• flocculation of cellular suspensions by polyelectrolytes

    Flocculation of cellular suspensions by polyelectrolytes

    2004-11-29· The regularities, kinetics and mechanisms of flocculation of Escherichia coli and B. thuringiensis var. israelensis (Bti) cellular suspensions by water-soluble polymers–and first of all cationic polyelectrolytes of different charge density and stiffness of the macromolecule chain have been investigated. The effect of the focculant dose and nature, its charge density, the hydrophobic

  • flocculation of cellular suspensions by polyelectrolytes

    Flocculation of cellular suspensions by polyelectrolytes

    Colloids and Surfaces, 31 (1988) 259-264 259 Elsevier Science Publishers B.V., Amsterdam Printed in The Netherlands Flocculation of Cellular Suspensions by Polyelectrolytes A.A. BARAN Institute of Colloid and Water Chemistry, Ukrainian Academy of Sciences, Vernadsky prospect 42, Kiev (U.S.S.R.) (Received 7 April 1987; accepted in final form 14 July 1987 ) In modern biotechnology many

  • flocculation of cellular suspensions by polyelectrolytes

    Flocculation of cellular suspensions by polyelectrolytes

    The regularities, kinetics and mechanisms of flocculation of Escherichia coli and B. thuringiensis var. israelensis (Bti) cellular suspensions by water-soluble polymers-and first of all cationic

  • flocculation of cellular suspensions by polyelectrolytes

    Flocculation of cellular suspensions by polyelectrolytes

    2004-11-29· Read "Flocculation of cellular suspensions by polyelectrolytes, Advances in Colloid and Interface Science" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • flocculation of cellular suspensions by polyelectrolytes

    Flocculation of cellular suspensions by polyelectrolytes

    The regularities, kinetics and mechanisms of flocculation of Escherichia coli and B. thuringiensis var. israelensis (Bti) cellular suspensions by water-soluble polymers-and first of all cationic polyelectrolytes of different charge density and stiffness of the macromolecule chain have been investigated.

  • flocculation of cellular suspensions by polyelectrolytes

    Flocculation of cellular suspensions by polyelectrolytes

    Flocculation of cellular suspensions by polyelectrolytes. Author links open overlay panel A.A. Baran. Show more

  • suspensions: flocculated suspensions:

    Suspensions: Flocculated suspensions:

    2010-11-01· Flocculated suspensions: Flocculation: It refers to the formation of a loose aggregation of discrete particles held together in a net-work like structure either by physical adsorption of macromolecules, bridging during chemical interaction or when the longer range Van-der Waal’s forces of attraction exceed the shorter range forces of repulsion.

  • flocculation of yeast suspensions by a cationic flocculant

    Flocculation of yeast suspensions by a cationic flocculant

    Suspensions of yeasts which are negatively charged have been flocculated using a cationic polyelectrolyte. The initial rate of flocculation and growth of the floc particles were dependent on the flocculant dosage and flocculation time. During flocculation, the cationic polyelectrolyte chains can adsorb via electrostatic interactions onto the

  • flocculation of yeast suspensions by a cationic flocculant

    Flocculation of yeast suspensions by a cationic flocculant

    Suspensions of yeasts which are negatively charged have been flocculated using a cationic polyelectrolyte. The initial rate of flocculation and growth of the floc particles were dependent on the

  • polyamphoteric flocculants for the enhanced separation

    Polyamphoteric flocculants for the enhanced separation

    The polyamphoteric flocculants consist of tunable, mixed charges dependent upon system pH, thereby providing strong electrostatic attraction to the diversely-charged surfaces of cellular suspensions. Enhanced flocculation efficiencies are achieved, as compared to cationic polyelectrolyte flocculants, and result from the ability of

  • effect of cationic polyelectrolytes on the kinetics

    EFFECT OF CATIONIC POLYELECTROLYTES ON THE KINETICS

    EFFECT OF CATIONIC POLYELECTROLYTES ON THE KINETICS OF FLOCCULATION OF CLAY MINERAL SUSPENSIONS AND STRENGTH OF FLOCS FORMED . S. BÁRÁNY1*, T. CAMBINO 2, A. CORREIRA, R. MÉSZÁROS1

  • flocculation of yeast suspensions by a cationic

    Flocculation of yeast suspensions by a cationic

    Suspensions of yeasts which are negatively charged have been flocculated using a cationic polyelectrolyte. The initial rate of flocculation and growth of the floc particles were dependent on the

  • deflocculation of cellulosic suspensions with anionic high

    Deflocculation of Cellulosic Suspensions with Anionic High

    flocculation can be controlled by adding, e.g., an anionic high molecular weight polyelectrolyte in the fiber suspension. The objective of this study was to investigate the effect of anionic polyelectrolytes on deflocculation kinetics, dewatering, and rheology of cellulosic suspensions. The results

  • flocculation of yeast suspensions by a cationic flocculant

    Flocculation of yeast suspensions by a cationic flocculant

    Suspensions of yeasts which are negatively charged have been flocculated using a cationic polyelectrolyte. The initial rate of flocculation and growth of the floc particles were dependent on the flocculant dosage and flocculation time. During flocculation, the cationic polyelectrolyte chains can adsorb via electrostatic interactions onto the

