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types of polyacrylamide biodegradation

  • Biodegradation of Polyacrylamide and Its Derivatives ...

    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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  • Microbial degradation of polyacrylamide and the ...

    2019-4-1 · Most studies on the biodegradation of polyacrylamide have been carried out with the homopolymer as the substrate instead of the cationic and anionic varieties. However, the cationic copolymers of acrylamide and acryloyloxyethyltrimethyl ammoniumchloride (AETAC) and of acrylamide and methacrylamidopropyltrimethyl ammoniumchloride (MAPTAC) have been reported to undergo …

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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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  • Biodegradation of Polyacrylamide and Its Derivatives ...

    Biodegradation of Polyacrylamide and Its Derivatives. Although polyacrylamide (PAM) and its derivatives have many useful applications, their release in nature can have impacts on the environment and human health, thus bioremediation approaches for residual PAM are urgently needed.

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  • Degradation of Polyacrylamide: A Review | Scientific.Net

    Biodegradation, Chemical Degradation, Photodegradation, Polyacrylamide, Thermal Degradation, Ultrasonic Degradation

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  • Microbial degradation of polyacrylamide by aerobic

    To deal with polyacrylamide (PAM) wastewater, granular sludge formed in glucose-fed sequencing batch reactors (SBR) was employed to cultivate PAM-degrading granules. Three replicated SBRs were operated with increasing PAM concentration in the influent from 67 to …

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  • Biodegradation of partially hydrolyzed polyacrylamide

    Biodegradation of HPAM may be an efficient way to solve these problems. The biodegradability of HPAM in an aerobic environment was studied. Two HPAM-degrading bacterial strains, named PM-2 and PM-3, were isolated from the produced water of polymer flooding. They were subsequently identified as Bacillus cereus and Bacillus sp., respectively.

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  • Anaerobic biodegradation of partially hydrolyzed ...

    Anaerobic biodegradation of partially hydrolyzed polyacrylamide in long-term methanogenic enrichment cultures from production water of oil reservoirs

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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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  • What is Polyacrylamide|PAM FAQ

    2021-6-2 · Polyacrylamide Knowledge . 1. What is polyacrylamide PAM? Polyacrylamide is a polymer (-CH2CHCONH2-) formed from acrylamide subunits, it is long-chain polymer (same molecule repeating itself many times) designed to attract either positively charged particles (organic materials, such as carbon or human waste) or negatively charged particles (inert materials, such as sand or clay).

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  • Biodegradation of polyacrylamide by bacteria isolated

    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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  • Degradation of Polyacrylamide: A Review | Scientific.Net

    Water-soluble polyacrylamide is commercially available in different domains of industry, such as water purified, paper making, pharmacy, agriculture and oil exploitation. Especially polyacrylamide is used for polymer displacement, which can enhance oil recovery through increasing the sweeping efficiency. Good economic effects are achieved by the industrial application of polymer in various oil ...

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  • Microbial degradation of polyacrylamide and the ...

    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 …

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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.

    Get Price
  • Biodegradation of partially hydrolyzed polyacrylamide

    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. The biodegradability of HPAM in an aerobic environment was ...

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  • Biodegradable flocculants based on polyacrylamide

    2014-9-1 · Biodegradation of the graft copolymers as well as the amylopectin was carried out by enzymatic cleavage using α-amylase. α-Amylase is the enzyme which cleaves the 1,4-α-d-glycosidic linkages of the starch backbone , , thereby releasing the glucose residue. The extent of hydrolysis was estimated as the proportion of graft copolymer and ...

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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, papermaking 3, …

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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 dealing with this problem among many other methods available.

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  • What is Polyacrylamide|PAM FAQ

    2021-6-2 · Polyacrylamide Knowledge . 1. What is polyacrylamide PAM? Polyacrylamide is a polymer (-CH2CHCONH2-) formed from acrylamide subunits, it is long-chain polymer (same molecule repeating itself many times) designed to attract either positively charged particles (organic materials, such as carbon or human waste) or negatively charged particles (inert materials, such as sand or clay).

