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nonionic polyacrylamide biodegradation function

  • Polyacrylamide degradation and its implications in ...

    2018-9-7 · Biodegradation of PAM occurs as microorganisms utilize the amide group of the polymer as a nitrogen source and/or the carbon backbone as a carbon …

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  • Microbial degradation of polyacrylamide and the ...

    2019-4-1 · Biodegradation of polyacrylamide begins with amidase catalysed deamination of polyacrylamide to ammonia and polyacrylate. The liberated ammonia is then used as a nitrogen source for growth by the microbes. The carbon backbone, polyacrylate, is more recalcitrant to biodegradation than the amide moieties.

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  • Biodegradation of Polyacrylamide and Its

    2017-5-4 · The monomer acrylamide is toxic to most microorganisms, however, some bacteria and fungi could degrade it using amidases that deaminate acrylamide to acrylic acid and ammonium, and further utilize acrylic acid to produce CO 2 and water. Some fungi and yeasts could degrade 60–80% of acrylamide.

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  • Biodegradation of polyacrylamide by anaerobic

    2014-2-1 · Polyacrylamide (PAM) used in sludge dewatering widely exists in high-solid anaerobic digestion. Degradation of polyacrylamide accompanied with accumulation of its toxic monomer is important to disposition of biogas residues. The potential of anaerobic digestion activity in microbial utilization of PAM was investigated in this study.

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  • Nonionic Polyacrylamide manufacturers and

    Nonionic polyacrylamide is a high polymer with the high molecular weight and the low ion exponent, which has the function of flocculation, dispersal, thickening, bonding, film …

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  • Enhancing the Biodegradation of Polycyclic

    The effects of a nonionic surfactant on the biodegradation of PAHs in porous media, as well as the fate of the surfactant, were investigated in this study.

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  • Acrylamide manufacturer, Polyacrylamide supplier ...

    Nonionic polyacrylamide is a high polymer with the high molecular weight and the low ion exponent, which Nonionic polyacrylamide|nonionic flocculant|nonionic PAM: has the function of flocculation, dispersal, thickening, bonding, film form...

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  • Biodegradation of nonionic and anionic surfactants

    Polyacrylamide (PAM) is a general term for acrylamide homopolymer or polymers obtained by copolymerization with other monomers. It is one of the most widely used varieties of water-soluble polymers. It is one of the most widely used varieties of water-soluble polymers.

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  • High Purity Nonionic Polyacrylamide - Buy Nonionic ...

    Hot Sale Free Sample Polyacrylamide CAS 9003-05-8 with Best Price. FOB Price: US 20-90 kg. Min. Order: 1 kg. CAS No.: 9003-05-8. Formula: C3h5no. EINECS: 231-545-4. Type: Pharmaceutical Intermediates. Appearance: Powder. Quality: Technical.

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  • nonionic polyacrylamide biodegradation

    nonionic polyacrylamide biodegradation specifications Nonionic Polyacrylamide Flocculant - Sinoloc Supplier Description:This product is a water- soluble high polymer.It’s not soluble in most organic solvents, with good flocculating activity, and can reduce the friction resistance between liquid.

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  • The Application of Nonionic Polyacrylamide -

    Biodegradation of low molecular weight polyacrylamide. Polyacrylamide (PAM), particularly high molecular PAM (>10 7 Dal), with a viscosity of over 58 centipoise (cp), has been increasingly used for enhanced oil recovery in oilfields ().Produced water generated during enhanced oil recovery contains high concentration of PAM, which should be removed before discharge (Yan et al. 2016).There have ...

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  • biodegradation of hydrolyzed polyacrylamide by

    Nonionic polyacrylamide is a high polymer with the high molecular weight and the low ion exponent, which has the function of flocculation, dispersal, thickening, bonding, film forming, gelatin and colloidal stability. It’s flocculation is hardly influenced by the PH value and the salt, and in the...

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  • Nonionic Polyacrylamide manufacturers and

    Enhancing the Biodegradation of Polycyclic Aromatic Hydrocarbons: Effects of Nonionic Surfactant Addition on Biofilm Function and Structure ... The effects of a nonionic surfactant on the biodegradation of PAHs in porous media, as well as the fate of the surfactant, were investigated in this study. ...

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  • Enhancing the Biodegradation of Polycyclic

    Biodegradation of hydrolyzed polyacrylamide by a Bacillus One of the most vital techniques for EOR is polymer flooding, which is categorized as a third recovery method. Hydrolyzed polyacrylamide (HPAM) is one of the most widely used polymers in oil fields because of its high water solubility, high temperature resistance, salt resistance, easy ...

