One step acid activation of bentonite derived adsorbent …
The effect of solution pH on the adsorption process was examined by regulating the solution pH from 2 to 12 by the addition of 0.1 M of hydrochloric acid (HCl) or sodium hydroxide (NaOH) solution.
اقرأ أكثر
Modification of bentonite clay & its applications: a review
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 ...
اقرأ أكثر
Process for converting calcium bentonite to sodium bentonite
Yildiz et al. activate local Ca-bentonite with soda ash to increase the Na/Ca ratio and disperse the activated bentonite in sodium hexametaphosphate solutions to increase the stability of the suspension. ... Process for producing sodium-base bentonite from calcium-base bentonite 2015. US US14/953,916 patent/US9676669B1/en not_active ...
اقرأ أكثر
Sodium salt-assisted low temperature activation of bentonite …
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, functional, and textural analysis.
اقرأ أكثر
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 bentonite. The main steps in the proposed process included wet sodium activation of bentonite ore, organic compounding and high-pressure roll grinding.
اقرأ أكثر
Activating natural bentonite as a cost-effective adsorbent for removal
The bentonite is a widely available and abundant natural mineral, and can be a low cost adsorbent for water and wastewater treatment. This study reported here was directed towards identifying a cost-effective activation protocol for enhancing the adsorption capacity of Australian bentonite for removal of toxic contaminants in wastewater.
اقرأ أكثر
Acid-activated Sodium Bentonite and Kaolin Clay: …
The novelty of this study is about sodium bentonite characterization and the results show the prominent behaviour with structural, elemental, morphological, and thermal analysis. Acid-activated kaolin sample has less effect in comparison with acid-activated sodium bentonite. As the removal of the hy …
اقرأ أكثر
Activated sodium bentonite as an adsorbent for efficient …
The present investigation utilized activated sodium bentonite clay as an adsorbent agent to facilitate the elimination of Cr (VI). The clay was subjected to acidification and thermal modification techniques to enhance its adsorption capacity.
اقرأ أكثر
Rehydration Driven Na-Activation of …
Sodium activation, which is an example of chemical modification, is a process developed in the 1930s [5,6]. The discovery was prompted by the observation that only bentonites rich in Na-smectites were suitable for the use …
اقرأ أكثر
Effective Approach of Activated Jordanian Bentonite by Sodium …
The purified bentonite was activated by sodium ions at room temperature. FTIR, XRD, TGA, and BET surface area measurements were performed. OMW was contacted with both purified and activated bentonite in the batch technique to figure out the optimum parameters for the adsorption process.
اقرأ أكثر
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 bentonite. The main steps in the proposed process included wet sodium activation of bentonite ore, organic compounding and high-pressure roll grinding. The optimum procedure is recommended as …
اقرأ أكثر
Thermal activation, characterization and performance …
The sodium removal percentage for bentonite activated for 3 h increases with activation temperature. For bentonite activated for 6 and 12 h, the trend in sodium removal follows the trend observed for the specific surface area shown in Figure 2.
اقرأ أكثر
Preparation of Sodium-Activated Natural Bentonite …
Loading activated natural bentonite clay (BC) into any type of polymer can improve the adsorption property of electrospun nanofibres, but BC must be well dispersed, suspended and loaded to achieve any benefit. Naturally occurring calcium BC was completely activated to sodium BC with a 4 wt.% sodium carbonate (Na2CO3)/BC ratio. High throughput ...
اقرأ أكثر
Effective Approach of Activated Jordanian Bentonite by …
The Jordanian Ca-bentonite is activated by sodium ions to produce an efficient adsorbent with improved adsorption capacity toward pollutants in OMW. AJB will be examined …
اقرأ أكثر
Activated sodium bentonite as an adsorbent for efficient …
The present investigation utilized activated sodium bentonite clay as an adsorbent agent to facilitate the elimination of Cr (VI). The clay was subjected to acidification and thermal …
اقرأ أكثر
Rehydration Driven Na-Activation of Bentonite—Evolution …
Sodium activation, which is an example of chemical modification, is a process developed in the 1930s [5,6]. The discovery was prompted by the observation that only bentonites rich in Na-smectites were suitable for the use as binders in foundry moulding sands, while bentonites containing Ca-smectites proved inadequate for this purpose [ 4 ].