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  • Spectrophotometric Determination of Substrate

    2019-5-26 · Polyacrylamides (PAMs) have wide application in many industries and in agriculture. Scientific research and industrial applications manifested a need for a method that can quantify substrate-borne PAM. The N-bromination method (a PAM analytical technique based on N-bromination of amide groups and spectrophotometric determination of the formed starch−triiodide complex), which was …

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  • Hydrolyzed polyacrylamide biodegradation and

    2016-5-1 · Hydrolyzed polyacrylamide biodegradation and mechanism in sequencing batch biofilm reactor ... These results indicate that different types of microorganisms had different effects on the HPAM biodegradation. A new strategy was proposed in this study using a sequencing batch biofilm reactor (SBBR) applied to treat HPAMs. ...

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  • Degradation of Polyacrylamide: A Review | Scientific.Net

    Water-soluble polyacrylamide is commercially available in different domains of industry, such as water purified, paper making, pharmacy, agriculture and oil exploitation. Especially polyacrylamide is used for polymer displacement, which can enhance oil recovery through increasing the sweeping efficiency. Good economic effects are achieved by the industrial application of polymer in various oil ...

    Get Price
  • Biodegradation for hydrolyzed polyacrylamide in the ...

    Abstract Hydrolyzed polyacrylamide (HPAM), which is extensively used for oil extraction in an oilfield, produces waste water that enters the groundwater system posing a threat to the safety of plants and animals. Among the many methods to removal the HPAM, the biodegradation based screened bacteria and sludge is an efficient method. Combined anaerobic and aerobic biological processes were used ...

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  • Biodegradation of polyacrylamide by bacteria isolated

    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.

    Get Price
  • Biodegradation of partially hydrolyzed polyacrylamide

    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. The biodegradability of HPAM in an aerobic environment was ...

    Get Price
  • Biodegradable flocculants based on polyacrylamide

    2014-9-1 · Synthesis of amylopectin grafted polyacrylamide (AP-g-PAM) and poly(N,N-dimethylacrylamide) (AP-g-PDMA) was carried out by Ce 4+ in water medium. The reaction conditions for maximum grafting was optimized by varying the reaction variables, including the concentration of monomers, ceric ammonium nitrate (CAN), amylopectin, reaction time and temperature.

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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 waste …

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  • Advanced treatment for actual hydrolyzed

    2019-1-15 · Biodegradation of hydrolyzed polyacrylamide by the combined expanded granular sludge bed reactor-aerobic biofilm reactor biosystem and key microorganisms involved in this bioprocess Bioresour. Technol. , 263 ( 2018 ) , pp. 153 - 162

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  • Multifunctional Biodegradable Polyacrylamide

    2019-12-12 · We describe here the development of multifunctional nanocarriers, based on amine-functionalized biodegradable polyacrylamide nanoparticles (NPs), for cancer theranostics, including active tumor targeting, fluorescence imaging, and photodynamic therapy. The structural design involves adding primary amino groups and biodegradable cross-linkers during the NP polymerization, while …

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  • Transfer and degradation of polyacrylamide based ...

    2021-6-13 · 1 Title: Transfer and degradation of polyacrylamide based flocculants in hydrosystems: a review 2 3 Authors: A. G. Guezennec1, C. Michel1, K.Bru1, S. Touze1, N. Desroche2, I. Mnif3, M. Motelica-Heino4 4 1 BRGM 5 2 Nexidia SAS, 15 Rue de Mayence 21000 DIJON France 36 Université de Nice 7 4 ISTO, UMR 7327 CNRS-Université d’Orléans, 1A rue de la Férollerie, 45071 Orléans cedex 2

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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.

