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biodegradation of high purity polyacrylamide uses

  • biodegradation of high purity polyacrylamide uses

    Biodegradation of low molecular weight . 2020-1-15 · 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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  • 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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  • Polyacrylamide degradation and its implications in ...

    2018-9-7 · High molecular weight (10 6 –3 × 10 7 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a viscosity modifier and ...

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  • Biodegradation of partially hydrolyzed

    Partially hydrolyzed polyacrylamide (HPAM) in production water after polymer flooding in oil filed causes environmental problems, such as increases the difficulty in oil-water separation, degrades naturally to produce toxic acrylamide and endanger local ecosystem. Biodegradation of HPAM may be an efficient way to solve these problems.

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  • Biodegradation of low molecular weight

    2020-1-15 · 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 been a lot of studies focusing on the biodegradability ...

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  • Biodegradation of polyacrylamide by bacteria

    Polyacrylamide (PAM), a linear water soluble polymeric compound with high molecular weight, is extensively used for oil production in China. Compared with the physico-chemical degradation of PAM, there is no acrylamide monomer, which causes peripheral neuropathy, released in the process of biodegradation. Unfortunately, few microorganisms have been isolated which can degrade PAM.

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  • Transfer and degradation of polyacrylamide based ...

    2021-7-13 · 65 production uses about 900 t/y of PAM-based flocculants (i.e. 6% of the total consumption) as 66 clarification aid (UNPG 2013). 67 High molecular weight PAMs can be modified to develop non-ionic, anionic, or cationic properties for 68 specific uses (Scott et al., 1996). However for environmental applications which are described in this

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  • Anaerobic biodegradation of partially hydrolyzed ...

    The increasing usage of partially hydrolyzed polyacrylamide (HPAM) in oilfields as a flooding agent to enhance oil recovery at so large quantities is an ecological hazard to the subsurface ecosystem due to persistence and inertness. Biodegradation of HPAM is a potentially promising strategy for deal …

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  • Transfer and degradation of polyacrylamide-based ...

    2014-9-26 · The biodegradation of AMD requires not only amidase but also enzymes able to metabolize the intermediate products. Indeed, the biodegradation of AMD induces the production of ammonia and AA. However, the subsequent fate of these products is …

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  • Acrylamide Uses and Production - UK Essays

    Polyacrylamide adds to the irrigation water will reduced up to 94% of furrow erosion. Polyacrylamide has been shown to reduce erosion when introduced through a sprinkler irrigation system (Byornberg and Aase, 2000; Green et al., 2000). Smaller quantities of acrylamides are formulated in cosmetics and soap preparations as thickeners.

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  • Effect of ozone treatment upon biodegradability of

    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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  • Shear-Induced Degradation of Linear Polyacrylamide ...

    2001-5-16 · Electrophoretic channels are filled with a polymer matrix prior to their use in DNA separations. This process, called gel-loading, can be accomplished manually, using syringes, or can be automated through the use of small pumps or vacuum. The injection rate is constrained by the desire to minimize shear-induced degradation of the polymer molecules. Currently, the community lacks …

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  • Current status on the biodegradability of acrylic

    2021-1-11 · Acrylic polymers (AP) are a diverse group of materials with broad applications, frequent use, and increasing demand. Some of the most used AP are polyacrylamide, polyacrylic acid, polymethyl methacrylates, and polyacrylonitrile. Although no information for the production of all AP types is published, data for the most used AP is around 9 MT/year, which gives an idea of the amount of …

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  • Biodegradation of the cross-linked copolymer of

    2016-1-28 · Chemical cross-linking and the high molecular weight of superabsorbent copolymers (SAPs) are the two main causes of their resistance to biodegradation. However, SAP particles are colonized by microorganisms. For the purposes of this study, the dry technical copolymer of acrylamide and potassium acrylate containing 5.28 % of unpolymerized monomers was wrapped in a geotextile and incubated in ...

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  • Waste-Activated Sludge Fermentation for

    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, …

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  • Transfer and degradation of polyacrylamide-based ...

    2014-9-26 · The aim of this review was to summarize information and scientific data from the literature dedicated to the fate of polyacrylamide (PAM)-based flocculants in hydrosystems. Flocculants, usually composed of PAMs, are widely used in several industrial fields, particularly in minerals extraction, to enhance solid/liquid separation in water containing suspended matter.

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  • Use of polymeric dyes in lignin biodegradation assays ...