  • flocculation of clay colloids induced by model

    Flocculation of Clay Colloids Induced by Model

    General models of polyelectrolyte‐induced flocculation distinguish 1) polyelectrolyte bridging, 2) polyelectrolyte patching, and 3) depletion flocculation involving the free, desorbed polyelectrolyte chains in the suspension. 5-7 In real applications, a combination of such mechanisms is to occur, especially as the emerging approaches make use

  • polyamphoteric flocculants for the enhanced separation

    Polyamphoteric flocculants for the enhanced separation

    2016-08-01· Read "Polyamphoteric flocculants for the enhanced separation of cellular suspensions, Acta Biomaterialia" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • (pdf) flocculation of yeast suspension by a cationic

    (PDF) Flocculation of yeast suspension by a cationic

    The flocculation behavior of yeast cell suspensions at different times during the flocculation process is explained in terms of floc size, physicochemical surface characteristics of yeast and cell

  • suspensions: flocculated suspensions:

    Suspensions: Flocculated suspensions:

    2010-11-01· Flocculated suspensions: Flocculation: It refers to the formation of a loose aggregation of discrete particles held together in a net-work like structure either by physical adsorption of macromolecules, bridging during chemical interaction or when the longer range Van-der Waal’s forces of attraction exceed the shorter range forces of repulsion.

  • polyamphoteric flocculants for the enhanced separation

    Polyamphoteric flocculants for the enhanced separation

    The polyamphoteric flocculants consist of tunable, mixed charges dependent upon system pH, thereby providing strong electrostatic attraction to the diversely-charged surfaces of cellular suspensions. Enhanced flocculation efficiencies are achieved, as compared to cationic polyelectrolyte flocculants, and result from the ability of

  • the flocculation of kaolin aqueous dispersion deepdyve

    The flocculation of kaolin aqueous dispersion DeepDyve

    2017-02-20· Read "The flocculation of kaolin aqueous dispersion by two cationic polyelectrolytes, Colloids and Surfaces A: Physicochemical and Engineering Aspects" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • flocculation and redispersion of cellulosic

    FLOCCULATION AND REDISPERSION OF CELLULOSIC

    Cellulosic fibers in aqueous suspensions are subject to flocculation effects that involve two contrasting scales of dimension. The net effect of flocculation determines how uniformly fibers can become formed into a sheet during the manufacture of paper. At a macroscopic level, the highly elongated shape of typical wood-derived fibers in

  • polyamphoteric flocculants for the enhanced separation

    Polyamphoteric flocculants for the enhanced separation

    The polyamphoteric flocculants consist of tunable, mixed charges dependent upon system pH, thereby providing strong electrostatic attraction to the diversely-charged surfaces of cellular suspensions. Enhanced flocculation efficiencies are achieved, as compared to cationic polyelectrolyte flocculants, and result from the ability of

  • deflocculation of cellulosic suspensions with anionic high

    Deflocculation of Cellulosic Suspensions with Anionic High

    flocculation can be controlled by adding, e.g., an anionic high molecular weight polyelectrolyte in the fiber suspension. The objective of this study was to investigate the effect of anionic polyelectrolytes on deflocculation kinetics, dewatering, and rheology of cellulosic suspensions. The results

  • aggregation of suspensions by polyelectrolytes

    Aggregation of Suspensions by Polyelectrolytes

    Flocculation properties of some water-soluble cationic copolymers toward silica suspensions: A semiquantitative interpretation of the role of molecular weight and cationicity through a “patchwork” model. Journal of Colloid and Interface Science 1984, 97 (1),120-136. DOI: 10.1016/0021-9797(84)90280-7.

  • algal flocculation with synthetic organic polyelectrolytes

    Algal Flocculation with Synthetic Organic Polyelectrolytes

    with the optimal polyelectrolyte dose. Such a relationship for a cationic polyelectrolyte is shown in Fig. 2A; the optimal dose can be ob-served to occur at approximately 2.5 mg/liter. In accordance with this theory, the degree of flocculation will be determined by the extent to which the algal surface has been covered with polyelectrolyte

  • non ionic polyelectrolytes, polyelectrolyte flocculating

    Non Ionic Polyelectrolytes, Polyelectrolyte Flocculating

    They are used as aids flocculants in processes: flocculation of colloidal suspensions, grey water & waste water clarification, sludge dewatering, Flocculant for sludge floatation, discoloration of grey water etc. The polyelectrolytes act as the flocculants which eliminate & reduces the load of particles of liquid waste. We Manufacturers and supply range of non ionic Polyelectrolyte for

  • water treatment coagulation-flocculation general

    water treatment coagulation-flocculation general

    flocculation. This is when particles agglomerate (after having “been neutralised”) into micro-floc through bridging or assisted by hydroxides produced as the mineral coagulant hydrolyses or by means of the macromolecules in the cationic polyelectrolyte.Microfloc then comes together to form increasingly voluminous flakes that can settle, floc. This flocculation can be enhanced by adding