    Get Price
  • Isolation and Characterization of Polyacrylamide

    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 waste …

    Get Price
  • Current status on the biodegradability of acrylic

    2021-1-29 · the most used AP are polyacrylamide, polyacrylic acid, polymethyl methacrylates, and polyacrylonitrile. Although no informa-tion 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 ... biodegradation, displayed by bacteria and fungi, and the bio-

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  • Current status on the biodegradability of acrylic

    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. The biodegradability of HPAM in an aerobic environment was...

    Get Price
  • Biodegradation of partially hydrolyzed

    2014-9-6 · The wide application of water-soluble linear polyacrylamides (PAMs) can cause serious environmental pollution. Biological treatment of PAMs receives very limited efficiency due to their recalcitrance to the microbial degradation. Here, we show the bioelectrochemical system (BES) can be used as an effective strategy to improve the biodegradation efficiency of PAMs.

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  • Bioelectricity-assisted partial degradation of linear ...

    2012-11-22 · adsorption to soil particles and biodegradation). Table 3.1 Summary of PECs for acrylamide Scenario PECwater (µg/l) PECair (mg/m3) Acrylamide production (including polyacrylamide production) 0.05-<10 7.6.10-6-2.3 .10-6 Polyacrylamide use as a coagulant and …

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  • Isolation and Characterization of Polyacrylamide

    Biodegradation of Industrial Oil-Polluted Wastewater in Egypt by Bacterial Consortium Immobilized in Different Types of Carriers Aliaa M. El-Borai1*, Khaled M. Eltayeb2, Alaa R. Mostafa2, Samy A. El-Assar1 1Botany and Microbiology Department, Faculty of Science, Alexandria University, Egypt

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  • Biodegradation of polyacrylamide by anaerobic

    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.

    Get Price
  • Biodegradation of partially hydrolyzed polyacrylamide

    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. The biodegradability of HPAM in an aerobic environment was...

    Get Price
  • (PDF) Biodegradation of naphthalene in

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

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  • POLYACRYLAMIDE GEL ENTRAPMENT OF ADENYLATE

    2018-8-31 · Polyacrylamide gel entrap-ment has both advantages and disadvantages relative to other methods of im-mobilization. On the one hand, polyacrylamide is inexpensive, hydrophilic, and well-characterized [5] ;gel formation is easily carried out; polyacryl-amide is resistant to biodegradation; the gel network protects incorporated

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  • The isolation of a hydrolyzed polyacrylamide (HPAM ...

    2019-11-26 · Q.G. Chen, M.T. Bao, M. Liu, Study on HPAM biodegradation in the wastewater of an oilfield, Appl. Mech. Mater., 364 (2013) 640–644. N. Sharmaa, A. Tiwaria, Nanomagnetite-loaded poly (acrylamide-co-itaconic acid) hydrogel as adsorbent for effective …

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  • Biodegradation of superabsorbent polymers in soil ...

    2000-6-1 · Biodegradation of two superabsorbent polymers, a crosslinked, insoluble polyacrylate and an insoluble polyacrylate polyacrylamide copolymer, in soil by the white-rot fungus, Phanerochaete chrysosporium was investigated. The polymers were both solubilized and mineralized by the fungus but solubilization and mineralization of the copolymer was much more rapid than of the polyacrylate. Soil ...

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  • Biodegradation of Some Organic Materials in Soils

    2018-10-2 · The hydrogel compositions were prepared on the basis of 5 types of strongly swelling polymers: №1—acryl hydrophilic Aquasorb preparation (France) with high degree of swelling (HDS) in pure water (700–1000 gH 2 O/g); №2—radiation-cross-linked technical polyacrylamide, synthesized in Institute of Chemical Physics of the Russian Academy ...

