• characterization of kaolin flocs formed by polyacrylamide

    Characterization of kaolin flocs formed by polyacrylamide

    Characterization of kaolin flocs formed by polyacrylamide as flocculation aids. Meanwhile, cationic PAM can form flocs with larger size than anionic PAM due to the contribution of both charge neutralization and bridging. Floc density was affected by molecular weight dramatically when using anionic PAM. For a given floc size, the density increased with molecular weight. As comparing, in the

  • characterization of kaolin flocs formed by polyacrylamide

    Characterization of kaolin flocs formed by polyacrylamide

    Request PDF Characterization of kaolin flocs formed by polyacrylamide as flocculation aids Although the synthetic organic polymers have been widely applied as flocculant aids to improve solid

  • characterization of kaolin flocs formed by polyacrylamide

    Characterization of kaolin flocs formed by polyacrylamide

    For a given floc size, the density increased with molecular weight. Furthermore, flocs formed by cationic PAM showed much greater shear-resistant ability and reversibility than anionic PAM. Nevertheless, the poor reversibility of the flocs formed by high molecular weight was also observed. An explanation for the resultant floc characteristics

  • characterization of kaolin flocs formed by polyacrylamide

    Characterization of kaolin flocs formed by polyacrylamide

    2009-05-16· Read "Characterization of kaolin flocs formed by polyacrylamide as flocculation aids, International Journal of Mineral Processing" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • characterization of kaolin flocs formed by polyacrylamide

    Characterization of kaolin flocs formed by polyacrylamide

    Characterization of kaolin flocs formed by polyacrylamide as flocculation aids . By Zhe Zhu, Tao Li, Jiajuan Lu, Dongsheng Wang and Chonghua Yao. Abstract. Although the synthetic organic polymers have been widely applied as flocculant 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

  • characterization of kaolin flocs formed by polyacrylamide

    Characterization of kaolin flocs formed by polyacrylamide

    三峡大学,Project MUSE期刊数据库, EBSCO BSU数据库 ,中国地区经济发展报告库,森途IT在线学习资源库,智立方(知识发现系统)

  • characterization of flocs generated by preformed and

    Characterization of flocs generated by preformed and

    Although AC was usually used to compare with PACl on their coagulation behavior on particulate or NOM removal, few researches have focused on the difference in flocs properties between the two coagulants. Moreover, the surface and structure character of the flocs generated by in situ formed Al 13 polymer remained to be clarified.

  • characterization and application of poly-ferric-titanium

    Characterization and application of poly-ferric-titanium

    It could be seen that the flocs in both DB and RY wastewater formed by PFTS had larger breakage factors and smaller recovery factors when compared with the flocs formed by T-PSF. Similar result was obtained by previous study which studied the effect of polysilicic acid on the floc formed by titanium salt (Huang et al., 2016).

  • zhe zhu's research works east china university

    Zhe Zhu's research works East China University

    Zhe Zhu's 4 research works with 399 citations and 225 reads, including: Characterization of kaolin flocs formed by polyacrylamide as flocculation aids

  • flocculation of kaolin particles with cationic lignin

    Flocculation of kaolin particles with cationic lignin

    2019-02-25· The hydrodynamic diameter of kaolin particles and flocs of KLD/kaolin was measured by a particle size analyzer, MasterSizer 2000 (Malvern Instruments).

  • synthesis, characterization and flocculation activity

    Synthesis, characterization and flocculation activity

    2011-11-01· The electrostatic interaction between the Fe(OH) 3 colloid core and the negative kaolin particles in suspension as well as the adsorption or bridging action between the polyacrylamide arms and particles of kaolin are believed to be the mechanism for Fe(OH) 3 –polyacrylamide hybrid polymer when it was dosed into the kaolin suspension. Strong

  • effect of template on structure and properties of cationic

    Effect of Template on Structure and Properties of Cationic

    The precipitated flocs were mainly in crystalline form. View Show abstract Template Polymerization of a Novel Cationic Polyacrylamide:Sequence Distribution, Characterization, and Flocculation

  • characterization of alum floc by image analysis

    Characterization of Alum Floc by Image Analysis

    2000-08-09· In-situ monitoring of particle characteristics is of general interest for both natural and engineered aquatic systems and of particular interest in studying the fragile floc that typically is formed by the addition of chemical coagulants. A nonintrusive photographic technique coupled with digital image processing for in-situ analysis of aggregates formed by the addition of alum [Al2(SO4)3

  • chonghua yao's research works east china university

    Chonghua Yao's research works East China University

    Chonghua Yao's 3 research works with 335 citations and 206 reads, including: Characterization of kaolin flocs formed by polyacrylamide as flocculation aids

  • synthesis and characterization of different molecular

    Synthesis and Characterization of Different Molecular

    Synthesis and Characterization of Different Molecular Weights Polyacrylamide bigger and stronger flocs to be formed. The increased floc strength can improve settling characteristics. Synthetic organic polyelectrolytes are known to be more efficient than the inorganic electrolytes agents in the removal of suspended colloidal particles (3). The effectiveness of synthetic organic

