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  • Synthesis and coagulation performance of composite

    2018-6-16 · Synthesis and coagulation performance of composite poly-aluminum-ferric-silicate-chloride coagulants in water and wastewater A.K. Tolkou Laboratory of General and Inorganic Chemical Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece, Tel. +30 2310 997794 Correspondence [email protected]

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  • Synthesis and coagulation performance of composite po

    2015-9-7 · The synthesis of coagulants took place at room temperature by the application of two polymerization methods, according to a modified procedure proposed by Gao et al. [7], although with certain modifications, i.e. by applying the co-polymerization or the composite polymerization techniques both in different mixing order

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  • Synthesis and coagulation performance of composite

    Synthesis and coagulation performance of composite poly-aluminum-ferric-silicate-chloride coagulants in water and wastewater. AbstractThe aim of this work was to study the combination of an inorganic pre-polymerized coagulant (polyaluminum chloride [PACl]) with ferric species and polysilicic acid in various mixing orders Al/Fe/Si and OH/Al molar ...

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  • PSiFAC – POLY-ALUMINUM-FERRIC-SILICATE-CHLORIDE:

    2014-1-28 · PSiFAC – POLY-ALUMINUM-FERRIC-SILICATE-CHLORIDE: SYNTHESIS AND COAGULATION PERFORMANCE OF A NOVEL COMPOSITE COAGULANT IN WATER AND WASTEWATER TREATMENT A. Tolkou 1, A. Zouboulis 1, P. Samaras 2 1Laboratory of General & Inorganic Chemical Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR …

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  • Synthesis and application of polyferric chloride–poly ...

    2012-12-1 · Comparison of coagulation performance by composite PFC–DAM–ECH coagulants with various crosslinkers Figs. 5 a and b illustrate a comparison of PFC–DAM–ECH with different types of cross-linker (EDM, DTM and TTM) in terms of coagulation performance (color removal rates) and zeta potential of formed flocs after rapid stirring.

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  • Synthesis, characterization and coagulation behavior

    2012-8-21 · Coagulation experiments reveal that the PFS–CP composite reagent exhibits a superior coagulation performance, when compared to conventional coagulants. PDA analysis shows that the improvement of kinetic parameters with increasing CP/Fe ratio (especially in comparison with PFS) is attributed to the nature and properties of the cationic polymer.

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  • Characterization and coagulation–flocculation

    2018-6-8 · Composite coagulant has received widespread attention and research for its excellent coagulation performance in recent years. In this study, a new composite coagulant poly-ferric-aluminum-silicate-sulfate was synthesized using water glass, FeSO 4 ·7H 2 O, Al 2 (SO 4) 3 ·18H 2 O, and NaClO 3, their structures and morphologies were characterized and compared by X-ray diffraction, infrared ...

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  • Preparation of composite coagulant of PFM

    2015-2-19 · As shown in Figure 3, the coagulation performance of PFM-PDMDAAC was better than that of the PFM + PDMDAAC at the same dosage, which demonstrated that the optimized composite coagulant was more efficient compared with the simple sequential addition of the same reagents. This also verified that the new reagent can give full play to the respective advantages of the PFM and PDMDAAC and produce a clear synergistic effect on the coagulation performance.

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  • Synthesis and evaluation of a novel inorganic–organic ...

    Coagulation/flocculation is widely used in the treatment of dye wastewater because of the low cost, high efficiency, short process and convenient operation. However, with the increase of pollutants in water and in recent years the higher requirement for environment protection, traditional flocculants have found it difficult to meet the processing requirements.

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  • Synthesis and characterization of poly(vinylidene

    From Fig. 1(c) of the composite powders it is also observed that the most of the polymer particles in composite powder have become smaller (less than 100 nm) when compared with the pure polymer particles prepared in the same way . The nucleation effect of CNT on PVDF crystallization could be a reason for faster crystallization, which resulted in large concentration of smaller particles in the composite.

