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biodegradation of high purity polyacrylamide producers

  • Microbial degradation of polyacrylamide and the ...

    2019-4-1 · Biodegradation of polyacrylamide begins with amidase catalysed deamination of polyacrylamide to ammonia and polyacrylate. The liberated ammonia is then used as a nitrogen source for growth by the microbes. The carbon backbone, polyacrylate, is more recalcitrant to biodegradation than the amide moieties.

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  • Biodegradation of polyacrylamide by bacteria isolated

    2010-3-15 · Polyacrylamide (PAM), a linear water soluble polymeric compound with high molecular weight, is extensively used for oil production in China. Compared with the physico-chemical degradation of PAM, there is no acrylamide monomer, which causes peripheral neuropathy, released in the process of biodegradation.

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  • Biodegradation of Polyacrylamide and Its Derivatives ...

    2017-5-4 · Polyacrylamide (PAM) is a long chain, linear, water soluble polymeric substance formed from acrylamide (C 3 H 5 NO) subunits, has a high molecular weight of typically from few 1000 to 20 × 10 6 g/mol, and has a very high viscosity in aqueous solutions, depending on the concentration and the degree of polymerization (Sojka et al. 2007).All those qualities make PAM an excellent compound for ...

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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.

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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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  • Polyacrylamide degradation and its implications in ...

    2018-9-7 · High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and …

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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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  • Biodegradation of superabsorbent polymers in soil

    Biodegradation of two superabsorbent polymers, a crosslinked, insoluble polyacrylate and an insoluble polyacrylate polyacrylamide copolymer, in soil by the white-rot fungus,

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  • Enhanced biodegradation of atrazine at high infiltration ...

    deethylatrazine (DEA, purity >99.9%), deisopropylatrazine (DIA, purity >96.3%), and terbutylazine (purity 98.6%) were purchased from Sigma-Aldrich Chemicals (St. Louis, MO). Isotopically ring-labeled compounds: 13C 3-atrazine (purity 99% atom of 13C3), 13C3-deethylatrazine (purity 99.1% atom of 13C

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  • Biodegradation of high‐toughness double network

    2006-11-21 · This study evaluated biodegradation properties of four novel high-toughness double network (DN) hydrogels as potential materials for artificial cartilage. Concerning each DN gel material, a total of 12 specimens were prepared, and 6 of the 12 specimens were examined to determine the mechanical properties without any treatments.

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  • Biodegradation of Griseofulvin by isolated from expired ...

    2020-9-18 · The polyacrylamide gel electrophoresis was used for determining the Griseofulvin degrading enzyme purity, together with retention factor (R f) and molecular masses (Mr). The biodegradation product of Griseofulvin is identified by using Gas Chromatography-Mass Spectrometry.

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  • Polyacrylamide - 9003-05-8 Manufacturers &

    Brand: Omkar industries. Purity: 100%. Grade: Textile, water treatement.Etc. Usage/Application: polyacrylamide should be properly dispersed and dissolved in water with gentle stirring not exceeding 100 to 200rpm.For best results the product should be used in conc. It is a non ionic polyacrylamide …

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  • Current status on the biodegradability of acrylic

    2021-1-11 · Acrylic polymers (AP) are a diverse group of materials with broad applications, frequent use, and increasing demand. Some of the most used AP are polyacrylamide, polyacrylic acid, polymethyl methacrylates, and polyacrylonitrile. Although no information for the production of all AP types is published, data for the most used AP is around 9 MT/year, which gives an idea of the amount of …

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  • Biodegradation of Residues from the Palo Santo (Bursera ...

    2019-8-23 · biodegradation experiment, using residues from the essential oil extraction of the Palo Santo tree (Bursera graveolens). As such, two native Xylaria spp. and an exotic mushroom Trametes versicolor were incubated on the spent substrate (Residues of B. Graveolens, BGR’s). The relatively high lignin and

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  • Biodegradation (part 2) - Aalto

    2021-2-15 · Biodegradation (part 2) Biopolymers CHEM-E2155. Michael Hummel, Joanna Witos. [email protected]

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  • Plasmid-Mediated Biodegradation of Chlorpyrifos

    2020-7-26 · Organophosphate pesticide persistence is an emerging menace to the environment and despite this fact, its use has been enhanced due to its high efficiency. Bioremediation using microorganisms would be the only means by which these hazardous compounds could be wiped out without disturbing the environmental harmony. The current work studied the molecular mechanism of …

