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).
Dry method gave high values of free swell to activate bentonite in which the value of the evidence of free swell index rea10 grams at a ched 26 ml/ concentration of 3% of sodium carbonate, while the value of evidence of free swell reached 20 ml/10 grams at a
The optimal ATA protocol identified in the study leads to approximately 25% increase in the Congo-red adsorption capacity of the activated bentonite. This activation method could be a cost ...
The statistical methods and mathematical modeling gave optimized activation procedure and the best bentonite output for application as ion-exchanger …
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 …
Acid activation of bentonite clay using nitric acid was achieved in this study. Enhanced morphology and physicochemical properties of pristine bentonite was …
The effects of activation parameters (time and temperature) on its physiochemical properties and its performance for the removal of sodium ions from water were investigated. 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 …
Toor et al. conducted thermal activation of bentonite in a muffle furnace in the temperature range of 50–500 °C for a predetermined time varying from 50 to 120 min. The maximum Congo Red adsorption was experienced when bentonite was activated at 100 °C for 20 min, and activated bentonite exhibited more than 20% increase in surface area with ...
The presence of emerging pollutants such as hazardous chemicals, pharmaceuticals, pesticides, and endocrine-disrupting chemicals in water sources is a serious concern to the environment and human health. Thus, this study focused on exploring the interaction mechanisms between ciprofloxacin (CIP) (antibiotic) and clay (a …
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 …
Cover the bentonite blanket with the 4-6 inches of soil you had removed before. Compact the soil. Fill the pond again. Alternative Method. Drain the pond. Evenly distribute the bentonite in the bottom of the pond area. Disk or till the bentonite with the soil until it reaches about 4-6 inches depth. Compact the soil. Fill the pond again.
In case pregel step and polar activation should be avoided, the BENTONE® SD grades are the products of choice. BENTONE® SD products However, in special cases e.g. in high solids and solvent less systems, chemical activation might be beneficial. The activation of BENTONE® SD grades follows in general the recommendations for the of conventional
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 …
The sodium salt-assisted low temperature activation of bentonite (BB) was attempted. The unique features of the raw bentonite and BB were characterized with respect to the morphological ...
The spectrum of the untreated sample shows an intensive band at 1048 cm –1 attributed to the Si–O stretching vibrations, and bands at 524 and 466 cm –1 assigned to Al–O–Si (octahedral Al) and Si–O–Si bending vibrations, respectively. Three peaks in the hydroxyl bending region at 917 cm –1 for Al 2 OH, 886 cm –1 for AlFeOH, and 850 cm …
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 …
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.
Chemical and thermal activation methods have been used for bentonite property enhancement (Barakan & Aghazadeh 2021). In our earlier work, the …
Bentonite is an essential binder in the iron ore pelletization process. However, limited research has been conducted on the correlation between the physical and chemical properties of bentonite and its pelletizing performances, while the evaluation criteria for pelletizing bentonite have not been standardized. To optimize the current evaluation …
Herein, the facile one step acid activation of bentonite derived functionalized adsorbent (AB) for the effective remediation of both ionic and non-ionic …
Thermodynamic analysis illustrated that the adsorption process was feasible and exothermic in nature, while the characterization findings verified the alteration of FTIR bands. Herein, the facile one step acid activation of bentonite derived functionalized adsorbent (AB) for the effective remediation of both ionic and non-ionic secondary …
DOI: 10.38173/RST.2024.27.1.5:61-70 Title: NEW METHODS OF BENTONITE ACTIVATION AND THEIR EFFICIENCY IN USED MOTOR OILS REGENERATION Authors: Kristi SHAHU Sara DERVISHI Diana GECAJ Arjan KORPA Valdet TENEQJA Adelaida ANDONI Section: Engineering Issue: 1(27)/2024 Received: 11 January 2024 …
acidic activation of clay while preserving the structure of its minerals is especially relevant. A promising way of activating bentonite-like clays is alkaline activation. This technique is more versatile than acidic activation in terms of both obtaining more active sorbents and having lower requirements for the initial feedstock.
Amongst methods of beneficiation for bentonite adsorption process are pillaring, calcinations, acid treatment and salt exchange.
The adsorption capacity of bentonite clay for heavy metal removal from wastewater can be significantly enhanced by a high loading of chitosan on the surface.
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 ...
Alkali activation with sodium carbonates is a traditional method to improve bentonite properties for a variety of applications. In some applications, natural sodium-rich bentonites are preferred, and custom regulations require proper declaration of Na-rich bentonites, with respect to activation.
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 ...