Improvement of Used Transformer Oils with Activated Bentonite
Environmentally, after activated BENTONITE treatment process for the used transformer oil, activated Bentonite is filtered and can be recycled by re-using it in many applications like wells digging and molding. 6. References [1] H. I. Inyang and L. Kaanagbara, "Estimation of Electric Transformer Service Life from Oil Degradation Kinetics ...
Optimization of bleaching power by sulfuric …
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 …
Pristine and activated bentonite for toxic metal removal …
Thermodynamic data on metal adsorption on clays are limited, with less still Fe 2+, Zn 2+, and Ni 2+ adsorption onto bentonite, and none on acid-activated bentonite. Yavuz et al. found that ΔH o, ΔS o and ΔG o for Cu 2+ adsorption onto Turkish kaolinite are 39.5 kJ/mol, 11.7 J/mol.K and −4.6 kJ/mol, respectively.
Bleaching of Vegetable Oil using Organic Acid …
acid (Sulfuric acid and hydrochloric acid) activated bentonite clay is very efficient and shows satisfactory results. But there is a major disadvantage associated with its use. ... overall economics of the process[5]. Application of fuller's earth for the bleaching of vegetable oil involves certain issues like filtration,
Optimization of bleaching power by sulfuric acid activation …
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 …
Clay-based materials for enhanced water treatment: …
Water treatment is of paramount importance to ensure the availability of clean and safe drinking water. In recent years, clay-based materials have gained significant attention as promising adsorbents for water treatment applications. This review provides a comprehensive analysis of different clay types and their surface adsorption properties …
Activating natural bentonite as a cost-effective adsorbent for removal
To determine the possible crystal phase changes of the activated bentonite, we examined the raw and activated bentonite samples with XRD analysis (XRD, Bruker AXS D8 Advance diffractions) using a Huber Guinier Image Plate G670 with Co Kα1 radiation over an angular range of 5–90°.The XRD patterns were recorded on a …
One step acid activation of bentonite derived adsorbent …
Activated bentonite clay–based dry-wash purification of waste cooking oil biodiesel in comparison with a wet washing process G. N. Rameshaiah Rajesh Kumar Kodi
Naturally occurring bentonite clay: Structural augmentation
XRF analysis was carried out to confirm the changes in the chemical composition of the bentonite clay due to acid treatment as described in Section 2.3.The results are presented in Table 2.The raw bentonite sample predominantly contained silica (SiO 2), alumina (Al 2 O 3) and iron oxide (Fe 2 O 3).In addition, some impurities in the …
Thermal activation, characterization and performance …
The thermally activated bentonite was studied for the removal of sodium ions from an aqueous solution using batch adsorption. The batch adsorption was conducted …
Preparation and Characterization of Acid …
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 …
The application of Rumex Abysinicus derived activated …
pfomrer anec 33. e use of inexpensive and abundant materials like activated carbon and bentonite clay helps keep costs low, while the composite's high adsorption capacity reduces the amount ...
Optimized Bentonite Clay Adsorbents for Methylene Blue …
This study addresses the urgent need for effective water treatment methods by synthesizing and characterizing activated bentonite clay (ABC) adsorbents to remove methylene blue () from aqueous solutions efficiently. Conventional adsorbents often exhibit limitations in efficiency and regeneration capabilities, necessitating novel …
(PDF) Acid activation of bentonite clay for recycled automotive …
the use of the obtainedthermal recycling bentonite waste (TRBW) as a novel low-cost adsorbent for the removal of heavy metals from aqueous solution using the batch system.
