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2021/07/20Acid Activation Technology For Bentonite
One step acid activation of bentonite derived adsorbent for the ...
2020/11/19 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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Optimization of bleaching power by sulfuric acid activation of
Characterization of activated bentonite clay mineral and the
2020/6/10 After the acid activation, the analysis data showed a significant change in the chemical composition in modified bentonite clay, compared to the raw bentonite clay. The acid activation of bentonite caused an increase in the amount of Si +4 and Ti +4; this increase could be attributed to the remobilization of cations in the octahedral or ...
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Acid Activation - an overview ScienceDirect Topics
Handbook of Clay Science. P. Komadel, J. Madejová, in Developments in Clay Science, 2013 Abstract. Acid activation is a common chemical modification of clays, usually bentonites, with a hot solution of a mineral acid (typically HCl or H 2 SO 4), and it is used for both scientific and industrial purposes.The aim is to obtain partly dissolved material of
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Frontiers Potential of Acid-Activated Bentonite and
2018/12/16 Compared with natural bentonite, acid-activated bentonite displayed about 38–51% larger surface area (Table 1). It can be deduced from the BET data tabulated in Table 1, that the activation of
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(PDF) Acid activation of bentonite clay for recycled automotive
2020/8/18 A natural clay was purified (P-C) and modified by three methods: thermal activation at 200°C for 2 h, acid activation with a 3N sulfuric acid solution for 1 h, and saline activation with ...
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Synergistic modification of bentonite by acid activation and
2020/4/1 In this paper, we proposed a facile modification strategy to enhance adsorption performance of bentonite utilizing synergistic acid activation and hydroxyl iron pillaring, by which the adsorbent (abbreviated as S-Fe-BT) exhibited the highest adsorption capacity (246.06 mg/g) and a high rapid adsorption rate for a typical organic dye,
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Characterization of activated bentonite clay mineral and the
2020/6/10 After the acid activation, the analysis data showed a significant change in the chemical composition in modified bentonite clay, compared to the raw bentonite clay. The acid activation of bentonite caused an increase in the amount of Si +4 and Ti +4; this increase could be attributed to the remobilization of cations in the octahedral or ...
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Preparation and characterization of acid-activated bentonite
2007/3/1 The 40% by mass shows the optimum acid content in the dry bentonite–sulphuric acid mixture by the activation. The radius derivative of the V–r curve for the sample with the maximum mesopore volume of 0.232 cm 3 g − 1 is given in Fig. 8. This shows that there are mesopores with the radii between 1.5 to 20 nm in bentonite
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Preparation and characterization of acid-activated bentonite
2007/3/1 Water purification technologies and modern environmental protection technologies may successfully use the obtained clay-based sorbents. ... The acid activation of bentonite from Middle Anatolia ...
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Obtaining adsorbents from acid and acid-thermal activation of bentonite
2020/7/16 One of the most common chemical modifications of clay minerals, used for both industrial and scientific purposes, is their acid activation. This consists of the reaction of clay minerals with a mineral acid solution, usually HCl or H 2 SO 4.The main task is to obtain partly dissolved material of increased specific surface area, porosity and surface
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Influence of acid activation on the NH3-adsorption properties of
2021/11/24 In this study, the adsorption of NH 3 gas on a bentonite from Ünye (Turkey) in its natural state and after acid treatments, was investigated experimentally at 298 K and up to 100 kPa. Bentonite was treated with HCl solutions of various concentrations (0.5–2.5 M) at 75°C for 4 h.
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Characterization of Acid Activation of Bentonite Clay of
2023/4/6 2.2 Activation of bentonite clay Activation was done based study of Samira Moussa, 2014; 400 mL of hydrochloric acid (2M HCl) (98%, d = 1.98 g/cm3) solution was added to 50 g of NB sample. The ...
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Rheological Properties of Acid-Activated Bentonite Dispersions
2024/1/1 Rheological Properties of Acid-Activated Bentonite Dispersions - Volume 58 Issue 3. ... Wuxi 214122, China Jiangsu Provincial Key Laboratory of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, Jiangsu Province, China. Zhu Long* ... 1950 Acid activation of some bentonite clays Journal of Physics
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Sulphuric Acid Activation of a Calcium Bentonite - ResearchGate
2004/1/1 Activation of Bentonite clay using hydrochloric acid (HCl) [15,16], sulfuric acid (H 2 SO 4 ) [17, 18] and other acids [19,20] has been reported. Out of all acids, H 2 SO 4 is preferred mostly as ...
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Preparation and Characterization of Acid-Activated Bentonite
2021/7/28 The characteristics of acid-activated raw bentonite (RB) activated with binary acid solutions sulfuric acid + nitric acid, nitric acid + phosphoric acid, and phosphoric acid + sulfuric acid, at a concentration of 5 mol/L (denoted as 5-SN, 5-NP, and 5-PS), were evaluated. Moreover, its application for improving the electrical conductivity
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Characterization of Acid Activation of Bentonite Clay of
2023/4/6 2.2 Activation of bentonite clay Activation was done based study of Samira Moussa, 2014; 400 mL of hydrochloric acid (2M HCl) (98%, d = 1.98 g/cm3) solution was added to 50 g of NB sample. The ...
