Bentonite Addition: A Viable Option for Ballasted …
The main objective of this project was to evaluate the potential benefits of a bentonite-derived product as an in-situ settling and flocculation improvement options and to quantify the benefits in terms of additional secondary clarifier …
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Bentonite in Winemaking: A Complete Guide to Wine …
Bentonite works via flocculation. Its negatively charged particles bind to positively charged proteins in the wine. ... Mid-fermentation addition of bentonite can be effective, particularly in white wines. The natural mixing action of fermentation helps distribute the bentonite in the wine. This may improve its effectiveness. Post-Fermentation ...
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Removal of methylene blue (basic dye) by coagulation-flocculation …
Second, addition of flocculants (for example, high molecular weight organic polymers) is subsequently performed to allow for formation of larger and heavier flocs that can be preferentially ...
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Adsorption and flocculation of bentonite by chitosan with …
Chitosans with different degrees of deacetylation (DD) and molecular weights (M w) were tested for the flocculation of bentonite suspensions prepared with demineralized water (DW) and tap water (TW), respectively.Flocculation kinetics model of particles collisions combining zeta potential and turbidity measurements was employed to investigate the effects of the DD and M …
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Effects of polyacrylamide addition and dosage on the …
Download Citation | Effects of polyacrylamide addition and dosage on the effectiveness of sludge-recycling enhanced flocculation | The dosage effect of polyacrylamide (PAM) with long-chain ...
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Efficiency of a flocculent consisting of bentonite clay and fly …
Acid mine drainage was collected from the western decant in Krugersdorp, South Africa, to conduct a series of laboratory tests using 200 mL of AMD in five beakers dosed with …
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Preparation, application, and mechanism of starch modified
When the addition of MDDF was 0.08%, and the amount of bentonite was 0.3%, the internal drainage content reached 727 g in 60 s, which was not relatively different from that of the CPAM system, evidently improving the drainage performance of the paper material.
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PEER-REVIEWED ARTICLE bioresources
conditions and the addition of 0.08% MDDF and 0.3% bentonite, the initial floc was broken via high-speed shearing. Meanwhile, the inorganic filler was added, and the retention effect of the MDDF-bentonite system was close to that of the cationic polyacrylamide (CPAM)-bentonite system. The MDDF-bentonite system exhibited a patch-bridging mechanism.
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Enhancement of water quality in water treatment plant …
using bentonite as coagulant addition Ibrahim Mohammed1, Safaa K.Hashim Al-Khalaf 2, 3, Husam H Alwan1, Ahmed Samir Naje*2 ... these mineral resources as flocculants has a number of advantages, including high availability, little secondary pollution, and low cost. It was discovered that the raw water entering the Kerbala water treatment plant ...
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The Aggregation of Bentonite Using Poly(N …
separate bentonite and treated water by adding flocculant [17]. As general floc-culants, aluminium or iron- -based inorganic flocculant and polymeric flocculant such as polyacrylamide are used [19][18]. However, it is necessary to construct an additional dewatering process because these flocculants aggregate soil par-
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Flocculation behaviour of bentonite clay-water …
The effect of polyacrylamide (PAM) as flocculant, NaCl electrolyte concentration and pH on the degree of flocculation of bentonite suspension has been investigated.
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Frontiers | Evaluation of Anionic and Cationic Pulp-Based Flocculants …
where T 0 is the turbidity of the initial wastewater at time zero, and T f is the turbidity of the supernatant of the treated sample at a given time. In some cases, values of turbidity removal lower than zero were obtained. This is because just after addition of bentonite turbidity usually increases, and, if the settling of the particles is poor, even after further addition …
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Combination of talc-bentonite for deposition control in papermaking
Therefore, the addition of a small amount of talc in combination with bentonite or a bentonite/treatment polymer program will allow detackification of the remaining unretained pitch particles. The term "paper machine", as used herein, includes felts, pumps, wires, tanks, pipes, and similar associated parts as well as all metal surfaces where ...
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Assessing the efficacy of bentonite as a coagulant aid for …
This study aims to demonstrate the efficacy of both raw and pure bentonite as a coagulant/adju - vant in treating raw water from the Al Hoceima plant. The focus of this study lies in the evaluation of two distinct coagulant combinations with bentonite: aluminum sulfate/bentonite and chitosan/ bentonite. Additionally, an assessment is made on the contrasting efficiencies of pure and raw ...
