Ketoprofen removal by O3 and O3/UV processes: Kinetics, transformation products and ecotoxicity

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

Ozonation (O3) and its combination with ultraviolet radiation (O3/UV) were used to decompose ketoprofen (KET). Depending on the initial KET concentration, fourteen to fifty time's faster KET degradation was achieved using combined O3/UV method compared to simple ozonation. Using both methods, formation of four major aromatic transformation products were observed: 3-(1-hydroxyethyl)benzophenone, 3-(1-hydroperoxyethyl) benzophenone, 1-(3-benzoylphenyl) ethanone and 3-ethylbenzophenone. In the combined treatment the degradation was mainly due to the direct effect of UV light, however, towards the end of the treatment, O3 highly contributed to the mineralization of small carboxylic acids. High (~90%) mineralization degree was achieved using the O3/UV method. Toxicity tests performed using representatives of three trophic levels of the aquatic ecosystems (producers, consumers and decomposers) Pseudokirchneriella subcapitata green algae, Daphnia magna zooplanktons and Vibrio fischeri bacteria showed that under the used experimental conditions the transformation products have significantly higher toxicity towards all the test organisms, than KET itself. The bacteria and the zooplanktons showed higher tolerance to the formed products than algae. The measured toxicity correlates well with the concentration of the aromatic transformation products, therefore longer treatments than needed for complete degradation of KET are strongly suggested, in order to avoid possible impact of aromatic transformation products on the aquatic ecosystem.

Original languageEnglish
Pages (from-to)178-184
Number of pages7
JournalScience of the Total Environment
Volume472
DOIs
Publication statusPublished - Feb 15 2014

Fingerprint

Ketoprofen
Toxicity
Aquatic ecosystems
Ozonization
Algae
Degradation
Ultraviolet radiation
kinetics
Kinetics
Bacteria
aquatic ecosystem
degradation
Carboxylic acids
zooplankton
mineralization
toxicity
bacterium
ultraviolet radiation
carboxylic acid
Carboxylic Acids

Keywords

  • AOP
  • Daphnia magna
  • Ketoprofen
  • Ozonation
  • Pseudokirchneriella subcapitata
  • Vibrio fischeri

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution
  • Waste Management and Disposal
  • Environmental Engineering

Cite this

@article{329c95310a7b48adbc8613ccd69eb219,
title = "Ketoprofen removal by O3 and O3/UV processes: Kinetics, transformation products and ecotoxicity",
abstract = "Ozonation (O3) and its combination with ultraviolet radiation (O3/UV) were used to decompose ketoprofen (KET). Depending on the initial KET concentration, fourteen to fifty time's faster KET degradation was achieved using combined O3/UV method compared to simple ozonation. Using both methods, formation of four major aromatic transformation products were observed: 3-(1-hydroxyethyl)benzophenone, 3-(1-hydroperoxyethyl) benzophenone, 1-(3-benzoylphenyl) ethanone and 3-ethylbenzophenone. In the combined treatment the degradation was mainly due to the direct effect of UV light, however, towards the end of the treatment, O3 highly contributed to the mineralization of small carboxylic acids. High (~90{\%}) mineralization degree was achieved using the O3/UV method. Toxicity tests performed using representatives of three trophic levels of the aquatic ecosystems (producers, consumers and decomposers) Pseudokirchneriella subcapitata green algae, Daphnia magna zooplanktons and Vibrio fischeri bacteria showed that under the used experimental conditions the transformation products have significantly higher toxicity towards all the test organisms, than KET itself. The bacteria and the zooplanktons showed higher tolerance to the formed products than algae. The measured toxicity correlates well with the concentration of the aromatic transformation products, therefore longer treatments than needed for complete degradation of KET are strongly suggested, in order to avoid possible impact of aromatic transformation products on the aquatic ecosystem.",
keywords = "AOP, Daphnia magna, Ketoprofen, Ozonation, Pseudokirchneriella subcapitata, Vibrio fischeri",
author = "E. Ill{\'e}s and Emese Szab{\'o} and E. Tak{\'a}cs and L. Wojn{\'a}rovits and A. Dombi and K. Gajda-Schrantz",
year = "2014",
month = "2",
day = "15",
doi = "10.1016/j.scitotenv.2013.10.119",
language = "English",
volume = "472",
pages = "178--184",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier",

}

TY - JOUR

T1 - Ketoprofen removal by O3 and O3/UV processes

T2 - Kinetics, transformation products and ecotoxicity

AU - Illés, E.

