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Journal articles on the topic 'Barmer Bentonite - Physico-Chemical Properties'

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Published: 4 June 2021
Last updated: 7 September 2023

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1

Takoo, R. K., and B. R. Patel. "Physico-Chemical Properties of Kutch Bentonite." Crystal Research and Technology 21, no. 1 (1986): 141–44. http://dx.doi.org/10.1002/crat.2170210134.

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2

Torikai, Yuji, Seichi Sato, and Hiroshi Ohashi. "Physico-Chemical Properties of Water in Bentonite." Journal of Nuclear Fuel Cycle and Environment 1, no. 1 (1994): 85–90. http://dx.doi.org/10.3327/jnuce.1.85.

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3

Randjelovic, Marjan, Milovan Purenovic, Aleksandra Zarubica, Igor Mladenovic, Jelena Purenovic, and Milan Momcilovic. "Physico-chemical characterization of bentonite and its application for Mn2+ removal from water." Chemical Industry 65, no. 4 (2011): 381–87. http://dx.doi.org/10.2298/hemind110322029r.

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Bentonite is mainly composed of clay minerals from smectite group, therefore it has a well developed and chemically active surface area and high cation exchange capacity. Moreover, an interlayer space of smectite has unusual hydration properties, which manifest as swelling of bentonite in water. These properties make bentonite as a commonly used raw material in chemistry and industry, and it is very important in environmental protection and water treatment as an effective sorbent of heavy metals. The results of X-ray diffraction, a cationic exchange capacity, specific surface area, acid-base p
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4

Stojiljkovic, S., V. Miljkovic, G. Nikolic, et al. "The influence of the addition of polymers on the physico-chemical properties of bentonite suspensions." Science of Sintering 46, no. 1 (2014): 65–73. http://dx.doi.org/10.2298/sos1401065s.

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Bentonite clays have many applications in industries ranging from construction to cosmetics. Addition of polymers can profoundly influence the properties of bentonite suspensions and we now describe the influence of a range of different polymers. Whereas polyvinyl pyrolidone and soy isolate only slightly influenced the pH and the electrical conductivity of bentonite polymers in suspension, Carbopol solution caused decreases in both pH and electrical conductivity. As expected, strong electrolytes like sodium chloride caused big changes in the electrical conductivity of the suspensions. When the
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В. Х., Межидов,, Дадашев, Р. Х., Гацаев, З. Ш., and Галанина, Н. А. "PHYSICO-CHEMICAL PROCESSES DURING THE SYNERESIS OF BENTONITE HYDROGEL." Вестник ГГНТУ. Технические науки, no. 3(29) (October 24, 2022): 82–89. http://dx.doi.org/10.34708/gstou.2022.72.56.009.

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Структура, состав и свойства бентонита зависят от месторождения. Нами проведены экспериментальные исследования синерезиса с использованием бентонита ЧР. В опытах экспериментально определяли объем синеретической жидкости, которая выделялась при синерезисе, в зависимости от следующих факторов: концентраций бентонита; содержания электролита KCl; продолжительности действия ультразвука. В результате проведенных опытов установлено, что бентонит ЧР относится к группе коллоидов, понижающих синеретическую жидкость. Измельчение частиц бентонита под действием ультразвука приводит к значительному увеличен
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Feriancová, A., A. Dubec, J. Pagáčová, I. Labaj, and M. Pajtášová. "The influence of silane on the physico-mechanical properties of vulcanizates using bentonite fillers." IOP Conference Series: Materials Science and Engineering 1199, no. 1 (2021): 012040. http://dx.doi.org/10.1088/1757-899x/1199/1/012040.

