Anionic Polymer Flocculant & Polyacrylamide Powder | Sinofloc
Anionic Polyacrylamide in Enhanced Oil Recovery (EOR) The performance of anionic polyacrylamide flocculants in thickening, flocculation and rheological regulation plays an important role in oil production. It is widely used in drilling, water plugging, acidified water, fracturing, well washing, completion, drag reduction, scale prevention and ...
Effect of Multivalent Salts—Calcium and Aluminum on the
Analysis results indicate that the specific adsorption of Ca 2+, Al 3+ and their hydroxo complexes on anionic PAM causes the loss of anionic character in the low pH range and leads to a low flocculation efficiency. In the high pH range, the poor kaolin flocculation can be attributed to precipitation of calcium and aluminum hydroxides on active ...
removal of calcium from water - alibaba
About 6% of these are chloride, 1% are detergent, and 1% are carbonate. A wide variety of removal of calcium from water options are available to you, such as calcium organic salt, carbonate, and chloride.
The Influence of Cationic Polymers on the Performance of
on the Performance of Anionic Polymers as Precipitation Inhibitors for Calcium Phosphonates Zahid Amjad and Robert W. Zuhl 9911 Brecksville Road, Cleveland, Ohio 44141 This paper was published in the Phosphorus Research Bulletin (2002), Vol. 12, pp. 59-65.
Asian Journal of Chemistry; Vol. 25, No. 13 (2013), 7071-7074
the application status of anionic polyacrylamide in water treatment. Based on these reviews, future research perspectives relating to its synthesis and application were proposed. Key Words: Anionic polyacrylamide, Synthesis methods, Water treatment, Flocculants. Fundamental aspects of these methods will be introduced and summar ized.
Factors effecting a loss of flocculation activity of
Aluminium, iron III, lead, copper, and zinc ions formed complexes with the carboxyl groups on the polymer, resulting in zero flocculation activity. Nonionic polyacrylamides were unaffected. Viscosity–aging of polyacrylamide solutions was observed over a period of several months, but was insufficient to affect the flocculation activity.
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Water, Electrolyte, and Acid-Base Balance Flashcards | Quizlet
Start studying Water, Electrolyte, and Acid-Base Balance. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
The effect of cations on the activity of anionic
The conformation of acrylamide/acrylate copolymers' aqueous solutions is known to be affected by the presence of cations to varying degrees. Such effects are expected to be reflected in the flocculation activity of the polymer solutions, but the published literature in this area is far from convincing, particularly on the influence of divalent cations.
Flocculants and Coagulants | ChemTreat, Inc.
Examples of ChemTreat coagulants include aluminum salts, iron salts, and polyelectrolytes. Flocculants gather the destabilized particles together and cause them to agglomerate and drop out of solution. Examples of ChemTreat flocculants include low-, medium-, and high-molecular weight polymers.
Flocculants: The First Step to Cleaner Water! - Lesson
Flocculants—The tiny size and surface charge of colloids (small charged particles) make them difficult to remove from water, so engineers turn to flocculation. Flocculation is now an essential step in many water purifications systems as a means to remove suspended solids. This essential step is done before filtration in order to avoid clogging.
A review on application of flocculants in wastewater
Inorganic salts of multivalent metals such as alum, polyaluminium chloride, ferric chloride, ferrous sulphate, calcium chloride and magnesium chloride have been widely used for decades as coagulant (Joo et al., 2007).
Water Soluble Polymers - snf.au
- Inorganic compounds, ions and/or organic com-pounds of low molecular weight with a particle size of at most 10-3 µm; - Soluble organic compounds of high molecular weight, such as proteins or polymers, with a slightly larger particle size of between 10-3 and 10-2 µm. Solid compounds are: - Colloids with a particle size of between about 10-2 ...
Efficient flocculation of an anionic dye from aqueous
Yang Z, Yang H, Jiang ZW et al (2013b) Flocculation of both anionic and cationic dyes in aqueous solutions by the amphoteric grafting flocculant carboxymethyl chitosan-graft-polyacrylamide. J Hazard Mater 254:36–45 CrossRef Google Scholar
Cationic High Molecular Weight Lignin Polymer: A Flocculant
flocculant in simulated dye solutions. As stated earlier, the removal of dyes was affected by the pH, salt and dye concentration in solutions [27, 29, 30]. In this work, the effects of pH, salt, dye concentration, charge density and molecular weight of lignin-METAC polymer on the dye removal efficiency were fundamentally examined. 2.
