mechanical interaction between the installed bentonite components has been neglected and an “ideal” final state has generally been assumed. Key features of the project are (1) re-evaluation of the available knowledge to extract the crucial data to compile the qualitative and quantitative data and to enhance the conceptual understanding. (2) Enhanced, robust and practical numerica

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23

Ahmad Awan, Israr, Syed Saqib Mehboob, and Raja Wajaht Zahoor Khan. "Experimental Investigation of Mechanical and Microstructural Properties of Concrete Containing Bentonite and Dolomite as a Partial Replacement of Cement." Jurnal Kejuruteraan 35, no. 6 (2023): 1279–87. http://dx.doi.org/10.17576/jkukm-2023-35(6)-02.

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In this study, the effect of bentonite (BT) and dolomite (DT) on the mechanical and microstructural properties of concrete was evaluated on nine mixes. Cement was replaced with bentonite and dolomite by weight with varying mix ratios. The mixes are divided as M1 (Control mix), M2 (2.5% BT), M3 (2.5% DT), M4 (5% BT), M5 (5% DT), M6 (10% BT), M7 (10% DT), M8 (2.5% BT and 2.5% DT), and M9 (5% BT and 5% DT). Concrete specimens were subjected to mechanical and microstructural analysis tests. Mechanical test results show that the addition of bentonite (2.5%, 5%, and 10% ) leads to an increase in com

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Stewart, D. I., Y. Y. Tay, and T. W. Cousens. "The strength of unsaturated bentonite-enhanced sand." Géotechnique 51, no. 9 (2001): 767–75. http://dx.doi.org/10.1680/geot.2001.51.9.767.

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25

Yang, Zonghan, Yajun Zhang, Yuhuan Zhu, Yuxin Li, and Rongbing Fu. "The Strength, Permeability, and Microstructure of Cement–Bentonite Cut-Off Walls Enhanced by Polypropylene Fiber." Sustainability 17, no. 8 (2025): 3656. https://doi.org/10.3390/su17083656.

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Cement–bentonite cut-off walls are widely used in geoenvironmental engineering such as landfill liners and contaminated site remediation, due to their low permeability and structural stability. However, excessive cement use reduces the swelling capacity of bentonite and increases environmental burdens. This study proposes incorporating polypropylene fibers (PPFs) into cement–bentonite cut-off walls to improve their performance under lower cement dosages. A total of 16 formulations were tested with different cement and fiber contents. Unconfined compressive strength (UCS), direct shear, and fal

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Assi, Amel Habeeb, Ramzi Riyadh Khazeem, Ahmed Salah Salem, and Alaa Tahseen Ali. "Studying the Effects of Different Polymers on Rheological Properties of Water Base Muds." Journal of Engineering 24, no. 12 (2018): 12–25. http://dx.doi.org/10.31026/j.eng.2018.12.02.

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This research is focusing on finding more effective polymers that leads to enhance the rheological properties of Water Base Muds. The experiments are done for different types of mud for all substances which are Polyacrylamide, Xanthan gum, CMC (Carboxyl Methyl Cellulose). This study shows the effect of add polymer to red bentonite mud, effect of add polymer to Iraqi bentonite mud, the effect of add bentonite to polymer mud. The mud properties of Iraqi bentonite blank are enhanced after adding the polymers to the blank mix, CMC gives the highest value of plastic viscosity and Gel strength than

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Elmoutez, Salaheddine, Hafida Ayyoub, Mohamed Chaker Necibi, Azzedine Elmidaoui, and Mohamed Taky. "Enhanced Pollutant Removal and Antifouling in an Aerobic Ceramic Membrane Bioreactor with Bentonite for Pharmaceutical Wastewater Treatment." Membranes 14, no. 10 (2024): 205. http://dx.doi.org/10.3390/membranes14100205.

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This study examined the impact of adding bentonite clay (concentration of 1.5 to 10 g/L) to a pilot-scale aerobic ceramic membrane bioreactor (AeCMBR) for treating pharmaceutical wastewater (PhWW). The hydraulic retention time (HRT) was maintained at 24 h; the dissolved oxygen was between 2 mg/L (on) and 4 mg/L (off) throughout operation. Organic and nitrogen pollution removal rates and heavy metal (Cu, Ni, Pb, Zn) reduction rates were assessed. The chemical oxygen demand (COD) removal efficiency exceeded 82%. Adsorption improved ammonia (NH4+) removal to 78%; the addition of 5 g of bentonite

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Rao, Sudhakar M., A. Sridharan, and M. R. Shenoy. "Influence of starch polysaccharide on the remoulded properties of two Indian clay samples." Canadian Geotechnical Journal 30, no. 3 (1993): 550–53. http://dx.doi.org/10.1139/t93-047.