    1988-1-1 · The polymeric dyes used in these assays are inexpensive and can be obtained commercially in high purity. They are stable and readily soluble, have high extinction coefficients, and low toxicity toward Phanerochaete chrysosporium and other white rot fungi and bacteria tested, o-Anisidine and other low-molecular-weight dyes that have been used in ...

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  • Induction of esterase activity during the degradation

    2020-10-26 · In this study, the induction of esterase activity during the degradation of a high concentration of di(2-ethylhexyl) phthalate (DEHP) (1500 mg l−1) by Fusarium culmorum was investigated using Ca(NO3)2 as nitrogen source under liquid fermentation conditions. Assessments of esterase activities through biochemical tests and zymographic assays, as well as fungal growth were …

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  • Biodegradation of phenolic compounds by

    2016-4-1 · Basidiomycota have a high potential for environmental technologies. • Here the focus is on their use in the biodegradation of phenolic pollutants. • The new trends in the production of their phenol oxidases are summarized. • Various forms of the catalysts (enzymes, whole cells) and reactors are …

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  • Biodegradation of natural and synthetic rubbers: A

    2013-9-1 · Widespread studies on the biodegradation of rubbers have been carried out in order to overcome the environmental problems associated with rubber waste. This report provides an overview on the microbial degradation of natural and synthetic rubbers. Rubber degrading microbes, bacteria and fungi, are ubiquitous in the environment especially soil.

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  • HPAM partially hydrolyzed polyacrylamide in soil

    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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  • Seeking Biodegradable Alternatives to Polyacrylamide

    2015-10-12 · treatment, papermaking, oil recovery, mining, skincare products, agriculture uses and many others. Unfortunately polyacrylamide based polymers are not biodegradable. With the current changes in environmental awareness and regulation there is a pressing need for the development of biodegradable alternatives. In many applications the customer would

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  • Biodegradation of the cross-linked copolymer of

    2016-1-28 · Chemical cross-linking and the high molecular weight of superabsorbent copolymers (SAPs) are the two main causes of their resistance to biodegradation. However, SAP particles are colonized by microorganisms. For the purposes of this study, the dry technical copolymer of acrylamide and potassium acrylate containing 5.28 % of unpolymerized monomers was wrapped in a geotextile and incubated in ...

    Get Price
  • advanced treatment for actual hydrolyzed

    2019-1-15 · Advanced treatment for actual hydrolyzed polyacrylamide. 2019-01-15· This study deeply investigated the overall performance, nitrogen transformation, membrane fouling and cleaning, extracelluar polymeric substances (EPS) and microbial function in a biofilm/activated sludge membrane bioreactor (BF-AS-MBR) for treating actual hydrolyzed polyacrylamide (HPAM)-containing oilfield …

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  • Shear-Induced Degradation of Linear Polyacrylamide ...

    2001-5-16 · Electrophoretic channels are filled with a polymer matrix prior to their use in DNA separations. This process, called gel-loading, can be accomplished manually, using syringes, or can be automated through the use of small pumps or vacuum. The injection rate is constrained by the desire to minimize shear-induced degradation of the polymer molecules. Currently, the community lacks …

    Get Price
  • Current status on the biodegradability of acrylic

    2021-1-11 · Acrylic polymers (AP) are a diverse group of materials with broad applications, frequent use, and increasing demand. Some of the most used AP are polyacrylamide, polyacrylic acid, polymethyl methacrylates, and polyacrylonitrile. Although no information for the production of all AP types is published, data for the most used AP is around 9 MT/year, which gives an idea of the amount of …

    Get Price
  • dcv8102, pure polyacrylamide pam - aladine.be

    Cationic Polyacrylamide Powder, Wastewater Treatment. 100 Mesh Pam Polyacrylamide,Anionic Polyacrylamide Fine Powder For Oil Field. 9003 05 8 Cationic Acrylic Polymer CPAM Dispersing Agent For Paper Making. Cationic Polyacrylamide Water Soluble Polymers With High Molecular Weight . 100% Purity Cationic Polyacrylamide Powder For Paper Making ...

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  • china polyacrylamide hydrolyzed polyacrylamide

    China Polyacrylamide Hydrolyzed, Polyacrylamide Hydrolyzed. China Polyacrylamide Hydrolyzed manufacturers - Select 2020 high quality Polyacrylamide Hydrolyzed products in best price from certified Chinese Polyacrylamide manufacturers, Water Treatment Polyacrylamide suppliers, wholesalers and …

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  • Materials | Free Full-Text | Biodegradation of Some ...

