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biodegradation of polyacrylamide using method

  • Biodegradation of Polyacrylamide and Its Derivatives ...

    2015-11-1 · 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.

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  • Biodegradation for hydrolyzed polyacrylamide in the ...

    2014-2-1 · Using hydrolytic polyacrylamide (HPAM) to biologically produce volatile fatty acids (VFA) was applied to study the mechanisms for breakdown of carbon chain backbone (breakdown position of C–C group) by controlling pH. Total VFAs production in HPAM were measured when the amide bond (C–N portion) hydrolyzed into carboxylic acid.

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  • Biodegradation of polyacrylamide by anaerobic

    2019-4-1 · Polyacrylamide degradation, determined using the starch-cadmium method, was reported to be 45% under optimized conditions. Growth, measured as colony forming units was also demonstrated. In addition, analyses of the culture medium by SEC indicated that the high molecular weight polymer was degraded to smaller molecules during cultivation.

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  • Microbial degradation of polyacrylamide and the ...

    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 Partially Hydrolyzed Polyacrylamide

    For example, photocatalytic method achieved a mineralization efficiency of only 37% for 10 mg L −1 hydrolyzed PAM solution in 14 h (Al-Sabahi et al., 2018), while Kang et al. reported the electron-fenton method could treat high concentration of PAM (2 g L −1, 5 L) but required operation conditions of initial pH = 3, 1.5 mM [Fe 2+] addition, 400 mA cm −2 current input and air-pumping of 1.5 L min −1 (Kang …

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  • Polyacrylamide degradation and its implications in ...

    Seven polyacrylamide(PAM)-degrading bacteria were isolated from waste water treated pool of Henan(P.R.China) oil field, six of which were isolated from the sample of sludge, one from the sample of waste water. Sequences and phylogenetic analysis of 16 S rDNA clones of the seven bacteria showed that four were affiliated with Actinobacteria, two with Alphaproteobacteria, one with Bacillus.

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  • Efficient degradation of polyacrylamide using a 3 ...

    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 Derivatives.

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  • Analysis of Seven Polyacrylamide(PAM)-Degrading

    2019-5-26 · 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.

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  • 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 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

    Biodegradation of partially hydrolyzed polyacrylamide hpam using bacteria isolated from omani oil fields. Society of Petroleum Engineers - SPE EOR Conference at Oil and Gas West Asia 2018. Vol. 2018-March Society of Petroleum Engineers, 2018.

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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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  • Biodegradation of hydrolyzed polyacrylamide by a

    The biodegradation capability of strain SZK-5 was determined by incubation in a mineral salt medium (MSM) containing HPAM under different environmental conditions, showing 55.93% of the HPAM removed after 7 d of incubation under the optimum conditions ((NH 4) 2 SO 4 = 1667.9 mg L −1, temperature = 24.05 °C and pH = 8.19). Cytochrome P450 ...

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  • CiteSeerX — Biodegradation of Petroleum

    The method described here provides a simple and inexpensive method for determining the aerobic biodegradability of organics in soil. Results indicated that, for the polyacrylamide (PAM) treatments in soil, there was no significant CO2 production in the headspace of the …

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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 deal …

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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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  • 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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  • 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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  • 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

    Biodegradation of partially hydrolyzed polyacrylamide hpam using bacteria isolated from omani oil fields. Society of Petroleum Engineers - SPE EOR Conference at Oil and Gas West Asia 2018. Vol. 2018-March Society of Petroleum Engineers, 2018.

    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 ef …

    Get Price
  • 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.

    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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  • Waste-Activated Sludge Fermentation for

    2015-7-6 · Because recent investigations into improving the biodegradation of PAM have become an interesting topic 20,21,22,23,24, many researchers have begun to biodegrade PAM using isolated microorganisms ...

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  • Biodegradation of polymers - NISCAIR

    2009-8-6 · using certain chemicals like acids and alkalis, etc. Usage of certain microorganisms and enzymes to degrade polymers are classified as the biodegradation method of polymers. Some types of plastics have been shown to be biodegradable, and their degradation mechanisms have progressively become clearer. Very small

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  • Spectrophotometric Determination of Substrate

    2019-3-13 · 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 …

    Get Price
  • Decolorization and Biodegradation of Rubine GFL by ...

