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production of polyacrylamide biodegradation

  • Biodegradation of partially hydrolyzed polyacrylamide

    2010-12-15 · 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 Polyacrylamide and Its Derivatives ...

    2017-5-4 · Some fungi and yeasts could degrade 60–80% of acrylamide. The biodegradation of PAM and its derivatives are initiated by the enzyme amidase, either under aerobic or anaerobic conditions, and are further degraded partially or completely by an array of different enzymes.

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  • 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.

    Get Price
  • 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 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.

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  • Biodegradation of low molecular weight

    2020-1-15 · Biodegradation of partially hydrolyzed polyacrylamide by bacteria isolated from production water after polymer flooding in an oil field.

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  • 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.

    Get Price
  • Biodegradation of Partially Hydrolyzed Polyacrylamide

    2018-3-26 · The produced water after polymer flooding poses grave ecological problems, such as it could raise the difficulty of oil–water separation, producing toxic acrylamide that degrades naturally, which threatens the local environment. Biodegradation of HPAM …

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  • 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 source. 19, 86 The amide …

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  • Degradation of Polyacrylamide: A Review | Scientific.Net

    Good economic effects are achieved by the industrial application of polymer in various oil fields. However, some problems of the oil-well production and the waste water treatment come forth with the present of polyacrylamide in the production fluid. It is maybe an efficient mean to solve it with the degradation of polyacrylamide.

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  • 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.

    Get Price
  • 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
  • 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
  • Anaerobic biodegradation of partially hydrolyzed ...

    Anaerobic biodegradation of partially hydrolyzed polyacrylamide in long-term methanogenic enrichment cultures from production water of oil reservoirs Hao Hu, Jin Feng Liu * , Cai Yun Li, Shi Zhong Yang, Ji Dong Gu , Bo Zhong Mu

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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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  • 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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  • Anaerobic biodegradation of partially hydrolyzed ...

    Anaerobic biodegradation of partially hydrolyzed polyacrylamide in long-term methanogenic enrichment cultures from production water of oil reservoirs Hao Hu . Jin-Feng Liu . Cai-Yun Li . Shi-Zhong ...

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  • Waste-Activated Sludge Fermentation for

    2015-7-6 · Bao, M., Chen, Q. & Li, Y. Biodegradation of partially hydrolyzed polyacrylamide by bacteria isolated from production water after polymer flooding in an oil field. J. Hazard.

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  • Waste-Activated Sludge Fermentation for Polyacrylamide ...

    The large production and utilization of PAM release a significant amount of ... PAM . 48, Biodegradation. Waste-Activated Sludge Fermentation for Polyacrylamide Biodegradation Improved by ...

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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
  • ISOLATION, CHARACTERIZATION AND

    2019-12-10 · Production of L-Asparaginase enzyme, effect of pH and temperature on L-asparaginase production, effect of Carbon and Nitrogen sources on L-Asparaginase Production. KEYWORDS: Acrlyamide, Polyacrylamide, Biodegradation, HPLC, and L-asparginase. INTRODUCTION Acrylamide is the building block for the polymer, polyacrylamide and it is a well known

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  • Biodegradation of partially hydrolyzed polyacrylamide

    2016-9-1 · The special function bacteria R2 was screened from hydrolyzed polyacrylamide (HPAM)‐containing wastewater that could use HPAM as the sole carbon source and nitrogen source. Through optimizing the condition of HPAM biodegradation, the removal rate of R2 free strain reached to 41.6% when pH was 7, temperature was 35°C, inoculation quantity (v/v) was 3% and activation time …

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  • Current status on the biodegradability of acrylic

    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 …

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  • Microbial degradation of polyacrylamide by aerobic ...

    2012-4-1 · Biodegradation of partially hydrolyzed polyacrylamide by bacteria isolated from production water after polymer flooding in an oil field. Bao M, Chen Q, …

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  • Cellobiose dehydrogenase-dependent biodegradation

    Hyde, S.M.; Wood, P.M. (1997): A mechanism for production of hydroxyl radicals by the brown-rot fungus Coniophora puteana:Fe(III) reduction by cellobiose dehydrogenase and Fe(II) oxidation at a distance from the hyphae. Microbiology 143, 259–266

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  • Assessment of polyethylene degradation by

    2021-5-24 · From the results of native polyacrylamide gel electrophoresis, the activities of laccase and lignin peroxidase were noticed. Furthermore, extracellular production of biosurfactant has been observed in the Bacillus sp. strain PE3 inoculated mineral salt media and synthetic media with glucose and polyethylene as the carbon source respectively.

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  • Removal of Acrylamide by Microorganisms

    2013-10-7 · production which releases approximately 1 g acrylamide in each liter of effluent [35]. Some reports have indicated that polyacrylamide, in the presence of sunlight and glyphosate, photolytically degrades to acrylamide monomer and this is a direct introduction of acrylamide into agricultural areas [36 …

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  • Spectrophotometric Determination of Substrate

    2019-5-26 · 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
  • 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
  • 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.