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Abstract Layered phyllosilicate fillers have received attention in the polymer industry due to their unique nanoscale sheet-like structure. Adding a small amount of bentonite nanofiller gives rise to improved mechanical, thermal, and gas barrier properties of rubber mixtures. Depending on the application, natural bentonite is often modified by physical processes or by chemical processes (intercalation, cation exchange process, functionalization, pillaring, etc.). Chemical modification increases the size of the interlayer spaces and provides a hydrophobic environment. Functionalization (e.g., s
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7

Mukherjee, A. K., M. M. Alam, S. K. Mazumdar, R. Haque, and S. Gowrisankaran. "Physico-chemical properties and petrographic characteristics of the Kapurdi lignite deposit, Barmer Basin, Rajasthan, India." International Journal of Coal Geology 21, no. 1-2 (1992): 31–44. http://dx.doi.org/10.1016/0166-5162(92)90034-t.

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8

Buntin, Artem E. "Influence of Nano-Modification on Structural, Mechanical and Physico-Chemical Characteristics of Bentonite." Solid State Phenomena 316 (April 2021): 34–39. http://dx.doi.org/10.4028/www.scientific.net/ssp.316.34.

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The paper studies the influence of nanodispersed aluminum and silicon oxides on the structural, physico-chemical and mechanical characteristics of calcium-magnesium bentonite deposits of the Republic of Tatarstan, in order to determine the optimal concentrations of the nanomodifier, and to improve the performance of respective materials. It was found that nanomodification of bentonite increases the strength of samples after firing by more than 1,5 times, the adsorption index by 20–25 %. The optimal concentration of nanoparticles was determined by changing the properties. The methods of Brunaue
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9

Pajtášová, Mariana, Robert Janík, Darina Ondrušová, Petra Skalková, Andrea Feriancová, and Silvia Ďurišová. "The Influence of Selected Physico-Chemical Factors on Physico-Mechanical Properties of Studied Vulcanizates." MATEC Web of Conferences 357 (2022): 07003. http://dx.doi.org/10.1051/matecconf/202235707003.

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The focus of the presented study was set on the influence of physico-chemical factors on the physico-mechanical properties of the investigated vulcanizates containing carbon black filler substitution by mixing alternative fillers. Relating to the alternative partial substituents of fillers, the fine fractions of bentonite, polylactide, polypropylene and coffee grounds have been chosen. The prepared vulcanizates were exposed to various environment conditions which were based namely on DCSBD, plasma discharge (Diffuse Coplanar Surface Barrier Discharge), organic solvent and fungus extract of Pip
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10

Onalbek, G., B. Askapova, K. Musabekov, and K. Vasin. "INVESTIGATION ON THE PHYSICO - CHEMICAL PROPERTIES OF MAGNETIC CLAY COMPOSITES." Herald of Kazakh-British technical university 18, no. 3 (2021): 22–27. http://dx.doi.org/10.55452/1998-6688-2021-18-3-22-27.

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This article studies the main physical and chemical properties of magnetic clays. Structural changes in magnetic clay composite suspensions were evaluated by measuring the permittivity through direct measurement of the sensor capacitance and through computer measurement of the frequency of the electric signal inversely proportional to the sensor capacitance. Natural bentonite clay of the Tagan field (East Kazakhstan region) was used in this study. Magnetite synthesized by the method of co-precipitation of iron salts with magnetite-clay composites. Different compositions of clay-magnetite compo
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Mirzan, Mohamad, Akhmad Syoufian, and Karna Wijaya. "Physico-Chemical Properties of Nano ZrO2-Pillared Bentonite with Nickel as Supporting Metal." Nano Hybrids and Composites 30 (November 2020): 9–17. http://dx.doi.org/10.4028/www.scientific.net/nhc.30.9.

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Bentonite was modified through intercalation and calcination using a ZrOCl2 pillaring solution. To create nano Ni/ZrO2-bentonite catalyst, ZrO2 pillared bentonite was impregnated using Ni(NO3)2•6H2O precursor first, then followed by calcination and reduction. The physical-chemical properties of the catalyst was characterized by XRD (X-ray Diffractometer), FT-IR (Fourier Transform Infrared), surface acidity with NH3 vapor adsorption method, SAA (Surface Area Analyzer) and TEM (Transmission Electron Microscope). The results of characterization with XRD showed specific peaks for montmorillonite m
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Silva, Ricardo Antonio Ferreira da, Danilo Brito da Costa, William de Paiva, Márcio Camargo de Melo, and Veruschka Escarião Dessoles Monteiro. "Correlations between physico-chemical properties and nickel adsorption parameters in soils used in sanitary landfill liners." Águas Subterrâneas 34, no. 3 (2020): 275–84. http://dx.doi.org/10.14295/ras.v34i3.29914.

