bentonite mechanism
Surfactant-modified bentonite clays: preparation, …
Atrazine adsorption on modified clays was studied using a batch method. Bentonite clay was a poor adsorbent of atrazine as 9.4 % adsorption was observed at 1 …
ادامه مطلب
Efficient phosphate elimination from aqueous media by …
Bentonite is a 2:1 layered clay that mainly constructed by montmorillonite mineral, and its unit layer consists of two Si 4+ tetrahedral sheets sandwiching one A1 3+ octahedral sheet ... Adsorption mechanism was determined to be electrostatic attraction and ligand exchange, and metal-O-P inner-sphere complex formed on LFB surface. ...
ادامه مطلب
Adsorption Characteristics And Mechanism of U(Vi) In Water …
DOI: 10.1007/s11270-024-07159-5 Corpus ID: 269965546; Adsorption Characteristics And Mechanism of U(Vi) In Water By Dopamine Hydrochloride Modified Bentonite @article{Li2024AdsorptionCA, title={Adsorption Characteristics And Mechanism of U(Vi) In Water By Dopamine Hydrochloride Modified Bentonite}, author={Longxiang Li and …
ادامه مطلب
Experimental study on the mechanisms of bentonite slurry …
As pointed out by Talmon et al. (2013), the penetration process of bentonite slurry in front of the face of shield tunnel is divided into two distinct stages: the mud spurt and the filter cake formation.They performed slurry penetration tests, comparable to the ones described later in this paper, applying a constant pressure on the slurry and …
ادامه مطلب
Modelling contaminant transport in fly ash–bentonite
Modelling contaminant transport in fly ash–bentonite composite landfill liner: mechanism of different types of ions
ادامه مطلب
Temperature-humidity evolution and radon exhalation mechanism …
To ensure the safety and stability of the beach surface of the decommissioned uranium mill tailings pond, this paper uses red clay-bentonite and red clay (1:1) to carry out covering layer radon ...
ادامه مطلب
Immobilization of phosphorus in water-sediment system by …
Four kinds of iron-based materials, i.e., iron-modified attapulgite, calcite, bentonite and dolomite (abbreviated as Fe-ATP, Fe-CA, Fe-BT and Fe-DOL, respectively) were prepared and used to immobilize the phosphorus in the system of overlying water (O-water) and sediment under the feed input condition, and their immobilization efficiencies …
ادامه مطلب
Clay-based materials for enhanced water treatment: …
Bentonite is a type of clay composed mainly of montmorillonite. It has a high surface area and a strong affinity for organic compounds and certain heavy metals. Bentonite clay is widely used in the removal of contaminants from water and in the purification of edible oils and wines . Montmorillonite is a type of clay with excellent …
ادامه مطلب
Characterization of activated bentonite clay mineral and the mechanisms …
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) (an …
ادامه مطلب
Preparation of CTAB intercalated bentonite for ultrafast …
In this study, CTAB was used to achieve organic modification of bentonite and the adsorption mechanisms of modified bentonite (CTAB-B) for acid red (AR) and acid fuchsin (AF) were studied in detail. The characterization studies revealed the basal spacing of CTAB-B increased from 1.5499 nm to 2.7886 nm, and its thermal stability and …
ادامه مطلب
One step acid activation of bentonite derived adsorbent …
Modified bentonite. Bentonite, supplied by Sigma-Aldrich was applied as the raw precursor in this work. The acid modification was conducted by properly mixing bentonite with 8 M of nitric acid at ...
ادامه مطلب
Application and removal mechanism of ZnO/bentonite …
Dry desulfurization technology is one of the important means of flue gas desulfurization and SO2 control. In this paper, a series of desulfurizers with zinc oxide as the active component and bentonite as the carrier were prepared by the sol–gel method. The performance of the desulfurizers under different preparation process conditions …
ادامه مطلب
Review of polymer-amended bentonite: Categories, …
The adsorption effect between bentonite and polymer is the main mechanism for polymer-amended bentonite. Adsorption refers to the effect of a polymer …
ادامه مطلب
Insights into the high temperature-induced failure mechanism …
So, the failure mechanism of bentonite under high-temperature conditions remains to be elucidated. Combined with molecular dynamics simulation, experiments and multi-characterizations, the failure mechanism of clay in the water-based drilling fluid at ultrahigh temperatures was revealed. It was found that high temperature could lead to ...
ادامه مطلب
Insight into barrier mechanism of fly ash-bentonite blocking wall …
Taking Pb (II) as the target pollutant in groundwater, the barrier mechanism of fly ash-bentonite blocking wall was studied from three aspects, i.e., the adsorption mechanism, migration characteristic and influencing factors for service life. The adsorption isotherms and the kinetics of fly ash-bentonite were most in line with Freundlich model ...
ادامه مطلب
Temperature-humidity evolution and radon exhalation mechanism …
Considering the economy and practicability of covered disposal, bentonite is often mixed into soil for local soil modification to improve soil performance. At present, there are many studies on the structure and properties of bentonite-modified soil, but the law and mechanism of radon reduction by bentonite-modified soil are still unclear.
ادامه مطلب
Bentonite: Uses, Interactions, Mechanism of Action
Bentonite can cause a decrease in the absorption of Tauroursodeoxycholic acid resulting in a reduced serum concentration and potentially a decrease in efficacy. Technetium Tc-99m oxidronate The serum concentration of Technetium Tc-99m oxidronate can be increased when it is combined with Bentonite.
