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Bentonite has major applications in the fields like foundry bonds, absorbents, adhesives, ceramics [17]. It can be used as a drilling mud, bleaching earth, water and solvent based rheological ...
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A new method of Na-activation of raw bentonite, rich in Ca-montmorillonite, consisting of combined thermal treatment at 200 °C, followed by immediate impregnation with aqueous solution of Na 2 CO 3 of concentration corresponding to 0.5, 1.0, 1.5, or 2.0 cation exchange capacity (CEC) of clay, was investigated. Structural and compositional …
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Herein, the facile one step acid activation of bentonite derived functionalized adsorbent (AB) for the effective remediation of both ionic and non-ionic secondary pesticides, ametryn and ...
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1.. IntroductionBentonite often contains > 80% montmorillonite.Bentonite is used in a wide range of applications including drilling mud, bleaching earth, water and solvent based rheological additives, litter, desiccant clay, and animal feed additive (Lagaly, 2006).Due to high viscosity and swelling and low filtration loss, (Na–Ca) …
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The sodium salt-assisted low temperature activation of bentonite (BB) was attempted. The unique features of the raw bentonite and BB were characterized with …
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However, most inorganic acids are harmful to equipment and human health, whereas organic acids are comparatively safe but are less efficient in activating bentonite because of their lower strength. Hence, using inorganic acid of moderate strength is the most effective mode of surface activation (Khan 2015). However, the acid activation process ...
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Activation of bentonite by ultrasonic method. Ultrasonic waves are a type of high-frequency sound waves that travel through a medium at a speed and with a …
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The wide availability of bentonite, simple modification method, and most likely low operating costs show that modified bentonite is a very suitable sorbent in water treatment for the removal of ciprofloxacin. ... Toor M, Jin B, Dai S, Vimonses V (2015) Activating natural bentonite as a cost-effective adsorbent for removal of Congo-red in ...
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Materials and Method Study area and collection of samples: Raw bentonite were collected from the area of Ain Al-Baida Basin of ... ling is the best condition to activate bentonite, more than the coarse milling for size effective particles because the surface area is bigger. Egyptian Commercial bentonite is the basis for comparison with Ain Al ...
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A bentonite from Kirkouk city region (Iraq) was activated with H 2 SO 4 at various ratios (5, 10, 15, 20 %). Due to ion exchange, the original (Ca, Mg, Na, K)-bentonite was converted to H ...
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Acid activation was carried out by heating muds prepared from Ca-rich bentonite (CaB), sulfuric acid (H 2 SO 4) and distilled water, yielding various bleaching earths (BEs).The roles of each of the process …
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In this paper research aimed at activating Jaroszów bentonite were presented. 2. MATERIALS AND METHODS The studies on activating clay minerals were carried out using the exchange of Ca2+, K+, Mg2+ ions to Na+ ions. For activation process the NaOH and NaCl solutions of concentrations 0,1M and 2,0M respectively were applied.
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Bentonite has always had a multitude of markets and acid-activated bentonite was a traditional product for many decades. It is usually a Ca 2+ -bentonite that was treated with inorganic acids to replace divalent calcium ions with monovalent hydrogen ions and to leach out ferric, ferrous, aluminium and magnesium ions thus altering the …
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Thus, sodium carbonate was found to be inadequate for activating Iraqi bentonite, and the use of additive materials was recommended to enhance the rheology of bentonite [12]. Another method involved adding sodium hydroxide to sodium carbonate to activate bentonite, but this method was suggested to be used on-site due to the …
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Similarly, bentonite activation is a complex phenomenon that involves the substitution of exchangeable cations, Al 3+, ... Materials and methods. Modified bentonite. Bentonite, supplied by Sigma ...
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Download scientific diagram | Effects of temperature on chitosan loading from publication: Effects of Bentonite Activation Methods on Chitosan Loading Capacity | The adsorption capacity of ...
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Made available by U.S. Department of Energy Office of Scientific and Technical Information ...
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The intercalation of sodium salt into the bentonite surface give rise to the specific surface area and total pore volume from 120.34 to 426.91, m2/g and 0.155 to 0.225 cm3/g, respectively ...
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Biodiesel obtained by transesterification of vegetable oils and fats is an alternative for petro-diesel fuel. Purification of biodiesel is one of the crucial steps in the production of biodiesel. The conventional wet washing of biodiesel involves huge quantities of water, energy, and time. Therefore, dry washing was carried out with raw bentonite …
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DOI: 10.9767/BCREC.13.1.1040.14-23 Corpus ID: 55067970; Effects of Bentonite Activation Methods on Chitosan Loading Capacity @article{Yu2018EffectsOB, title={Effects of Bentonite Activation Methods on Chitosan Loading Capacity}, author={Tao Yu and Chengtun Qu and Daidi Fan and Ren-kou Xu}, journal={Bulletin of Chemical Reaction …
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Method of activating bentonite Download PDF Info Publication number SU1409404A1. SU1409404A1 SU864161849A SU4161849A SU1409404A1 SU 1409404 A1 SU1409404 A1 SU 1409404A1 SU 864161849 A SU864161849 A SU 864161849A SU 4161849 A SU4161849 A SU 4161849A SU 1409404 A1 SU1409404 A1 SU 1409404A1 Authority …
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Request PDF | Activating natural bentonite as a cost-effective adsorbent for removal of Congo-red in wastewater | The bentonite is a widely available and abundant natural mineral, and can be a low ...
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Thermal activation of bentonite - bleaching earth production. A dry and green process (without using any acids as the activating agents) was employed for the production of bleaching earth, which is the thermal-activation of bentonite. Mixtures of GS and SS bentonite were prepared at a certain proportion; that is 1:4, 2:3, 3:2, and 4:1 …
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DOI: 10.1016/J.JIEC.2014.03.033 Corpus ID: 97263833; Activating natural bentonite as a cost-effective adsorbent for removal of Congo-red in wastewater @article{Toor2015ActivatingNB, title={Activating natural bentonite as a cost-effective adsorbent for removal of Congo-red in wastewater}, author={Manjot Toor and Bo Jin and …
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The effect of bentonite on body function Detoxification. Bentonite clay has been shown to act as a detoxifying agent. This property is referred to its poly-cationic nature, which leads to absorption of negative charge toxins ().T-2 is a trichothecene mycotoxin which is a naturally occurring mold byproduct of Fusarium fungus and is toxic …
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The bentonite activated by 0.1 ... min followed by thermal activation at 100 °C can significantly enhance the surface and adsorption properties of raw bentonite. …
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1. Introduction. One application of calcium bentonite with a significant market is the decolourization of vegetable, animal and mineral oils. Most of the calcium bentonite used for filtering and decolourizing oils is acid activated (Odom, 1984).Acid treatment with sulphuric or hydrochloric acid removes the calcium cations from the surfaces and edges …
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The sodium removal percentage for bentonite activated for 3 h increases with activation temperature. For bentonite activated for 6 and 12 h, the trend in …
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2. Materials and Methods 2.1. Purification of Bentonite. The natural Jordanian bentonite used in this study was collected from the airport region (Al Azraq). The sample was crushed to particle size > 250 μm using a ball mill instrument (clay fractions were obtained by wet sedimentation). The sample was purified in a laboratory, in order to ...
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Abstract—A study is performed of the effect the means of activation of bentonite-like clays (acidic, alkaline, combined) have on the adsorption characteristics of Fe 3+ ions under static conditions. The mechanism of the acidic and alkaline activation of montmorillonite is identified and found to depend on the concentration of the activating ...
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