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how to use biodegradation of polyacrylamide

  • Biodegradation of Polyacrylamide and Its

    2017-5-4 · Biodegradation of PAM and its derivatives has been studied only in the last two decades, with most emphasis on acrylamide biodegradation. Microorganisms have been shown to utilize, not only acrylamide, but also PAM and its derivatives as the sole source of nitrogen and/or carbon under aerobic as well as anaerobic conditions.

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  • Biodegradation of Polyacrylamide and Its

    2017-6-1 · 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. Biodegradation of PAM and its derivatives has been studied only in the last two decades, with most emphasis on acrylamide ...

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  • Polyacrylamide degradation and its implications in ...

    2018-9-7 · He, Q. & Dong, B. Biodegradation of polyacrylamide by anaerobic digestion under mesophilic condition and its performance in actual dewatered sludge system. Bioresour. Technol. 153 , 55–61 (2014).

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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 Partially Hydrolyzed

    2018-3-26 · Biodegradation of HPAM by microbes may be an efficient way to solve those problems. Microbial biodegradation is considered an environmentally friendly safe technique. The isolation of microbes that are able to degrade HPAM from the oil field produced water was investigated in this study.

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  • Biodegradation of hydrolyzed polyacrylamide by

    2018-9-1 · Whether microorganisms can break down polyacrylamide (PAM) and use it as nitrogen or carbon source has always been a concern for researchers, and previous studies found that some microorganisms could grow and metabolize in aqueous solution containing PAM or HPAM.

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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 ).

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  • Degradation of Polyacrylamide: A Review |

    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 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 670 mg L(-1), and the hydraulic retention time was increased at the same time from 1 d to 6 d during the six-phase of the 43 d …

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  • Kinetics and thermodynamics of biodegradation of ...

    Kinetics and thermodynamics of hydrolyzed polyacrylamide (HPAM) biodegradation in anaerobic and aerobic activated sludge biochemical treatment systems were explored to determine the maximum rate and feasibility of HPAM biodegradation. The optimal nutrient proportions for HPAM biodegradation were determined to be 0.08 ...

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  • 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. Biodegradation of PAM and its derivatives has been studied only in the last two decades, with most emphasis on acrylamide biodegradation.

    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 ...

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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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  • 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 .

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  • Anaerobic biodegradation of partially hydrolyzed ...

    2018-3-3 · 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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  • Combination of biochar and immobilized bacteria ...

    Polyacrylamide (PAM) has been used extensively due to its well-known stable chemical properties, but limited information is available on the biodegradation of soil-containing PAM. In this work, sufficient degradation of PAM was achieved via the addition of the Klebsiella sp. PCX-biochar composite to PAM-containing soil, due to the synergic effect of bio-augmentation and bio-stimulation.

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  • Biodegradation of hydrolyzed polyacrylamide by a

    2019-5-18 · Biodegradation of hydrolyzed polyacrylamide by a Bacillus megaterium strain SZK-5: Functional enzymes and antioxidant defense mechanism. Tianwen Song Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education/Institute for Advanced Ocean Study, Ocean University of China, Qingdao, 266100, China; College of Chemistry and ...

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  • CiteSeerX — Biodegradation of Petroleum

    Results indicated that, for the polyacrylamide (PAM) treatments in soil, there was no significant CO2 production in the headspace of the microcosm within the experimental time period. Total organic carbon values obtained for the initial and final soil showed no significant PAM biodegradation within a …

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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 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 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 partially hydrolyzed polyacrylamide

    2016-3-29 · 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 ...

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  • Transfer and degradation of polyacrylamide based ...

    2021-6-13 · 34 polymers composed of polyacrylamide (PAM) (Taylor et al., 2002). PAM is a polymer with high 35 molecular weight, synthetized from acrylamide (AMD) and acrylic acid/acrylate (AA) (Scott et al., 1996; 36 Caulfield et al., 2002). The use of flocculants enables to …

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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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  • 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
  • Waste-Activated Sludge Fermentation for

    2015-7-6 · Dai, X., Luo, F., Zhang, D. et al. Waste-Activated Sludge Fermentation for Polyacrylamide Biodegradation Improved by Anaerobic Hydrolysis and Key Microorganisms Involved in Biological ...