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Rheological Properties of Acid-Activated Bentonite Dispersions
2024/1/1 Rheological Properties of Acid-Activated Bentonite Dispersions - Volume 58 Issue 3. ... Wuxi 214122, China Jiangsu Provincial Key Laboratory of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, Jiangsu Province, China. Zhu Long* ... 1950 Acid activation of some bentonite clays Journal of Physics
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Sulphuric Acid Activation of a Calcium Bentonite
2004/1/1 Acid activation produces partially dissolved bentonite, which exhibits better adsorption properties due to increased clay porosity, surface areas, and the number of active sites (Komadel 2016 ...
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Preparation and Characterization of Acid-Activated Bentonite
2021/7/28 The characteristics of acid-activated raw bentonite (RB) activated with binary acid solutions sulfuric acid + nitric acid, nitric acid + phosphoric acid, and phosphoric acid + sulfuric acid, at a concentration of 5 mol/L (denoted as 5-SN, 5-NP, and 5-PS), were evaluated. Moreover, its application for improving the electrical conductivity
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Activated bentonite clay–based dry-wash purification of
2022/8/12 The acid values for BD-1 increased with the increase in concentration of acid for activation of bentonite clay and dosage of adsorbent used for dry washing. The acid values of biodiesel purified with raw bentonite, calcined bentonite, and Magnesol were in the limit of ASTM standards. ... Sulaiman NMN (2011) Refining technologies for
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Thermal activation, characterization and performance evaluation
2023/2/2 In our earlier work, the performance of acid-treated bentonite for the removal of sodium from water was reported (Musie Gonfa 2022). Chemical activation methods using acid or alkali may leave chemical residue and cause environmental problems (Barakan Aghazadeh 2021).
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Activating natural bentonite as a cost-effective ... - ScienceDirect
2015/1/25 Acid activation. The acid activation was carried out in a 250 mL breaker with 100 mL working volume. The samples were mixed properly in a rotary shaker (Ratek OM 15 orbital) at 100 rpm for 10 min. The raw bentonite was treated with HCl at a determined concentration of 0.05–0.5 M at 60–100 °C. The acid to clay ratio was 1:10
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A systematic and comprehensive study of Eco-friendly bentonite
2023/12/1 Vijayakumar et al. (2009) evaluated acid-activated bentonite as a catalyst in the esterification reaction of the different carboxylic acid with alcohols or p-cresol. Acid activation of bentonite was carried out in concentrated H 2 SO 4 and characterized by FTIR, XRD, SEM, TGA, acid titration and BET surface area. Esterification was carried
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Sulphuric Acid Activation of a Calcium Bentonite - Taylor
2010/6/4 The particle size distributions of the original and acid-activated samples showed that the acid activation strongly affected the particle sizes of the particles. While 97.8% of the original bentonite sample is less than 10 µm in size, 97.8% of the activated samples with 0.5 M acid and 92% of the activated sample with 4 M acid are less than 28. ...
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Acid Treatment on Bentonite Catalysts for Alkylation of ... - Springer
2024/5/11 Dialkylated diphenylamine, renowned for its exceptional thermal stability and antioxidant activity, are extensively used as antioxidants. Raw bentonite after acid-treatment was carried out and the catalytic performance of various solid acid catalysts was tested, and acid-treated clay exhibited the best. In addition, the relationship between
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Acid activated clays: Materials in continuous demand
2016/10/1 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
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Characterization, Acid Activation and Bleaching Performance of ...
2006/4/1 Chinese J. Chem. Eng., 14(2) 25358 (2006) Characterization, Acid Activation and Bleaching Performance of Bentonite from Xinjiang* WU Zhansheng(^ t)a, LI Chun(^#) a'c'**, SUN Xifang(^*^)a, XU DAI Bin(ft $)a, LI Jin'e(*$)a and ZHAO Hongsheng *i * b 1 School of Chemistry and Chemical Engineering, Shihezi University, Shihezi
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Modification of bentonite by combination of reactions of acid ...
2014/9/1 The FTIR spectra of the exchanged acid-activated bentonite (E–A-Bent) and the exchanged bentonite (E-Bent) are shown in Fig. 1, and compared with the natural bentonite (Bent). The E–A-Bent and E-Bent exhibit a new absorption peak at 1460 cm − 1 due to the C C asymmetric bending of the alkyl chains of TBHP present in the clay.
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[PDF] Synergistic modification of bentonite by acid activation
2020/4/1 A facile modification strategy to enhance adsorption performance of bentonite utilizing synergistic acid activation and hydroxyl iron pillaring is proposed, by which the adsorbent exhibited the highest adsorptive capacity (246.06 mg/g) and a high rapid adsor adaptation rate for a typical organic dye, Rhodamine B (RhB). Despite the
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حول لدينا
تأسست شركة Henan Lrate للعلوم والتكنولوجيا المحدودة التي تصنع معدات التكسير والطحن الكبيرة والمتوسطة الحجم في عام 1987. وهي شركة مساهمة حديثة مع البحث والتصنيع والمبيعات معًا.
على مدار أكثر من 30 عامًا ، تلتزم شركتنا بنظام الإدارة العلمية الحديث والتصنيع الدقيق والريادة والابتكار. الآن أصبحت LIMING رائدة في صناعة تصنيع الآلات المحلية والخارجية.