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  • Cationic polyacrylamide copolymers (PAMs):

    2018-5-18 · Cationic polyacrylamide copolymers (PAMs) are used for sludge dewatering in municipal waste water treatment and might enter the environment by spreading of the sludge on agricultural land. Concern has been expressed since little is known about the degradation of PAMs in soils. To obtain detailed information on the polymer’s fate in the soil compartment, the degradation of 14C …

    Get Price
  • ORIGINAL ARTICLE Biodegradation of nicotine by a

    Zhao 1999). China is one of the largest tobacco producers and consumers in the world. Approximately 0Æ6 million tons of discarded tobacco leaves are generated every year (Rao et al. 2005). Most of them are non-recyclable, pow-dery and nicotine-containing wastes, and lead to a serious Keywords Agrobacterium sp., biodegradation, nicotine,

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  • DADMAC Suppliers and Factory - China DADMAC

    2021-7-9 · DADMAC is a high purity, aggregated, quaternary ammonium salt and high charge density cationic monomer. Its appearance is colorless and transparent liquid without irritating smell. DADMAC can be dissolved in water very easily. Its molecular formula is …

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  • Degradation of Polyacrylamide (PAM) and methane

    2020-9-18 · The polyacrylamide gel electrophoresis was used for determining the Griseofulvin degrading enzyme purity, together with retention factor (R f) and molecular masses (Mr). The biodegradation product of Griseofulvin is identified by using Gas Chromatography-Mass Spectrometry.

    Get Price
  • Biodegradation of Griseofulvin by isolated from expired ...

    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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  • high molecular weight hydrolyzed polyacrylamides

    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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  • Global Polyacrylamide Market Size & Share | Industry ...

    2015-7-6 · Polyacrylamide (PAM), a linear water-soluble polymeric compound with a high molecular weight, is widely used in wastewater treatment processes 1,2, …

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  • Shear-Induced Degradation of Linear Polyacrylamide ...

    The first report of the biodegradation of high-MW PAHs was presented in 1975. Gibson et al. identified two products of BαP metabolism – cis -9,10-dihydroxy-9,10-dihydro-benzo[α]pyrene and cis -7,8-dihydroxy-7,8-dihydrobenzo[α]pyrene – from the culture solution of a mutant Beijerinckia sp. strain when it grew with succinate and biphenyl ...

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  • Bioelectricity-assisted partial degradation of linear ...

    Biodegradation and abiotic processes were investigated by HPLC analyses. In addition, a microbial consortium was selected, that was able to use azimsulfuron as the sole energy and carbon source. One of the metabolites produced by the consortium was isolated and identified through LC-MS analyses.

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  • Waste-Activated Sludge Fermentation for

    2021-2-15 · Cationic polyacrylamide (cPAM) is a widely used flocculant to dewater sewage sludge (SS) for high-solids anaerobic digestion (AD), and its degradation is crucial since it would release toxic acrylamide (AM) once entering environment. Hydrothermal treatment (HTT) is an efficient method to enhance the AD efficiency of SS.

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  • SciELO - Brasil - Biodegradation of cypermethrin by ...

    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…

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  • china polyacrylamide hydrolyzed polyacrylamide

    China Polyacrylamide Hydrolyzed, Polyacrylamide Hydrolyzed. China Polyacrylamide Hydrolyzed manufacturers - Select 2020 high quality Polyacrylamide Hydrolyzed products in best price from certified Chinese Polyacrylamide manufacturers, Water Treatment Polyacrylamide suppliers, wholesalers and …

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  • Acrylamide Uses and Production - UK Essays

    Biodegradation is an important removal mechanism for the large quantities of chemical that released in our environment. The result of biodegradation is a decrease in the quantity of chemicals present in the environment and is a vital technique in preventing the accumulation and persistence of the chemicals (Shimp et al., 1990).

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  • DADMAC Suppliers and Factory - China DADMAC

    2021-7-9 · DADMAC is a high purity, aggregated, quaternary ammonium salt and high charge density cationic monomer. Its appearance is colorless and transparent liquid without irritating smell. DADMAC can be dissolved in water very easily. Its molecular formula is …

    Get Price
  • Journal of Bioremediation & Biodegradation

    2018-2-22 · Biodegradation Idrees, et al., J Bioremediat Biodegrad 201 8, 9:1 DOI: 10.4172/2155-6199.1000421 Research Article Open Access J Bioremediat Biodegrad, an open access journal ISSN: 2155-6199 Volume 9 • Issue 1 • 1000421

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  • Biodegradation of Residues from the Palo Santo (Bursera ...