  • an effective flocculation method to the kaolin wastewater

    An Effective Flocculation Method to the Kaolin Wastewater

    And under the bridging effect of PAD-1, the destabilized particles were tightly absorbed on the PAD-1 polymer chain to form large and compact flocs . Meanwhile, the kaolin wastewater conditioned by the PAD-1 will form a more condensed structure which benefits the separation of the kaolin particles from the water. The possible flocculation

  • enhancement of dewatering properties of kaolin

    Enhancement of Dewatering Properties of Kaolin

    Enhancement of Dewatering Properties of Kaolin Suspension by Using Cationic Polyacrylamide (PAM-C) Flocculant and Surfactants. Jabir Hussain, Mohammed Saedi Jami, Suleyman Aremu Muyibi

  • production, characterization, and flocculation

    Production, Characterization, and Flocculation

    2014-12-08· Between 200–300 µm flocs were formed by the ETH-2 strain when tested for kaolin clay flocculation (Figure 7b), indicating its advantage on flocculation. The purified bioflocculant ETH-2 also formed 100–200 µm flocs during kaolin clay flocculation testing (Figure 7c), larger than flocs formed by Bacillus megaterium TF10 (20–30 µm) .

  • breakage, regrowth, and fractal nature of natural organic

    Breakage, Regrowth, and Fractal Nature of Natural Organic

    The growth, breakage, regrowth, and fractal nature of flocs was investigated by use of a laser diffraction particle sizing device. A range of coagulants were investigated for the coagulation of natural organic matter (NOM) and compared to other coagulated systems. The results showed NOM floc structural characteristics varied in steady-state size depending upon which coagulant was used.

  • flocculation of flotation tailings in presence of silicate

    Flocculation of flotation tailings in presence of silicate

    2018-08-13· The results obtained reveal that 1) sodium silicate gel, used as a binder for the consolidation of tailings form primary flocs, acts as an anchor and the adsorption of polymer flocculant on these anchors results in the formation of larger flocs and, consequently, enhanced settling rate; 2) flocculation in the presence of silica gel and polymer

  • novel, rosin‐based, hydrophobically modified cationic

    Novel, rosin‐based, hydrophobically modified cationic

    Furthermore, these particles aggregated via regional static electricity and formed long molecular chains of HMPAM via bridging effects and hydrophobic associations to form larger flocs. 39 However, in an alkaline environment, OH − neutralized the positive charges of flocculants, and charge neutralization exhibited an auxiliary role. Kaolin

  • breakage and regrowth of flocs formed by springerlink

    Breakage and regrowth of flocs formed by SpringerLink

    The breakage and regrowth of flocs formed by sweep flocculation were investigated on different flocculation mechanisms using additional dosage coagulant of poly aluminium chloride (PACl) and non-ionic polyacrylamide (PAM) to explore the reversibility after floc breakage. The optimal dosage of PACl was 0.15 mM (as alum), and zeta potential exceeding 1 mV meant that sweep flocculation was

  • effect of template on structure and properties of cationic

    Effect of Template on Structure and Properties of Cationic

    Effect of the Cationic Block Structure on the Characteristics of Sludge Flocs Formed by Charge Neutralization and Patching. Materials 2017, 10 (5),487. DOI: 10.3390/ma10050487. Jiangya Ma, Jun Shi, Houcheng Ding, Guocheng Zhu, Kun Fu, Xue Fu.

  • characterization of kaolin flocs formed by polyacrylamide

    Characterization of kaolin flocs formed by polyacrylamide

    For a given floc size, the density increased with molecular weight. Furthermore, flocs formed by cationic PAM showed much greater shear-resistant ability and reversibility than anionic PAM. Nevertheless, the poor reversibility of the flocs formed by high molecular weight was also observed. An explanation for the resultant floc characteristics

  • the modern characterization techniques for flocs

    the modern characterization techniques for flocs

    In addition, modern characterization techniques of flocs properties have been developed. Flocs are easily destroyed during the transfer or measurement process, so the characterization techniques of flocs size or flocs size distribution (FSD) are mainly divided into two types: sampling techniques and in situ techniques. Sampling techniques

  • synthesis and characterization of different molecular

    Synthesis and Characterization of Different Molecular

    Synthesis and Characterization of Different Molecular Weights Polyacrylamide bigger and stronger flocs to be formed. The increased floc strength can improve settling characteristics. Synthetic organic polyelectrolytes are known to be more efficient than the inorganic electrolytes agents in the removal of suspended colloidal particles (3). The effectiveness of synthetic organic

  • characterization of re-grown floc size and structure

    Characterization of re-grown floc size and structure

    2016-09-13· The impact of mixing speed in three stages—before breakage, during breakage, and after breakage—on re-grown floc properties was investigated by using a non-intrusive optical sampling and digital image analysis technique, respectively. And then, on the basis of different influence extent of mixing speed during each stage on size and structure of re-grown flocs, coagulation performance with

