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types of biodegradation of polyacrylamide

  • 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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  • [Study on biodegradation of polyacrylamide]

    Phanerochaete chrysosporium was introduced into biodegradation of polyacrylamide(PAM), and effects of glucose amount, pH, N concentration, Mn2+ concentration and biodegradation time on biodegradation of PAM were studied. Results show that Phanerochaete chrysosporium has special abilities of enzyme catalysis biodegradation of PAM.

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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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  • 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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  • Degradation of Polyacrylamide: A Review | Scientific.Net

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

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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 , …

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  • Biodegradation of hydrolyzed polyacrylamide by the ...

    2018-9-1 · Biodegradation of hydrolyzed polyacrylamide by the combined expanded granular sludge bed reactor-aerobic biofilm reactor biosystem and key microorganisms involved in this bioprocess Author links open overlay panel Tianwen Song a b Shanshan Li a …

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  • Biodegradation of Partially Hydrolyzed Polyacrylamide

    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 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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  • Transfer and degradation of polyacrylamide-based ...

    2014-9-26 · Due to the ability of PAM to adsorb onto mineral particles, its transport in surface water, groundwater, and soils is rather limited and restricted to specific conditions. PAM can also be a subject of biodegradation, photodegradation, and mechanical degradation, but most of the studies report slow degradation rates without AMD release.

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  • [Study on biodegradation of polyacrylamide]

    Phanerochaete chrysosporium was introduced into biodegradation of polyacrylamide(PAM), and effects of glucose amount, pH, N concentration, Mn2+ concentration and biodegradation time on biodegradation of PAM were studied. Results show that Phanerochaete chrysosporium has special abilities of enzyme c …

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  • Biodegradation of Polyacrylamide and Its

    TY - JOUR. T1 - Biodegradation of Polyacrylamide and Its Derivatives. AU - Joshi, Sanket J. AU - Abed, Raeid M.M. PY - 2017/6/1. Y1 - 2017/6/1. N2 - 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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  • Biodegradation of polyacrylamide by anaerobic

    2014-2-1 · Before biodegradation, two peaks were found in the initial PAM solution, with the retention times of 19.91 and 23.02 min. In the HPAM sample after biodegradation, the MW of PAM decreased dramatically, and just two peaks with retention times of 22.78 and …

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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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  • 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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  • Biodegradation of hydrolyzed polyacrylamide by a

    Biodegradation of hydrolyzed polyacrylamide by a Bacillus megaterium strain SZK-5: Functional enzymes and antioxidant defense mechanism. Author links open overlay panel Tianwen Song a b Shanshan Li a b Yifeng Lu c Dong Yan a b Peiyan Sun d Mutai Bao a b Yang Li a e. Show more. Share. Cite.

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  • Kinetics and thermodynamics of biodegradation of ...

    2016-9-1 · Waste-activated sludge fermentation for polyacrylamide biodegradation improved by anaerobic hydrolysis and key microorganisms involved in biological polyacrylamide removal. Sci. Rep., 5 (2015), p. 11675. View Record in Scopus Google Scholar. El-Mamouni et al., 2002.

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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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  • 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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  • Kinetics and thermodynamics of biodegradation of ...

    2016-5-19 · 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 ...

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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
  • 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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  • 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.

    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
  • Isolation and Characterization of 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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  • Shear-Induced Degradation of Linear Polyacrylamide ...

    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 ...

    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 polymers - NOPR: Home

    2021-5-9 · where W d is the weight of the dried SAP and W s is the weight of the swollen sample.. Biological Degradation. The biodegradations of P(KA) and P(Am-co-KA) were carried out using a soil burial method (Sharma et al. 2014).Five samples (150 g each) of each swollen gel were separately put in a 14 × 14 cm linen bag and buried in the natural garden soil at a depth of 10 cm with a 3-cm spacing ...

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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 …

    Get Price
  • [Study on biodegradation of polyacrylamide]. -

    2006-1-1 · Phanerochaete chrysosporium was introduced into biodegradation of polyacrylamide(PAM), and effects of glucose amount, pH, N concentration, Mn2+ concentration and biodegradation time on biodegradation of PAM were studied. Results show that Phanerochaete chrysosporium has special abilities of enzyme catalysis biodegradation of 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 hydrolyzed polyacrylamide by the ...

    Biodegradation of hydrolyzed polyacrylamide by the combined expanded granular sludge bed reactor-aerobic biofilm reactor biosystem and key microorganisms involved in this bioprocess. Song T(1), Li S(1), Ding W(1), Li H(1), Bao M(2), Li Y(3).

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  • Isolation and Characterization of Polyacrylamide

    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

    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.

    Get Price
  • Bioelectricity-assisted partial degradation of linear ...

    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 polymers ...

    2021-1-15 · Biodegradation of hydrolyzed polyacrylamide by a Bacillus megaterium strain SZK-5: functional enzymes and antioxidant defense mechanism Chemosphere , 231 ( 2019 ) , pp. 184 - 193 Article Download PDF View Record in Scopus Google Scholar

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  • Hydrolyzed polyacrylamide-containing wastewater

    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
  • 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
  • Figure 1 | Biodegradation of Polyacrylamide and Its ...