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The reported presence in marine clays and the recognized role of polysaccharide as a bonding agent provided the motivation to examine the role of starch polysaccharide in the remoulded properties of nonswelling (kaolinite) and swelling (bentonite) groups of clays. The starch polysaccharide belongs to a group of naturally occurring, large-sized organic molecules (termed polymers) and is built up by extensive repetition of simple chemical units called repeat units. The results of the study indicate that the impact of the starch polysaccharide on the remoulded properties of clays is dependent on

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Mohammedi, N., F. Zoukrami, and N. Haddaoui. "Preparation of Polypropylene/Bentonite Composites of Enhanced Thermal and Mechanical Properties using L-leucine and Stearic Acid as Coupling Agents." Engineering, Technology & Applied Science Research 11, no. 3 (2021): 7207–16. http://dx.doi.org/10.48084/etasr.4148.

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The compatibilization of raw bentonite (bent) with a polymer matrix of polypropylene (PP) can improve the performance of the material in terms of thermal and mechanical properties. In this study, two kinds of untreated bentonite, bentonite-Maghnia (bent-m) and bentonite-Mostaganem (bent-M), that differ in the proportion of Al2O3 and in the particle size distribution were coupled to typical maleic anhydride grafted polypropylene PP-MA. Stearic Acid (SA) and L-leucine Amino Acid (AA) were selected as new coupling modifiers at a 5/5 ratio of bentonite/coupling agent. All PP/bent composites were p

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Lamghari, Chayma, Laila Baroudi, Mohammed Nor, et al. "Purified bentonite from Nador, Morocco: A sustainable adsorbent for caffeine removal from aqueous solutions." E3S Web of Conferences 632 (2025): 01030. https://doi.org/10.1051/e3sconf/202563201030.

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Bentonite, primarily composed of montmorillonite, is an abundant clay with advantageous physical and chemical properties, such as small particle size, high surface area, significant porosity, and impressive adsorption capacity. These attributes position it as an auspicious material for the elimination of emerging pollutants, particularly caffeine, which poses serious ecological and health risks. This study focuses on the purification of clay from the Nador region in Morocco to assess its efficacy in eliminating caffeine from aqueous solutions. Through a mineralogical analysis via X-ray Diffrac

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Hidayat, T., and Y. F. Arifin. "The Potential of Bentonite and Chitosan Mixtures as Clay Liner Base Material." IOP Conference Series: Earth and Environmental Science 1184, no. 1 (2023): 012011. http://dx.doi.org/10.1088/1755-1315/1184/1/012011.

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Abstract A polymer-enhanced bentonite-sand mixture has been widely used as a clay liner. This research focuses on the potential use of chitosan as a natural polymer mixed with bentonite as a clay liner base material. The bentonite used is a type of calcium bentonite, which is easily obtained in the market. Meanwhile, chitosan is produced from shrimp shell waste and is also easily available in the market. The process of mixing chitosan with a percentage of 2–6% of bentonite was carried out using a certain method, which is described in detail in the article. The materials’ physical, chemical, an

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Tong, Shan, and Kristin M. Sample-Lord. "Coupled solute transport through a polymer-enhanced bentonite." Soils and Foundations 62, no. 6 (2022): 101235. http://dx.doi.org/10.1016/j.sandf.2022.101235.

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Ling, Wanting, Qing Shen, Yanzheng Gao, Xiaohong Gu, and Zhipeng Yang. "Use of bentonite to control the release of copper from contaminated soils." Soil Research 45, no. 8 (2007): 618. http://dx.doi.org/10.1071/sr07079.

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A decrease in release and availability of heavy metals in soil has been of worldwide interest in recent years. Bentonite is a type of expandable montmorillonite clay, and has strong sorption for heavy metals. In this work, the control of amended bentonite on the release of copper (Cu2+) from spiked soils was investigated using a batch equilibrium technique. Sorption of Cu by bentonite was pH-dependent, and could be well described using the Langmiur model. Maximum sorption capacity of the bentonite used in this study was 5.4 mg/g, which was much greater than soils reported in the literature. Th

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Xu, Sifa, Yajun Fu, Jun Wang, et al. "Effect of Zeolite Content on Permeability of Stone Chip-Bentonite-Zeolite Mixture Using a Single Solution." Applied Sciences 12, no. 22 (2022): 11732. http://dx.doi.org/10.3390/app122211732.