  • synthesis and characterization of poly(acrylamide-co

    Synthesis and Characterization of Poly(Acrylamide-Co

    in the most cases, the flocs formed during flocculation by organic polymers are bigger and stronger than during coagulation with inorganic salts. Moreover, large tonnage use of inorganic compounds produces higher volumes of sludge. Among polymeric flocculants, the synthetic polymers can be tailor made by controlling molecular weight, molecular

  • effect of template on structure and properties of cationic

    Effect of Template on Structure and Properties of Cationic

    In this study, a cationic block structure with a strong neutralizing ability was formed through template polymerization. Acryloxyethyltrimethyl ammonium chloride (DAC) and acrylamide (AM) were used as monomers, and the ionic homopolymer sodium polyacrylate (NaPAA) was used as the template. The product containing NaPAA after template polymerization is denoted as NTP, whereas the copolymer

  • effect of dosing sequence and solution ph on floc

    Effect of dosing sequence and solution pH on floc

    2012-06-01· The compound bioflocculant (CBF)–aluminum sulfate (AS) dual-coagulant and AS were comparatively studied for the coagulation of kaolin–humic acid solution. Floc properties including floc growth rate, size, strength, recoverability and fractal dimension under different pH conditions were investigated by Mastersizer 2000. Results indicated that, the flocs formed by AS–CBF (AS dosed first

  • optimized synthesis of polyacrylamide (pam) with

    Optimized synthesis of polyacrylamide (PAM) with

    References. V.H. Dao, N.R. Cameron, K. Saito, Synthesis, properties and performance of organic polymers employed in flocculation applications, Polym.

  • synthesis and characterization of poly(acrylamide-co

    Synthesis and Characterization of Poly(Acrylamide-Co

    The extensive use of polymers as flocculants is due to their distinct characteristic attributes: are convenient to use and they not affect the pH of the medium, they are used in small quantities (1-5ppm) unlike the inorganic salts and, in the most cases, the flocs formed during flocculation by organic polymers are bigger and stronger than

  • the effect of polyacrylamide on floc structure of typical

    The Effect of Polyacrylamide on Floc Structure of Typical

    Based on that floc structure is an important factor that influencing the coagulation effect and the post-treatment load, the effect of PAM on floc structure of typical system is analyzed and evaluated in this paper. The results show that PAM has a notable influence on floc morphological structure characteristics. For inorganic turbid system, the fractal dimension and diameter of kaolin flocs

  • the modern characterization techniques for flocs

    the modern characterization techniques for flocs

    In addition, modern characterization techniques of flocs properties have been developed. Flocs are easily destroyed during the transfer or measurement process, so the characterization techniques of flocs size or flocs size distribution (FSD) are mainly divided into two types: sampling techniques and in situ techniques. Sampling techniques

  • experimental and numerical characterization of floc

    Experimental and numerical characterization of floc

    2015-10-21· The formation, breakage, and re-growth of flocs were investigated by using modified flocculation tests and numerical simulation to explore the evolution of floc morphology for different hydraulic retention times. The shorter the aggregation time was, the smaller the flocs produced for the same hydraulic conditions were. Another interesting

  • extraction, characterization and application of malva nut

    Extraction, characterization and application of malva nut

    For kaolin particles, like the colloids in water, it has a negative charge on the surface of particles. After the cation is added, it reduces the surface charges on particles with its positive charge, thus forming micro-flocs during collisions. However, the flocs formed may not be dense enough to settle or may form only a small amount of

  • coagulation performance and floc properties

    Coagulation performance and floc properties

    2011-09-15· Read "Coagulation performance and floc properties of compound bioflocculant-aluminum sulfate dual-coagulant in treating kaolin-humic acid solution, Chemical Engineering Journal" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • simulation of particle size in flocculation hydrodynamic

    Simulation of Particle Size in Flocculation Hydrodynamic

    Numerous sets of experimental data were obtained by employing the available facilities and procedures for kaolin-Fe(3+) and kaolin-polyacrylamide flocs. The test aggregates were formed from a dispersed phase of colloidal kaolin in a baffled, stirred tank with a volumetric capacity of 13.25 liters. Agitation was provided by a flat-bladed turbine

  • synergetic effects and flocculation behavior of anionic

    Synergetic effects and flocculation behavior of anionic

    2015-01-01· Read "Synergetic effects and flocculation behavior of anionic polyacrylamide and extracellular polymeric substrates extracted from Klebsiella sp. J1 on improving soluble cadmium removal, Bioresource Technology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • study on adsorption of inorganic-organic hybrid polymers

    Study on Adsorption of Inorganic-organic Hybrid Polymers

    model tailings (5 wt% kaolin suspensions) and laboratory extraction tailings. For comparison, a commercial anionic flocculant, partially hydrolyzed polyacrylamide or Magnafloc 1011 (MF 1011), was also examined. Moreover, a fundamental understanding on flocculation dynamics of model and laboratory extraction tailings by different polymers as well as adsorption kinetics of these polymers on

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