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  • Preparation of composite coagulant of PFM

    2015-2-19 · A novel inorganic–organic composite coagulant, poly-ferric-magnesium (PFM) polydimethyldiallylammonium chloride (PDMDAAC), was prepared using FeSO 4, MgSO 4 and PDMDAAC as raw materials and was introduced to treat landfill leachate. The coagulation performance of the new reagent was evaluated and compared with those of other coagulants.

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  • Preparation and Coagulation Performance of Poly

    Some conditional experiments for the preparation of Poly Silicate Aluminium Ferric Boron (PSAFB) composite flocculant and its coagulation and flocculation for the removal of CODCr were conducted and discussed.Preliminary results show the optimum synthesis condition as follows: Si/Al( mole ratio) =2/1, Si/Fe( mole ratio)=1/1,Si/B( mole ratio)=10/1.

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  • Preparation, characterization and coagulation

    2017-2-16 · For example, a composite coagulant poly-zinc-silicate-sulfate (PZSS) was prepared by introducing PS to zinc salt, and the PZSS showed better coagulation performance than that of conventional ferric and aluminum coagulants in oily wastewater (Zeng & Park 2009).

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  • Coagulation Performance of Organic Modified Poly ...

    An organic modified poly-polyacrylamide-Al-Zn-Fe (PPAZF) coagulant was prepared by adding polyacrylamide (PAM) as additives in poly-Al-Zn-Fe (PAZF). The coagulation performance of PPAZF was investigated compared to that of PAZF and polyaluminium chloride (PAC) in treating domestic sewage and pharmaceutical wastewater. The results showed that PPAZF not only had better removal of …

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  • Graphene Oxide Fe-Based Composite Pre-Polymerized ...

    2020-7-3 · Journal of synergistically the performance of coagulation, when applied for the treatment of water.The structure C Carbon Research Article Graphene Oxide/Fe-Based Composite Pre-Polymerized Coagulants: Synthesis, Characterization, and Potential Application in Water Treatment

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  • Coagulation performance and microstructural

    2017-5-2 · A novel magnetic composite coagulant, prepared from nano-Fe3O4 and poly-aluminum chloride, was introduced to pre-treat mature landfill leachate. The coagulation performance of the coagulant as well as its microstructural morphology was discussed. Coagulation experimental results revealed that the coagulation performance of the landfill leachate using the new coagulant was better …

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  • Synthesis and application of poly(Acrylamide-Itaconic

    30 kGy. The composite material was characterized by Fourier infrared (FTIR), X-ray diffraction (XRD), thermal gravimetric analysis (TGA), differential thermal analysis (DTA), scanning electron microscope (SEM), and Brunauer-Emmett-Teller (BET) surface area measurements. The adsorption performance of the composite was investigated.

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  • Synthesis and characterization of poly(vinylidene

    I. INTRODUCTION Carbon nanotubes (CNT)/polymer composites are an important class of materials because of their versatile applications. Reference Ajayan and Stephan 1 – Reference Grossiord, Loos, Regev and Koning 4 This versatility arises mainly due to the unique combination of electrical and mechanical properties of CNTs and the polymer’s ability to act as a flexible matrix material.

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  • Synthesis and Electroanalytical Performance of a

    2012-1-15 · 3,4-ethylenedioxythiophene (EDOT) was electropolymerized in the presence of sodium lignosulfonate (LS) at constant current density of 0.25 mA cm −2 . As a result, a thin composite film consisting of poly(3,4-Ethylenedioxythiophene) and LS (PEDOT/LS) was deposited on the electrode surface. Unlike PEDOT, PEDOT/LS shows appreciable redox activity due to LS-derived quinone …

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  • Synthesis of [email protected] nanosheet

    2020-8-24 · Poly-o-methoxyaniline (POMA) and zinc oxide (ZnO) composites were prepared via in situ polymerization and characterized by thermogravimetry thermal analysis, X-ray diffraction analysis, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and N2 sorption measurement. The composites …

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  • Synthesis and Electroanalytical Performance of a

    Synthesis and Electroanalytical Performance of a Composite Material Based on Poly(3,4-ethylenedioxythiophene) Doped with Lignosulfonate. International Journal of Electrochemistry . 2012. Vol. 2012, no. 2012, pp.1-7.