اقرأ أكثر
Adsorption of sodium from saline water with natural and acid activated …
An optimum removal of sodium by activated bentonite was 19.4% at adsorption conditions of time 180 min, salt concentration of 3486 ppm, solution pH of 10 and adsorbent dosage of 0.5 g. ... small R 2 value in this model is to mean the process is homogenous surface and chemical process better explains sodium adsorption to bentonite. A small value ...
اقرأ أكثر
Ageing characteristics related to cation exchange and …
Sodium-activated bentonite is a chemically modified bentonite, originally a non-sodium bentonite, whose interlayer cations are replaced by Na + by means of cation exchanges, usually in soda ash solutions (Na 2 CO 3), a process known as sodium activation [4, 5].
اقرأ أكثر
Activation of Non-Swelling Bentonite
The near surface bentonite has undergone extensive calcification, and in some zones it is so heavily altered as to diminish its swelling properties. These low-swelling bentonites can be activated by conventional soda-ash additions.
اقرأ أكثر
Uranium Adsorption from Aqueous Solution Using …
Sodium Bentonite Activated Clay. J Chem Eng Process Technol 8: 349. doi: 10.4172/2157-7048.1000349 ... sodium bentonite by a simple sodium exchange process. Since the exchangeable cation present in bentonite are easily replaceable, Na+ is readily replaced by Ca2+ and Mg2+ under leaching
اقرأ أكثر
Ageing characteristics related to cation exchange and …
Sodium-activated bentonite is a chemically modified bentonite, originally a non-sodium bentonite, whose interlayer cations are replaced by Na + by means of cation …
اقرأ أكثر
Comparative study for removal of phosphorus from aqueous …
The sodium content value (3.12%) recorded for Na-bentonite shown in Table 2 was similar to those previously reported in the literature 36 where sodium content between 2.9 and 3.2% was found by ...
اقرأ أكثر
(PDF) Bentonite processing
Activated Bentonite has initial composition of Ca 2+ -ions in the intermediate layer replaced with Na + -ions in a technical process known as alkali-activation.
اقرأ أكثر
Activation of Non-Swelling Bentonite
The near surface bentonite has undergone extensive calcification, and in some zones it is so heavily altered as to diminish its swelling properties. These low-swelling …
اقرأ أكثر
Sodium salt-assisted low temperature activation of bentonite …
The activated bentonite (BB) was collected by centrifugation, subsequent by washing extensively with deionized water (DW) until the washing solution reached to a neutral pH before it was dried...
اقرأ أكثر
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 for an initial …
اقرأ أكثر
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 bentonite. …
اقرأ أكثر
Effective Approach of Activated Jordanian Bentonite by Sodium …
The Jordanian Ca-bentonite is activated by sodium ions to produce an efficient adsorbent with improved adsorption capacity toward pollutants in OMW. AJB will be examined as an adsorbent for the removal of TPC from OMW, investigated for the effect of the adsorbent dosage as well as the initial concentration and temperature on adsorption efficiency.
اقرأ أكثر
Bentonite powder, sodium activated; 1000 kg of bentonite sodium
Bentonite powder, sodium activated; 1000 kg of bentonite sodium activated powder with particle sizes below 74 µm and a moisture content ranging between 8 and 12%, stored in silo, ready to be shipped in bulk.; ... The resulting LCI calculation is based on the activated bentonite production process route and corresponds to generic industry ...
اقرأ أكثر
Sodium salt-assisted low temperature activation of bentonite …
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 …
اقرأ أكثر