the application of polyacrylamide in mining

Estimation of flocculation structure in filled polymer

Quantitative calculations in order to determine the flocculation structure were carried out by means of the modified Kerner equation. A plot of the calculated value, defined as the floc index A, dependence of electrical resistivity for various systems was found to be a universal curve.

This method is particularly effective for estimating the flocculation structure of ultra-fine-particle-filled polymer composites no matter whether the filler is conductive or not. Abstract The frequency and concentration dependences of the storage modulus (G′) for carbon black and short-carbon-fiber-filled polymer composites were investigated

Estimation of flocculation structure in filled polymer

Abstract. The performance of elastomeric materials, i.e. in car tires, is substantially determined by the used reinforcing filler system. In particular, the flocculation tendency of filler particles to form clusters and even network-like structures significantly determines the mechanical properties of these elastomer materials and enhances

Jan 1, 2005 · Many polymers used for flocculation are natural in origin (proteins, gums, starch, tannins, and alginates), but recently, synthetic polymers have proved successful, and these are often based on polyacrylamide. They have a range of molecular weight (about 10 5 –10 6) with fairly well defined degrees of anionic, cationic, or nonionic characters

Water Soluble Polymer Flocculants: Synthesis

Water soluble polymer flocculants are important constituents of solid–liquid separation units for the treatment of a variety of process-affected effluents. The systematic development of a flocculant relies on a good understanding of flocculation process, polymer synthesis, polymer characterization, and,

Estimation of flocculation structure in filled polymer

Abstract The frequency and concentration dependences of the storage modulus (G′) for carbon black and short-carbon-fiber-filled polymer composites were investigated by means of dynamic rheological measurements. It was found that G′ at low frequencies and amplitudes could be used as a sensitive experimental parameter for detecting the flocculation structure of the ultra-fine-particle-filled

Chapter 7 Flocculation with polymers - ScienceDirect

A hydrophobic monomer can also be added to the polymer structure for the flocculation of organics in the oily wastewater. Yang et al. synthesized a cationic terpolymer with DADMAC, acrylamide, and butylacrylate (BA) monomers. They showed that the presence of BA, as a hydrophobic monomer, improved the flocculation ability of the polymer.

Filler flocculation in polymers - Semantic Scholar

A review of flocculation for bacteria using polymers also provides a good overview of the mechanisms. 41 In 2006, Ferrari and colleagues presented a calcium carbonate flocculation method for concentration of pathogens from industrial wastewaters. 42 They stressed the need for internal controls given the highly variable recovery rates observed.

Structure of Colloidal Flocs in relation to the Dynamic

Abstract. Dynamic behaviors of unstable colloidal dispersions are reviewed in terms of floc formation. Geometrical structure of flocs in terms of chemical conditions and formation mechanics is a key to predict macroscopic transportation properties. The rate of sedimentation and rheological properties can be described with the help of fractal

pH dependence of bentonite aggregate size and morphology on

The properties of rubber are strongly influenced by the distribution of filler within the polymer matrix. Here, we introduce a Monte Carlo-based morphology generator. The basic elements of our model are cubic cells, which, in the current version, can be either silica filler particles or rubber volume elements in adjustable proportion. The model allows the assignment of surface free energies to

Estimation of flocculation structure in filled polymer

Abstract The frequency and concentration dependences of the storage modulus (G′) for carbon black and short-carbon-fiber-filled polymer composites were investigated by means of dynamic rheological measurements. It was found that G′ at low frequencies and amplitudes could be used as a sensitive experimental parameter for detecting the flocculation structure of the ultra-fine-particle-filled

Water Soluble Polymer Flocculants - Wiley Online Library

The performance of flocculants is often assessed by macroscopic metrics such as hindered settling rate, supernatant turbidity, capillary suction time, filtration resistance, and other macroscopic methods.

Structure of Colloidal Flocs in relation to the Dynamic

It is also well known that the application of water soluble polymers and polyelectrolytes, which are usually used as a conditioner or flocculants in colloidal dispersions, critically affects the process of flocculation. The resulted floc structure is also influenced by the application of polymer.

Flocculation - Wikipedia

In civil engineering, and in the earth sciences, flocculation is a condition in which clays, polymers or other small charged particles become attached and form a fragile structure, a floc. In dispersed clay slurries , flocculation occurs after mechanical agitation ceases and the dispersed clay platelets spontaneously form flocs because of

Recent Achievements in Polymer Bio-Based Flocculants for

The properties of rubber are strongly influenced by the distribution of filler within the polymer matrix. Here, we introduce a Monte Carlo-based morphology generator. The basic elements of our model are cubic cells, which, in the current version, can be either silica filler particles or rubber volume elements in adjustable proportion.

Screening and evaluation of polymers as ?occulation aids for

a further evaluation of six polymers was conducted to estimate the optimum polymer dosage for ?occulation of aquaculture microscreen ef?uent and overall solids removal ef?ciency. Results of these evaluations show TSS removal was close to 99% via settling, with ?nal TSS values ranging from as low as 10–17 mg/L.

Properties and flocculation efficiency of cationized

The polymer needed for flocculation was 1.5-fold higher for the polymer D than for the polymer H. Drainage and Flocculation Efficiency in Papermaking The effect of polymer additions on free water removal rate from the furnish was analysed by measuring cumulative mass of the filtrate as a function of time during the dewatering process (Fig. 6).