    2020-7-11 · Properties. Polyacylamides are high molecular weight water soluble or swellable polymers formed from acrylamide or its derivatives. Their glass transition temperature is well above room temperature (> 400 K). The only commercially important polyacrylamide is poly (2-propenamide) which is simply called polyacrylamide or PAM [-CH 2 CH (CONH 2 )-].

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  • Biodegradation of the cross-linked copolymer of

    2016-1-28 · Chemical cross-linking and the high molecular weight of superabsorbent copolymers (SAPs) are the two main causes of their resistance to biodegradation. However, SAP particles are colonized by microorganisms. For the purposes of this study, the dry technical copolymer of acrylamide and potassium acrylate containing 5.28 % of unpolymerized monomers was wrapped in a geotextile and incubated in ...

    Get Price
  • Transfer and degradation of polyacrylamide-based ...

    2014-9-26 · The aim of this review was to summarize information and scientific data from the literature dedicated to the fate of polyacrylamide (PAM)-based flocculants in hydrosystems. Flocculants, usually composed of PAMs, are widely used in several industrial fields, particularly in minerals extraction, to enhance solid/liquid separation in water containing suspended matter.

    Get Price
  • Polyacrylamide Gel Electrophoresis | Cleaver Scientific

    2010-11-20 · High effectiveness and low cost of PAM for erosion control and infiltration management, coupled with easier implementation than traditional conservation measures, has resulted in rapid adoption. About 800,000 ha of US irrigated land use PAM for erosion and/or infiltra-tion management. In recent years, PAM has been deployed for uses beyond

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  • POLYACRYLAMIDE IN AGRICULTURE AND

    2021-1-23 · preparations of Polyacrylamide is 30,000 to 12 milli~n.'~' When using small quantities of this material, high viscosities may be obtained in aqueous systems.(6i7) A 1 % aqueous solution of a cosmetic formulation containing Polyacrylamide had a pH of 6.5. Aqueous solutions of Polyacrylamide are stable over a

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  • Final Report on the Safety Assessment of Polyacrylamide

    2014-12-1 · A biodegradation level of 61,27%, 59,35% of methane concentration in sample’s evolved gas and a medium’s finale pH of 7,71 in sample’s vessels, reveal the extruded polymer´s capacity to be anaerobically degraded under thermophilic- high solid concentration conditions. Keywords. Starch

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  • Biodegradation of Polyethers (Polyethylene Glycol ...

    Exploring multi potential uses of marine bacteria; an integrated approach for PHB production, PAHs and polyethylene biodegradation. Mohanrasu K(1), Premnath N(2), Siva Prakash G(1), Sudhakar M(3), Boobalan T(2), Arun A(4).

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  • Oxidative Pathway for the Biodegradation of

    The first report of the biodegradation of high-MW PAHs was presented in 1975. Gibson et al. identified two products of BαP metabolism – cis -9,10-dihydroxy-9,10-dihydro-benzo[α]pyrene and cis -7,8-dihydroxy-7,8-dihydrobenzo[α]pyrene – from the culture solution of a mutant Beijerinckia sp. strain when it grew with succinate and biphenyl ...

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  • Biodegradation of cypermethrin by immobilized

    Biodegradation of such chemicals by microorganisms may provide an cost-effective method for their detoxification. We have investigated the degradation of cypermethrin by immobilized cells of Micrococcus sp. strain CPN 1 in various matrices such as, polyurethane foam (PUF), polyacrylamide…

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  • Novel Alkylsulfatases Required for Biodegradation

    Recent reports show that contrary to common perception, branched alkyl sulfate surfactants are readily biodegradable in standard biodegradability tests. We report here the isolation of bacteria capable of biodegrading 2-butyloctyl sulfate and the identification of novel enzymes that initiate the process. Enrichment culturing from activated sewage sludge yielded several strains capable of ...

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  • Biodegradation of Polyester Polyurethane by

    2011-9-1 · The resulting SDS-polyacrylamide gel was visualized using a Fujifilm FLA-5100 fluorescent bed scanner with excitation at 532 nm and a 570-nm emission filter. ... in 1-liter cultures of PUR-L min minimal medium and PDB rich medium were concentrated and purified to approximately 90% purity by gel filtration chromatography (data not shown) using a ...

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  • Biodegradation of Palm-based 9,10-Dihydroxystearic

    2015-10-28 · Biodegradation of Palm-based 9,10-Dihydroxystearic Acid (DHSA) ... The purity of the sample is between 85 and 95%. It has been characterized by chromatographic and spectroscopic ... hence liquid sample of high concentration can be measured directly without dilution.