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  • Synthesis and characterization of poly-aluminum silicate ...

    2020-1-27 · coagulation efficiency of an aluminum–silicate polymer composite (PASiC) increases with rising basicity, however, the PASiC products tend to become cloudy or partly gelatinous in this case.18 Li et al. showed that the coagulation performance of a poly …

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  • Synthesis and Hydrophilic Performance of

    2016-3-30 · Lactide was synthesized using lactic acid and stannous octoate as raw material and catalyst, respectively. Poly(lactic acid)-poly(ethylene glycol) (PLA-PEG) was prepared by lactide and poly (ethylene glycol) (PEG) via ring-opening polymerization. The most appropriate technological conditions of synthesis of lactide were researched in the paper.

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  • (PDF) Synthesis of poly-(BA-co-MMA) latexes filled

    Synthesis of poly-(BA-co-MMA) latexes filled with SiO2 for coating in construction applications ... High pressure homogenizers are the best option for “in situ” synthesis of composite latex particles (organic–inorganic) commercial production and sonication is very convenient for small is a good alternative to achieve coatings with ...

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  • Synthesis and Characterization of Chemically Modified ...

    2016-12-16 · Synthesis and Characterization of Chemically Modified ... immersed in a coagulation bath after exposure for a fixed time to the air until complete evaporation of the solvent. After complete coagulation, the membrane was ... Synthesis of fluorinated aromatic poly ether ether ketone from exafluorobisphenol A .

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  • Fabrication and characterization of poly(ferric

    2014-4-2 · Color removal performance by chemical coagulation using composite PFC-P(ECH-DAM) depends on the characteristics of both coagulants and dye molecules [29, 30]. The reactive blue molecules were effectively removed under weakly acidic conditions can be also attributed to the protonation and charge density decrement of dye molecules [ 31 ].

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  • Effects of Coagulation Bath Temperature on the

    2010-4-23 · Optimal synthesis and operation of low-cost polyvinyl chloride/bentonite ultrafiltration membranes for the purification of oilfield produced water. ... Effects of coagulation bath temperature on structure and performance of poly (vinyl butyral) hollow fiber membranes via thermally induced phase separation. ... Improved performance of composite ...

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  • The combination of aluminum and iron in

    2014-1-27 · 2.1.2. Synthesis of poly-aluminum-ferric-silicate-chloride coagulants The synthesis of coagulants took place at room temperature by the application of two polymerization methods, according to a procedure proposed by Gao et al. (2003), although with certain modifications, i.e. by applying the co-polymerization or the composite

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  • High-Performance Copolymerized Poly(m

    2019-5-14 · Simple synthesis of WO3-Au composite and their improved photothermal synergistic catalytic performance for cyclohexane Molecular Catalysis ( IF 5.062) Pub Date : 2019-05-14, DOI: 10.1016 Jijin Mai,Yanxiong Fang,Jincheng Liu,Jinhong Zhang,Xiaolan Cai,Yuying Zheng

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  • Synthesis and Characterization of Chemically Modified ...

    2016-12-16 · Synthesis and Characterization of Chemically Modified ... immersed in a coagulation bath after exposure for a fixed time to the air until complete evaporation of the solvent. After complete coagulation, the membrane was ... Synthesis of fluorinated aromatic poly ether ether ketone from exafluorobisphenol A .

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  • The combination of aluminum and iron in

    2014-1-27 · 2.1.2. Synthesis of poly-aluminum-ferric-silicate-chloride coagulants The synthesis of coagulants took place at room temperature by the application of two polymerization methods, according to a procedure proposed by Gao et al. (2003), although with certain modifications, i.e. by applying the co-polymerization or the composite

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  • Synthesis and performance of polyurethane/silicon

    Chrysotile asbestos has excellent physical and chemical properties, but its high biotoxicity is very damaging to human health, due to its durability, high aspect ratio, and the exist of iron. By simple chemical treatment of chrysotile asbestos, silicon oxide nanofibers rich in hydroxyl groups on the surface can be prepared. In this study, we synthesized a series of polyurethane/silicon oxide ...

