Enhanced textile wastewater treatment by a novel biofilm carrier with adsorbed nutrients

Mulinari, Jéssica; Andrade, Cristiano José de; Brandão, Heloisa de Lima; Silva, Adriano da; Souza, Sabrina da Silva de

doi:10.1016/j.bcab.2020.101527

Cited by 13 publications

(3 citation statements)

References 49 publications

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“…Therefore, the tensile properties of the samples do not change greatly on the basis that the main structure and the segment of the PVC matrix are not greatly changed. This result illustrates that the amount of each filler added is appropriate [36][37][38][39][40].…”

Section: Surface Morphology Of Pvc Biofilm Carriermentioning

confidence: 71%

Enhanced Hydrophilic and Electrophilic Properties of Polyvinyl Chloride (PVC) Biofilm Carrier

Cai

Wang

et al. 2020

Polymers

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Polyvinyl chloride (PVC) biofilm carrier is used as a carrier for bacterial adsorption in wastewater treatment. The hydrophilicity and electrophilicity of its surface play an important role in the adsorption of bacteria. The PVC biofilm carrier was prepared by extruder, and its surface properties were investigated. In order to improve the hydrophilicity and electrophilic properties of the PVC biofilm carrier, polyvinyl alcohol (PVA) and cationic polyacrylamide (cPAM) were incorporated into polyvinyl chloride (PVC) by blending. Besides, the surface area of the PVC biofilm carrier was increased by azodicarbonamide modified with 10% by weight of zinc oxide (mAC). The surface contact angle of PVC applied by PVA and cPAM at 5 wt %, 15 wt % was 81.6°, which was 18.0% lower than pure PVC. It shows the significant improvement of the hydrophilicity of PVC. The zeta potential of pure PVC was −9.59 mV, while the modified PVC was 14.6 mV, which proves that the surface charge of PVC changed from negative to positive. Positive charge is more conducive to the adsorption of bacteria. It is obvious from the scanning electron microscope (SEM) images that holes appeared on the surface of the PVC biofilm carrier after adding mAC, which indicates the increase of PVC surface area.

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Section: Surface Morphology Of Pvc Biofilm Carriermentioning

confidence: 71%

Enhanced Hydrophilic and Electrophilic Properties of Polyvinyl Chloride (PVC) Biofilm Carrier

Cai

Wang

et al. 2020

Polymers

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“…Kosaconia cowanii , formerly known as Enterobacter cowanii , is a microbial species that is recognized as a plant pathogen rather than a human pathogen [ 38 ]. Given its ability to live in different environments and under varying conditions, the bacterium is highly environmentally competitive; it has an enormous metabolic potential and is identified as a component of biofilm-forming communities [ 39 ]. Although reports of human infections are scarce, cases have been recently reported involving bacteremia in premature newborns and adults [ 40 , 41 ].…”

Section: Discussionmentioning

confidence: 99%

Are Enterobacteriaceae and Enterococcus Isolated from Powdered Infant Formula a Hazard for Infants? A Genomic Analysis

Parra‐Flores

Rosel

Daza-Prieto

et al. 2022

Foods

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Powdered infant formulas (PIF) are the most used dietary substitutes that are used in order to supplement breastfeeding. However, PIF are not sterile and can be contaminated with different microorganisms. The objective of this study was to genomically characterize Enterobacteriaceae (ENT) and Enterococcus strains that were isolated from PIF. Strains were identified by matrix-assisted laser desorption ionization–time-of-flight mass spectrometry (MALDI-TOF MS) and whole-genome sequencing (WGS). Genomic typing, detection of virulence, and resistance profiles and genes were performed with the Ridom SeqSphere+ software; the comprehensive antibiotic resistance database (CARD) platform; ResFinder and PlasmidFinder tools; and by the disk diffusion method. Nineteen isolates from PIF were analyzed, including ENT such as Kosakonia cowanii, Enterobacter hormaechei, Franconibacter helveticus, Mixta calida, and lactic acid bacteria such as Enterococcus faecium. The strains exhibited resistance to beta-lactams, cephalosporins, and macrolides. Resistance genes such as AcrAB-TolC, marA, msbA, knpEF, oqxAB, fosA, blaACT-7, blaACT-14, qacJ, oqxAB, aac(6’)-Ii, and msr(C); and virulence genes such as astA, cheB, cheR, ompA ompX, terC, ironA, acm, and efaAfm, adem were also detected. All the analyzed strains possessed genes that produced heat-shock proteins, such as IbpA and ClpL. In PIF, the presence of ENT and Enterococcus that are multiresistant to antibiotics—together with resistance and virulence genes—pose a health risk for infants consuming these food products.

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“…Due to its ability to live in different environments and conditions, the bacterium is highly competitive environmentally and has huge metabolic potential. In water, wastewater, and sewage, K. cowanii has been identified as a component of biofilm-forming organisms [ 4 ]. In plants, K. cowanii has been found to be endophytic in alfalfa ( Medicago sativa , Fabaceae) nodules [ 5 ] and in Artemisia nilagirica (Asteraceae), a traditional medicinal plant in Asia [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Novel Viruses That Lyse Plant and Human Strains of Kosakonia cowanii

Petrzik

Brázdová

Krawczyk

2021

Viruses

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Kosakonia cowanii (syn. Enterobacter cowanii) is a highly competitive bacterium that lives with plant, insect, fish, bird, and human organisms. It is pathogenic on some plants and an opportunistic pathogen of human. Nine novel viruses that lyse plant pathogenic strains and/or human strains of K. cowanii were isolated, sequenced, and characterized. Kc166A is a novel kayfunavirus, Kc261 is a novel bonnellvirus, and Kc318 is a new cronosvirus (all Autographiviridae). Kc237 is a new sortsnevirus, but Kc166B and Kc283 are members of new genera within Podoviridae. Kc304 is a new winklervirus, and Kc263 and Kc305 are new myoviruses. The viruses differ in host specificity, plaque phenotype, and lysis kinetics. Some of them should be suitable also as pathogen control agents.

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Enhanced textile wastewater treatment by a novel biofilm carrier with adsorbed nutrients

Cited by 13 publications

References 49 publications

Enhanced Hydrophilic and Electrophilic Properties of Polyvinyl Chloride (PVC) Biofilm Carrier

Enhanced Hydrophilic and Electrophilic Properties of Polyvinyl Chloride (PVC) Biofilm Carrier

Are Enterobacteriaceae and Enterococcus Isolated from Powdered Infant Formula a Hazard for Infants? A Genomic Analysis

Novel Viruses That Lyse Plant and Human Strains of Kosakonia cowanii

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