    2012-2-11 · This study represents the development of a new batch method by consortium GG-BL using two microbial cultures viz., Galactomyces geotrichum MTCC 1360 and Brevibacillus laterosporus MTCC 2298, by varying environmental conditions for the decolorization and biodegradation of Rubine GFL. Consortium was found to give better decolorization and degradation of Rubine GFL as compared to …

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  • Absorption and adsorption studies of

    2021-1-8 · where S is the swelling content (g water g dry gel −1), w t is the weight of swollen hydrogel at time t, and w d is the weight of original dry hydrogel.. Adsorption experiments. Effect of pH on dye removal was studied over a pH range of 2–10 and the pH of the solution was adjusted to the required value with 0.1 mol L −1 acid (HCl) or base (NaOH) solution using a pH meter (Hanna HI-2211 ...

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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 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.

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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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  • 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
  • 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.

    Get Price
  • Isolation and Characterization of Polyacrylamide

    2010-5-1 · In the present study, the biodegradation of carbofuran phenol using isolated bacteria from soil and immobilized cells of Klebsiella sp. strain ATCC13883T in alginate, agar, polyacrylamide, polyurethane foam (PUF) and alginate-bentonite clay-PAC has been investigated. The rate of degradation of carbofuran phenol by immobilized cells and free ...

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  • Biodegradation of Carbofuran phenol by free and ...

    2012-2-11 · This study represents the development of a new batch method by consortium GG-BL using two microbial cultures viz., Galactomyces geotrichum MTCC 1360 and Brevibacillus laterosporus MTCC 2298, by varying environmental conditions for the decolorization and biodegradation of Rubine GFL. Consortium was found to give better decolorization and degradation of Rubine GFL as compared to …

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  • Decolorization and Biodegradation of Rubine GFL by ...

    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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  • Absorption and adsorption studies of

    2021-1-8 · where S is the swelling content (g water g dry gel −1), w t is the weight of swollen hydrogel at time t, and w d is the weight of original dry hydrogel.. Adsorption experiments. Effect of pH on dye removal was studied over a pH range of 2–10 and the pH of the solution was adjusted to the required value with 0.1 mol L −1 acid (HCl) or base (NaOH) solution using a pH meter (Hanna HI-2211 ...

    Get Price
  • 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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  • Biodegradation of polyacrylamide by bacteria isolated

    Biodegradation of polyacrylamide by bacteria isolated from activated sludge and oil-contaminated soil Qinxue Wen∗, Zhiqiang Chen, Ye Zhao, Huichao Zhang, Yujie Feng State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, PR China article info Article history: Received 22 July ...

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  • Biodegradation of Partially Hydrolyzed Polyacrylamide

    2016-3-29 · Potential of hydrolyzed polyacrylamide biodegradation to final products through regulating its own nitrogen transformation in different dissolved oxygen systems. Research paper by Congcong C Zhang, Lanmei L Zhao, Mutai M Bao, Jinren J Lu. Indexed on: 13 Feb '18. Published on:

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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 Yang, Ji Dong Gu , Bo Zhong Mu

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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 Yang, Ji Dong Gu , Bo Zhong Mu

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  • Isolation and Characterization of Polyacrylamide

    2015-4-16 · The microbial biodegradation of PAM has long been studied. studies suggested that Previous microorganisms are able to degraded and utilized PAM as a nitrogen source in both aerobic and anaerobic environments [13,14]. Microorganisms produce a polyacrylamide induced amidase to deaminate PAM[15] .

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  • advanced treatment for actual hydrolyzed

    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 was 4.

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  • Electrolytic degradation of polyacrylamide in aqueous ...

    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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  • 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 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
  • Isolation and Characterization of Polyacrylamide

    The microbial biodegradation of PAM has long been studied. Previous studies suggested that microorganisms are able to degraded and utilized PAM as a nitrogen source in both aerobic and anaerobic environments [13,14]. Microorganisms produce a polyacrylamide induced amidase to deaminate PAM .

