Bacterial degradation of acrylic oligomers and polymers

Kawai, Fusako

doi:10.1007/bf00192097

Cited by 47 publications

(35 citation statements)

References 17 publications

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“…This combination of effects likely leads to the production of polyacrylates of various chain lengths. Kawai (1993) documented that polyacrylate with molecular weight 10,000 is subject to complete mineralization, leading to the ultimate production of CO2 and H20.…”

Section: Polyacrylamide Degradation In Soil and Watermentioning

confidence: 99%

Polyacrylamide preparations for protection of water quality threatened by agricultural runoff contaminants

Entry

Sojka

Watwood

et al. 2002

Environmental Pollution

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"Capsule": Polyacrylamide preparations show promise in reducing flow of sediments, nutrients and microorganisms from animal production facilities. AbstractWaste streams associated with a variety of agricultural runoff sources are major contributors of nutrients, pesticides and enteric microorganisms to surface and ground waters. Water soluble anionic polyacrylamide (PAM) was found to be a highly effective erosion-preventing and infiltration-enhancing polymer, when applied at rates of 1-10 g m-3 in furrow irrigation water. Water flowing from PAM treated irrigation furrows show large reductions in sediment, nutrients and pesticides. Recently PAM and PAM + Ca0 and PAM + Al(SO4)3 mixtures have been shown to filter bacteria, fungi and nutrients from animal wastewater. Low concentrations of PAM [175-350 g PAM ha-' as PAM or as PAM + Ca0 and PAM + Al(SO 4) mixture] applied to the soil surface, resulted in dramatic decreases (10 fold) of total, coliform and fecal streptococci bacteria in cattle, fish and swine wastewater leachate and surface runoff. PAM treatment also filtered significant amounts of NH4, PO4 and total P in cattle and swine wastewater. This points to the potential of developing PAM as a water quality protection measure in combination with large-scale animal feeding operations. Potential benefits of PAM treatment of animal facility waste streams include: (1) low cost, (2) easy and quick application, (3) suitability for use with other pollution reduction techniques. Research on the efficacy of PAM for removal of protozoan parasites and viruses and more thorough assessment of PAM degradation in different soils is still needed to completely evaluate PAM treatment as an effective waste water treatment. We will present analysis and feasibility of using PAM, PAM + Al(SO4)3 , and PAM + CaO application for specific applications. Our results demonstrate their potential efficacy in reducing sediment, nutrients and microorganisms from animal production facility effluents. Published by Elsevier Science Ltd.

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Section: Polyacrylamide Degradation In Soil and Watermentioning

confidence: 99%

Polyacrylamide preparations for protection of water quality threatened by agricultural runoff contaminants

Entry

Sojka

Watwood

et al. 2002

Environmental Pollution

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“…Concerns have arisen about the widespread use of PAM in open agricultural environments -concerns that have been countered by various soil scientists studying PAM. PAM is a synthetic polymer that degrades at rates less than 10°/0 per year via deamination, shear-induced chain scission and photosensitive chain scission (Kawai, 1993;Barvenik et al, 1996;Kay-Shoemake and Watwood, 1996). With such stability, the potential for accumulation exists.…”

Section: Introductionmentioning

confidence: 99%

Biopolymer additives to reduce erosion-induced soil losses during irrigation

Orts

Sojka

Glenn

2000

Industrial Crops and Products

128

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A series of biopolymers added to irrigation water were tested for their efficacy in reducing shear-induced erosion in a laboratory-scale mini-furrow. Suspensions of chitosan, starch xanthate, cellulose xanthate, and acid-hydrolyzed cellulose microfibrils, at concentrations of 20, 80, 80, and 120 ppm, respectively, reduced suspended solids by more than 80%. None of these biopolymers, however, exhibited the > 90% runoff sediment reduction shown by the present industry standard, synthetic polyacrylamide polymers, PAM. PAM is effective at concentrations as low as 5 ppm. In field tests, chitosan solutions were only marginally effective in reducing runoff from the end of a 137 m long furrow, with indications that results were dependent on the length of the furrow. Sediment runoff of some clay-rich Northern California soils was reduced by up to 85% by increasing the concentration of exchangeable calcium to > 2.5mM. Calcium improved the sedimentation of the polyelectrolytic polymers in this study.

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“…Degradation of acrylic polymers and polyvinyl alcohol involving Microbacterium spp. has been reported (56,57).…”

Section: Discussionmentioning

confidence: 95%

Biodegradation of Endocrine Disruptors in Solid-Liquid Two-Phase Partitioning Systems by Enrichment Cultures

Villemur

Santos

Ouellette

et al. 2013

Appl Environ Microbiol

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Naturally occurring and synthetic estrogens and other molecules from industrial sources strongly contribute to the endocrine disruption of urban wastewater. Because of the presence of these molecules in low but effective concentrations in wastewaters, these endocrine disruptors (EDs) are only partially removed after most wastewater treatments, reflecting the presence of these molecules in rivers in urban areas. The development of a two-phase partitioning bioreactor (TPPB) might be an effective strategy for the removal of EDs from wastewater plant effluents. Here, we describe the establishment of three ED-degrading microbial enrichment cultures adapted to a solid-liquid two-phase partitioning system using Hytrel as the immiscible water phase and loaded with estrone, estradiol, estriol, ethynylestradiol, nonylphenol, and bisphenol A. All molecules except ethynylestradiol were degraded in the enrichment cultures. The bacterial composition of the three enrichment cultures was determined using 16S rRNA gene sequencing and showed sequences affiliated with bacteria associated with the degradation of these compounds, such as Sphingomonadales. One Rhodococcus isolate capable of degrading estrone, estradiol, and estriol was isolated from one enrichment culture. These results highlight the great potential for the development of TPPB for the degradation of highly diluted EDs in water effluents.

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Bacterial degradation of acrylic oligomers and polymers

Cited by 47 publications

References 17 publications

Polyacrylamide preparations for protection of water quality threatened by agricultural runoff contaminants

Polyacrylamide preparations for protection of water quality threatened by agricultural runoff contaminants

Biopolymer additives to reduce erosion-induced soil losses during irrigation

Biodegradation of Endocrine Disruptors in Solid-Liquid Two-Phase Partitioning Systems by Enrichment Cultures

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