  • dye flocculation using polyampholytes

    Dye flocculation using polyampholytes

    Dye flocculation using polyampholytes and polyelectrolyte‐surfactant nanoparticles. Gudrun Petzold. Corresponding Author. E-mail address: [email protected] Leibniz‐Institut für Polymerforschung Dresden e.V., Hohe Straβe 6, 01069 Dresden, Germany

  • effect of polyelectrolyte structural features

    Effect of Polyelectrolyte Structural Features

    Summary: Growing demand for environmentally friendly technologies promotes the interest in investigation of natural flocculants and development of new ways of their derivatization aimed to find a compromise between cost, efficiency, and safety in polyelectrolyte applications. Recent progress in cationization of natural starch [T. Heinze et al., Macromol.

  • downstream processing of biopharmaceutical proteins

    Downstream processing of biopharmaceutical proteins

    2014-03-01· Importantly, these properties can also affect the recovery of the target protein and the overall safety profile of the process. We therefore used a design of experiments approach to establish reliable predictive models that characterize the impact of flocculants during the downstream processing of biopharmaceutical proteins. We highlight

  • deflocculation of cellulosic suspensions with anionic high

    Deflocculation of Cellulosic Suspensions with Anionic High

    flocculation can be controlled by adding, e.g., an anionic high molecular weight polyelectrolyte in the fiber suspension. The objective of this study was to investigate the effect of anionic polyelectrolytes on deflocculation kinetics, dewatering, and rheology of cellulosic suspensions. The results

  • us patent # 4,906,386. flocculation of coal fines with

    US Patent # 4,906,386. Flocculation of coal fines with

    Flocculation of coal fines with polyelectrolytes and electrolyte Abstract. Coal fines are flocculated from an aqueous suspension by adding an anionic polyelectrolyte, a soluble calcium salt, and a cationic polyelectrolyte to the suspension. The anionic polyelectrolyte is preferably a high charge density, high molecular weight acrylic acid

  • coagulations and flocculation water treatment suez

    Coagulations and Flocculation Water Treatment SUEZ

    Coagulation and flocculation water treatment chemicals are used to remove iron, suspended solids, organic color, and hardness from influent water. In wastewater treatment these clarification aids help with the removal of other contaminants such as oil, phosphate and heavy metals. For raw water applications, polymer products help to eliminate

  • removal of suspended solids from dairy wastewater

    REMOVAL OF SUSPENDED SOLIDS FROM DAIRY WASTEWATER

    flocculation, nanofiltration, reverse osmosis and membrane processes are used for the treatment of suspended and colloidal particles in wastewater and to decrease the turbidity [7]. Flocculation is considered as one of the important method for the removal of suspended matter from wastewater. Flocculation is a process where flocculants gets

  • coagulation and flocculation in water and wastewater

    Coagulation and Flocculation in Water and Wastewater

    Coagulation and Flocculation in Water and Wastewater Treatment. Coagulation and flocculation are an essential part of drinking water treatment as well as wastewater treatment. This article provides an overview of the processes and looks at the latest thinking.

  • flocculation of suspensions by polyelectrolyte mixtures

    Flocculation of Suspensions by Polyelectrolyte Mixtures

    Flocculation of Suspensions by Polyelectrolyte Mixtures S. Bárány1*, R. Meszaros1 and J. Skvarla2 1 University of Miskolc, 3515 Miskolc-Egyetemvaros, Hungary 2Technical University of Kosice, Kosice, Letna str. 9, Slovakia * e-mail: [email protected] Polymers are widely used as flocculants for suspensions in many industrial applications, such

  • drinking water snf holding company

    DRINKING WATER SNF Holding Company

    king water production by direct filtration and weighted flocculation is discussed. Presently, the whole or partial replacement of inorganic coagulant by cationic polyelectrolyte can improve drinking water treatment processes. The areas of application for organic coagulants include the following: clarification by settling flotation

  • clarification / flocculation wyeast laboratories

    Clarification / Flocculation Wyeast Laboratories

    A hazy beer is commonly blamed on yeast that will not settle, but that is one of several possibilities. Yeast does not stay in suspension without help. To get an idea of the complexities involved in clarification, we will look at several factors that affect yeast flocculation, but first we will define flocculation. Flocculation:

  • effect of polyelectrolyte mixtures on the electrokinetic

    Effect of polyelectrolyte mixtures on the electrokinetic

    The effect of binary mixtures of cationic and anionic electrolytes on the kinetics of aggregation, size and strength of flocs formed from kaolin and bentonite particles as a function of the polymer dose, mixture composition, sequence of the components addition and intensity of stirring the system has been studied.

  • downstream processing of biopharmaceutical proteins

    Downstream processing of biopharmaceutical proteins

    2014-03-01· Importantly, these properties can also affect the recovery of the target protein and the overall safety profile of the process. We therefore used a design of experiments approach to establish reliable predictive models that characterize the impact of flocculants during the downstream processing of biopharmaceutical proteins. We highlight

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