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  • Spectrophotometric Determination of Substrate

    Study on biodegradation of hydrolyzed polyacrylamide in polymer flooding produced wastewater 聚合物驱采出水中聚丙烯酰胺的微生物联合降解作用研究 A new spatial-dispersal model on wind-borne herbaceous plant seeds 风传草本植物种子空间传播新模型

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  • Spectrophotometric Determination of Substrate

    2002-7-27 · Biodegradation of hydrolyzed polyacrylamide by the combined expanded granular sludge bed reactor-aerobic biofilm reactor biosystem and key microorganisms involved in this bioprocess. Bioresource Technology 2018, 263, 153-162. DOI: 10.1016/j.biortech.2018.04.121. Sanket J. Joshi, Raeid M. M. Abed. Biodegradation of Polyacrylamide and Its ...

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  • Biodegradation of partially hydrolyzed

    2016-3-29 · 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 ...

    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

    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 * Corresponding author for this work.

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  • Isolation and Characterization of Polyacrylamide

    2019-4-16 · (2012). Microbial degradation of polyacrylamide by aerobic granules. Environmental Technology: Vol. 33, No. 9, pp. 1049-1054.

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  • Microbial degradation of polyacrylamide by aerobic ...

    2015-10-12 · Polyacrylamide (PAM) Description of Desired Solution: A SpecialChem Client is seeking biodegradable polymer solutions as replacements for current non-readily biodegradable acrylamide based polymer technologies. The key focus would be a replacement or modifications of acrylamide based polymer structure (PAM) and copolymer systems (PAMs).

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  • Seeking Biodegradable Alternatives to Polyacrylamide

    With the wide popularization of polyacrylamide oil-driving technique in oilfields in China,the quantity of polymer-bearing wastewater increases year by year,and the treatment problems increase gradually,as well.Applying biodegradation process to the treatment of polymer-bearing wastewater is feasible.Its core technology is the biodegradation of polyacrylamide.The mechanism and evaluation ...

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  • Research progress in the biodegradation of

    The contamination of acrylamide monomers in the environment through the use of polyacrylamide in china clay, paper industry, and water industry have occur long ago (Bachmann et al., 1992). The exposed workers will have symptoms of numbness, limb pain, peeling skin, and sweating hand. ... Biodegradation is an important removal mechanism for the ...

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  • Acrylamide Uses and Production - UK Essays

    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 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
  • Seeking Biodegradable Alternatives to Polyacrylamide

    2015-10-12 · Polyacrylamide (PAM) Description of Desired Solution: A SpecialChem Client is seeking biodegradable polymer solutions as replacements for current non-readily biodegradable acrylamide based polymer technologies. The key focus would be a replacement or modifications of acrylamide based polymer structure (PAM) and copolymer systems (PAMs).

    Get Price
  • Impact of polyacrylamide treatment on sorptive

    High-molecular-weight, anionic polyacrylamide (PAM) is added to irrigation water to reduce soil erosion during furrow irrigation of crops. The chemical nature of PAM, together with the observation that the polymer can be biotransformed by soil bacteria, led us to question the impact of PAM treatment on the fate of coapplied agrochemicals.

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  • Biodegradation of selected offshore chemicals

    2018-1-17 · Biodegradation of selected offshore chemicals ISBN: 978-82-577-6953-6 Evaluering av nedbrytningsegenskaper for utvalgte offshorekjemikalier ... polyacrylamide, hydrolysed polyacrylamides and polyacrylates are likely to be in the red category. For most compounds and chemical groups, more information is warranted to

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  • Waste-Activated Sludge Fermentation for

    During the anaerobic digestion of dewatered sludge, polyacrylamide (PAM), a chemical conditioner, can usually be consumed as a carbon and nitrogen source along with other organic matter (e.g., proteins and carbohydrates in the sludge). However, a significant accumulation of acrylamide monomers (AMs) was observed during the PAM biodegradation process. To improve the anaerobic hydrolysis of PAM ...

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  • Study on biodegradation of hydrolyzed polyacrylamide in ...

    Study on biodegradation of hydrolyzed polyacrylamide in polymer flooding produced wastewater 聚合物驱采出水中聚丙烯酰胺的微生物联合降解作用研究 A new spatial-dispersal model on wind-borne herbaceous plant seeds 风传草本植物种子空间传播新模型

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  • Polyacrylamide (PAM) - Michigan

    2017-7-21 · Downstream deposition from the use of PAM may require periodic sediment removal to maintain normal functions . References . California Stormwater BMP Handbook, Construction, 2003 Polyacrylamide . PM-5 V2010.2.12

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  • in chile how to control polyacrylamide viscosity ...

