MENU
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 …
WhatsApp: +86 18221755073
A new process for manufacturing organically compounded bentonite was developed successfully based on the organic intercalation and layered structure of bentonite. The main steps in the proposed process included wet sodium activation of bentonite ore, organic compounding and high-pressure roll grinding. The optimum …
WhatsApp: +86 18221755073
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...
WhatsApp: +86 18221755073
A broad and weak d(001) peak was observed following the acid activation of bentonite using sulfuric acid, nitric acid, ... previous studies have investigated the adsorption method of heavy metal ions such as lead ion and copper ions and organic polymer compounds such as humic acid and dye using acid-activated bentonite. 15,20,36 ...
WhatsApp: +86 18221755073
Georgia Potsi, Athanasios K. Ladavos, Dimis Petrakis, Alexios P. Douvalis, Yiannis Sanakis, Marios S. Katsiotis, Georgios Papavassiliou, Saeed …
WhatsApp: +86 18221755073
The adsorbents, an organically activated bentonite (OAB) and a humic acid polymer (HAP), were tested in a common in vitro model with a pH course comparing the maximum pH changes that can be expected in the digestive system of a monogastric animal, i.e. pH 7.4 for the oral cavity, pH 3.0 for the stomach, and pH 8.4 for the intestines.
WhatsApp: +86 18221755073
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 (SSA), porosity and …
WhatsApp: +86 18221755073
The hydrochloric acid (HCl) (98%, = 1.98 g/cmd 3) and other used chemicals are of analytical grade. They were supplied by Merck Chemical Company. 2.2. Acid Activation The bentonite was prepared for activation by air-drying and grinding to a particle size of 0.075 mm. Twenty (20)
WhatsApp: +86 18221755073
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 …
WhatsApp: +86 18221755073
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, …
WhatsApp: +86 18221755073
This result clearly demonstrated that acid treatment is an economical and effective way of preparing low cost (∼ $400/t) porous activated bentonite clay which can …
WhatsApp: +86 18221755073
One step acid activation of bentonite derived adsorbent for the effective remediation of the new generation of industrial pesticides. Sci. Rep. 10, 1–13 (2020).
WhatsApp: +86 18221755073
J. Phys. Chem. All Publications/Website. OR SEARCH CITATIONS
WhatsApp: +86 18221755073
The activation of bentonite results in an increase in the number of active sites, increase the pore volume, increase the surface area, etc. The major process of …
WhatsApp: +86 18221755073
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 ...
WhatsApp: +86 18221755073
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, Rhodamine ...
WhatsApp: +86 18221755073
Organic treatment has sparked an explosive interest in a class of materials called polymer-clay nanocomposites (PCNs). The most commonly used clay mineral …
WhatsApp: +86 18221755073
The purpose of this study was to investigate the effects of solids concentration, salt concentration, and pH value on the shear rate, shear stress, and …
WhatsApp: +86 18221755073
The combination that is likely to be more preferable on an industrial scale was 100°C, 25% pulp density (w/v), 1m initial oxalic acid concentration, 60% recycling of the oxalate solution (making up an acid to bentonite ratio 0.2 w/w) and 6 h activation time.
WhatsApp: +86 18221755073
Magnesium and to a lesser extend, aluminium are the most readily removed elements during acid modification. Similarly, bentonite activation is a complex phenomenon that involves the substitution of exchangeable cations, Al 3+, Mg 2+, and Fe 2+ against protons from the octahedral sheet, resulting in the improvement of bleaching …
WhatsApp: +86 18221755073
The effect of acid activation under microwave irradiation on the textural and structural properties of bentonite was studied as a model reaction. A mathematical, second-order response surface model (RSM) was developed with a central composite design that incorporated the relationships among various process parameters (time, …
WhatsApp: +86 18221755073
19 research work is to give the alternative method for activation procedure of bentonite clay and 20 this method should be the safest method for both the labor and equipment used in vegetable 21 oil industry. 22 23 Index terms— bentonite clay; surface activation; organic acids; adsorption; fourier transform infrared 24 spectroscopy (ft-ir).
WhatsApp: +86 18221755073
Different organic (acetic acid, citric acids, and oxalic acid) and inorganic acids (HCL, H 2 SO 4, and H 3 PO 4 ) are used for acid activation (Avila et al. 2021;Javed et al. 2018;Kausar et al ...
WhatsApp: +86 18221755073
The aim of this study is to activate bentonite then to use it as a bleaching agent for edible oil. Sample of bentonite were obtained from Jabel Um Ali, North State of Sudan .X–ray fluorescence measurement was performed to determine the chemical composition of the raw clay. ... Two models for acid activation of the bentonites were developed by ...
WhatsApp: +86 18221755073
Download scientific diagram | FT-IR analysis of acetic acid treated clay from publication: Surface activation of fuller's earth (bentonite clay) using organic acids | Specific properties of ...
WhatsApp: +86 18221755073
The result shows the PB has the lowest removal efficiency as indicated in table 3; this may be during the purification of bentonite clay the organic matter is leached out and feldspar can be ...
WhatsApp: +86 18221755073
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 …
WhatsApp: +86 18221755073
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 Fe3+ 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 …
WhatsApp: +86 18221755073
Natural bentonite grounded from Sarolangun District of Jambi Province has been modified based on Thermal and Acid Activation (TAA). The thermal activation was conducted by calcination at ...
WhatsApp: +86 18221755073
Acid activation technique was opted for modifying natural bentonite (NB) to enhance the adsorptive removal of CIP from water. The BET surface area analysis …
WhatsApp: +86 18221755073Copyright © 2024 Sofol Industry & Technology Group Co., Ltd.
المنتجات
محلول
حول الولايات المتحدة
اتصل بنا