    2019-8-23 · biodegradation experiment, using residues from the essential oil extraction of the Palo Santo tree (Bursera graveolens). As such, two native Xylaria spp. and an exotic mushroom Trametes versicolor were incubated on the spent substrate (Residues of B. Graveolens, BGR’s). The relatively high lignin and

    Get Price
  • Removal of Acrylamide by Microorganisms | IntechOpen

    2018-5-18 · Cationic polyacrylamide copolymers (PAMs) are used for sludge dewatering in municipal waste water treatment and might enter the environment by spreading of the sludge on agricultural land. Concern has been expressed since little is known about the degradation of PAMs in soils. To obtain detailed information on the polymer’s fate in the soil compartment, the degradation of 14C …

    Get Price
  • Environmental biodegradation of PLA by Biotic and

    2020-1-19 · Environmental biodegradation of PLA by Biotic and Abiotic factors ... (molecular weight, optical purity) Higher order structures (crystallinity, Tg and Tm), Environmental factors such as( humidity, temperature ,pH and the presence of enzymes or microorganisms)Tsuji,H.( 2010) During its environmental degradation, ester bonds of PLA must be ...

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  • Biodegradation of high-molecular-weight polycyclic ...

    Fungal DNA was only positive at high temperatures and at the end of the biodegradation process (101 and 137 days). A minimum of 10 colonies were isolated and identified by molecular techniques from the four treatments at days 33 and 101 by cultivation methods.

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  • Acrylamide Manufacturers & Suppliers, China

    acrylamide manufacturer/supplier, China acrylamide manufacturer & factory list, find qualified Chinese acrylamide manufacturers, suppliers, factories, exporters & wholesalers quickly on Made-in-China.com.

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  • Optimisation of Key Abiotic Factors of PAH (Naphthalene ...

    2019-9-16 · Therefore, high concentrations of nutrients and soluble forms of nitrogen and iron at neutral pH favour the biodegradation. Also, the addition of glucose to PAHs as carbon source increased the number of total microorganism and enhanced PAH biodegradation due to the augmentation of PAH degrader micro-organisms. It is also important to underline ...

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  • BIODEGRADATION OF PHENOL BY LOCALLY ISOLATED

    2013-9-9 · microorganisms is inhibited at high concentrations of phenol, thus limiting the efficiency of the biodegradation. The efficiency of phenol biodegradation can be enhanced by a process of cell immobilisation. Accordingly, the aim of this study was to seek potential phenol-degrading bacteria from local bacterial strains. The study

    Get Price
  • Novel Alkylsulfatases Required for Biodegradation

    Recent reports show that contrary to common perception, branched alkyl sulfate surfactants are readily biodegradable in standard biodegradability tests. We report here the isolation of bacteria capable of biodegrading 2-butyloctyl sulfate and the identification of novel enzymes that initiate the process. Enrichment culturing from activated sewage sludge yielded several strains capable of ...

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  • The Technology — CiCLO

    ASTM D5511-18 Standard Test Method for Determining Anaerobic Biodegradation of Plastic Materials Under High-Solids Anaerobic-Digestion Conditions This test method determines the rate and degree of anaerobic biodegradability of plastic products when placed in a high-solids anaerobic digester for the production of digestate from municipal solid ...

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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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  • Polyacrylamide Emulsion - Sinofloc Chemical

    Polyacrylamide emulsion is prepared by dispersion or inverse emulsion polymerization, which is a form of polyacrylamide liquid present. Besides the characteristics of solid polyacrylamide flocculants, through the molecular chain of polar groups to adsorb suspended solids in the water particles, the emulsion could formats the large flocs through bridge between the particles or electricity.

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  • ORIGINAL ARTICLE Biodegradation of nicotine by a

    Zhao 1999). China is one of the largest tobacco producers and consumers in the world. Approximately 0Æ6 million tons of discarded tobacco leaves are generated every year (Rao et al. 2005). Most of them are non-recyclable, pow-dery and nicotine-containing wastes, and lead to a serious Keywords Agrobacterium sp., biodegradation, nicotine,

    Get Price
  • Environmental biodegradation of PLA by Biotic and

    2020-1-19 · Environmental biodegradation of PLA by Biotic and Abiotic factors ... (molecular weight, optical purity) Higher order structures (crystallinity, Tg and Tm), Environmental factors such as( humidity, temperature ,pH and the presence of enzymes or microorganisms)Tsuji,H.( 2010) During its environmental degradation, ester bonds of PLA must be ...