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The adsorption of heavy metals by sanitary landfill liners represents a measure of protection of surface and groundwaters against contamination by metals, mitigating risks to public health. Hence, this research aimed to identify, from correlations, the influence of physico-chemical properties of soils applied in landfill liners using nickel adsorption parameters. Batch equilibrium tests with initial nickel concentrations of 45 to 1440 mg.L-1 were performed in clayey sand and bentonite clay soil, as well as in mixtures. Nickel adsorption parameters from Freundlich and Langmuir isotherm models w
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13

Damian, Gheorghe, Floarea Damian, Zsolt Szakács, Gheorghe Iepure, and Dan Aştefanei. "Mineralogical and Physico-Chemical Characterization of the Oraşu-Nou (Romania) Bentonite Resources." Minerals 11, no. 9 (2021): 938. http://dx.doi.org/10.3390/min11090938.

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The objective of this study is to describe the mineralogical composition and chemical properties of the Oraşu Nou bentonite, from northwestern Romania. For mineralogical determinations, the following were used: X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FR-IR), thermogravimetric analysis, scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM-EDX). The chemical compositions and physical properties of the bentonites and bentonitized rocks were also determined. Calcium type montmorillonite is the predominant mineral in this deposit. Its average
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14

Et-Tayea, Yassine, Rachid Cherouaki, Ahmed Rachid, et al. "Physico-Chemical, Mineralogical Properties and Valorization of Bentonite Material from Iboughardain Area (North-Eastern Rif, Morocco): Application in Dyes Removal." Iraqi Geological Journal 56, no. 2A (2023): 71–84. http://dx.doi.org/10.46717/igj.56.2a.6ms-2023-7-15.

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This paper focuses on the characterization and valorization of Moroccan bentonite in dye removal. The stratiform Iboughardain deposit is located in Kert basin (Northeast Rif, Morocco), It is accessible via a tarred road connecting Nador-Seghanghan-Dar Kabdani at a distance of approximately 30 km from Nador. Its Lambert coordinates are X = 709.300, Y = 501.000 (topographic sheet Kebdani to 1/100.000). Bentonite outcrops occur as alterations of the lower horizontal layers of trachyandesite tuff and cinerite. This alteration is in contact with greenish Miocene marl. The mineralogy composition of
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15

Lin, Zongkun, Yuru Yang, Zizhan Liang, Lei Zeng, and Aiping Zhang. "Preparation of Chitosan/Calcium Alginate/Bentonite Composite Hydrogel and Its Heavy Metal Ions Adsorption Properties." Polymers 13, no. 11 (2021): 1891. http://dx.doi.org/10.3390/polym13111891.

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In order to avoid the secondary pollution of the toxic residue of chemical crosslinking agent accompanied by chemical hydrogel adsorbent and enhance the adsorption performance of physical hydrogel, chitosan/calcium alginate/bentonite (CTS/CA/BT) composite physical hydrogel was constructed. The formation mechanism and structure of the composite hydrogel were determined by FTIR, XRD and SEM. Adsorption performances of the hydrogel toward Pb2+, Cu2+ and Cd2+ in water under different condition as well as multi-ion competitive sorption were investigated. The adsorption processes were described with
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16

Marchal, Richard, J. Barret, and Alain Maujean. "Relation between physico-chemical characteristics of a bentonite and its adsorptive capacity." OENO One 29, no. 1 (1995): 27. http://dx.doi.org/10.20870/oeno-one.1995.29.1.1718.