    Get Price
  • Journal: International biodeterioration &

    This study reported an effective method of using hydrogen peroxide (H2O2), jute fiber (JF) wastes and cationic polyacrylamide (CPAM) to precondition sewage sludge to improve its dewatering performance.

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  • Biodegradation of Dibenzofuran Using Immobilized ...

    2008-4-21 · This study was undertaken to develope the method to biodegrade the dioxin congeners using immobilized Pseudomonas aeruginosa which is able to utilize specifically dibenzofuran (DBF), fundamental element of dioxin. As an immobilizing chemical, polyethyleneglycol, polyacrylamide and sodium alginate were tested.

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  • Multi-laboratory validation of a new marine

    4.Xiaohu Dai, Fan Luo, Jing Yi, Qunbiao He,Bin Dong*.Biodegradation of polyacrylamide by anaerobic digestion under mesophilic condition and its performance in actual dewatered sludge system.Bioresource Technology.2014,153:55-61.

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  • Method for biodegradation of aromatic and

    2020-11-10 · S1 1 Multi-laboratory validation of a new marine 2 biodegradation screening test for chemical 3 persistence assessment 4 Amelie Ott a*, Timothy J. Martin a,1, Kishor Acharya a, Delina Y. Lyon b, Nik Robinson c, Bob 5 Rowles d, Jason R. Snape a,e,f, Ian Still c,2, Graham F. Whale g,3, Vurtice C. Albright III h, Petra 6 Bäverbäck i, Nicola Best j, Ruth Commander k, Curtis Eickhoff l, Sarah ...

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  • US5807736A - Method for biodegradation of

    BACKGROUND OF THE INVENTION. 1. Field of the Invention . The present invention relates to a novel bacterial strain, a method for the biodegradation of aromatic compounds and/or chlorinated organic compounds such as trichloroethylene (TCE) and dichloroethylene (DCE) by using it, particularly a biodegradation purification method and an environment remediation method which are useful for ...

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  • Isolation and Characterization of Polyacrylamide

    The microbial biodegradation of PAM has long been studied. Previous studies suggested that microorganisms are able to degraded and utilized PAM as a nitrogen source in both aerobic and anaerobic environments [13,14]. Microorganisms produce a polyacrylamide induced amidase to deaminate PAM .

    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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  • Biodegradation of cypermethrin by immobilized cells

    2015-7-1 · Biodegradation of such chemicals by microorganisms may provide an cost-effective method for their detoxification. We have investigated the degradation of cypermethrin by immobilized cells of Micrococcus sp. strain CPN 1 in various matrices such as, polyurethane foam (PUF), polyacrylamide, sodium alginate and agar.

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  • Direct analysis of aromatic pollutants using a HPLC-FLD ...

    Direct analysis of aromatic pollutants using a HPLC-FLD/DAD method for monitoring biodegradation processes† Dilan Camille Aydin, * Julian Zamudio Pineres, Fatma Al-Manji, Huub Rijnaarts and Tim Grotenhuis Industrial discharges resulting in contaminated groundwater is a global environmental problem. For such

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  • Biodegradation of Azo Dyes by Using Soil Bacteria

    2019-7-1 · Biodegradation is a green friendly method used for the degradation of azo dyes. In this study, the degradation of azo dyes was carried out by using Bacillus species that were isolated from the soil obtained from the textile industry. Biochemical tests were carried out and identified as Bacillus ...

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  • In Situ Aerobic Biodegradation In Soil Contact Using

    In this paper, the standards test method of ASTM D 5988-12 for determining the degree and rate of biodegradation of plastics in contact with soil was applied to three commercial plastic products sourced locally. The plastic samples are claimed to be of biodegradable nature by …

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  • Biodegradation of malachite green by Klebsiella ...

