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Statements

Subject Item
n2:RIV%2F70883521%3A28110%2F12%3A43868123%21RIV13-MSM-28110___
rdf:type
n10:Vysledek skos:Concept
dcterms:description
Polyvinylpyrrolidone (PVP) is a frequently used polymer in the pharmaceutical and foodstuff industries. Because it is not subject to metabolic changes and is virtually nondegradable, trace concentrations of PVP are often found in community wastewaters. The literature finds that the partial removal of PVP in wastewater treatment plants probably occurs through sorption. The primary objective of this study was to find an effective method to remove PVP from wastewaters. In this regard, the literature indicates the theoretical potential to use specific enzymes (e.g., γ-lactamases, amidases) to gradually degrade PVP molecules. Polyvinylpyrrolidone biodegradability tests were conducted using suitable heterogeneous cultures (activated sludge) collected from a conventional wastewater treatment plant, treatment plants connected to a pharmaceutical factory, and using select enzymes. Aerobic biodegradation of PVP in a conventional wastewater environment was ineffective, even after adaptation of activated sludge using the nearly identical monomer 1-methyl-2-pyrrolidone. Another potential method for PVP removal involves pretreating the polymer prior to biological degradation. Based on the results (approximately 10 to 15% biodegradation), pretreatment was partially effective, realistically, it could only be applied with difficulty at wastewater treatment plants. Sorption of PVP to an active carbon sorbent (Chezacarb S), which corresponded to the Langmuir isotherm, and sorption to activated sludge, which corresponded to the Freundlich isotherm, were also evaluated. From these sorption tests, it can be concluded that the considerable adsorption of PVP to activated sludge occurred primarily at low PVP concentrations. Based on the test results, the authors recommend the following methods for PVP removal from wastewater: (1) sorption; (2) application of specific microorganisms; and (3) alkaline hydrolysis, which is the least suitable of the three for use in wastewater treatment plants Polyvinylpyrrolidone (PVP) is a frequently used polymer in the pharmaceutical and foodstuff industries. Because it is not subject to metabolic changes and is virtually nondegradable, trace concentrations of PVP are often found in community wastewaters. The literature finds that the partial removal of PVP in wastewater treatment plants probably occurs through sorption. The primary objective of this study was to find an effective method to remove PVP from wastewaters. In this regard, the literature indicates the theoretical potential to use specific enzymes (e.g., γ-lactamases, amidases) to gradually degrade PVP molecules. Polyvinylpyrrolidone biodegradability tests were conducted using suitable heterogeneous cultures (activated sludge) collected from a conventional wastewater treatment plant, treatment plants connected to a pharmaceutical factory, and using select enzymes. Aerobic biodegradation of PVP in a conventional wastewater environment was ineffective, even after adaptation of activated sludge using the nearly identical monomer 1-methyl-2-pyrrolidone. Another potential method for PVP removal involves pretreating the polymer prior to biological degradation. Based on the results (approximately 10 to 15% biodegradation), pretreatment was partially effective, realistically, it could only be applied with difficulty at wastewater treatment plants. Sorption of PVP to an active carbon sorbent (Chezacarb S), which corresponded to the Langmuir isotherm, and sorption to activated sludge, which corresponded to the Freundlich isotherm, were also evaluated. From these sorption tests, it can be concluded that the considerable adsorption of PVP to activated sludge occurred primarily at low PVP concentrations. Based on the test results, the authors recommend the following methods for PVP removal from wastewater: (1) sorption; (2) application of specific microorganisms; and (3) alkaline hydrolysis, which is the least suitable of the three for use in wastewater treatment plants
dcterms:title
Removal of polyvinylpyrrolidone from wastewater using different methods Removal of polyvinylpyrrolidone from wastewater using different methods
skos:prefLabel
Removal of polyvinylpyrrolidone from wastewater using different methods Removal of polyvinylpyrrolidone from wastewater using different methods
skos:notation
RIV/70883521:28110/12:43868123!RIV13-MSM-28110___
n10:predkladatel
n11:orjk%3A28110
n3:aktivita
n20:P
n3:aktivity
P(ED2.1.00/03.0111), P(GAP108/10/0200)
n3:cisloPeriodika
12
n3:dodaniDat
n6:2013
n3:domaciTvurceVysledku
n7:8306397 n7:5962218 n7:9553630 n7:4956036 n7:1123548 n7:5127580 n7:8673667
n3:druhVysledku
n18:J
n3:duvernostUdaju
n5:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
164979
n3:idVysledku
RIV/70883521:28110/12:43868123
n3:jazykVysledku
n17:eng
n3:klicovaSlova
Activated sludge||Active carbon||Alkaline hydrolysis||Biodegradation||Polyvinylpyrrolidone||Sorption
n3:klicoveSlovo
n4:Activated%20sludge%7C%7CActive%20carbon%7C%7CAlkaline%20hydrolysis%7C%7CBiodegradation%7C%7CPolyvinylpyrrolidone%7C%7CSorption
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[38F4C1CBFAA6]
n3:nazevZdroje
Water Environment Research
n3:obor
n15:DJ
n3:pocetDomacichTvurcuVysledku
7
n3:pocetTvurcuVysledku
7
n3:projekt
n14:GAP108%2F10%2F0200 n14:ED2.1.00%2F03.0111
n3:rokUplatneniVysledku
n6:2012
n3:svazekPeriodika
84
n3:tvurceVysledku
Klívar, Stanislav Houser, Josef Julinová, Markéta Červenáková, Lenka Kupec, Jan Slavík, Roman Marušincová, Hana
n3:wos
000311942800007
s:issn
1061-4303
s:numberOfPages
10
n9:doi
10.2175/106143012X13373575830999
n16:organizacniJednotka
28110