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Microbial degradation of polyacrylamide and the deamination product polyacrylate

1/4/2019 · 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

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Biodegradation of partially hydrolyzed polyacrylamide by bacteria isolated from production water after polymer flooding in an oil field

Biodegradation of HPAM may be an ef … 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

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Degradation of Polyacrylamide: A Review | Scientific.Net

It is maybe an efficient mean to solve it with the degradation of polyacrylamide. So, this paper reviews the lately development on the research of the degradation of polyacrylamide, especially including ultrasonic degradation, thermal

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Waste-Activated Sludge Fermentation for Polyacrylamide Biodegradation Improved by Anaerobic Hydrolysis and Key Microorganisms Involved in

6/7/2015 · 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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Biodegradation of low molecular weight polyacrylamide under aerobic and anaerobic conditions: effect of the molecular weight | Water Science

15/1/2020 · Abstract. The biodegradation of polyacrylamide (PAM) includes the hydrolysis of amino groups and cleavage of the carbon chain; however, the effect of molecular A previous study showed that PAM with a molecular weight of 2.2 × 10 7 Da was removed

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Biodegradation of low molecular weight polyacrylamide under aerobic and anaerobic conditions: effect of the molecular weight

The biodegradation of polyacrylamide includes the hydrolysis of amino groups and cleavage of carbon chain, however, the effect of molecular weight on the biodegradation needs further investigations.

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Enzymatic degradation of polyacrylamide in aqueous solution with peroxidase and H2O2 – Gilbert – 2017 – Journal of Applied Polymer Science – Wiley

10/11/2016 · Polyacrylamides are often used in water‐based hydraulic fracturing for natural gas and oil production. However, residual polymer remaining in the fractured rock can limit production. A novel approach for degrading partially hydrolyzed polyacryla

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biodegradation of hydrolyzed polyacrylamide by the combined | Hot quality water treatment chemical products PAM and PAC

Biodegradation for hydrolyzed polyacrylamide in the anaerobic baffled reactor combined aeration tank. Highlights•HPAM removal efficiency was evaluated by multiple testing means.•Molecular weight of products was about 1/5000 of the original HPAM

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Bioelectricity-assisted partial degradation of linear polyacrylamide in a bioelectrochemical system – Peeref

Polyacrylamide, Bioelectrochemical system, Partial degradation, Carbon chain Journal APPLIED MICROBIOLOGY AND BIOTECHNOLOGY Volume 99, Issue 2, Pages 947-956 Publisher Online 2014-09 DOI 10.1007/s00253-014-6029-4 References

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Polyacrylamide

Polyacrylamide (abbreviated as PAM) is a polymer with the formula (-CH2CHCONH2-). It has a linear-chain structure. PAM is highly water-absorbent, forming a soft gel when hydrated. In 2008, an estimated 750,000,000 kg were produced, mainly for

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Biodegradation of Partially Hydrolyzed Polyacrylamide HPAM Using Bacteria Isolated from Omani Oil Fields | SPE EOR Conference at Oil and Gas West

26/3/2018 · In present study the biodegradation of partially hydrolyzed polyacrylamide (HPAM) by bacterial strains isolated from Omani oil fields was analyzed. HPAMs are extensively used in oil fields for enhanced oil recovery operations. The produced water

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Biodegradation of polyacrylamide by bacteria isolated from activated sludge and oil-contaminated soil. – Abstract – Europe PMC

30/10/2009 · Polyacrylamide (PAM), a linear water soluble polymeric compound with high molecular weight, is extensively used for oil production in Cooking. Compared with the physico-chemical degradation of PAM, there is no acrylamide monomer, which causes

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Biodegradation of hydrolyzed polyacrylamide by the combined expanded granular sludge bed reactor-aerobic biofilm reactor biosystem and key

1/9/2018 · Biodegradation of partially hydrolyzed polyacrylamide by bacteria isolated from production water after polymer flooding in an oil field J. Hazard. Mater. , 184 ( 1 ) ( 2010 ) , pp. 105 – 110

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Biodegradation of polymers – NOPR: Home

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

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High temperature utilization of PAM and HPAM by microbial communities enriched from oilfield produced water and activated sludge | AMB Express

9/4/2019 · Non-hydrolyzed polyacrylamide (PAM) and partially hydrolyzed polyacrylamide (HPAM) are commonly used polymers in various industrial applications, including in oil and gas production operations. Understanding the microbial utilization of such

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

ORIGINAL PAPER 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

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EUROPEAN COMMISSION JOINT RESEARCH CENTRE

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

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Biodegradation of partially hydrolyzed polyacrylamide by bacteria isolated from production water after polymer flooding in an oil field

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

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Biodegradation of partially hydrolyzed polyacrylamide by bacteria isolated from production water after polymer flooding in an oil field. – CAB Direct

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

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

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. Biodegradati

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