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Flocculation of bentonite particles by a cyanobacterial …
From this study, it can be concluded that the role of CaC12 is to increase the amount of adsorbed flocculant on the bentonite particles, at any given flocculant concentration. …
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REMOVAL OF AMMONIUM ION BY ADSORPTION ON BENTONITE …
At a contact time of 2 minutes, before the addition of coagulant and flocculant, the adsorption capacity is 0.89 mg NH 4 + /g, while at a contact time of 10 minutes, the adsorption capacity is 1. ...
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Eco-friendly decolorization of cationic dyes by coagulation …
It was found that the removal of the dyes increased with addition of SA as the flocculant/coagulant aid. Bentonite as a natural coagulant aided by the biodegradable flocculant, SA, is an effective combination for removal of basic dyes (color removal). ... The waste water from the textile dyeing industry pr oduces large amount of coloured water ...
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CN109182609B
The sulfur-free clarification process of sugarcane juice by bentonite method as claimed in claim 1, characterized in that: in the secondary adsorption and decoloration process, the addition amount of the chitosan/bentonite compound is calculated according to the addition amount of 0.002g to 0.02g of the chitosan/bentonite compound in 1mL of ...
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Preparation and Mechanism of a New Enhanced …
The optimum preparation process of flocculant BTA has shown 29.5% acid bentonite part, 29.5% alkaline bentonite part, 15% PAC, 1% CPAM, 5% ferrous sulfate, and 20% aluminum sulfate. BTA was used...
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REMOVAL OF AMMONIUM ION BY ADSORPTION ON …
minutes, before the addition of coagulant and flocculant, the adsorption capacity is 0.89 mg NH 4 ... followed by the addition of the same amount of bentonite to each. Contact time of ammonium ion ...
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Enhancement of flocculation and shear resistivity of bentonite
The optimum dosage of a flocculant or a coagulant reflects the amount that achieves the maximum treatment with minimum amount of chemicals. This ensures the best performance with the lowest possible cost. Ideally, a turbid system tends to decrease in turbidity upon addition of coagulant dosages at the beginning, until the optimum dosage is reached.
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Analysis of the effectiveness of combining inorganic …
In the second trial, which involved the use of alum with chitosan and bentonite, the doses of aluminum sulfate and chitosan were maintained at 10 mg/L, while the bentonite dose was adjusted from 30 mg/L to 250 mg/L. Various parameters were analyzed to determine the optimal conditions for each parameter when using coagulant and flocculant ...
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The Aggregation of Bentonite Using Poly( N
Sedimentation tests of bentonite suspension were carried out by adding various concentrations of poly(N-isopropylacrylamide) (PNIPAM) with different molecular weights as flocculant below and above lower critical …
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The effect of flocculants, shear, vacuum and depithing …
bentonite addition level must be optimised for further ... DDJ resulted in observed which would lead to a 'patchy' the entire amount of water in the ... without CPAM and bentonite flocculants ...
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(PDF) Effect of cetyltrimethylammonium bromide on flocculation …
Using cationic polymer flocculants has a high flocculation effect on bentonite. However, the flocculation mechanism is unclear. ... An amount of 100 ... bentonite. In addition, ...
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Preparation and Mechanism of a New Enhanced Flocculant …
Calcium base bentonite being treated as the main base, a new functional bentonite base composite flocculant BTA aiming at enhancing flocculation rapidly, was prepared by …
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Physico-chemical aspects in flocculation of bentonite …
The flocculation efficiency was determined according to the final turbidity alter 30 rain. Advorption Bentonite suspension (0.6 g/I) was stirred for 24 h, prior to adsorption experiment. The flocculant solutions and the CaCI2 solutions were added to the suspension and the mixture was shaken for 24 h (16 strokes/rain, 37.5).
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Elucidation of the aggregation mechanism of bentonite with …
In addition, the state of the bentonite aggregates was observed to investigate its association with the sedimentation rate. ... Relationship between the amount of flocculant adsorbed on the bentonite aggregates and the concentration of flocculant added to the bentonite suspension. ... the bentonite amount in the supernatant solution at pH10 was ...
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Batch Sedimentation Studies for Freshwater Green Alga
In presence of flocculant addition in 1:1 concentration ratio between extracted chitosan and natural bentonite clay, the surface charge (in terms of conductivity) was the maximum (at 2,260 μS/cm) on the flocs or aggregates formed possibly due to adsorption of algal cells on to the larger surface area made available by fine particles of ...
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Performance of bentonite clay as a coagulation aid on water quality
Also the increase of the dose of bentonite decreases the pH more than the use of aluminum sulfate alone, which makes the water pH optimal for coagulation–flocculation, but also to improve the ...
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