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  • Biodegradation and Abrasive Wear of Nano

    2011-11-1 · However, the material innovations are not exactly related to particle size, but to the possibility of increasing the nanofiller load in restorative materials, 2 leading to better mechanical behavior of materials. 3 Some studies have shown that nanocomposites presented higher surface hardness values and lower brushing abrasive wear than ...

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  • Glyphosate biodegradation and potential soil ...

    2015-11-19 · Glyphosate biodegradation and soil bioremediation by Bs-15 14719 Genetics and Molecular Research 14 4: 14717-14730 2015 FUNEC-R www.funpecrp.com.br conducted to isolate pure bacterial strains with degrading capability for potential uses such as the removal of glyphosate from soil and bioremediation of glyphosate-contaminated soils

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  • Enhanced biodegradation of phenol by magnetically ...

    2018-7-5 · Aromatic compounds are abundant in aqueous environments due to natural resources or different manufacturer’s wastewaters. In this study, phenol degradation by the yeast, Trichosporon cutaneum ADH8 was compared in three forms namely: free cells, nonmagnetic immobilized cells (non-MICs), and magnetically immobilized cells (MICs). In addition, three different common immobilization …

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  • Simultaneous and stoichiometric purification of

    2018-6-25 · Next-generation sequencing analysis of 64-plex 70 nt purification products show a median 78% purity, a significant improvement over polyacrylamide gel electrophoresis and high pressure liquid ...

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  • Polyacrylamide Powder at Rs 270/kilogram |

    2011-8-1 · Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) is a technique used to move charged molecules through a gel matrix by means of an electric current. This procedure is used to determine protein subunit composition, verify homogeneity of the protein sample, and purify proteins for use in other applications.

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  • uses of high purity polyacrylamide degradation and its ...

    Literature on Polyacrylamide Gels | Linda Chalker . 2013-11-7 · industrial purposes and transportation does not require high standards of purity, whereas other uses, such as drinking, recreation, and habitats for aquatic organisms, rely on higher levels of purity.

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  • Novel Alkylsulfatases Required for Biodegradation of

    Recent reports show that contrary to common perception, branched alkyl sulfate surfactants are readily biodegradable in standard biodegradability tests. We report here the isolation of bacteria capable of biodegrading 2-butyloctyl sulfate and the identification of novel enzymes that initiate the process. Enrichment culturing from activated sewage sludge yielded several strains capable of ...

    Get Price
  • Polyacrylamide Emulsions Handbook - SNF

    2012-7-22 · Polyacrylamide Emulsions Handbook 2-2 Storage and handling of emulsions : basic principles Emulsions must be stored inside a building at a constant temperature between 5°C and 30°C. During the storage and handling, the emulsion must not be contaminated by water.

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  • Biodegradation of Polyethers (Polyethylene Glycol ...

    China Polyacrylamide Hydrolyzed, Polyacrylamide Hydrolyzed. China Polyacrylamide Hydrolyzed manufacturers - Select 2020 high quality Polyacrylamide Hydrolyzed products in best price from certified Chinese Polyacrylamide manufacturers, Water Treatment Polyacrylamide suppliers, wholesalers and …

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  • china polyacrylamide hydrolyzed polyacrylamide

    Biodegradation of such chemicals by microorganisms may provide an cost-effective method for their detoxification. We have investigated the degradation of cypermethrin by immobilized cells of Micrococcus sp. strain CPN 1 in various matrices such as, polyurethane foam (PUF), polyacrylamide…

    Get Price
  • Biodegradation of cypermethrin by immobilized cells

    2020-1-21 · Subsequently, the residue extract was concentrated until nearly dry under a gentle stream of high purity N 2 gas. The recovery rate of the extraction was greater than 90%. The recovery rate of the ...

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  • Enzyme activities during Benzo[a]pyrene degradation

    2018-5-18 · Cationic polyacrylamide copolymers (PAMs) are used for sludge dewatering in municipal waste water treatment and might enter the environment by spreading of the sludge on agricultural land. Concern has been expressed since little is known about the degradation of PAMs in soils. To obtain detailed information on the polymer’s fate in the soil compartment, the degradation of 14C …

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  • Cationic polyacrylamide copolymers (PAMs):

    About products and suppliers: Find pure and original acrylamide and acrylic acid solutions at Alibaba.com at cheap prices and unbelievable deals.acrylamide and acrylic acid are important chemical agents involved in various distinct purposes both industrially and commercially. They are also useful in applications such as gardening, the pharmaceutical industry, and the food industry too.

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