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  • EUROPEAN COMMISSION JOINT RESEARCH CENTRE

    2012-11-22 · adsorption to soil particles and biodegradation). Table 3.1 Summary of PECs for acrylamide Scenario PECwater (µg/l) PECair (mg/m3) Acrylamide production (including polyacrylamide production) 0.05-<10 7.6.10-6-2.3 .10-6 Polyacrylamide use as a coagulant and …

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  • 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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  • The principle and method of SDS-polyacrylamide

    Polymerized acrylamide (polyacrylamide) forms a mesh-like matrix suitable for the separation of proteins of typical size. The strength of the gel allows easy handling. Polyacrylamide gel electrophoresis of SDS-treated proteins allows researchers to separate proteins based on their length in an easy, inexpensive, and relatively accurate manner.

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  • (PDF) Biodegradation of naphthalene in

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

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  • Polyacrylamide (PAM) and Soils

    polyacrylamide (PAM) compounds had negative charge density of 40J > 21J > 2J, and the three polysaccharide compounds (guar) had a higher positive charge (T-4141), lower positive charge

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  • POLYACRYLAMIDE GEL ENTRAPMENT OF ADENYLATE

    2018-8-31 · Polyacrylamide gel entrap-ment has both advantages and disadvantages relative to other methods of im-mobilization. On the one hand, polyacrylamide is inexpensive, hydrophilic, and well-characterized [5] ;gel formation is easily carried out; polyacryl-amide is resistant to biodegradation; the gel network protects incorporated

    Get Price
  • high molecular weight hydrolyzed polyacrylamides

    2014-12-15 · types of monosaccharides, and repeatedly an efficient resolution was achieved. As an example of a complex structure, the monosaccharide constituents of the delipidated bacterial lipopolysaccharides (dLPS) of V. cholerae O135 were effectively separated after acid hydrolysis. Key words: Polyacrylamide Chromatography, Monosaccharides, Separation ...

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  • Biodegradable Polymers | IntechOpen

    Other types of composition(s) Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH ...

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  • cationic flocculant(polyacrylamide) used for

    2019-8-28 · Congcong Zhang, Lanmei Zhao, Mutai Bao*, Jinren Lu.Potential of hydrolyzed polyacrylamide biodegradation to the final products through regulating its own nitrogen transformation in different dissolved oxygen systems .Bioresource Technology.2018, 256: 61-68

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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. The biodegradability of HPAM in an aerobic environment was ...

    Get Price
  • Biodegradable Polymers | IntechOpen

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

    Get Price
  • (PDF) Biodegradation of naphthalene in

    Polyacrylamide and water quality effects on infiltration in sandy loam soils. Soil Science Society of America Journal 70(2): 643-650. Ashour, I.A., M.H. Ali, F.A. Hashem and A. Sayed. 2004. Effect of biodegradation of some soil conditioners on soil properties under saline water conditions. Annals of Agricultural Science, Moshtohor 42(1): 401-413.

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  • Polyacrylamide Manufacturers & Suppliers | Brovie

    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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  • Literature on Polyacrylamide Gels | Linda Chalker

    2020-1-30 · Polyacrylamide hydrogel (PAAG) was once used as an important injection for breast augmentation though it has been banned in China for more than 10 years. Secondary breast deformity after removing PAAG poses a challenging problem. The aim of this article is to introduce types of breast deformity induced by two types of PAAG based on MRI examination and corresponding treatment …

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  • Polyacrylamide Emulsions Handbook - SNF

    Other types of composition(s) Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH ...

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  • Different Types of Breast Deformity Induced by Two

    Define polyacrylamide. polyacrylamide synonyms, polyacrylamide pronunciation, polyacrylamide translation, English dictionary definition of polyacrylamide. n. A water-soluble white solid polyamide, , related to acrylic acid. ... The are three types of product segments in …

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  • Acrylamide - Registration Dossier - ECHA

    2019-8-28 · Congcong Zhang, Lanmei Zhao, Mutai Bao*, Jinren Lu.Potential of hydrolyzed polyacrylamide biodegradation to the final products through regulating its own nitrogen transformation in different dissolved oxygen systems .Bioresource Technology.2018, 256: 61-68

    Get Price