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<p style="text-align: justify;">Bentonites are clays essentially used for musts and wines protein haze prevention. For the « Methode Champenoise », they also serve as a riddling adjuvant to facilitate yeasts elimination. Physico-chemical characteristics of various types of bentonites are studied in parallel to their adsoiption properties. Na/Ca exchangeable ratio is contained between 0.5 and 3.7. Swelling indexes measured in wine or in drinking water (r = 0.96) are not related to the Na/Ca ratio. On the other hand, a good correlation exists between the specifie adsorption surface (measur
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17

Osacký, Marek, Tomáš Binčík, Tomáš Paľo, Peter Uhlík, Jana Madejová, and Adriana Czímerová. "Mineralogical and physico–chemical properties of bentonites from the Jastrabá Formation (Kremnické vrchy Mts., Western Carpathians)." Geologica Carpathica 70, no. 5 (2019): 433–45. http://dx.doi.org/10.2478/geoca-2019-0025.

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Abstract In the past years an increasing demand for bentonites resulted in the opening of new bentonite deposits in the Jastrabá Formation. The shortage of information, in particular analytical data, on the bentonites from the newly opened Jastrabá Fm. deposits was the motivation for the current study. Smectite is the predominant mineral in all bulk bentonites from the new deposits. Its amount varied between 43 and 90 wt. %. The bulk bentonites also contain variable amounts (10–57 wt. %) of mineral admixtures such as feldspars, mica, opal-CT, kaolinite, quartz and sometimes goethite. The smect
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18

Souto, Carlos Magno Rocha Almeida, Danielly Vieira Lucena, Clarice Oliveira Da Rocha, Maria Eduarda Da Silva Barbosa, and Syane Marcelle Miranda. "Desempenho reológico e de filtração de fluidos de perfuração base óleo preparados com argilas bentoníticas provenientes do município de Boa Vista-PB." Revista Principia - Divulgação Científica e Tecnológica do IFPB 1, no. 51 (2020): 22. http://dx.doi.org/10.18265/1517-0306a2020v1n51p22-29.

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<div class="page" title="Page 1"><div class="layoutArea"><div class="column"><p>Bentonite clays are an essential input to the production of drilling fluids. One of the main consumer segments of bentonite clay is the oil industry, where it is used as a thixotropic agent in drilling fluids in oil wells, attributing to the fluids physical characteristics and specific chemical and rheological properties. According to Leal (2012), the physico-chemical and rheological properties must be carefully controlled so that the fluid can perform all its functions, such as cooling the
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19

Montaev, S. A., N. B. Adilova, B. A. Omarov, R. A. Ristavletov, and B. T. Shakeshev. "STUDY OF CLAY RAW MATERIALS OF TURKESTAN REGION FOR THE PRODUCTION OF CERAMIC PAVING STONES." Bulletin of Kazakh Leading Academy of Architecture and Construction 83, no. 1 (2022): 170–80. http://dx.doi.org/10.51488/1680-080x/2022.1-13.

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This article studies the properties of clay materials of the Turkestan region for the production of ceramic paving stones. The analysis of the obtained physico-mechanical and chemical-mineralogical results and dilatometric studies made it possible to develop compositions of ceramic masses that are most acceptable for obtaining samples of paving stones with improved properties. On the basis of raw materials compositions in the loam-bentonite system of the Ordabasinsky deposit, samples molded by vibropressing were obtained, the physical and mechanical parameters of which have positive dynamics a
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Mesboua, Noureddine, Khaled Benyounes, Abdelbaki Benmounah, and Sanjay Kumar Shukla. "Study of the impact of bentonite on the physico-mechanical and flow properties of cement grout." Cogent Engineering 5, no. 1 (2018): 1446252. http://dx.doi.org/10.1080/23311916.2018.1446252.

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Mesboua, N., K. Benyounes, S. Kennouche, Y. Ammar, A. Benmounah, and H. Kemer. "Calcinated Bentonite as Supplementary Cementitious Materials in Cement-Based Mortar." Journal of Applied Engineering Sciences 11, no. 1 (2021): 23–32. http://dx.doi.org/10.2478/jaes-2021-0004.