    Get Price
  • Biodegradation of 3-methyldiphenylether (MDE) by ...

    2016-12-20 · 3-Methyldiphenylether (MDE) is an important alkyl-substituted diphenyl ether compound that is widely used as an intermediate in the synthesis of …

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  • Optimisation of Key Abiotic Factors of PAH (Naphthalene ...

    2019-9-16 · Therefore, high concentrations of nutrients and soluble forms of nitrogen and iron at neutral pH favour the biodegradation. Also, the addition of glucose to PAHs as carbon source increased the number of total microorganism and enhanced PAH biodegradation due to the augmentation of PAH degrader micro-organisms. It is also important to underline ...

    Get Price
  • Acrylamide Manufacturers & Suppliers, China

    acrylamide manufacturer/supplier, China acrylamide manufacturer & factory list, find qualified Chinese acrylamide manufacturers, suppliers, factories, exporters & wholesalers quickly on Made-in-China.com.

    Get Price
  • International Biodeterioration & Biodegradation

    2017-1-1 · 2.5. Polyacrylamide gel electrophoresis of crude laccase Native SDS-PAGE was carried out on 12% polyacrylamide gel (Laemmli 1970). The laccase activity was visualized in the gel with ABTS as the substrate (Souza et al. 2004). The native gel was also …

    Get Price
  • TC NES SUBGROUP ON IDENTIFICATION OF PBT AND

    2015-9-15 · by the producers to be typical representatives in the substance. Additionally, some realistic worst case constituents have been considered. Table 4.1 Biodegradation estimates of typical constituents and realistic worst case constituents (marked with asterisk) as proposed by FIN and DK (Comber, 2006). Smiles of the “typical” constituent BIOWIN2*

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  • [PDF] Preparative polyacrylamide gel electrophoresis ...

    Preparative polyacrylamide gel electrophoresis has been used to purify the enterotoxin of Clostridium perfringens from Sephadex G-100 extracts. Purified toxin of high specific activity was eluted in 1 to 3 h, depending upon the length of the acrylamide gel used. Recovery of biological activity with this technique ranged from 80 to 90%. The purity and physical characteristics of the toxin were ...

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  • Biodegradation (part 2) - Aalto

    2021-2-15 · Biodegradation (part 2) Biopolymers CHEM-E2155. Michael Hummel, Joanna Witos. [email protected]

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  • Biodegradation of gasoline oxygenates - Envirogen, Inc.

    2000-6-30 · Biodegradation of the gasoline oxygenates methyl tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE), and tert-amyl methyl ether (TAME) by propane oxidizing bacteria”, Applied and Environmental Microbiology, 63:4216-4222, (1997)) and fungi (Hardison, L. K., S. S. Curry, L. M. Ciuffetti, and M. R. Hyman, “Metabolism of diethyl ether and ...

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  • OFET & OPV Materials - Sigma-Aldrich

    OFET & OPV Materials. We offer a wide range of materials for OFET & OPV applications, such as carbon nanomaterials , conductive polymers , p-type and n- type semiconductor polymers , inks for printed electronics , ready-to-use conductive substrates , self-assembly materials , and small organic molecules.

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  • Polyacrylamide - 9003-05-8 Manufacturers &

    Brand: Omkar industries. Purity: 100%. Grade: Textile, water treatement.Etc. Usage/Application: polyacrylamide should be properly dispersed and dissolved in water with gentle stirring not exceeding 100 to 200rpm.For best results the product should be used in conc. It is a non ionic polyacrylamide …

    Get Price
  • Environmental biodegradation of PLA by Biotic and

    2020-1-19 · Environmental biodegradation of PLA by Biotic and Abiotic factors ... (molecular weight, optical purity) Higher order structures (crystallinity, Tg and Tm), Environmental factors such as( humidity, temperature ,pH and the presence of enzymes or microorganisms)Tsuji,H.( 2010) During its environmental degradation, ester bonds of PLA must be ...