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  • HPAM partially hydrolyzed polyacrylamide in soil

    Nonionic surfactants are used in a number of different microbiological applications, including solubilization of cell membranes, washing bacterial cultures prior to experimentation, and enhancing biodegradation of low-solubility compounds. An important consideration in these applications is the pote …

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  • Effects of nonionic surfactants on the UV/visible ...

    2003-11-1 · Enhanced desorption and biodegradation of phenanthrene in soil-water systems with the presence of anionic-nonionic mixed surfactants. Yu H, Zhu L, Zhou W. J Hazard Mater, 142(1-2):354-361, 18 Aug 2006 Cited by: 22 articles | PMID: 16987596

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  • Influence of nonionic surfactant on the

    2015-8-1 · Fig. 1 shows NAP degradation in the presence of various surfactant-modified clays. Different nonionic surfactant-modified clays were found to affect NAP biodegradation rates in various ways. Table 2 shows the pseudo-first-order apparent rate constants (k) for NAP degradation in the presence of nonionic surfactant-modified clay material.The k T values for NAP biodegradation, which is defined as ...

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  • The influence of sorption on polyaromatic

    2018-10-30 · series form molecular weight product example; flopam: powder: ultra high: an 934 vhm an 923 vhmu: flopam: powder: very high: an 934 sh & shu sd & shd pwg & sep

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  • biodegradation of polyacrylamide and its derivatives

    Biodegradation of polyacrylamide by anaerobic digestion under mesophilic condition and its performance in actual dewatered sludge system. PAM biodegradation has been studied by some researchers at present, but the results seem contradictory. the content of acrylamide as a monomer and toxic derivatives was studied and shown in Fig. 4.

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  • Biodegradation of polyacrylamide by anaerobic

    2014-2-1 · 1. Introduction. Anaerobic digestion (AD) by converting a part of its organic matter into biogas is an effective biomass valorization technology (Meester et al., 2012, Francioso et al., 2010).Recently, high-solid anaerobic processes are attractive for the advantages of smaller reactor volume, lower energy requirements for heating, and less material handling (Duan et al., 2012, Domenec, 2009 ...

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  • Enhancing the Biodegradation of Polycyclic Aromatic ...

    Enhancing the Biodegradation of Polycyclic Aromatic Hydrocarbons: Effects of Nonionic Surfactant Addition on Biofilm Function and Structure ... The effects of a nonionic surfactant on the biodegradation of PAHs in porous media, as well as the fate of the surfactant, were investigated in this study. ...

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  • Determination of Nonionic and Partially Hydrolyzed ...

    Polyacrylamide and its copolymers of acrylic acid have wide application as flocculants and mobility control fluids in enhanced oil recovery. Detailed knowledge of the molecular weight and molecular weight distribution has not been available for these polymers because their exceptionally high molecular weight exceeds the capabilities of traditional techniques, such as size exclusion ...

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  • The Thermal Gelation Behavior and Performance

    2020-7-14 · The thermal gelation behavior of nonionic polyacrylamide (NPAM) and PEI was investigated, and sodium citrate (NaCit) was selected as a new retarder to prolong the gelation time. The gelation performance of NPAM/PEI gel system can be adjusted by the variation of NPAM or PEI concentration, and a quadratic model was developed by statistical ...

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  • Effects of nonionic surfactants on the UV/visible ...

    Nonionic surfactants are used in a number of different microbiological applications, including solubilization of cell membranes, washing bacterial cultures prior to experimentation, and enhancing biodegradation of low-solubility compounds. An important consideration in these applications is the pote …

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  • (PDF) Biodegradation of naphthalene in

    Academia.edu is a platform for academics to share research papers.

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  • Biodegradation of Polyethers (Polyethylene Glycol ...

    2021-7-13 · Our company successfully attained IS9001 Certification and European CE Certification of Cationic Powder Polymer, Anionic Emulsion Polyacrylamide, Sodium Naphthalene Formaldehyde 5%, Bulk Nonionic Polyacrylamide, Our intention is to assist . Get Price

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  • sodium naphthalene formaldehyde 5 anionic

    2021-3-12 · Biodegradation of partially hydrolyzed polyacrylamide by bacteria isolated from production water after polymer flooding in an oil field. Journal of Hazardous Materials 2010, 184 (1-3) , 105-110.

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  • biodegradation of hydrolyzed polyacrylamide by

    Biodegradation of low molecular weight polyacrylamide. Polyacrylamide (PAM), particularly high molecular PAM (>10 7 Dal), with a viscosity of over 58 centipoise (cp), has been increasingly used for enhanced oil recovery in oilfields ().Produced water generated during enhanced oil recovery contains high concentration of PAM, which should be removed before discharge (Yan et al. 2016).There have ...

    Get Price
  • Determination of Nonionic and Partially Hydrolyzed ...

