Flocculation of kaolin particles with cationic lignin

2019-2-25  Sedimentation velocities of kaolin and KLD/kaolin flocs were measured by an analytical centrifugation analyzer, Lumisizer (LUM GmbH, Germany) 61. In

SEDIMENTATION OF KAOLIN: EFFECTS OF

of compact flocs with lower inter-aggregate waters at lower PEI dosages. At high surface coverage of kaolin particles or with 0.4dwb% PEI, flocs formed are loosely packed and more

(PDF) SEDIMENTATION OF KAOLIN: EFFECTS OF

Solids content (wt%) of kaolin vs. time (min) with varying PEI dosages and Mw added into slurries at pH ~8 Kaolin is a 1:1 clay with a tetrahedral silica sheet attached to an

Effect of kaolin on floc properties for reactive orange

2018-7-24  Kaolin had significant influence on magnesium hydroxide-reactive orange floc formation and growth. The results showed that average floc size reached 16.31, 12.88 and 20.50 μm, respectively, in the rapid mixer, flocculation basin and sedimentation tank when kaolin concentration was 10 mg/L and reactive orange initial concentration was 0.25 g/L.

Flocculation of kaolin particles with cationic lignin

2019-2-25  Sedimentation velocities of kaolin and KLD/kaolin flocs were measured by an analytical centrifugation analyzer, Lumisizer (LUM GmbH, Germany) 61. In each measurement, 1 mL of a 0.4 g/L clay suspension was transferred into the cell of the instrument, centrifuged at different revolutions (200, 400, 800, 1600, and 3200 rpm) for 20 min, and the

Formation of Flocs and Sediments in the Presence of

Regularities of the flocculation of kaolin suspension with cationic polyelectrolytes based on 1,2-dimethyl-5-vinylpyridinium methyl sulfate were studied by turbidimetry, optical microscopy, and sedimentation methods. It was found that poly(1,2-dimethyl-5-vinylpyridinium methyl sulfate)-co-N-vinylpirrolidone promotes the formation of dense flocs and provide a complete sedimentation of the

Analysis of floc morphology in a continuous-flow

2017-2-1  The floc morphology was investigated in a continuous-flow reactor, in order to understand the evolution of flocs in practical flocculation and sedimentation processes in water utilities. Kaolin-humic acid suspension was used as the test water, and polyaluminum chloride was chosen as the coagulant.

METHOD OF RAPID DIFFERENTIAL FLOCCULATION OF

Sedimentation of the kaolin-polymer flocs is rapidly accomplished in settling tank 27. These flocs, upon standing, settle out of suspension with sedimentation rates varying from 2 to 10 minutes per inch of slurry depth used. Withdrawal of the titanium impurities remaining in suspension may be initiated by siphoning or other methods.

Characterization of Flocs and Floc Size Distributions

The analysis technique was applied to characterize flocs and floc particle size distribution as a function of coagulant dose. Removal of flocs by sedimentation was characterized by imaging, and the negative logarithm of the fraction of turbidity remaining after settling

Effects of humic acid on physical and hydrodynamic

The physical and hydrodynamic properties of kaolin flocs including floc size, strength, regrowth, fractal structure and settling velocity were investigated by in situ particle image velocimetry technique at different humic acid concentration. Jar-test experimental results showed that the adsorbed humic acid had a significant influence on the coagulation process for alum and ferric chloride.

Characterization of Flocs and Floc Size Distributions

The analysis technique was applied to characterize flocs and floc particle size distribution as a function of coagulant dose. Removal of flocs by sedimentation was characterized by imaging, and the negative logarithm of the fraction of turbidity remaining after settling

Formation of Flocs and Sediments in the Presence of

Regularities of the flocculation of kaolin suspension with cationic polyelectrolytes based on 1,2-dimethyl-5-vinylpyridinium methyl sulfate were studied by turbidimetry, optical microscopy, and sedimentation methods. It was found that poly(1,2-dimethyl-5-vinylpyridinium methyl sulfate)-co-N-vinylpirrolidone promotes the formation of dense flocs and provide a complete sedimentation of the

Effect of kaolin on floc properties for reactive orange

Kaolin had significant influence on magnesium hydroxide-reactive orange floc formation and growth. The results showed that average floc size reached 16.31, 12.88 and 20.50 μm, respectively, in the rapid mixer, flocculation basin and sedimentation tank when kaolin concentration was 10 mg/L and reactive orange initial concentration was 0.25 g/L.

Influence of pH, Electrolytes and Polymers on

2014-5-2  Kaolin was used as the model mineral in this flocculation study. Kaolin was obtained from Lampang Kaolin, the mineral dressing in the north of Thailand. The flocculants used in study were electrolytes (0.1 M NaCl and 0.1 M CaCl 2), low molecular weight, 25 ppm of polyvinyl alcohol (PVA) and high molecular weight polyacrylamide (PAM) . 2.2 Methods

A Study on the Flocculation and Sedimentation of Iron

Based on the flocculation–sedimentation tests, it was concluded that a recommended addition of 56 mg/L Fe 3+ at neutral pH produced a good regulating effect in terms of a surprisingly bad flocculation effect; this regulating behavior might be beneficial to

Application of F691 modified product in kaolin suspension

2021-11-4  (2) Experimental application of kaolin suspension flocculation. ① Liu Siqing used FQ-C to conduct flocculation experiments on kaolin suspension, and compared it with the flocculation performance of cationic polyacrylamide PAM-C . The experiment found that the flocculation produced by PAM-C flocculation is denser, and the effect is better than the former .

