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microbial degradation of polyacrylamide by aerobic granules

the well-acclimated pam-degrading granules were different from the seeding granules in colour, mean diameter, biomass density and settle ability, and could use pam as the sole carbon and nitrogen source. in the batch experiments, pam degradation rate by granules was determined as 2.23 mg pam g −1 mlss h −1. according to the analysis of the

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preparation and properties of cationic polyacrylamide flocculant for drilling fluid based on modified nano sio2 on sale,nano-silica/cationic polyacrylamide (s-cpam) prepared by inverse emulsion polymerization of modified silica (c-sio2) as a hydrophobic component with acrylamide, dimethyl diallyl ammonium

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conductive polymers in water treatment: a review sciencedirect.since drinkable water resources are not infinite, the most plausible solution to address the forthcoming water scarcity is to treat the polluted water streams. this state-of-the-art review highlights the prime role of conductive polymers (cps), widely known as intrinsically conductive polymers (icps), in wastewater treatment through reviewing

cas no. 9003-05-8 cationic anionic polyacrylamide polymer pam

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polyelectrolyte polymers—types, forms, and function sciencedirect,nonionic polyacrylamide are available from very low to very high molecular weights and are used in industrial wastewater treatment, mineral process, papermaking, and other industries. high-molecular-weight nonionic polyacrylamide are routinely used in the mineral processing industries as thickeners and flocculants [36] , [37] , [38] .

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ultra-high-molecular-weight, narrow-polydispersity polyacrylamide synthesized using photoiniferter polymerization to generate high-performance,ultra-high-molecular-weight, water-soluble polyelectrolytes are commonly employed as flocculants for solid–liquid separation via colloidal destabilization, enabling the rapid and efficient removal of particulate matter from wastewater streams. a drive toward more sustainable and less polluting industrial practices, coupled with the desire to reduce freshwater usage and improve closed-loop

preparation of cationic polyacrylamide suspension and its application in oilfield wastewater treatment pmc national center for biotechnology

cationic polyacrylamide (cpam) solid particle is one of the most commonly used organic polymer flocculants in oilfield wastewater treatment, but it poses some problems, such as a slow dissolution rate and an easy formation into a “fish-eye”

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fabricating an anionic polyacrylamide (apam) with an anionic block structure for high turbidity water separation and purification rsc publishing

fabricating an anionic polyacrylamide (apam) with an anionic block structure for high turbidity water separation and purification† li feng ab, huaili zheng * ab, baoyu gao c, shixin zhang ab, chuanliang zhao ab, yuhao zhou ab and bincheng xu ab a key laboratory of the three gorges reservoir region’s eco-environment, polyacrylamide of education, chongqing university, chongqing 400045, china.

wastewater treatment using plant-derived bioflocculants,to extend shelf life and boost flocculating efficiency, natural polysaccharide biodegradability must be carefully monitored. synthetic flocculants, conversely, are highly efficient and have a long shelf life, but they are non-biodegradable and environmentally harmful (makhtar et al. 2020). the development of grafted copolymers can be used to

preparation and properties of cationic polyacrylamide

1 h-nmr analysis. the 1 h-nmr spectrum in fig. 5 shows that 1.12 ppm corresponds to the proton peak on the side chain -c-ch 3 of the dmc structural unit. the 1.58–1.71 ppm proton peak corresponds to the methylene group of -ch 2-ch-conh 2 in the am structural unit, 2.13–2.27 ppm corresponds to the proton peak of the -ch 2-ch-conh 2 hypo-methyl group in the am structural unit and 2.94–3.16