    2018-2-7 · Biodegradation of Malachite Green by Klebsiella Terrigenaptcc. 1650: The Critical Parameters Were Optimized Using Taguchi Optimization Method. Ramezani S. 1 *, Pourbabaee AA. 2. and Javaheri Daneshmand H. 3. 1. Department of Chemistry, Tarbiat Moallem University, Tehran, Iran. 2. Department of Soil science, Biotech Lab, Tehran University ...

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  • A Kinetic Study of Anaerobic Biodegradation of Food and ...

    2013-12-24 · inhibitory effects and accelerate waste biodegradation. The experimental setup was comprised of three sets of bior eactors. A biodegradation rate law in differential form was proposed and the numerical values of kinetic order and rate constant were determined using initial rate method as 0.994 and 0.3093 mol. 0.006 ·day. −1, respectively.

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  • (PDF) Successful biodegradation of coir pith waste

    Antara Seal et al: Biodegradation of coir pith waste using Novcom composting method Journal of Pharmaceutical and Scientific Innovation www.jpsionline.com Research Article SUCCESSFUL BIODEGRADATION OF COIR PITH WASTE USING NOVCOM COMPOSTING METHOD: A CASE STUDY FROM VANIAMPARA RUBBER ESTATE, INDIA Antara Seal1*, Ranjan Bera1, Anupam …

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  • US5807736A - Method for biodegradation of

    A bacterial strain J1 (FERM BP-5102) which can effectively degrade aromatic compounds and/or chlorinated organic compounds such as trichloroethylene (TCE) is disclosed. Also the degradation occurs at a lower temperature such as 15°. Further, a method for purifying waste water, soil or a gas polluted with the above chemical compounds utilizing the bacterium is disclosed.

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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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  • Biodegradation study of enzymatically catalyzed ...

    2015-12-19 · Biodegradation study using composting and soil burial method Biodegradation study of Gum tragacanth based IPN has been done by composting and soil burial method. Three stages of the biodegradation were taken for evaluation purpose: first stage of biodegradation …

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  • Purification and characterization of alkaline lipase ...

    2020-5-19 · loaded onto sodium dodecyl sulfate polyacrylamide gel (12%) electrophoresis (SDS-PAGE) following the method of Laemmli [21]. The molecular weight of the lipase was determined by comparing its mobility with the medium range marker proteins (14.3–97.2 kDa). Protein concen-tration was measured following the method of Lowry et al. [22].

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  • Original Research Biodegradation of Industrial Oil ...

    agar, polyacrylamide hydrazide, and polyurethane foam have been used successfully for the immobilization of microorganisms [9]. Several studies have used free suspension and immobilized cultures for oil biodegradation, and the results revealed a …

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  • Biodegradation of aliphatic and aromatic

    Biodegradation of aliphatic and aromatic hydrocarbons using the filamentous fungus Penicillium sp. CHY-2 and characterization of its manganese peroxidase activity. Muthusamy Govarthanan a, Soichiro Fuzisawa b, Toshiki Hosogai a and Young-Cheol Chang * ab a Department of Applied Sciences, College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido …

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  • A Kinetic Study of Anaerobic Biodegradation of Food

    A biodegradation rate law in differential form was proposed and the numerical values of kinetic order and rate constant were determined using initial rate method as 0.994 and 0.3093 mol0.006·day-1, respectively. Results obtained were consistent with that found in literature and model predictions were in reasonable agreement with experimental data.

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  • Biodegradation of malachite green by Klebsiella ...

    2018-2-7 · Biodegradation of Malachite Green by Klebsiella Terrigenaptcc. 1650: The Critical Parameters Were Optimized Using Taguchi Optimization Method. Ramezani S. 1 *, Pourbabaee AA. 2. and Javaheri Daneshmand H. 3. 1. Department of Chemistry, Tarbiat Moallem University, Tehran, Iran. 2. Department of Soil science, Biotech Lab, Tehran University ...