    Polyacrylamide and its copolymers of acrylic acid have wide application as flocculants and mobility control fluids in enhanced oil recovery. Detailed knowledge of the molecular weight and molecular weight distribution has not been available for these polymers because their exceptionally high molecular weight exceeds the capabilities of traditional techniques, such as size exclusion ...

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  • HPAM Hydrolyzed Polyacrylamide in soil humectant

    Biodegradation of hydrolyzed polyacrylamide by the Hydrolyzed polyacrylamide (HPAM) is widely used to EOR in many oilfields, and it is generally accepted as a nontoxic polymer. However, under certain physical or chemical conditions, it may degrade and produce acrylamide (AM), which exhibits toxicity to nervous system and damages human health ...

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  • Modeling the influence of nonionic surfactants on ...

    Four commercial nonionic surfactants at a concentration of 25 mg/L were tested to evaluate their effect on biodegradation rates of phenanthrene. The model could adequately predict the oxygen uptake, cell growth and substrate disappearance data observed in the experimental studies.

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  • Adsorption of polyacrylamide on oxide minerals

    2003-2-21 · Adsorption of Polyacrylamide on Oxide Minerals L. T. Leet and P. Somasundaran* School of Engineering and Applied Science, Columbia University, New York, New York 10027 Received February 22, 1!NJ8. In Final Form: January 6, 1!NJ9 The adsorption of nonionic polyacrylamide on a series of oxide minerals is studied. The results show

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  • Influence of Nonionic Surfactants on Fungal and

    various surfactants, nonionic surfactants have been commonly used in the biodegradation of hydrophobic compounds, as they exhibit low bacterial toxicity compared to anionic surfactants [11, 12]. Hassan and Sorial evaluated the effects of nonionic surfactants (Triton X-100 and Tomadol® 25-7) on

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  • Rheological properties of ionic and nonionic ...

    Non‐Newtonian shear viscosities were measured over six decades of strain rate k for 13 solutions of both the ionic and nonionic forms of polyacrylamide. By using the Weissenberg rheogoniometer with both the cone‐and‐plate and the parallel‐plate attachments, the normal stress functions σ 1 (k 2) and σ 2 (k 2) were obtained for four of the solutions.

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  • (PDF) Biodegradation of naphthalene in

    Academia.edu is a platform for academics to share research papers.

    Get Price
  • biodegradation of polyacrylamide and its

    Biodegradation of polyacrylamide by anaerobic digestion under mesophilic condition and its performance in actual dewatered sludge system. PAM biodegradation has been studied by some researchers at present, but the results seem contradictory. the content of acrylamide as a monomer and toxic derivatives was studied and shown in Fig. 4.

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  • Nonionic Polyacrylamide - chinabypam.com

    Polyacrylamide [IUPAC poly(2-propenamide), hereafter PAM] is a polymer (–CH 2 CHCONH 2 –) formed from acrylamide subunits. Polyacrylamide with only acrylamide monomers is nonionic; other monomers such as acrylate or 2-acrylamido-2-methylpropane sulfonate (AMPS) can be copolymerized at various percentages to form anionic PAM.

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  • Effects of physicochemical properties of

    2003-2-21 · Adsorption of Polyacrylamide on Oxide Minerals L. T. Leet and P. Somasundaran* School of Engineering and Applied Science, Columbia University, New York, New York 10027 Received February 22, 1!NJ8. In Final Form: January 6, 1!NJ9 The adsorption of nonionic polyacrylamide on a series of oxide minerals is studied. The results show

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  • Adsorption of polyacrylamide on oxide minerals

    Effects of nonionic surfactants on the UV/visible absorption of bacterial cells. Derick G. Brown, ... and enhancing biodegradation of low-solubility compounds. An important consideration in these applications is the potential for the surfactant to alter the cell membrane. ... with the effect a function of surfactant structure and concentration ...

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  • Effects of nonionic surfactants on the UV/visible ...

    1996-1-29 · Enhancing the Biodegradation of Polycyclic Aromatic Hydrocarbons: Effects of Nonionic Surfactant Addition on Biofilm Function and Structure. Journal of Environmental Engineering 2008 , …

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  • Biodegradation Kinetics of Phenanthrene

    various surfactants, nonionic surfactants have been commonly used in the biodegradation of hydrophobic compounds, as they exhibit low bacterial toxicity compared to anionic surfactants [11, 12]. Hassan and Sorial evaluated the effects of nonionic surfactants (Triton X-100 and Tomadol® 25-7) on

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  • Influence of Nonionic Surfactants on Fungal and

    2021-5-20 · How to Control Polyacrylamide Viscosity - Sinofloc Chemical. Increasing the temperature could decrease the viscosity, but the effect is not significant. The viscosity of nonionic polyacrylamide solution is not affected by the pH value. However, when the PH value is over 9, the viscosity of polyacrylamide is quickly increased due to hydrolysis.