    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 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 ...

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  • 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 …

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  • Isolation and Characterization of Polyacrylamide

    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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  • Anaerobic biodegradation of partially hydrolyzed ...

    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 polyacrylamide by anaerobic

    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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  • Study on biodegradation of hydrolyzed polyacrylamide in ...

    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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  • advanced treatment for actual hydrolyzed

    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 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.

    Get Price
  • 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 hydrolyzed polyacrylamide by a

    Biodegradation of hydrolyzed polyacrylamide by a Bacillus megaterium strain SZK-5: Functional enzymes and antioxidant defense mechanism Song, Tianwen Li, Shanshan

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  • Literature on Polyacrylamide Gels | Linda Chalker

    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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  • Evaluation of the Flocculation Characteristics of ...

    2021-3-12 · This manuscript illustrates the feasibility of polyacrylamide grafted xanthan gum/silica based nanocomposite toward its potential application as high performance flocculant for treatment of synthetic effluents and mine wastewater. The flocculation performance of the nanocomposite was systematically evaluated by floc size measurement as well as by traditional turbidity and settling velocity ...

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  • Biodegradation and bioremediation of hydrocarbons in ...

    2006-3-27 · Biodegradation of aro-matic hydrocarbons appears to be sensitive to pH and possibly also to by-products of the biodegradation of the saturate fraction, which could explain the persistence of aromatic petroleum hydrocarbons in the environment. Foght et al. (1999) investigated the role of the N source in biodegradation of crude oil components by ...

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  • ORIGINAL RESEARCH ARTICLE BIODEGRADATION OF

    2020-4-28 · Biodegradation is expected to be the major mechanism of loss for most chemicals released into the environment. This process refers to the degradation and assimilation of xenobiotics by living microorganisms to produce degradation products. The most important organisms in biodegradation are fungi, bacteria and algae.

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  • Biodegradation and Bioremediation (With Diagram)

    2021-7-8 · ADVERTISEMENTS: Read this article to learn about the biodegradation and bioremediation in details with diagrams. Biodegradation or biological degradation is the phenomenon of biological transformation of organic compounds by living organisms, particularly the microorganisms. Biodegradation basically involves the conversion of complex organic molecules to simpler (and mostly …

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  • 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.

    Get Price
  • Evaluation of the Biodegradation Efficiency of Four ...

    In this study, we demonstrated the biodegradation of four different types of plastics, PE, PS, PPS and PP, by P. aeruginosa, and further compared the biodegradation efficiencies for each. The P. aeruginosa used in this study was prepared and enriched by isolating the gut extract from PS-ingested superworms, followed by culturing in PS-added ...

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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
  • Biodegradation of partially hydrolyzed polyacrylamide

    Biodegradation of partially hydrolyzed polyacrylamide hpam using bacteria isolated from omani oil fields Walaa Al-Moqbali, Sanket J. Joshi, Saif Al-Bahry , Yahya Al-Wahaibi , Abdulkadir Elshafie , H.E. Dr. Ali AL-Bimani , Abdul-Aziz M. Al-Hashmi , Sathish Babu Soundra Pandian

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  • Novel biodegradable polymeric flocculant based on ...

    Novel biodegradable polymeric flocculant based on polyacrylamide-grafted tamarind kernel polysaccharide. Ghosh S(1), Sen G, Jha U, Pal S. Author information: (1)Department of Applied Chemistry, Birla Institute of Technology, Mesra, Ranchi 835 215, Jharkhand, India.

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  • Biodegradation of Synthetic and Natural Plastic by ...

    2020-8-21 · Plastic can degrade by a variety of mechanisms such as chemical, thermal, photoxidation and biodegradation, all of which take an extremely long time depending on the molecular weight of polymer, it could take up to 1000 years for some types of plastics to degrade [].. Microorganisms can also play a vital role in this process, as over 90 genera of bacteria, fungi and actinomycetes have the ...

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  • Biodegradation and Bioremediation (With Diagram)

    2021-7-8 · ADVERTISEMENTS: Read this article to learn about the biodegradation and bioremediation in details with diagrams. Biodegradation or biological degradation is the phenomenon of biological transformation of organic compounds by living organisms, particularly the microorganisms. Biodegradation basically involves the conversion of complex organic molecules to simpler (and mostly …

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  • Biodegradation of plastics Masayuki Shimao

    2006-2-24 · new microorganisms for biodegradation, the discovery of new degradation enzymes, and the cloning of genes for synthetic polymer-degrading enzymes. Addresses Department of Biotechnology, Faculty of Engineering, Tottori University, Tottori 680-8552, Japan; e-mail: [email protected] Current Opinion in Biotechnology 2001, 12:242–247

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  • Literature on Polyacrylamide Gels | Linda Chalker

    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.

    Get Price
  • Microbial degradation of hydrocarbons in the

    2021-2-1 · The ecology of hydrocarbon degradation by microbial populations in the natural environment is reviewed, emphasizing the physical, chemical, and biological factors that contribute to the biodegradation of petroleum and individual hydrocarbons. Rates of biodegradation depend greatly on the composition, state, and concentration of the oil or hydrocarbons, with dispersion and emulsification ...

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