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  • In Situ Aerobic Biodegradation In Soil Contact Using

    In this paper, the standards test method of ASTM D 5988-12 for determining the degree and rate of biodegradation of plastics in contact with soil was applied to three commercial plastic products sourced locally. The plastic samples are claimed to be of biodegradable nature by …

    Get Price
  • 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 …

    Get Price
  • US5807736A - Method for biodegradation of

    A bacterial strain J1 (FERM BP-5102) which can effectively degrade aromatic compounds and/or chlorinated organic compounds such as trichloroethylene (TCE) is disclosed. Also the degradation occurs at a lower temperature such as 15°. Further, a method for purifying waste water, soil or a gas polluted with the above chemical compounds utilizing the bacterium is disclosed.

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

    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 molecular ...

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  • Biodegradation study of enzymatically catalyzed ...

    2015-12-19 · Biodegradation study using composting and soil burial method Biodegradation study of Gum tragacanth based IPN has been done by composting and soil burial method. Three stages of the biodegradation were taken for evaluation purpose: first stage of biodegradation …

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

    2020-5-19 · loaded onto sodium dodecyl sulfate polyacrylamide gel (12%) electrophoresis (SDS-PAGE) following the method of Laemmli [21]. The molecular weight of the lipase was determined by comparing its mobility with the medium range marker proteins (14.3–97.2 kDa). Protein concen-tration was measured following the method of Lowry et al. [22].

    Get Price
  • Covalent chemical functionalization enhances the ...

    2017-11-13 · Biodegradation of the graphene-based materials is an emerging issue due to their estimated widespread usage in different industries. Indeed, a few concerns have been raised about their biopersistence. ... Native polyacrylamide gel electrophoresis. ... GO previously reported was synthesized using well-known Hummers method, ...

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  • Direct analysis of aromatic pollutants using a HPLC

    Direct analysis of aromatic pollutants using a HPLC-FLD/DAD method for monitoring biodegradation processes† Dilan Camille Aydin , * a Julian Zamudio Pineres , a Fatma Al-Manji , a Huub Rijnaarts a and Tim Grotenhuis a

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  • A Kinetic Study of Anaerobic Biodegradation of Food

    2007-5-14 · Simplified spectrophotometric method using methylene blue for determining anionic surfactants: Applications to the study of primary biodegradation in aerobic screening tests E. Jurado *, M. Ferna´ndez-Serrano, J. Nu´n˜ez-Olea, G. Luzo´n, M. Lechuga

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  • Simplified spectrophotometric method using methylene

    Citation: Pourbabaee AA, Ramezani S, Javaheri Daneshmand H (2013) Biodegradation of Malachite Green by Klebsiella Terrigenaptcc 1650: The Critical Parameters Were Optimized Using Taguchi Optimization Method. J Bioremed Biodeg 4:175. doi: 10.4172/2155-6199.1000175

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  • Biodegradation of Malachite Green by Klebsiella ...

    2014-1-20 · H. Mehdi and E. Giti, “Investigation of alkane biodegradation using the microtiter plate method and correlation between biofilm formation, biosurfactant production and crude oil biodegradation,” International Biodeterioration and Biodegradation, vol. 62, no. 2, pp. 170–178, 2008. View at: Publisher Site | Google Scholar

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  • Bacterial Biodegradation of Crude Oil Using Local

    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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  • Biodegradation for hydrolyzed polyacrylamide in the ...

    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 in ...

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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 overla

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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. The results indicated that the utilization rate of PAM (as...

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  • biodegradation of partially hydrolyzed polyacrylamide

    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 …

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  • Biodegradation for hydrolyzed polyacrylamide in the ...

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  • Journal: International biodeterioration &

    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 was 4.

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  • Electrolytic degradation of polyacrylamide in aqueous ...

    This study reported an effective method of using hydrogen peroxide (H2O2), jute fiber (JF) wastes and cationic polyacrylamide (CPAM) to precondition sewage sludge to improve its dewatering performance.

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  • contribution of amide based coagulant polyacrylamide

    In this study, electrochemical treatment of a synthetic solution containing 2,000 mg/L of polyacrylamide (PAM) was studied using a three-dimensional electrode reactor, which received granular activated carbon (GAC) as particle electrodes. Air and ferrous salt were introduced into the system to electrogenerate hydrogen peroxide and Fenton's reactions.

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