    2021-5-20 · furrow erosion control (Lentz et al., 1993). Subsequent use of the terms polyacrylamide, or PAM in this paper, refer to this particular type of polyacrylamide. Environmental regulation, safety, and toxicity concerns associated with PAM and its use in irrigation were reviewed by Seybold (1994) and Barvenik (1994). For Free enquiry

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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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  • Biodegradation of partially hydrolyzed polyacrylamide

    2016-3-29 · 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 ...

    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
  • Microbial degradation of polyacrylamide by aerobic ...

    2019-4-16 · (2012). Microbial degradation of polyacrylamide by aerobic granules. Environmental Technology: Vol. 33, No. 9, pp. 1049-1054.

    Get Price
  • Biodegradation of polymers - NOPR: Home

    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

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  • Biodegradation of hydrolyzed polyacrylamide by the ...

    2018-5-1 · Biodegradation of hydrolyzed polyacrylamide by the combined expanded granular sludge bed reactor-aerobic biofilm reactor biosystem and key microorganisms involved in this bioprocess. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; College of Chemistry and ...

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  • Biodegradation of selected offshore chemicals

    2018-1-17 · Biodegradation of selected offshore chemicals ISBN: 978-82-577-6953-6 Evaluering av nedbrytningsegenskaper for utvalgte offshorekjemikalier ... polyacrylamide, hydrolysed polyacrylamides and polyacrylates are likely to be in the red category. For most compounds and chemical groups, more information is warranted to

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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 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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  • Removal of Acrylamide by Microorganisms | IntechOpen

    2020-6-16 · Biodegradation of partially hydrolyzed polyacrylamide by bacteria isolated from production water after polymer flooding in an oil field, Journal of Hazardous Materials. 青岛市第十届自然科学优秀学术论文三等奖. 44) 崔文林, 孙培艳, 包木太, 马挺, 王维华, 杨晓飞, , ,

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  • Characterization of bacterial diversity and assessing

    Characterization of bacterial diversity and assessing the cyanide biodegradation potential of bacterial isolates from gold processing plants ... and take advantage of the indigenous microorganisms such as bacteria and their ability to use this chemical as a source of ... USA), with a 7% polyacrylamide gel containing 7M urea, in 1.5X TAE buffer ...

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  • (PDF) Evaluation of different lignocellulosic

    Biodegradation, 2011. Jorge Folch-mallol. Download PDF. Download Full PDF Package. This paper. A short summary of this paper ...

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  • A review on the enzymes and metabolites identified

    1 天前 · The use of microorganisms represents an important tool for HMW PAHs bioremediation, so, the understanding of their biochemical pathways facilitates the development of biodegradation strategies. For this reason, the potential role of species of microalgae, bacteria, and microalga-bacteria consortia in the degradation of HMW PAHs is discussed.

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  • Protein-based stable isotope probing (Protein-SIP)

    2008-6-19 · We developed a method to analyze the specific metabolic activity of a single bacterial species within a consortium making use of [13C7]-toluene for metabolic labelling of proteins.

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  • A novel bio-stable 3D porous collagen scaffold for ...

    2018-8-25 · Publication Date 2008 Genre non-fiction Holding Location University of South Florida Resource Identifier 002007396 403813173 E14-SFE0002354 e14.2354 Language

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  • Rapports d'organisations sur le sujet « Naphtalène

    Liste de rapports d’organisations sur le sujet « Naphtalène-2,3-dicarboxaldéhyde (NDA) ». Publications scientifiques : télécharger le texte en pdf. Sujets de recherche.

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  • natural sulphate contamination: Topics by Science.gov

    2018-6-26 · In situ sulphate stimulation of mercury methylation in a boreal peatland: Toward a link between acid rain and methylmercury contamination in remote environments. NASA Astrophysics Data System (ADS) Branfireun, Brian A.; Roulet, Nigel T.; Kelly, Carol. A.; Rudd, John W. M. 1999-09-01. Recent studies have found that 'pristine' peatlands have high peat and pore water methylmercury …

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  • Find MSDS p.28 for Personal Care & Cosmetics

    Personal Care & Cosmetics (MSDS) | Personal Care & Cosmetics formulations, data sheets, MSDS search, specifications and request samples all in one location - Free Access. Register English 简体中文 …

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