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  • Preparation and performance study of a PVDF–LATP

    2015-8-20 · METHOD FOR SYNTHESIS OF THIN FILM COMPOSITE MEMBRANES ... This is mainly due to the relatively poor performance and/or stability of the membrances in organic solvents. ... solubility of XDA in water is however too low to be able to perform an efficient crosslinking reaction in the aqueous coagulation solution. The use of HDA and BDA in the ...

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  • METHOD FOR SYNTHESIS OF THIN FILM COMPOSITE

    2020-6-26 · Synthesis of a New Asymmetric Composite Membrane with Bi-Component ... coagulation process generates a huge volume of dangerous sludge and a problem of sludge disposal. To meet the ... The aim of this work is to study the performance of a new asymmetric composite membrane bi …

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  • Synthesis of a New Asymmetric Composite Membrane

    Keywords: Composite Foaming; Mechanical Properties; Poly(vinyl chloride); Surface Treatment; Wood Flour Document Type: Research Article Affiliations: 1: Institute of Physics and Optoelectronics Technology, Baoji University of Arts and Sciences, Baoji 721016, P. R. China 2: Institute of Materials for Energy and Environment, State Key Laboratory Breeding Base of New Fiber Materials and Modern ...

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  • Synthesis, Preparation and Mechanical Property of

    2015-3-22 · Cationic polymer, hydroxy aluminum, and clay minerals are three flocculants with different action mechanisms and a more cost-efficient multiple flocculant can be prepared by compositing them through appropriate technology. All of attapulgite (ATP), clay minerals containing magnesium, aluminum, and silicate, are porous environmental mineral material with good absorbability and have found wide ...

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  • Preparation and Coagulation Behavior of a Novel

    2021-1-30 · We developed an electrospun carbon nanofiber–carbon nanotube (CNF–CNT) composite with optimal sorption capacity and material strength for point-of-use (POU) water treatment. Synthesis variables including integration of multiwalled carbon nanotubes (CNTs) and macroporosity (via sublimation of phthalic acid), relative humidity (20 and 40% ...

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  • Synthesis, Optimization, and Performance

    INTRODUCTION. Poly(vinylidene fluorine) (PVDF) is a semi-crystalline polymer. The main macromolecular straight chain of PVDF is surrounded by fluorine and hydrogen atoms (–CH 2-CF 2 –). Its crystalline structure and spatial arrangement of CH 2 and CF 2 groups along the polymer chain result in excellent mechanical stability (Lui et al., 2011b).The high electronegativity of fluorine atoms ...

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  • Synthesis and Characterization of Chemically Modified ...

    2016-12-16 · Synthesis and Characterization of Chemically Modified ... immersed in a coagulation bath after exposure for a fixed time to the air until complete evaporation of the solvent. After complete coagulation, the membrane was ... Synthesis of fluorinated aromatic poly ether ether ketone from exafluorobisphenol A .

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  • Facile synthesis of hybrid CNTs/NiCo2S4 composite

    2016-7-11 · Facile synthesis of hybrid CNTs/NiCo 2 S 4 composite for high performance supercapacitors Delong Li , 1, 2 Youning Gong , 1, 2 and Chunxu Pan a, 1, 2, 3 1 Shenzhen Research Institute, Wuhan University, Shenzhen 518057, China

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  • Synthesis of Silver Nanocomposite with Poly ...

    Dispersing silver nanoparticles homogeneously into a polymer matrix by ex situ methods is difficult because of the easy agglomeration of nanoparticles. Therefore, convenient and effective ways of preparing Ag nanoparticles in polymer materials are still in strong demand. Vacuum deposited thin discontinuous silver films on the composite of Poly (vinylpyrrolidone) (PVP) and poly (4-vinylpyridine ...

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  • High-Performance Copolymerized Poly(m-Phenylene ...