    Get Price
  • BIODEGRADATION OF PHENOL BY LOCALLY ISOLATED

    2013-9-9 · microorganisms is inhibited at high concentrations of phenol, thus limiting the efficiency of the biodegradation. The efficiency of phenol biodegradation can be enhanced by a process of cell immobilisation. Accordingly, the aim of this study was to seek potential phenol-degrading bacteria from local bacterial strains. The study

    Get Price
  • Biodegradable Polymers | IntechOpen

    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…

    Get Price
  • SciELO - Brasil - Biodegradation of cypermethrin by ...

    2018-5-18 · Cationic polyacrylamide copolymers (PAMs) are used for sludge dewatering in municipal waste water treatment and might enter the environment by spreading of the sludge on agricultural land. Concern has been expressed since little is known about the degradation of PAMs in soils. To obtain detailed information on the polymer’s fate in the soil compartment, the degradation of 14C …

    Get Price
  • Cationic polyacrylamide copolymers (PAMs):

    2017-11-13 · Abstract. 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. Here, we propose the design of surface-functionalized graphene oxide (GO) with the capacity to degrade more effectively compared to ...

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  • Fungal Biodegradation of Agro-Industrial Waste |

    2021-3-30 · Microcystins (MCs) are extremely hazardous to the ecological environment and public health. How to control and remove MCs is an unsolved problem all over the world. Some microbes and their enzymes are thought to be effective in degrading MCs. Microcystinase can linearize microcystin-leucine-arginine (MC-LR) via a specific locus. However, linearized MC-LR is also very toxic and needs to be …

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  • International Biodeterioration & Biodegradation

    recovery techniques has improved the extraction efficacy from biomass with high purity. This review outlines production and characteristics of PHAs, developments in their production, and applications in various industries including nanotechnology. 1. Introduction The production of petroleum based plastics has a big disadvantage

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  • International Biodeterioration & Biodegradation

    2017-1-1 · 2.5. Polyacrylamide gel electrophoresis of crude laccase Native SDS-PAGE was carried out on 12% polyacrylamide gel (Laemmli 1970). The laccase activity was visualized in the gel with ABTS as the substrate (Souza et al. 2004). The native gel was also …

    Get Price
  • Biodegradation (part 2) - Aalto

    2021-2-15 · Biodegradation (part 2) Biopolymers CHEM-E2155. Michael Hummel, Joanna Witos. [email protected]

    Get Price
  • Journal of Biological Sciences

    2021-3-10 · ion-exchange chromatography. The purity and molecular weight of lipase was determined by sodium dodecyl sulfate polyacrylamide gel electrophoresis and their kinetics was studied. Results: The enzyme was purified 8.005-fold from Pseudomonas fluorescens. The molecular mass of the partially purified Pseudomonas fluorescens lipase was 45 KDa.

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  • Biodegradation of 3-methyldiphenylether (MDE) by ...

    2016-12-20 · 3-Methyldiphenylether (MDE) is an important alkyl-substituted diphenyl ether compound that is widely used as an intermediate in the synthesis of …

    Get Price
  • Polyacrylamide company list , PAGE2

    20F, Building B, No.1118 Changshou Rd.,Shanghai Shanghai, Shanghai. ZL Petrochemicals Co., Ltd was established in 1995. We are the leading and second largest private-owned polyacrylamide manufacturer of wastewater treatment enhanced oil recovery chemicals China. Currently we have Anionic Polyacrylamide,Non-ionic ...

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  • Biodegradation of Chlorothalonil Fungicide in

    High purity helium at 1.0 ml min-1, injector temperature of 275°C and interface of 300°C was used as carrier gas; the temperature program in the furnace was: 60°C (1 min) at 12°C min-1 up to 150°C (0 min), 7°C min-1 at 230°C (3 min); 5°C min-1 at 300°C (4 min).

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  • TC NES SUBGROUP ON IDENTIFICATION OF PBT AND

    2015-9-15 · by the producers to be typical representatives in the substance. Additionally, some realistic worst case constituents have been considered. Table 4.1 Biodegradation estimates of typical constituents and realistic worst case constituents (marked with asterisk) as proposed by FIN and DK (Comber, 2006). Smiles of the “typical” constituent BIOWIN2*

    Get Price
  • Biodegradation of gasoline oxygenates - Envirogen,

    2000-6-30 · Biodegradation of the gasoline oxygenates methyl tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE), and tert-amyl methyl ether (TAME) by propane oxidizing bacteria”, Applied and Environmental Microbiology, 63:4216-4222, (1997)) and fungi (Hardison, L. K., S. S. Curry, L. M. Ciuffetti, and M. R. Hyman, “Metabolism of diethyl ether and ...

    Get Price