Influence of acid activation on the NH3-adsorption …
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 …
Thermal activation, characterization and performance …
Bentonite activated for 6 h at 300 °C showed a maximum specific surface area of 81.74 m 2 /g while the raw one showed 57.6 m 2 /g. However, the cation exchange capacity value of the raw bentonite was found to be 82.1 meq/100 g while the value was reduced to 67.2 meq/100 g for treated bentonite with high specific surface area. To …
Oilfield produced water treatment to clean water using …
The activated carbon and bentonite clay were prepared as the adsorbent bed. The particle size of activated carbon and the bentonite clay were 80 and 100 mesh, respectively. The activated carbon and bentonite clay were firstly washed by using distilled water and dried in an oven at 105 °C overnight.
Characteristics of Raw and Acid-Activated Bentonite and Its …
This study aimed to investigate the characteristics of acid-activated bentonite by focusing on its capability of improving the quality of tap water used during wire electrical discharge machining. Raw bentonite (RB) was activated using sulfuric acid, nitric acid, and phosphoric acid solutions with c …
Rheological Properties of Acid-Activated Bentonite …
Activated Na-bentonite was prepared using sulfuric acid. Flow curves of the suspensions were modeled using the Herschel-Bulkley equation, which performed well for this system. The Herschel-Bulkley yield stress increased with the solids concentration and showed a maximum and minimum at the NaCl concentrations of 0.001 M and 0.01 M, …
Characterization of activated bentonite clay mineral and …
The BET surface area analysis revealed that acid-activated bentonite (AAB) possessed more than two fold higher surface area as compared to NB. Combining pH zpc measurements, effect of solution pH and CIP speciation revealed that CIP sorption onto bentonite is highly dependent on solution pH. Kinetic studies confirmed that CIP …
Sodium salt-assisted low temperature activation of bentonite …
where k 1 (1/h) and k 2 (g/mg h) is the adsorption rate constant for the pseudo-first and pseudo-second order kinetic equation respectively, while a (mg/g h) is the initial sorption rate and b (g ...
Rehydration Driven Na-Activation of Bentonite—Evolution …
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 Na2CO3 of concentration corresponding to 0.5, 1.0, 1.5, or 2.0 cation exchange capacity (CEC) of clay, was investigated. Structural and compositional …
Characteristics of Raw and Acid-Activated Bentonite and Its …
Materials. In the study, RB and the required acid solutions were purchased from FUJIFILM Wako Pure Chemical Corporation (Japan). Acid-activated RB was prepared via the following method: Five grams of RB was mixed with 50 mL of sulfuric acid, nitric acid, and phosphoric acid solutions at concentrations of 1, 5, and 10 mol/L, respectively. The …
Rheological behavior of activated bentonite suspensions …
Afterwards, the grinding process was done with ball mill. As a result of the grinding process, the micronized samples were sieved at <75 μm particle size. After the sieving, 0.5 wt% MgO was added with dry mechanical mixing. Activation process was completed as a result of these steps and activated bentonite samples were made ready.
Activated Charcoal vs Bentonite Clay: Comparing Detoxicants
Activated charcoal and bentonite clay are two popular natural substances used in many beauty and health products. These two ingredients are known for their detoxifying properties, and they are often used in skin care products, such as face masks and cleansers, to purify the skin and treat a variety of skin concerns. ... This process, …
A systematic and comprehensive study of Eco-friendly …
Acid activated bentonite resulted as a viable and five times reusable adsorbent for the adsorption process of ciprofloxacin removal. Barakan and …
Acid activation of bentonite clay for recycled automotive …
In this study, the use of bentonite clay modified by acid activation is proposed. Sulfuric acid, acetic acid (v-acid/w-clay ratio=20, 40 and 60%) and sulfuric/acetic mixtures (1:1 …
Characterization of activated bentonite clay mineral and the mechanisms underlying its sorption for ciprofloxacin from …
1. Introduction. One application of calcium bentonite with a significant market is the decolourization of vegetable, animal and mineral oils. Most of the calcium …
Synthesis, characterization and properties of organically …
A new process for manufacturing organically compounded bentonite was developed successfully based on the organic intercalation and layered structure of …
Activation of Bentonite Clay with H 2 SO 4 and Study It's …
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 ...