    Get Price
  • 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
  • Biodegradation of partially hydrolyzed

    2016-9-1 · The special function bacteria R2 was screened from hydrolyzed polyacrylamide (HPAM)‐containing wastewater that could use HPAM as the sole carbon source and nitrogen source. Through optimizing the condition of HPAM biodegradation, the removal rate of R2 free strain reached to 41.6% when pH was 7, temperature was 35°C, inoculation quantity (v/v) was 3% and activation time …

    Get Price
  • Isolation and Characterization of Polyacrylamide

    1998-11-1 · Anaerobic biodegradation of partially hydrolyzed polyacrylamide in long-term methanogenic enrichment cultures from production water of oil reservoirs. Hu H, Liu JF, Li CY, Yang SZ, Gu JD, Mu BZ. Biodegradation, 29(3):233-243, 03 Mar 2018 Cited by: 1 article | PMID: 29502248

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  • Polyacrylamide as a substrate for microbial amidase

    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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  • Transfer and degradation of polyacrylamide based ...

    2009-8-6 · PREMRAJ & DOBLE: BIODEGRADATION OF POLYMERS 189 water-soluble polymers, such as polyacrylamide and polyacrylic acid. Among the vinyl polymers produced industrially, PVA is the only one known to be mineralized by microorganisms. PVA is water-soluble and biodegradable and hence, used to make water-soluble and biodegradable carriers, which may be

    Get Price
  • Biodegradation of polymers - NOPR: Home

    2020-5-19 · Purification and characterization of alkaline lipase production by Pseudomonas aeruginosa HFE733 and application for biodegradation in food wastewater treatment Jun Hu a, Wenhao Caib, Changgao Wang , ... sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE), the molecular mass was

    Get Price
  • biodegradation of hydrolyzed polyacrylamide by the ...

    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
  • 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
  • Isolation and Characterization of Polyacrylamide

    2007-10-5 · and in the production of adhesives, tapes and gels, including gels used for electrophoresis (USEPA, 1981). The widespread use and indiscriminate discharge of AM and polyacrylamide has led to the contamination of soil (Lande et al., 1979) and water (Croll et al., 1974). The high chronic toxicity of AM makes it an undesirable contami-

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  • Biodegradation of acrylamide employing free and ...

    2009-8-6 · PREMRAJ & DOBLE: BIODEGRADATION OF POLYMERS 189 water-soluble polymers, such as polyacrylamide and polyacrylic acid. Among the vinyl polymers produced industrially, PVA is the only one known to be mineralized by microorganisms. PVA is water-soluble and biodegradable and hence, used to make water-soluble and biodegradable carriers, which may be

    Get Price
  • Biodegradation of polymers - NOPR: Home

    1998-11-1 · Anaerobic biodegradation of partially hydrolyzed polyacrylamide in long-term methanogenic enrichment cultures from production water of oil reservoirs. Hu H, Liu JF, Li CY, Yang SZ, Gu JD, Mu BZ. Biodegradation, 29(3):233-243, 03 Mar 2018 Cited by: 1 article | PMID: 29502248

    Get Price
  • Polyacrylamide as a substrate for microbial amidase in ...

    2019-2-22 · Deterioration of anaerobic digestion can occur with the presence of polyacrylamide (PAM) in waste activated sludge, and little information on mitigating this deterioration is currently available. In this study, simultaneous mitigation of PAM negative effects and improvement of methane production was accomplished by thermal-alkaline pretreatment.

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  • Thermal-alkaline pretreatment of polyacrylamide ...

    2020-5-19 · Purification and characterization of alkaline lipase production by Pseudomonas aeruginosa HFE733 and application for biodegradation in food wastewater treatment Jun Hu a, Wenhao Caib, Changgao Wang , ... sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE), the molecular mass was

    Get Price
  • 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
  • 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.

    Get Price
  • Purification and characterization of alkaline lipase ...

    2020-5-19 · Purification and characterization of alkaline lipase production by Pseudomonas aeruginosa HFE733 and application for biodegradation in food wastewater treatment Jun Hu a, Wenhao Caib, Changgao Wang , ... sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE), the molecular mass was

    Get Price
  • Acrylamide Uses and Production - UK Essays

    Polyacrylamide is an important polymer to produce various compounds with different physical and chemical properties suited for industrial needed. It is estimated that almost 99.9% of acrylamide is used in the production of polyacrylamide in Europe Union (European Commission, 2002).

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  • Biodegradation of Fenpropathrin by

    This study aimed at the biodegradation of fenpropathrin by Rhodopseudomonas sp. strain PSB07-21 cultured under different growth modes. The biomass production, cell surface hydrophobicity and fenpropathrin biodegradation efficiency of the strain PSB07-21 cultured under the photoheterotrophic growth mode were better than that shown by the strain PSB07-21 cultured under the photoautotrophic …

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  • Biodegradation of shellfish wastes and production

    2011-1-12 · Abstract. Biodegradation (2011) 22:939–948 DOI 10.1007/s10532-011-9453-5 OR IGINAL PAPER Biodegradation of shellfish wastes and production of chitosanases by a squid pen-assimilating bacterium, Acinetobacter calcoaceticus TKU024 • • San-Lang Wang Wan-Nine Tseng Tzu-Wen Liang Received: 17 August 2010 Accepted: 4 January 2011 Published online: 12 January 2011 Springer …

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  • Spills of Hydraulic Fracturing Chemicals on

    2021-3-12 · Hydraulic fracturing frequently occurs on agricultural land. Yet the extent of sorption, transformation, and interactions among the numerous organic frac fluid and oil and gas wastewater constituents upon environmental release is hardly known. Thus, this study aims to advance our current understanding of processes that control the environmental fate and toxicity of commonly used …

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