Experimental Analysis of Sedimentation Lab 5 Report

2020-12-17  Nr is a dimensionless parameter that has been found to be related to the nature of the flow around the particle. Experimental Analysis of Sedimentation Lab 5 Report. where Nr = Reynolds number, = density of fluid, = viscosity of the fluid, v = fluid or particle velocity, and d = diameter of particle.

Publication wme.rcees.ac

2020-9-20  Breakage and re-growth of flocs formed by charge neutralization using alum and polyDADMAC. Water Research, 2010, 44(13), 3959-3965. 83: Wenzheng Yu, John Gregory*, Luiza Campos. The effect of additional coagulant on the re-growth of alum-kaolin flocs. Separation and Purification Technology, 2010, 74, 305-309. 84

Effect of charge type and molecular weight of

Abstract】 <正>Although the synthetic organic polymers have been widely applied as flocculent aids to improve solid-liquid separation efficiency,it is not very clear how the charge type and molecular weight of the polymers influence the characteristics of flocs.In this paper,floc characteristics,such as floc size, density,structure,strength and reversibility were investigated in details

US3808021A Method of rapid differential flocculation of

2017-8-1  Treatment of reflocculated kaolin slurries with anionic, high molecular weight polymer flocs and settles a purified kaolin clay leaving titanium and iron contaminants in suspension. US3808021A Method of rapid differential flocculation of kaolin slurries Google Patents Method of rapid differential flocculation of kaolin slurries

Polyacrylamide-Treated Kaolin clay: A Fabric Study

flocs. Final sediment height tends to decrease with an increase in polyacrylamide concentration, indicating denser particle associations (face-to-face) and verified with scanning electron Figure B.9: Sedimentation time series for kaolin-PAM nanocomposite (120 mg·n-

Characterization of Flocs and Floc Size Distributions

2016-1-26  The analysis technique was applied to characterize flocs and floc particle size distribution as a function of coagulant dose. Removal of flocs by sedimentation was characterized by imaging, and the negative logarithm of the fraction of turbidity remaining after settling had a linear relationship with the logarithm of aluminum dose.

Coagulation and Sedimentation of Concentrated Laterite

2018-8-17  Coagulation and sedimentation performances of aluminum sulphate and ferric chloride were comparatively investigated in presence of Grewia spp. biopolymer for the treatment of concentrated laterite suspensions. Jar tests experiments were carried out at different laterite suspension concentrations (10, 20, and 30 g/L) and pH values (5 and 7).

A Study on the Flocculation and Sedimentation of Iron

Based on the flocculation–sedimentation tests, it was concluded that a recommended addition of 56 mg/L Fe 3+ at neutral pH produced a good regulating effect in terms of a surprisingly bad flocculation effect; this regulating behavior might be beneficial to

Experimental Analysis of Sedimentation Lab 5 Report

2020-12-17  Nr is a dimensionless parameter that has been found to be related to the nature of the flow around the particle. Experimental Analysis of Sedimentation Lab 5 Report. where Nr = Reynolds number, = density of fluid, = viscosity of the fluid, v = fluid or particle velocity, and d = diameter of particle.

Application of F691 modified product in kaolin suspension

2021-11-4  (2) Experimental application of kaolin suspension flocculation. ① Liu Siqing used FQ-C to conduct flocculation experiments on kaolin suspension, and compared it with the flocculation performance of cationic polyacrylamide PAM-C . The experiment found that the flocculation produced by PAM-C flocculation is denser, and the effect is better than the former .

Publication wme.rcees.ac

2020-9-20  Breakage and re-growth of flocs formed by charge neutralization using alum and polyDADMAC. Water Research, 2010, 44(13), 3959-3965. 83: Wenzheng Yu, John Gregory*, Luiza Campos. The effect of additional coagulant on the re-growth of alum-kaolin flocs. Separation and Purification Technology, 2010, 74, 305-309. 84

Experimental Analysis of Sedimentation Lab 5 Report

2021-4-1  sedimentation tanks for flocculent settling (primary sedimentation tanks) and that develop are called flocs. Chemicals called coagulants are often added to water prior Alum, Soda ash (Na2CO3), and kaolin, beakers and mixers for preparation of flocculent suspension (200-300 mg/L TSS) and sludge (approx. 2000 mg/L TSS).

Influence of Kaolin on the Formation and Sedimentation of

Li, J.; Xia, W.; Liu, L.; Zhang, M.; Zhao, B.; Liu, J.; Meng, M.; Zhao, Y., and Guo, J., 2020. Influence of kaolin on the formation and sedimentation of oil-colloidal

Flocculation of kaolin suspension with cationic polymer

Flocculation experiments have been carried out using cationic polymers and kaolin suspensions. The effects of polymer dosage, kaolin concentration, pH, agitation, molecular weight and charge density of polymer, concentration of polymer solution, and addition of inorganic salt were systematically examined. It was found that two optimal points of polymer dosage exist between 0 to 8 × 10−3 kg