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Bentonite is frequently utilized as a landfill lining material due to its high impermeability. Due to the fact that heavy metal ions in leachate can alter the permeability of bentonite liner, the impermeability and metal adsorption effect of bentonite liner is typically enhanced by the use of external admixtures. In this investigation, zeolite was combined with stone chips and bentonite. Using a flexible wall permeation test, zeta potential test, and X-ray diffraction test, the effect of zeolite on the permeability and adsorption properties of the mixture was investigated. The results indicate

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Conners, Brett, Md Mehadi Hassan, Jinguang Hu, Xia Li, and Qingye Lu. "Electrospun Solid-State Electrolyte from Cellulose Acetate and Bentonite Clay for Sodium-Ion Batteries." ECS Meeting Abstracts MA2025-01, no. 62 (2025): 2941. https://doi.org/10.1149/ma2025-01622941mtgabs.

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As the electronics industry rapidly advances, the demand for cost-effective and sustainable power solutions continues to grow, particularly in wearable technology and compact electronics. These fields require power sources that are not only flexible and safe but also abundant. The emergence of solid-state batteries has brought a range of benefits to the field of battery technology, including enhanced safety, and a broad operating temperature range. In the context of wearable technology, batteries must adapt to the bending and rotation of devices while ensuring user safety. Solid-state batterie

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Stepova, K., L. Sysa, A. Kontsur, and O. Myakush. "Adsorption of Copper Ions by Microwave Treated Bentonite." Physics and Chemistry of Solid State 21, no. 3 (2020): 537–44. http://dx.doi.org/10.15330/pcss.21.3.537-544.

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Changes of bentonite surface structure under the influence of direct microwave irradiation during adsorpion of Cu2+ from concentrated solutions were investigated by X-ray and EDS analysis. The microwave treated bentonite (MTB) has been proved to have enhanced adsorption capacity for copper due to improved pore structure and some peculiarities of adsorption mechanism. The non-linear fitting of experimental data to the theoretical isotherms have demonstrated that the adsorption on natural bentonite fitted the Toth model, whilst microwave-treated bentonite fitted the Langmur-Freundlich model. The

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Lukić, Igor, Ivana Horvat, Sanja Radeka, and Urska Vrhovsek. "Solid-Phase Extraction Followed by Gas Chromatography–Mass Spectrometry for Revealing the Effects of the Application of Bentonite, Tannins, and Their Combination during Fermentation in the Production of White Wine." Chemosensors 11, no. 10 (2023): 545. http://dx.doi.org/10.3390/chemosensors11100545.

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To investigate the effects of the application of bentonite, tannins, and their combination in alcoholic fermentation, Malvazija istarska (Vitis vinifera L.) white grape must was treated with 95 g/L of bentonite, 25 g/L of a hydrolysable tannin preparation, while the third treatment received the aforementioned doses of both agents. Control grape must was fermented without bentonite and exogenous tannins. All of the produced wines were additionally fined after fermentation with doses of bentonite needed to achieve complete protein stability. Wines were analyzed both after fermentation and after

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Wang, Guang Hua, Kun Chen, Wen Bing Li, Dong Wan, Qin Hu, and Lu Lu Lu. "Synthesis of Magnetic Modified Organobentonite as Adsorbent for Degradation of Orange II." Advanced Materials Research 838-841 (November 2013): 2306–9. http://dx.doi.org/10.4028/www.scientific.net/amr.838-841.2306.

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Magnetic modified organobentonite (Fe3O4/CTAB–Bent) was synthesized by chemical co-precipitation method in which CTAB–Bent was firstly achieved via ion–exchange.The composite materials have been characterized by powder X–ray diffraction (XRD), Fourier transform infrared spectroscopy (FT–IR) and Scanning electron microscopy (SEM) . The results revealed that basal spacing of bentonite was increased through organic modification and the Fe3O4 particles synthesized which covering the surfaces of bentonite .Compared with natural bentonite, the adsorption capacity of Fe3O4/CTAB–Bent for Orange II was

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Rathod, Krishna Sahebrao. "Evaluating Concrete Strength by Replacing Coarse Aggregate with Steel Slag and Cement with Bentonite Powder." International Journal for Research in Applied Science and Engineering Technology 13, no. 5 (2025): 1565–72. https://doi.org/10.22214/ijraset.2025.70452.

