Cited by 75Advanced oxidation water treatmentPharmaceutical and Antibiotic Environmental ImpactsWater Treatment and Disinfection

Removal of drug losartan in environmental aquatic matrices by heat-activated persulfate: Kinetics, transformation products and synergistic effects

Ioannidi, Alexandra, Arvaniti, Olga S., Nika, Maria-Christina, Aalizadeh, Reza, Thomaidis, Nikolaos S., Mantzavinos, Dionissios, Frontistis, Zacharias·2022·Chemosphere

Abstract

In this study, the oxidative degradation of losartan (LOS), a widely administered medicine for high blood pressure by heat-activated persulfate was investigated. Increased temperature and persulfate concentration, as well as acidic conditions enhance the degradation efficiency of LOS, whose rate follows pseudo-first order kinetics. From the respective apparent rate constants in the range 40-60 °C, an apparent activation energy of 112.70 kJ/mol was computed. Radical scavenging tests demonstrated that both HO• and [Formula: see text] contribute towards LOS degradation. LOS degradation was suppressed in real water matrices including bottled water (BW) and secondary wastewater effluent (WW), while other experiments indicated that the presence of bicarbonates and humic acid negatively affected its oxidation. Instead, the addition of chloride ions at 250 mg/L resulted in a positive effect on LOS removal. The combination of heat-activated PS with low-frequency ultrasound exhibited a synergistic effect, with the ratio S being 2.29 in BW and 1.52 in WW. Five transformation products of LOS were identified through HRMS suspect and non-target screening approaches, among which two are reported for the first time. Using the in-house risk assessment program, ToxTrAMs was revealed that most of the identified TPs present higher toxicity than LOS against Daphnia magna.

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Crossref · 10.1016/j.chemosphere.2021.131952

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Authors
Ioannidi, A., Arvaniti, O. S., Nika, M.-C., Aalizadeh, R., Thomaidis, N. S., Mantzavinos, D., & Frontistis, Z.
Affiliations
  • University of Patras (GR)
  • National and Kapodistrian University of Athens (GR)
  • University of Western Macedonia (GR)
Corresponding author
Frontistis, Zacharias
Venue
Chemosphere
Publisher
Elsevier BV
Published
2022-01
Volume
287
Issue
Pt 1
Pages
131952
ISSN
0045-6535 (ISSN-L)
OpenAlex
W3194312168
Cited by
75
References
69
Citations by year
2026: 10 · 2025: 11 · 2024: 14 · 2023: 19 · 2022: 19 · 2021: 2
FWCI
4.02
Type
journal article
Language
en
Open access
closed
Locations
  • Chemosphere (publishedVersion)
  • PubMed (publishedVersion)
Funders
Hellenic Foundation for Research and Innovation (1281)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Advanced oxidation water treatment
  • Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Water Treatment and Disinfection
Keywords
losartan, heat-activated persulfate, advanced oxidation processes, pharmaceutical removal, degradation intermediates, pseudo-first-order kinetics, activation energy, hydroxyl radicals, sulfate radicals, chloride effect, humic acid, bicarbonate, low-frequency ultrasound, synergistic effect, wastewater effluent, bottled water, Daphnia magna toxicity
MeSH terms
Pharmaceutical Preparations, Hot Temperature, Kinetics, Oxidation-Reduction, Sulfates, Water Pollutants, Chemical, Losartan, Drinking Water

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