— Bentonite clay is one of the oldest clays that humankind has been using from ancient times as traditional habits and remedies. In recent years researchers have found many applications of bentonite ...

 — The characteristics of acid-activated raw bentonite (RB) activated with binary acid solutions sulfuric acid + nitric acid, nitric acid + phosphoric acid, and phosphoric …

Table 1 shows the experimental values for the activated bentonite clay adsorption capacity at the design point. Table 1. Experimental response for the activated bentonite clay …

Pakistan is adsorption by inorganic acid activated fuller's earth (bentonite clay). Treatment with inorganic 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. Fumes of hydrochloric acid or sulfuric

 — In the acid-activated bentonite clay (AABC) procedure, chemically pure BC was combined with varying concentrations of sulfuric acid (H 2 SO 4 98%) (1 M, 4 M, 7 M, 10 M, 13 M, 16 M, and 18 M). The …

 — During the acid activation process, the protons from the acid medium penetrated into the bentonite structure and attacked the OH groups, thereby causing alterations in the adsorption bands attributed to the OH vibration and octahedral cations, as mentioned earlier . Finally, following the activation process, most band positions did not …

 — Preparation of acid-activated pillared bentonite (Al-ABn) Acid activation of ABn was performed under mild reaction conditions using high bentonite content (6% w/v) and 6 N sulfuric acid at 65 °C for 10 h. The detailed methodology for the synthesis of acid activated bentonite was reported earlier (Pawar et al., 2015, Pawar et al., 2016).

A calcium bentonite clay from Boane region (Mozambique) was subjected to an Na2CO3 activation process. The methylene blue test together with energy-dispersive X-ray spectroscopy (EDX) analysis indicated the successful ion exchange of Ca2+ by Na+ ions since the cation exchange capacity (CEC) increased from 67.5 to 74 meq/100 g and the …

 — 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 …

 — Activated bentonites are low-cost acid catalysts used in several reactions. However, their application at an industrial scale is affected by the formation of colloidal suspensions when these bentonites are in aqueous solutions. In order to overcome these limitations, this work proposes obtaining a catalyst based on a composite containing …

 — Process flow diagram for bentonite processing (EPA, 2005) Slika 1. ... Acid activated bentonite . exhibits high surface area > 200 m 2 /g and large micropore . volume what makes it excellent ...

 — The specific surface area and the textural properties of the acid-activated bentonite are strongly affected by the process parameters. The optimum conditions to obtain the maximum specific surface area of acid-activated bentonite were as follows: temperature 90 °C, acid normality 4.5, stirring rate 450 rpm, solid-to-liquid ratio of 1:4.5 …

 — 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 28.25 µm in ...

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 …

Terram activated bleaching earth is produced with high-standard manufacturing process by heating and cooking its raw material (activated calcium bentonite) with sulfuric acid. Our two factories are located in Legok Tangerang, Indonesia, near the area of fuller's earth raw material source, which makes us more efficient and capable in producing ...

 — 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 …

In the study, acid-activated bentonite using sulfuric acid, nitric acid, and phosphoric acid solution was prepared, denoted as BS10, BN10, and BP10, respectively, and the adsorption capability of ions from tap water was assessed. The specific surface area and mesopore volume (2 < d ≤ 50 nm) of BS10, BN10, and BP10 exceeded those of RB. The ...

 — 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 …

 — The adsorption thermodynamic process was endothermic and spontaneous. The adsorption mechanism was explained by theoretical calculations and was in good agreement with the experimental results. ... However, glutaraldehyde crosslinked Cs@acid-activated bentonite (CsG@AAB) composite has not yet been employed as an adsorbent …

DOI: 10.1016/j.mtchem.2019.06.002 Corpus ID: 210755380; Removal of some harmful metal ions from wet-process phosphoric acid using murexide-reinforced activated bentonite @article{Cheira2019RemovalOS, title={Removal of some harmful metal ions from wet-process phosphoric acid using murexide-reinforced activated bentonite}, …

 — The acid modification was conducted by properly mixing bentonite with 8 M of nitric acid at 75 °C and 100 rpm. The modification process was terminated by the …

In recent decades, increased industrial, agricultural, and domestic activities have resulted in the release of various pollutants into the aquatic systems, which require a reliable and environmentally friendly method to remove them. Adsorption is one of the most cost-effective and sustainable wastewater treatment techniques. A plethora of low-cost bio …

Bentonite can be processed in several ways to optimize properties for the individual uses. Clariant's Adsorbents business operates 28 production sites that turn the raw bentonite clay into consistent quality products for …

 — The adsorption process was fast and the kinetic data fit better to the pseudo-second order kinetic model. ... such as battery manufacturing, metal plating, industries engaged in lead–acid batteries, as well as paint, oil, ... The N 2 adsorption–desorption isotherms of the raw and acid activated bentonite samples are presented in Fig. 3 (A ...

 — Acid-activated bentonite increases the adsorption capacity by using a specific acid activation process to increase the surface area and to enlarge pores [27, 28]. Clinoptilolite, with a honeycomb ...

 — 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 other flow parameters of acid-activated bentonite suspensions. Activated Na-bentonite was prepared using sulfuric acid.

 — acid activated bentonite. MCB. manganese oxide-coated bentonite. m. mass of adsorbent (g/l) q e. ... battery manufacturing process, the production of paints and pigments, and the glass production industry. Lead can enter the human body through inhalation, skin contact or with diet, and can produce adverse effects on virtually every …

 — The acid activation is mostly carried out by sulphuric acid or hydrochloric acid. This activation process is carried out in a ratio of 1:3 to 1:7 clay to acid and after some …

The plant produces 60,000 metric ton per annum of Sulphur-Bentonite (Straight Sulphur fertilizer-90%) as well as other Micro-Nutrients based fertilizers like (Cu, Ma, Zn, Bo, Fe, Mo and Mg). ... We are proud to be the first SB manufacturing plant in Sultanate Of Oman. Our products are being marketed under the popular brand name of OMASULF which ...

 — Both raw bentonite and acid-activated bentonite were submitted to an ion exchange process melts of AgNO 3 and NaNO 3 at 435 °C for 4 h. This process was conducted using 23 g of bentonite, 3 g of NaNO 3, and 0.5 g of AgNO 3. After the ion exchange, the bentonite was dispersed for 24 h in distilled water. The primary objective …