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Abstract The construction industry consumes a large quantity of cement, which therefore leads to a high CO2 emission due to the cement manufacture. The partial replacement of cement by supplementary cementations materials (SCMs) is considered as the most promising alternative to reduce the environmental impact of this industry. This investigation aims to evaluate the performance of calcinated clay (calcined bentonite at 850 °C) used as partial replacement of cement in cement-based mortar. The evaluated performances include the physico-chemical and mechanical properties, as well as microstructu
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Ahmadi, Amir, Rauf Foroutan, Hossein Esmaeili, and Sajad Tamjidi. "The role of bentonite clay and bentonite clay@MnFe2O4 composite and their physico-chemical properties on the removal of Cr(III) and Cr(VI) from aqueous media." Environmental Science and Pollution Research 27, no. 12 (2020): 14044–57. http://dx.doi.org/10.1007/s11356-020-07756-x.

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Sanz-Martínez, Andrés, Javier Lasobras, Jaime Soler, Javier Herguido, and Miguel Menéndez. "Methanol to Gasoline (MTG): Preparation, Characterization and Testing of HZSM-5 Zeolite-Based Catalysts to Be Used in a Fluidized Bed Reactor." Catalysts 12, no. 2 (2022): 134. http://dx.doi.org/10.3390/catal12020134.

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The preparation of catalysts suitable for MTG processes in a fluidized bed reactor has been studied with emphasis on improving the textural, physico-chemical, morphological, structural and mechanical properties. A mixture of HZSM-5 zeolite (active material), boehmite or bentonite (binder) and alumina (inert filler) was used to prepare different catalysts. After preparation, characterization by physical adsorption of N2, XRF, XRD and SEM-EDX techniques was carried out. The screening of catalysts was performed in a fluidized bed reactor. The distribution of products was very similar in all cases
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Fernández, Ana María, José F. Marco, Paula Nieto, et al. "Characterization of Bentonites from the In Situ ABM5 Heater Experiment at Äspö Hard Rock Laboratory, Sweden." Minerals 12, no. 4 (2022): 471. http://dx.doi.org/10.3390/min12040471.

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The Alternative Buffer Material ABM5 experiment is an in situ medium-scale experiment performed at Äspö Hard Rock Laboratory (HRL) conducted by SKB in Sweden with the aim of analysing the long-term stability of bentonites used as an engineering barrier for a high-level radioactive waste repository (HLWR). In this work, four different ring-shaped Ca- and Na-bentonite blocks, which were piled around a carbon steel cylindrical heater, subjected to a maximum temperature of 250 °C and hydrated with saline Na-Ca-Cl Äspö groundwater (0.91 ionic strength), were characterized after dismantling. This wo
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Ibrahim, AO, OR Momoh, and MT Isa. "ENHANCEMENT OF GAMBE CLAY USING UN-FERMENTABLE POLYMERS FOR DRILLING MUD FORMULATION." Nigerian Journal of Technology 36, no. 1 (2016): 119–26. http://dx.doi.org/10.4314/njt.v36i1.15.

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There is availability and large deposits of bentonite (700 million tons in North Eastern part) in Nigeria but the clays had not been abundantly harnessed and enhanced with polymer for drilling fluid formulation because they are mostly composed of calcium montmorillonite. This work was aimed at enhancing Gambe clay using un-fermentable polymers (three carboxy methyl cellulose (CMC) with different average molecular weight). The clay was obtained from Gambe town in Adamawa State, Nigeria, beneficiated for quartz removal, as well as enhancement with Na2CO3 (6 wt.%). The mineral and oxides composit
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SATO, Haruo. "A Thermodynamic Analysis on the Effect of Salinity on Interlayer Space of Na-Montmorillonite." MRS Advances 1, no. 61 (2016): 4027–33. http://dx.doi.org/10.1557/adv.2017.185.