AU - Szabó, Emese

AU - Takács, E.

AU - Wojnárovits, L.

AU - Dombi, A.

AU - Gajda-Schrantz, K.

PY - 2014/2/15

Y1 - 2014/2/15

N2 - Ozonation (O3) and its combination with ultraviolet radiation (O3/UV) were used to decompose ketoprofen (KET). Depending on the initial KET concentration, fourteen to fifty time's faster KET degradation was achieved using combined O3/UV method compared to simple ozonation. Using both methods, formation of four major aromatic transformation products were observed: 3-(1-hydroxyethyl)benzophenone, 3-(1-hydroperoxyethyl) benzophenone, 1-(3-benzoylphenyl) ethanone and 3-ethylbenzophenone. In the combined treatment the degradation was mainly due to the direct effect of UV light, however, towards the end of the treatment, O3 highly contributed to the mineralization of small carboxylic acids. High (~90%) mineralization degree was achieved using the O3/UV method. Toxicity tests performed using representatives of three trophic levels of the aquatic ecosystems (producers, consumers and decomposers) Pseudokirchneriella subcapitata green algae, Daphnia magna zooplanktons and Vibrio fischeri bacteria showed that under the used experimental conditions the transformation products have significantly higher toxicity towards all the test organisms, than KET itself. The bacteria and the zooplanktons showed higher tolerance to the formed products than algae. The measured toxicity correlates well with the concentration of the aromatic transformation products, therefore longer treatments than needed for complete degradation of KET are strongly suggested, in order to avoid possible impact of aromatic transformation products on the aquatic ecosystem.

AB - Ozonation (O3) and its combination with ultraviolet radiation (O3/UV) were used to decompose ketoprofen (KET). Depending on the initial KET concentration, fourteen to fifty time's faster KET degradation was achieved using combined O3/UV method compared to simple ozonation. Using both methods, formation of four major aromatic transformation products were observed: 3-(1-hydroxyethyl)benzophenone, 3-(1-hydroperoxyethyl) benzophenone, 1-(3-benzoylphenyl) ethanone and 3-ethylbenzophenone. In the combined treatment the degradation was mainly due to the direct effect of UV light, however, towards the end of the treatment, O3 highly contributed to the mineralization of small carboxylic acids. High (~90%) mineralization degree was achieved using the O3/UV method. Toxicity tests performed using representatives of three trophic levels of the aquatic ecosystems (producers, consumers and decomposers) Pseudokirchneriella subcapitata green algae, Daphnia magna zooplanktons and Vibrio fischeri bacteria showed that under the used experimental conditions the transformation products have significantly higher toxicity towards all the test organisms, than KET itself. The bacteria and the zooplanktons showed higher tolerance to the formed products than algae. The measured toxicity correlates well with the concentration of the aromatic transformation products, therefore longer treatments than needed for complete degradation of KET are strongly suggested, in order to avoid possible impact of aromatic transformation products on the aquatic ecosystem.

KW - AOP

KW - Daphnia magna

KW - Ketoprofen

KW - Ozonation

KW - Pseudokirchneriella subcapitata

KW - Vibrio fischeri

UR - http://www.scopus.com/inward/record.url?scp=84888414363&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84888414363&partnerID=8YFLogxK

U2 - 10.1016/j.scitotenv.2013.10.119

DO - 10.1016/j.scitotenv.2013.10.119

M3 - Article

C2 - 24291560

AN - SCOPUS:84888414363

VL - 472

SP - 178

EP - 184

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

ER -