    INTRODUCTION. Poly(vinylidene fluorine) (PVDF) is a semi-crystalline polymer. The main macromolecular straight chain of PVDF is surrounded by fluorine and hydrogen atoms (–CH 2-CF 2 –). Its crystalline structure and spatial arrangement of CH 2 and CF 2 groups along the polymer chain result in excellent mechanical stability (Lui et al., 2011b).The high electronegativity of fluorine atoms ...

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  • Clay nanoparticles effects on performance and

    2019-9-9 · Poly(ethylene glycol) (PEG) hydrogels are popular for cell culture and tissue-engineering applications because they are nontoxic and exhibit favorable hydration and nutrient transport properties. However, cells cannot adhere to, remodel, proliferate within, or degrade PEG hydrogels.

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  • Synthesis and Characterization of Tunable

    2015-9-4 · Introduction. Coagulation-flocculation is a widely used technology which separates impurities from polluted water bodies. Coagulants typically adopted for water treatment are inorganic iron and aluminum salts [1–3].In addition to Al-base coagulants, Fe-based coagulants such as Fe 2 (SO 4) 3 and FeCl 3 have been increasingly favored due to their non-toxicity, larger flocs size, superior ...

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  • Enhanced Coagulation-Flocculation Performance of

    2008-11-5 · In this study, a novel poly[p-(2,5-dihydroxy)-phenylenebenzobisoxazole] (PBOH) polymer fiber has been synthesized for the first time, and was characterized by its intrinsic viscosity, TG-DTG, XRD and Raman.PBOH fiber spinning was done by a dryjet wet-spinning technique. The thermostability and mechanical properties of PBOH were compared with those of PBO in order to investigate the ...

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  • Synthesis and properties of poly[p-(2,5-dihydroxy ...

    2019-4-17 · Polyimides (PI) are high-performance polymers of imide monomers which contain two acyl groups (C=O) bonded to nitrogen (N). These polymers are known for their high temperature performance in the 400-500°C range as well as chemical resistance. They are used to replace the conventional use of glass, metals and even steel in many industrial applications.

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  • Tea from the drinking to the synthesis of metal

    2020-10-22 · The synthesis of metal-complexes with superior absorption performance in the visible region is a challenge for optoelectronic device applications. ... poly (vinyl alcohol) (PVA) polymer to ...

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  • Electrospun Poly (Vinyl Alcohol) Poly Ethylene Glycol ...

    2021-3-12 · Electrospun Poly (Vinyl Alcohol) Poly Ethylene Glycol ... Various techniques such as coagulation, performance evaluation of electrospun composite precipitation, membranes separation process, ion nanofibers were prepared by electrospinning using PVA, ... drawing [9], template synthesis [10] and electrospinning composite nanofibers showed ...

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  • (PDF) Synthesis & Characterization of PVA/STA

    Synthesis & Characterization of PVA/STA Composite Polymer Electrolyte Membranes for Fuel Cell Application. Journal of Materials Engineering and Performance, 2008. Ajit Banthia. Download PDF. Download Full PDF Package. This paper. A short summary of this paper.

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  • US2010210622A1 HETEROCYCLIC COMPOUNDS

    In one aspect, the present invention provides for a compound of Formula I in which the variable X1a, X1b, X1c, X1d, Q, A, R1, B, L, E, and the subscripts m and n have the meanings

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  • Dissertations Theses: 'Mannich condensation

    In this paper the new starting material 2-(5-chloro-1H-benzo[d]imidazole-2-yl) aniline (1) was synthesized by the condensation reaction of 4-chloro-o-phenylenediamine and anthranilic acid .The new Mannich base derivatives were synthesized using formaldehyde and different secondary amines to synthesize a new set of benzimidazole derivatives(2-5).

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  • Acidic Ionic Liquids - ACS Publications - American ...

    The structural diversity and synthesis of acidic ionic liquids are discussed in the introduction sections of this review. In addition, an unambiguous classification system for various types of acidic ionic liquids is presented in the introduction. The physical properties including …

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  • CARBON NANOMATERIAL ELECTRONICS : devices

    In such cases, its performance is enhanced through post-synthesis functionalization and composite creation with other organic and inorganic molecules. Moreover, through post-synthesis modifications, it has been observed to reduce defects such as wrinkles, crumples, and ripples in graphene which hinders its brilliance in devices.