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ABSTRACTBentonite is used as one of the materials for engineered barrier systems in a radioactive waste repository. Since the major clay mineral constituent of bentonite is montmorillonite, its physico-chemical properties are important. Basal spacing of water-saturated Na-montmorillonite is reported to decrease with increasing Na-montmorillonite density. This paper presents a thermodynamic model to calculate change in the interlayer space of Na-montmorillonite based on the relative partial molar Gibbs free energy (dG) of interlayer water as contacted with a solution of an arbitrary salinity (N
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HALYSH, Vita, Iaroslav RADOVENCHYK, Mykola GOMELYA, and Vyacheslav RADOVENCHYK. "STUDY OF THE PROCESSES OF WASTEWATER TREATMENT FOR REUSE IN THE PULP AND PAPER INDUSTRY." Herald of Khmelnytskyi National University. Technical sciences 313, no. 5 (2022): 128–33. http://dx.doi.org/10.31891/2307-5732-2022-313-5-128-133.

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Nowadays, more than 80% of cardboard and paper products of Ukrainian mills are made from waste paper – secondary fibers that differ in their chemical and physical properties from primary cellulosic fibers. Characteristic feature of secondary fibers is the presence of a large number of small fibers, which negatively affects the quality of finished products, mass retention on the grid during the formation of paper or cardboard, which leads to pollution of wastewaters. Despite its environmental friendliness and economy, waste paper is also characterized by the presence of various pollutants, the
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Guagliano, Marianna, Matteo Dell’Anno, Giovanni Dotelli, et al. "Lysozyme–Mineral Clay Systems: Comparison of Interaction for Controlled Release in Feed Application." Minerals 13, no. 5 (2023): 660. http://dx.doi.org/10.3390/min13050660.

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A synthetic approach to bond lysozyme (LY) to commercial natural carriers, namely clay minerals (bentonite, BN; and sepiolite, SP) and commercial zeolite (Phil 75®, PH), already in use in feed formulation, is proposed. The synthetic route, which implies solid–liquid adsorption, is a simple and effective way for preparing hybrid materials characterized by LY loadings up to 37 mgLY/gcarrier. By operating at pH 4.3, initial LY content of 37.5 mgLY/gcarrier, and reaction time of 90 min, hybrid materials with LY loadings of 37, 35, and 12 mgLY/gcarrier for LY-SP, LY-BN, and LY-PH, respectively were
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Chetverikova, Anna G., Olga N. Kanygina, Gulzhazira Zh Alpysbaeva, Alexander A. Yudin та Saniya S. Sokabayeva. "ИНФРАКРАСНАЯ СПЕКТРОСКОПИЯ КАК МЕТОД ОПРЕДЕЛЕНИЯ СТРУКТУРНЫХ ОТКЛИКОВ ПРИРОДНЫХ ГЛИН НА СВЧ-ВОЗДЕЙСТВИЕ". Kondensirovannye sredy i mezhfaznye granitsy = Condensed Matter and Interphases 21, № 3 (2019): 446–54. http://dx.doi.org/10.17308/kcmf.2019.21/1155.

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Методом ИК-спектроскопии изучены структурные отклики частиц монтмориллонитовой и каолинитовой глин месторождений Оренбургской области на СВЧ-воздействие. Обработку проб в течение 10 минут проводили в поле магнетрона мощностью 750 Вт в воздушной и влажной средах. Спектры получены с помощью ИК-Фурье спектрометра в диапазоне длин волн 4000–400 cм-1. Установлено, что в монтмориллонитовой глине количество доминирующих связей в тетраэдре SiO4 снижается в 1.5 раза при обработке в сухом воздухе и в 1.8 раза – во влажном. В глине, содержащей каолинит, все типы связей активно разрушаются под воздействие
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DEMİR, Didem, Zeynep GÜN, and Emin YILMAZ. "Effect of Natural Clays on Color and Physico-Chemical Properties of Model Oil." Akademik Gıda, July 27, 2022, 161–69. http://dx.doi.org/10.24323/akademik-gida.1149862.

