• flocculation of both anionic and cationic dyes in aqueous

    Flocculation of both anionic and cationic dyes in aqueous

    2013-06-15· A series of amphoteric grafting flocculants (CMC-g-PAM) was prepared.Flocculation of both anionic and cationic dyes by CMC-g-PAM was studied.The flocculation mechanism of CMC-g-PAM was discussed in detail.The grafted PAM contributed much to the bridging and sweeping flocculation effects.

  • flocculation of both anionic and cationic dyes in aqueous

    Flocculation of both anionic and cationic dyes in aqueous

    Flocculation of both anionic and cationic dyes in aqueous solutions by the amphoteric grafting flocculant carboxymethyl chitosan-graft-polyacrylamide

  • flocculation of both anionic and cationic dyes in aqueous

    Flocculation of both anionic and cationic dyes in aqueous

    Among different graft copolymers, CMC-g-PAM11 with a PAM grafting ratio of 74% demonstrated the most efficient performance for removal of both the anionic dye (Methyl Orange, MO) and the cationic dye (Basic Bright Yellow, 7GL) under the corresponding favored conditions (80 mg/L of the flocculant at pH 4.0, and 160 mg/L at pH 11.0). In

  • removal of anionic dyes in aqueous solution

    Removal of anionic dyes in aqueous solution

    In addition, in order to determine the mechanism of interaction between CAm and the anionic dyes during flocculation, we investigated the flocculation behavior of CAm towards Acid Red 9 (AR9), AR13, and Acid Blue 92 (AB92) anionic dyes, which contain 1–3 anionic sulfone groups per molecule, respectively (Fig. 1(B)).

  • coagulation and flocculation of dye-containing solutions

    Coagulation and flocculation of dye-containing solutions

    Chitosan, dissolved in acetic acid, was used for the coagulation–flocculation of an anionic dye (Reactive Black 5). In acidic solutions protonated amine groups of chitosan attract dye sulfonic groups. Increasing chitosan dosage increases dye removal up to a concentration resulting in complete neutralization of anionic charges; above, the

  • flocculation of both anionic and cationic dyes in aqueous

    Flocculation of both anionic and cationic dyes in aqueous

    2013-07-01· Flocculation of both anionic and cationic dyes in aqueous solutions by the amphoteric grafting flocculant carboxymethyl chitosan-graft-polyacrylamide.

  • (pdf) degradation of cationic and anionic dyes

    (PDF) Degradation of cationic and anionic dyes

    Degradation of cationic and anionic dyes in coagulation–flocculation process using bi-functionalized silica hybrid with aluminum-ferric as auxiliary agent

  • removal of anionic dyes in aqueous solution

    Removal of anionic dyes in aqueous solution

    The flocculation behavior of these anionic dyes followed the Langmuir adsorption isotherm model, which revealed the maximum flocculation capacity of a CAm for these dyes

  • modeling and optimization of the flocculation processes

    Modeling and optimization of the flocculation processes

    Abstract. In this study, an amphoteric grafting chitosan-based flocculant (carboxymethyl chitosan-graft-poly(2-methacryloyloxyethyl) trimethyl ammonium chloride, denoted as CMC-g-PDMC) was applied to removal of the anionic and cationic dyes, acid Green 25 (AG25) and Basic Bright Yellow (7GL), from water.Flocculation conditions have been optimized by response surface methodology (RSM) on the

  • efficient flocculation of an anionic dye from aqueous

    Efficient flocculation of an anionic dye from aqueous

    CMC-g-PDMC bears high flocculation performance in removal of an anionic dye, Acid Green 25 (AG25), at various pH conditions, which is due to improvement of both positive charge and molecular weight after modification. Moreover, the dye removal efficiency is mostly improved with the increase of

  • efficient flocculation of an anionic dye from aqueous

    Efficient flocculation of an anionic dye from aqueous

    CMC-g-PDMC bears high flocculation performance in removal of an anionic dye, Acid Green 25 (AG25), at various pH conditions, which is due to improvement of both positive charge and molecular

  • anionic polymer flocculation chemicals for ink, dye

    Anionic Polymer Flocculation Chemicals for Ink, Dye

    Anionic Polymer Flocculation Chemicals for Ink, Dye, & Paint Wastewater Treatment. If you’re involved in ink, dye, or paint wastewater treatment, flocculation is probably a major part of your wastewater process. And to produce quality waste effluent, your ink, paint, and dyes wastewater needs an advanced treatment with specialty chemicals

  • evaluation of the flocculation and de-flocculation

    Evaluation of the flocculation and de-flocculation

    The flocculation process may be relatively complicated. The removal of dye involves the physical and chemical interaction between flocculants and dye molecules surfaces, such as electric

  • degradation of cationic and anionic dyes in coagulation

    Degradation of cationic and anionic dyes in coagulation

    degradation of both dyes were pH 2 at which the dye colloids +,))).)))) and. Degradation of cationic and anionic dyes in coagulation–flocculation process using bi-functionalized silica hybrid

  • coagulation and electrocoagulation of wastes polluted

    Coagulation and Electrocoagulation of Wastes Polluted

    2006-09-08· Flocculation of both anionic and cationic dyes in aqueous solutions by the amphoteric grafting flocculant carboxymethyl chitosan-graft-polyacrylamide. Journal of Hazardous Materials 2013, 254-255, 36-45. DOI: 10.1016/j.jhazmat.2013.03.053.