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  • in chile how to control polyacrylamide viscosity ...

    Phenanthrene was solubilized in two different nonionic surfactants, Tween80 and Triton X-100. The bioavailability of phenanthrene to the bacteria isolated from the petroleum contaminated soils was studied based on the rotary flasks experiments. The r

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  • Polyacrylamide - Safe Cosmetics

    2015-7-6 · Polyacrylamide (PAM), a linear water-soluble polymeric compound with a high molecular weight, is widely used in wastewater treatment processes 1,2, papermaking 3, …

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  • Waste-Activated Sludge Fermentation for

    The widely used plasticizer phthalate esters (PAEs) have become a public concern because of their effects on environmental contamination and toxicity on mammals. However, the biodegradation of PAEs, especially diisobutyl phthalate (DiBP), remains poorly understood. In particular, genes involved in t …

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  • Properties of a newly identified esterase from Bacillus

    2014-10-16 · 2012-09-10 polyacrylamide is used in polymer flooding technology; 2012-09-05 The Research Situation and Develop prospect of Biodegradation of polyacrylamide ; 2012-08-13 Israel scholars has approved that using polyacrylamide can relieve the soil damage which is caused by forest fire; 2012-07-11 Solubility and composition of sodium polyacrylate

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  • PAM Polyacrylamide Suppliers News

    The sulphate-reducing bacteria strain H1 with the function for Hydrolysed Polyacrylamide (HPAM) degradation was isolated from a curing pot in the HPAM distribution station of Daqing Oil Field using the Hungate Anaerobic Technique. The isolates were characterised morphologically, physiologically, biochemically and molecularly. The pictures of the Atomic Force Microscope (AFM) have shown that ...

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  • Isolation and identification of the sulphate-reducing ...

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    1992-7-13 · Orville Welch, Li-Jein Lee M-1 Drilling Fluids Co. Houston A recently developed cationic polymer mud, compatible with conventional polymer additives …

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  • cationic polyacrylamide uses specifications

    Surface and Lateral Interactions of Nonylphenol Nonionic Surfactants with Porous Resin. 2012, 47 (3), 494-501. [61].Qiongjie Wang, Aimin Li*, Jinnan Wang*, Chengdong Shuang. Selection of magnetic anion exchange resins for the removal of dissolved organic and inorganic matters.

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  • polyacrylamide viscosity supplier

    Polyacrylamide nonionic water-soluble polymer | 9003 . 2020-7-11 · COMMERCIAL Polyacrylamides Major manufacturers of acrylamide polymers are BASF, SNF Floerger, Shangdong Tongli , and Kemira. Applications. Poly(acrylamide-co-acrylic acid) and its sodium salts (APAM) are widely used as thickening agent, binder, super absorbent, soil conditioner ...

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  • polyacrylamide crystals in egypt - badoc.info

    polyacrylamide used in sugar making industry in egypt. Anionic Polyacrylamide by Xinxiang Boyuan Water-putifying. Anion polyacrylamide series are high polymerization & water soluble high molecular polymer, it can be used in the petroleum, mineral separation, coal washing, metallurgy, chemical industry, papermaking, textile, sugar making, drug, environment protection, building material and ...

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  • polyacrylamide viscosity in algeria

    Polyacrylamide (PAM)is a kind of water soluble polymer, has unique effect to increase the viscosity of water or to promote the flocculation of particles present in water, it can also reduce the frictional resistance between the liquid. According to the different ion characteristics, PAM has three types: Anionic PAM, Cationic PAM and Nonionic PAM.

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  • cationic polyacrylamide uses specifications

    Cationic polyacrylamide(high degree of ion) used . The use of cationic, anionic and nonionic polyacrylamide. Polyacrylamide (PAM) is a linear water soluble polymer, is a water-soluble polymer compounds used in wide varieties of one, PAM and its derivatives can be used as efficient flocculant, thickening agent, paper strengthening agent and liquid drag reduction agent, which is widely used ...

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  • polyacrylamide hydrolysis in colombia

    2003-2-20 · hydrolysis. a nonionic polyacrylamide (PAM) can behave as an anionic polymer. whereas there can be an increase in the anionic nature of a sulfonated polyacrylamide (P AMS). 01anges in the ionic nature of a cationic polyacrylamide (P AMD) as a function of pH are more complex:.

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    높은 효과적인 물 처리 화학 양이온 Nonionic Polyacrylamide Pam Cpam Npam , Find Complete Details about 높은 효과적인 물 처리 화학 양이온 Nonionic Polyacrylamide Pam Cpam Npam,양이온 비이온성 Polyacrylamide,고효율 Polyacrylamide,Npam from Electronics Chemicals Supplier or Manufacturer-Landy Enterprise Limited

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