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The objective of this study was to compare the color removal capacities of 9 natural clays and 2 commercial bleaching earths (C.B.E.) for beta carotene and chlorophyll pigments added model oil. Halloysite, zeolite, bentonite, sepiolite, diatom earth, Magnesol XL, kaolin, montmorillonite and perlite were added at 0.5% weight ratio into model oil and mixed for 30 min at 80°C, before filtering and analyzing for instrumental color, oil loss, free fatty acidity, acid number and peroxide values. The total color difference (E) for beta carotene were highest with 2.3, 2.1, and 1.8 for C.B.E.-1, C.B.E
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"INFLUENCE OF A HYDROPHOBIZER ON THE PROPERTIES OF EXPERIMENTAL BENTONITE-CONTAINING BIPOLAR MEMBRANES." ChemChemTech 65, no. 10 (2022): 120–27. http://dx.doi.org/10.6060/ivkkt.20226510.6686.

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Experimental samples of bipolar ion-exchange membranes were obtained by applying liquid sulfocation exchanger LF-4SK containing bentonite clays treated with stearic acid to an anion-exchange membrane-substrate with quaternary ammonium groups MA-41. The effect of the amount of added bentonite (1, 2, 3 wt%) on the characteristics of membranes was studied. Silicon and hydroxyl of the included bentonite accelerate the dissociation of water molecules, which leads to increasing the concentration of hydrogen and hydroxyl ions during bipolar electrodialysis. Surface modification of bentonite particles
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Ismailov, Bakhtiyar, and Sharibay Turemuratov. "PHYSICO-CHEMICAL AND MINERALOGICAL PROPERTIES OF THE NUKUS SAND AND BENTONITE CLAYS OF THE BESHTYUBINSKY DEPOSIT." Universum:Chemistry & biology 96, no. 6-2 (2022). http://dx.doi.org/10.32743/unichem.2022.96.6.13784.

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33

AKHTAR, Muhammad Shahbaz. "Bentonite and polymeric support fluids used for stabilization in excavations." Turkish Journal of Engineering, September 14, 2022. http://dx.doi.org/10.31127/tuje.1118896.

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Bentonite is a natural and finite mineral resource. Dilute suspensions of sodium montmorillonite clay in water represents bentonite slurries. Suspension and orientation of colloidal clay particles define rheological properties in bentonite slurry (BS). The BS has been used about seventy years to temporarily support the excavations. More recently, polymer support fluids (PSF) gained much popularity and are widely used compared to bentonite support fluids. The PSF are categorized into natural (pure) and synthetic polymers. Physico-chemical properties of PSF are different than BS irrespective of
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34

Zukhriddin, Vokkosov, Kanoatov Khairullo Murodillaevich, and Sultonov Boxodir Elbekovich. "Obtaing Organomineral Fertilizers on Base of Local Raw Materials and Nitrogen-fixing Microorganisms." Chemical Science International Journal, December 23, 2022, 44–53. http://dx.doi.org/10.9734/csji/2022/v31i4818.

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The article presents results of research on the production of organomineral fertilizers based on local raw materials cattle manure (CM), Kyzylkum phosphorite flour (FF) and Navbahor bentonite (NB) and nitrogen-fixing microorganisms (NFM). CM: NB: NFM=100.0: 2.5: (0-4) and CM: NB: FF: NFM= 100.0: 5.0: 2.5: (0-4) in obtaining new types of organomineral fertilizers ratios are used. Composting time is taken from 1 day to 60 days. The physico-chemical and commercial properties of the obtained new type of organomineral fertilizers were studied. The contents of organomineral fertilizer samples were a
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Iranfar, Soha, Mohammad Mehdi Karbala, Mahmood Shakiba, and Mohammad Hossein Shahsavari. "Effects of type and distribution of clay minerals on the physico-chemical and geomechanical properties of engineered porous rocks." Scientific Reports 13, no. 1 (2023). http://dx.doi.org/10.1038/s41598-023-33103-4.

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AbstractThe study of the properties of engineered rocks is of great importance to researchers in engineering sciences such as petroleum, mining, and civil engineering owing to their wide application in these fields. In the present study, a physico-chemical and geomechanical investigation was carried out on the effects of different clay minerals on porous rocks. Various chemical products formed during chemical interactions between cement, clay minerals, and water can change the pore structure and thus the rock characteristics. The results of the current study showed that increasing the clay con
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