  • synthesis of strongly cationic hydrophobic springerlink

    Synthesis of strongly cationic hydrophobic SpringerLink

    2016-12-26· The water-soluble anionic dyes could be removed from the water phase by forming flocculation precipitations with strongly cationic units in the main chains of HC-PDMDAAC through electrostatic interactions, and suitable contents of hydrophobic groups of HC-PDMDAACs further reduced the water solubility of those precipitations, causing a shift in

  • frontiers evaluation of anionic and cationic pulp-based

    Frontiers Evaluation of Anionic and Cationic Pulp-Based

    2020-01-30· In general, performance in flocculation was better when working in acidic conditions, for both the cationic and anionic bio-PELs. This is typical of flocculation processes applied to dye containing waste waters (Zemaitaitiene et al., 2003; Gao et al., 2007).

  • coagulation/flocculation process for dye removal using

    Coagulation/Flocculation Process for Dye Removal Using

    Among these dyes, tartrazine is an orange monoazo and anionic dye, widely used as additive in textiles, cosmetics, food industries and whose effects on human beings are multiple and redoubtable in

  • decolorization of anionic dye solutions using the

    Decolorization of anionic dye solutions using the

    2014-10-01· Read "Decolorization of anionic dye solutions using the hydrophobically modified polyelectrolytes containing beta-cyclodextrin moieties, Chemical Engineering Journal" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • anionic polymer flocculation chemicals for ink, dye

    Anionic Polymer Flocculation Chemicals for Ink, Dye

    Anionic Polymer Flocculation Chemicals for Ink, Dye, & Paint Wastewater Treatment. If you’re involved in ink, dye, or paint wastewater treatment, flocculation is probably a major part of your wastewater process. And to produce quality waste effluent, your ink, paint, and dyes wastewater needs an advanced treatment with specialty chemicals

  • coagulation and electrocoagulation of wastes polluted

    Coagulation and Electrocoagulation of Wastes Polluted

    2006-09-08· Flocculation of both anionic and cationic dyes in aqueous solutions by the amphoteric grafting flocculant carboxymethyl chitosan-graft-polyacrylamide. Journal of Hazardous Materials 2013, 254-255, 36-45. DOI: 10.1016/j.jhazmat.2013.03.053.

  • modeling and optimization of the flocculation processes

    Modeling and optimization of the flocculation processes

    View This Abstract Online; Modeling and optimization of the flocculation processes for removal of cationic and anionic dyes from water by an amphoteric grafting chitosan-based flocculant using response surface methodology.

  • frontiers evaluation of anionic and cationic pulp-based

    Frontiers Evaluation of Anionic and Cationic Pulp-Based

    2020-01-30· In general, performance in flocculation was better when working in acidic conditions, for both the cationic and anionic bio-PELs. This is typical of flocculation processes applied to dye containing waste waters (Zemaitaitiene et al., 2003; Gao et al., 2007).

  • synthesis and flocculation property in dye deepdyve

    Synthesis and flocculation property in dye DeepDyve

    2012-02-14· The flocculation properties of the copolymer were evaluated by the decolorization solutions of two reactive dyes using a jar test method. The decolorization efficiency is influenced by both the nature of the anionic dyes and the pH of the initial dye solution. Electrostatic adsorption played a more important role in flocculation of dyes than

  • degradation of cationic and anionic dyes in coagulation

    Degradation of cationic and anionic dyes in coagulation

    Cationic dye (methylene blue) and anionic dye (methyl orange) degradation in the coagulation process was demonstrated. The key material was a natural coagulant–laterite soil dominated by a silica component, while aluminum-ferric ions acted as an auxiliary agent in the degradation process.