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This research investigates the mechanical strength of concrete by partially replacing cement with bentonite powder and coarse aggregate with steel slag. Bentonite is used at replacement levels of 0%, 10%, 20%, and 30%, while steel slag is uniformly incorporated at 60%. To assess the performance, tests such as compressive strength, split tensile strength, and flexural strength are performed. The results demonstrate enhanced strength properties compared to traditional concrete. Prior studies on the use of bentonite and steel slag highlight their promising potential, and this experiment aims to s

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Zhou, Feng-shan, Tian-qi Li, Yun-hua Yan, Can Cao, Lin Zhou, and Yang Liu. "Enhanced Viscosity of Aqueous Palygorskite Suspensions through Physical and Chemical Processing." Advances in Materials Science and Engineering 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/941580.

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Palygorskite has remarkable rheological properties and was used to increase the stability and viscosity of aqueous suspensions. The effects of different physical and chemical processing methods on the apparent viscosity and plastic viscosity of the palygorskite suspensions such as pressing, ultrasound scattering, acidification, and chemical additives have been released. The pressing and ultrasound scattering indicated that the dispersed state of palygorskite could be increased effectively after treatment, and the apparent viscosity of treated-palygorskite samples increased almost 2-3 times com

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Li, Yutong, Hongyan Zhao, Xuanhe Liang, et al. "Impact of a Complex Passivating Agent on Heavy Metal Immobilization in Pig Manure and Plant Development." Environments 11, no. 12 (2024): 290. https://doi.org/10.3390/environments11120290.

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In order to immobilize heavy metals in livestock and poultry manure and promote the safe utilization of pig manure resources, this experiment utilized three types of dried pig manure mixed with soil as raw materials. A combination of biochar and bentonite was established, including treatments with the addition of pig manure (CZ), 2.5% bentonite (F1), 7.5% bentonite (F2), 2.5% biochar (F3), 7.5% biochar (F4), 2.5% biochar + 2.5% bentonite (F5), 2.5% biochar + 7.5% bentonite (F6), 7.5% biochar + 2.5% bentonite (F7), 7.5% biochar + 7.5% bentonite (F8), and with zero addition (CK). After the passi

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Arifin, Yulian Firmana, Rusdiansyah Rusdiansyah, Adriani Adriani, Muhammad Nur Arfiandoyo, and Muhammad Naufal Herfian Rizqullah. "Mixing Time Optimization of Chitosan-Bentonite Composites for Sustainable Clay Liner Applications." Engineering, Technology & Applied Science Research 15, no. 2 (2025): 21106–14. https://doi.org/10.48084/etasr.10062.

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Bentonite-chitosan composites offer promising potential as clay liners due to their low permeability and enhanced mechanical properties. However, the extended mixing times required for optimal composite performance pose challenges for large-scale applications. This study investigates the effects of varying mixing times on the properties of bentonite-chitosan composites to optimize their performance while improving practicality. The composites were prepared by mixing bentonite with chitosan in acetic acid and sodium tripolyphosphate (STPP) solutions for varying durations. Characterization tests

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Assi, Amel Habeeb. "The Effect of Weighting Materials on the Rheological Properties of Iraqi and Commercial Bentonite in Direct Emulsion." Iraqi Geological Journal 54, no. 1F (2021): 110–21. http://dx.doi.org/10.46717/igj.54.1f.10ms-2021-06-30.

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Numerous drilling additives and materials are used continuously because they are necessary to support and give the required properties of the drilling fluid so that to ensure the stability of the borehole. This paper aspires to evaluate the rheological properties of bentonite (montmorillonite) Trefawey as an alternative to using commercial bentonite. Monitoring and evaluating of the rheological and filtration properties were prepared. This exertion aims to focus on the effect of hematite, and barite on the rheological properties of the three aforementioned bentonite types. An improvement in th

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Amlashi, Amir Tavana, Ali Reza Ghanizadeh, and Samer Dessouky. "Enhanced Predictive Ensemble Learning Models for Compressive Strength of Concrete Modified with Bentonite Clay." Innovation Discovery 1, no. 4 (2024): 33. http://dx.doi.org/10.53964/id.2024033.