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  • Acidic Ionic Liquids - ACS Publications - American ...

    The structural diversity and synthesis of acidic ionic liquids are discussed in the introduction sections of this review. In addition, an unambiguous classification system for various types of acidic ionic liquids is presented in the introduction. The physical properties including …

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  • Dissertations Theses: 'Mannich condensation

    In this paper the new starting material 2-(5-chloro-1H-benzo[d]imidazole-2-yl) aniline (1) was synthesized by the condensation reaction of 4-chloro-o-phenylenediamine and anthranilic acid .The new Mannich base derivatives were synthesized using formaldehyde and different secondary amines to synthesize a new set of benzimidazole derivatives(2-5).

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  • Synthesis and characterization of composites

    2015-12-29 · We have successfully synthesized chitosan-PEG based composite filtration membranes using solvent evaporation method at composition variation of chitosan and PEG of 2:1 and 3:1. The SEM images showed that synthesized membranes have anisotropic surface morphologies with different pore size and distribution. The range pore size were 0.05-0.30 um and 0.05-0.50 um for ratio of 2:1 and 3:1 ...

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  • ISTANBUL TECHNICAL UNIVERSITY GRADUATE SCHOOL

    2015-7-4 · Table 2.1 : CBT's used during the synthesis of composite PES ... Coagulation bath temperature (CBT) was changed for tailoring the NaOH loading to the membranes. When the CBT was increased from 36 to 66°C, NaOH loading has ... In-addition, fuel cell performance of composite PES membranes are investigated in relation to the CBT. 2M Ethanol in 1M ...

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  • Interfacially-grafted Single Wall Carbon Nanotube Poly ...

    2021-1-23 · anti-solvent. Use of a pure SWCNT solution forms a wet-spun nanotube yarn [24, 25], while use of a polymer solution as anti-solvent has been used to form nanocomposite fibers. Polyvinyl alcohol (PVOH) is the most common matrix used for SWCNT coagulation spinning, for both convenience and performance [9, 10]. Post-processing, by hot-drawing,

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  • Harry Allcock | Eberly College of Science

    Synthesis and Characterization of Bismuth Telluride Nanoparticles for Use in Flexible Polymer-Nanoparticle Hybrid Thermoelectric Devices. Polymer-based thermoelectric materials, which can have readily-tuned properties through simple control of their chemistry, offer the promise of providing flexible, lightweight, and low-cost modules for the environmentally-friendly conversion of waste heat to ...

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  • Synthesis and Characterization of Bismuth Telluride ...

    The increasing hydrogels synthesis methods aim to supply the demand for biocompatible materials and adequate for use in different applications such as pollutant removal, development of medicines, cosmetics, hygiene, and agricultural products 2 2 Estroff LA, Hamilton AD. Water gelation by small organic molecules.

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  • Coagulation and Flocculation in Water and

    2019-9-9 · Poly(ethylene glycol) (PEG) hydrogels are popular for cell culture and tissue-engineering applications because they are nontoxic and exhibit favorable hydration and nutrient transport properties. However, cells cannot adhere to, remodel, proliferate within, or degrade PEG hydrogels.

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  • Poly(melamine-formaldehyde-silica) Composite

    2019-2-4 · For the first time, the design and preparation of magnetic polyvinyl alcohol ([email protected]) nanocomposite film as a novel nanocatalyst was accomplished by in situ precipitation method. To enhance the catalysis activity, the surface modification of this nanocomposite was carried out by sulfonic acid. After the synthesis of this nanocomposite film, Fourier-transform infrared (FT-IR) spectroscopy ...

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  • Synthesis and Characterization of Tunable

    2017-10-1 · Low in stability, difficulty in reuse, and loss in activity are key challenges to the potential use of laccase in industrial applications. To date, enzyme immobilization has become one of the most popular methods to maintain the activity and enhance the stability and reusability of enzymes.

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