  • removal of an anionic dye (acid blue 92) by deepdyve

    Removal of an anionic dye (Acid Blue 92) by DeepDyve

    2009-07-01· Read "Removal of an anionic dye (Acid Blue 92) by coagulation–flocculation using chitosan, Journal of Environmental Management" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • effects of different conditions on the removal of dye

    Effects of Different Conditions on the Removal of Dye

    flocculation, reactive dye, wastewater I. INTRODUCTION Coagulation-flocculation is an important unit operation in the industries for wastewater treatment and sludge dewatering [1-3]. Coagulation of dissolved and colloidal substances in wastewater is explained by Derjaguin Landau Verwey Overbeen theory (DLVO theory) whereby coagulation is a process that overcomes the interparticle

  • effect of hydrolysis degree of hydrolyzed polyacrylamide

    Effect of hydrolysis degree of hydrolyzed polyacrylamide

    2013-07-27· In this present work, a series of hydrolyzed polyacrylamide grafted carboxymethyl cellulose (CMC-g-HPAM) was prepared.The structure and solution properties of CMC-g-HPAM were characterized by FTIR, 1 H-NMR, elemental analysis and zeta potential measurements.The graft copolymers were applied as flocculants to remove methylene blue (MB), a cationic dye, from aqueous

  • sewage polluted water treatment via chitosan: a review

    Sewage Polluted Water Treatment via Chitosan: A Review

    Dyes as adsorbate are usually classified with regard to their charge, succeeding dissolution in water. There are cationic (basic) dyes, reactive (acidic dyes), and non-ionic (dispersed) dyes. The adsorption of anionic dyes is a property originally derived by native CS due to the cationic character at low pH values. Electrostatic interactions

  • synthesis and flocculation property in dye deepdyve

    Synthesis and flocculation property in dye DeepDyve

    2012-02-14· The flocculation properties of the copolymer were evaluated by the decolorization solutions of two reactive dyes using a jar test method. The decolorization efficiency is influenced by both the nature of the anionic dyes and the pH of the initial dye solution. Electrostatic adsorption played a more important role in flocculation of dyes than

  • synthesis of strongly cationic hydrophobic springerlink

    Synthesis of strongly cationic hydrophobic SpringerLink

    2016-12-26· The water-soluble anionic dyes could be removed from the water phase by forming flocculation precipitations with strongly cationic units in the main chains of HC-PDMDAAC through electrostatic interactions, and suitable contents of hydrophobic groups of HC-PDMDAACs further reduced the water solubility of those precipitations, causing a shift in

  • surface flocculation as a new tool for controlling

    Surface Flocculation as a New Tool for Controlling

    Surface Flocculation for Controlling Adsorption Processes 887 Ł Coagulation or flocculation of particles in solution using a flocculating agent followed by adsorption. This is a well-known process (see Figure 2). Ł Adsorption of dye molecules on specific sites which are incapable of further adsorption after saturation (Rattee and Breuer 1974

  • coagulation/flocculation of dye-containing solutions

    Coagulation/flocculation of dye-containing solutions

    The maximum dye removal occurred when pH was 7 and 5 for PAC and alum, respectively. Both coagulants efficiently removed the dye (about 85%) with a relatively low dosage (40 mg/l) in their optimum pH range. By adding kaolinite as a coagulant aid, the removal efficiencies tended to increase, especially for lower dosages of PAC and alum. With the increase of initial dye concentration, PAC and

  • removal of an anionic reactive dye by chitosan and its

    Removal of an Anionic Reactive Dye by Chitosan and its

    Removal of an Anionic Reactive Dye by Chitosan and its Regeneration Chitin is obtained from the exoskeleton of crustaceous, the cuticles of insects and the cell walls of fungi. However, chitin and chitosan are only commercially extracted from crustaceans (crab, krill, and crayfish) primarily because a large amount of the crustacean’s exoskeleton is available as a by-product of food

  • chitosan interactions with metal ions and dyes:

    Chitosan Interactions with Metal Ions and Dyes:

    Chitosan is an amino-polysaccharide with highly efficient properties for the binding of metal ions and anionic dyes. Uptake may occur through chelation on free amino functions (at near-neutral pH) or by electrostatic attraction on protonated amino groups (in acidic solutions). The polymer is soluble in acidic solutions and its binding properties can be used in both solid form (sorption) and

  • effect of viscosity, basicity and organic content

    Effect of viscosity, basicity and organic content

    The effect of viscosity (eta), basicity (B = [OH]/[Al]) and organic content (W(P)) on the flocculation performance as well as the mechanism of PAC-EPI-DMA flocculant were investigated. The eta was the key factor affecting the dye removal efficiency of PAC-EPI-DMA. PAC-EPI-DMA with an intermediate eta (2400 mPa x sec) gave higher decolorization

  • removal of both cationic and anionic contaminants

    Removal of both cationic and anionic contaminants

    2016-03-15· Read "Removal of both cationic and anionic contaminants by amphoteric starch, Carbohydrate Polymers" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • polymers: anionic and cationic tramfloc, inc.

    Polymers: Anionic and Cationic Tramfloc, Inc.

    These anionic and cationic flocculants are long chains of acrylamide. The term flocculation is often confused with coagulation. The two refer to entirely different processes. Flocculation occurs when either an anionic flocculant or a cationic flocculant forms a bridge between particles to make larger masses. Anionic and cationic flocculants

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