AU2008228253A1 - Surface treated calcium carbonate and its
Polyacrylamide PAM is a cationic flocculant, the positive charge being introduced by cationic acrylamide derivative units. PAAI is available under its trade name 5 PRAESTOL" 611. Polyacrylamide PAA2 is a medium anionic flocculant, available under its trade name PRAESTOLR 2540. The results are summarized in Table 6.
(PDF) Anionic polyacrylamide “water-in-water” emulsion
PDF | Polyacrylamide "water-in-water" emulsion was regarded as a new generation of water-soluble polymeric materials and has attracted much attention from both academia and industry because of its ...
Implications for public health demands alternatives to
Zheng et al. reported that the flocculating activity of the bioflocculant MBFF19 was increased in the presence of calcium ions, while Feng and Xu reported that the flocculating rate of the bioflocculant MBF3‐3 produced by Bacillus sp. was enhanced in the presence of the following metals: Mg 2+, Al 3+, Ca 2+, K +, and Na + ions, but inhibited ...
Polyacrylamide in Agriculture and Environmental Land
Anionic polyacrylamide (PAM) has been sold since 1995 to reduce irrigation‐induced erosion and enhance infiltration. Its soil stabilizing and flocculating properties improve runoff water quality by reducing sediments, N, dissolved reactive phosphorus (DRP) and total P, chemical oxygen demand (COD), pesticides, weed seeds, and microorganisms in runoff.
Recent advances on electrodialysis for the recovery of
• Within the context of electric vehicle emergence, lithium demand will increase sharply in the next years. • Breakthrough processes must be developed to achieve sustainable p
Oil & Gas | SNF Group
SNF produces a wide array of polymers in powder and emulsion form that can be applied in the majority of field conditions, including cationic, non-ionic or anionic polymer. Selection of the best polymer for a given field depends on temperature, water composition (salts, contaminants), and rock type. Implementation
What is Super Absorbent Polymer - CHINAFLOC
Superabsorbent (Super Absorbent Polymer, SAP) is a new type of functional polymer materials. It has absorbed more than its own weight of hundreds to thousands of times higher water absorption features, and excellent water retention properties, once the swelling has become hydrogels, even if it is difficult to put the pressurized water is separated.
EP2396278A1 - Preparation of purified calcium chloride
The present invention relates to a process for preparing purified calcium chloride, in particular calcium chloride that is purified as regards the presence of magnesium and other metals present in the form of impurities, these impurities being precipitated by alkalinization, and the precipitate is separated from the calcium chloride solution.
Design and Study of a Novel Thermal-Resistant and Shear
Water-soluble polymers have been successfully employed in oilfields. To date, polyacrylamide (PAM) and partially hydrolyzed polyacrylamide (HPAM) have been the most widely used polymers in oil fields, such as in chemical flooding, drilling fluids, fracturing fluids, clay stabilizers, and other EOR technologies [6,7,8,9].
List of new Acrylamide patents & technologies
The paper-making composition comprises an anionic dialdehyde-modified polyacrylamide and a polyamide polyamine-epichlorohydrin (“pae”) resin present in the paper-making aid composition at a weight ratio of pae resin to anionic dialdehyde-modified polyacrylamide of from about 5:1 to about 1:1.6. Adhesives and methods of making the same
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WikiZero - Paper chemicals
Paper chemicals designate a group of chemicals that are used for paper manufacturing, or modify the properties of paper.These chemicals can be used to alter the paper in many ways, including changing its color and brightness, or by increasing its strength and resistance to water.
Science and Technology of Industrial Water Treatment
carbonate, fluoride, oxalate, phosphate, and polyphosphate. Further, under certain conditions, calcium ions also form insoluble salts with organophosphonate compounds and acrylic and maleic acid-based polymers commonly used to prevent the precipitation of calcium-based salts in industrial water systems. 184.108.40.206 Copper
Wastewater treatment and reclamation: A review of pulp
Full Article. Wastewater Treatment and Reclamation: A Review of Pulp and Paper Industry Practices and Opportunities. Martin A. Hubbe,*,a Jeremy R. Metts, a,b Daphne Hermosilla, c M. Angeles Blanco, d Laleh Yerushalmi, e Fariborz Haghighat, e Petra Lindholm-Lehto, f Zahra Khodaparast, g Mohammadreza Kamali, h and Allan Elliott i
Senior Chemistry - Extended Experimental Investigations
This is an inorganic flocculant and is discussed in the next suggested EEI further down this page. The other type of flocculant is the organic polymer type and the most common of these are called cationic polyelectrolytes. Two examples are polymer polyacrylamide (PAM) and poly di-methyl di-alloyl ammonium chloride (PolyDADMAC).