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application anionic polyacrylamide biodegradation

  • Polyacrylamide degradation and its implications in ...

    2018-9-7u2002·u2002The hydrolyzed form of polyacrylamide (HPAM), a co-polymer of acrylamide and acrylic acid, is the most widely used anionic PAM in oil and gas development as well as in soil conditioning. 1,9,12,21 ...

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  • Biodegradation of anionic polyacrylamide mediated by ...

    Biodegradation of anionic polyacrylamide mediated by laccase and amidase: docking, virtual mutation based on affinity and DFT study January 2021 New Journal of Chemistry 45(2)

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  • ANIONIC POLYACRYLAMIDE (PAM) APPLICATION

    ANIONIC POLYACRYLAMIDE (PAM) APPLICATION . Code 450 (Ac) DEFINITION . Application of water-soluble anionic polyacrylamide (PAM) to meet a resource concern. PURPOSE . This practice may be applied to achieve one or more of the following purposes: • Reduce soil erosion by water or wind. • Improve water quality.

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  • Biodegradation of Polyacrylamide and Its Derivatives ...

    2017-5-4u2002·u2002Although 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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  • Microbial degradation of polyacrylamide and the ...

    2019-4-1u2002·u2002Biodegradation 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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  • Transfer and degradation of polyacrylamide-based ...

    2014-9-26u2002·u2002Anionic PAMs used in flocculation applications are water soluble and have little if any cross-linking. The molecules, when dissolved in water, are nominally linear, although they may be coiled or curled to varying degrees due to either substitution along the chain or as a result of electrolytes in the solvating water (Sojka et al. 2007). PAMs can be manufactured to have …

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  • Application of polyacrylamide flocculants for water

    2021-10-15u2002·u2002Polyacrylamide (PAM) is a water-soluble polymer that is widely used as a flocculant in sewage treatment. The accumulation of PAM affects the formation of dewatered sludge and potentially produces ...

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  • Best Practices Guidance for the Use of Anionic ...

    2018-4-4u2002·u2002Anionic Polyacrylamide Application Guide for Urban Construction in Ontario. 11/15/2017 17 Product selection criteria • Anionic PAM as the active ingredient • Site specific performance testing • Moderate charge density – 8 to 35% by weight • …

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