ادامه مطلب
Characterization of activated bentonite clay mineral and the mechanisms underlying its sorption for ciprofloxacin from …
Swelling Mechanism. The swelling mechanism of bentonite results from the unique microstructure and its net negative charge (Low 1987). Bentonite is a mixture of clayey …
ادامه مطلب
Efficient removal of nitrate by three-dimensional …
Efficient removal of nitrate by three-dimensional electrocatalytic system with bentonite-based Cu-Ag particle electrode: Fabrication, process and mechanism. Author links open overlay panel Ruihua Xue a 1, Linye Zhang a b 1, Junchi Gu a, Yanling Zhou a, Guangtao Wei a, Changli Yang a, Zhile Huang a, Zhiwei Xie a. Show more.
ادامه مطلبAlkaline buffer characteristics and mechanism of …
Based on the alkaline buffer mechanisms, the thickness of the bentonite buffer barrier without ABC was calculated to be 71.83 cm when the operation time was 10,000 a, which could be used for ...
ادامه مطلب
Sodium salt-assisted low temperature activation of bentonite …
The unique feature of bentonite is the formation of thixotrophic gels in the aqueous medium to enlarge its volume at 12–15 times of its dry bulk. When bentonite is …
ادامه مطلب
Magnetized bentonite modified rice straw biochar: …
Bentonite (BT) is a sodium bentonite obtained from Xi'an Wen ye Trading Co., Ltd. ... These tests revealed that the predominant mechanisms contributing to the adsorption of Cd(II) by Fe 3 O 4 @B-Bc were cation exchange (35.15%), physical adsorption (30.72%), electrostatic interaction (17.18%), complexation via functional …
ادامه مطلب
Experimental study on the mechanisms of bentonite slurry …
To identify the mechanism of mud spurt and filter cake formation through the measured permeability of sand for the bentonite slurry k b, (b) ... The bentonite slurry penetration in front of the tunnel face significantly influences the face stability during slurry shield tunneling. In this study, the mechanism of slurry-soil interaction is ...
ادامه مطلب
Efficient removal of nitrate by three-dimensional …
The Cu-Ag/Bent was prepared by sodium borohydride-based liquid-phase method through simultaneous reduction of Cu 2+ and Ag + according to the existing research [11,437].The experimental schematic of the preparation process is shown in Fig. 1 (a).First, an amount of purified bentonite was mixed with 50 mL of deionized water, and …
ادامه مطلب
Adsorption Characteristics And Mechanism of U(Vi) In Water …
In this study, bentonite (B) was modified by hydrochloric acid dopamine (PDA), and the modification was confirmed by XRD, SEM, EDS and thermogravimetric analysis. Hydrochloric acid dopamine modified bentonite (PDA-B) was synthesized by a facile one-step hydrothermal method, and the obtained material exhibited particle-like …
ادامه مطلب
Cd(II) and Pb(II) absorbed on humic acid-iron-pillared bentonite …
The micro/mesostructure and surface morphology play a vital role in the physical sorption. The SEM micromorphology of the original bentonite particles presented a thick layer, and the overall distribution was sporadic and uneven (Fig. 1 a).After modified by iron column proppant, the contour structure of Fe-PILC was obvious, and the particles …
ادامه مطلب
Effects of bentonite on pore structure and permeability of cement
However, when bentonite with the same particle dimension as quartz was introduced, waterproof performance of cement mortar has been significantly enhanced, and the mechanism of bentonite how inhibits water from passing through the mortar matrix is shown in Fig. 9. Download: Download high-res image (296KB) Download: Download full …
ادامه مطلب
Chemical and mineralogical reactions of bentonites in …
Bentonites are proposed to be used as buffers in high-level radioactive waste repositories. The elevated temperatures in repositories may, however, affect …
ادامه مطلب
Stability Analysis of GMZ Bentonite Colloids: Aggregation Mechanism
The colloids compose primarily of montmorillonite (∼ 92 wt.%) with minor cristobalite (∼ 8 wt.%) (Fig. 1).It is a novel and interesting finding, since the contents of quartz (20 wt.%) and albite (12 wt.%) in the bulk form of GMZ bentonite are much higher than that of cristobalite (6 wt.%) [22] but do not show up in the colloid form.. There are …
ادامه مطلب
Modelling contaminant transport in fly ash–bentonite
in y ash–bentonite composite landll liner: mechanism of dierent types of ions ...
ادامه مطلب- فهرست عملیات معدن در نیجریه
- دستگاه فرز کولکاتا سین سیناتی مدل شماره 118
- کرومیت олборлох арга
- اصل کار نوار نقاله های ادویه ای
- قیمت دستگاه خشک کن شن و ماسه کوارتز
- کاتالوگ تجهیزات ساختمانی هیوندای
- پالایشگاه طلا و نقره
- تولید کنندگان ماشین آلات پودر سازی پون هند
- مقاومت فشاری بازالت چقدر است
- جداسازی مغناطیسی در آباده
- What Is Dusting Mining
- efficient mobile copper ball mill for sale in Mexico
- export crusher pe x jaw crusher
- wet ball mill gambar mesin
- Conveyor Belt Building Machine
- mess grinder machine
- iso certification cone crusher gold mining equipment
- stone crusher portable ic engine
- silica sand washing plants in Oman
- china crusher dust washing plant 50 tph in spain