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This study addresses the logistical challenges of testing bentonite plastic concrete in the field by developing predictive models for compressive strength (CS) using Python-based machine learning techniques. The models, including random forest, adaptive boosting, extreme gradient boosting, and gradient boosting regression tree, were enhanced with forensic-based investigation optimization. A dataset of 285 CS records was used to train and validate these models. SHAP analysis highlighted the impact of various inputs like gravel, bentonite, curing time, and cement on CS. Results show that the GBR

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Li, Shan Ping, and Jiang Jie Cui. "Adsorption of Congo Red Dye onto Raw and Chitosan-Modified Bentonite." Advanced Materials Research 156-157 (October 2010): 217–24. http://dx.doi.org/10.4028/www.scientific.net/amr.156-157.217.

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We studied the effects of surface modification of bentonite with chitosan on its ability to adsorb Congo Red (CR) dye. The adsorption behavior of CR from aqueous solution onto raw (RB) and chitosan-modified (CMB) bentonite samples was investigated as a function of parameters such as initial CR concentration, contact time, pH and temperature. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were used to confirm the surface modification. Compared with RB, the adsorption capacity of CMB for CR was greatly enhanced. Kinetic studies indicated that the adsorption

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Adjei, Stephen, Salaheldin Elkatatny, and Abdulaziz Al-Majed. "Effect of Bentonite Prehydration Time on the Stability of Lightweight Oil-Well Cement System." Geofluids 2021 (June 12, 2021): 1–8. http://dx.doi.org/10.1155/2021/9957159.

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Lightweight cement systems are used in the weak intervals of petroleum wells. Sodium bentonite is used as an extender in lightweight oil-well cement systems as it prevents excess water and sedimentation of particles, thereby ensuring the formation of homogenous and stable cement sheaths. The extending ability of sodium bentonite is enhanced when prehydrated. However, the optimum bentonite prehydration time and its effect on the stability of lightweight cement systems have not been well established. The objective of this study is to investigate the optimum sodium bentonite prehydration time and

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Ma, Xiaohu, Alice Fischerauer, Sebastian Haacke, and Gerhard Fischerauer. "Determination of the Bentonite Content in Molding Sands Using AI-Enhanced Electrical Impedance Spectroscopy." Sensors 24, no. 24 (2024): 8111. https://doi.org/10.3390/s24248111.

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Molding sand mixtures in the foundry industry are typically composed of fresh and reclaimed sands, water, and additives such as bentonite. Optimizing the control of these mixtures and the recycling of used sand after casting requires an efficient in-line monitoring method, which is currently unavailable. This study explores the potential of an AI-enhanced electrical impedance spectroscopy (EIS) system as a solution. To establish a fundamental dataset, we characterized various sand mixtures containing quartz sand, bentonite, and deionized water using EIS in the frequency range from 20 Hz to 1 M

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Jablonovská, Katarína, and Iveta Štyriaková. "Application Possibility of Bentonite and Zeolite in Bioremediation." Advanced Materials Research 20-21 (July 2007): 295–98. http://dx.doi.org/10.4028/www.scientific.net/amr.20-21.295.

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This paper investigates Zn2+ and Cu2+ adsorption capability of bentonite and zeolite taken from the non-raw metallic deposits of Slovakia. Viable biomass of an Bacillus pumilus and Bacillus megaterium enhanced the efficiency of Zn2+ and Cu2+ adsorption from model solution. Initial concentration of Cu and Zn in model solutions initially containing 32.3 mg.Cu.L-1and 42.9 mg Zn.L-1 after six hours sorption and desorption at 25°C, it was observed that 1g bentonite whit bacteria inokulum was found to remove 0.195 mg Zn2+ and 0.17 mg Cu2+ from the solution and 1g zeolite was found to remove 0.088 Zn

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Hosney, Mohamed, and Ronald Kerry Rowe. "Polymer-enhanced bentonite–sand to cover calcium-rich soil." Environmental Geotechnics 6, no. 3 (2019): 155–61. http://dx.doi.org/10.1680/jenge.17.00001.

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Zhong, Cheng, Rui Deng, Meng Gao та ін. "Enhanced bromate adsorption by using ɑ-FeOOH pillared bentonite". DESALINATION AND WATER TREATMENT 213 (2021): 248–58. http://dx.doi.org/10.5004/dwt.2021.26677.

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