Removal of an X-Ray contrast chemical from tertiary treated wastewater: Investigation of persulfate-mediated photochemical treatment systems
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F18%3A43897179" target="_blank" >RIV/60076658:12520/18:43897179 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S092058611730754X" target="_blank" >https://www.sciencedirect.com/science/article/pii/S092058611730754X</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cattod.2017.11.002" target="_blank" >10.1016/j.cattod.2017.11.002</a>
Alternative languages
Result language
angličtina
Original language name
Removal of an X-Ray contrast chemical from tertiary treated wastewater: Investigation of persulfate-mediated photochemical treatment systems
Original language description
The degradation of 2.6 mu M (2 mg/L) iopamidol (IOPA), a commercially important nonionic, iodinated X-ray contrast chemical and model micropollutant, by UV-A and UV-C photo-assisted persulfate (PS) oxidation in real, tertiary treated municipal wastewater (Organic carbon = 12.4 mg/L; Alkalinity = 130 mg CaCO3/L; pH= 7.0) was investigated. Preliminary baseline experiments conducted in pure (distilled) water indicated that IOPA could be rapidly and completely removed even by UV-C treatment alone. In the presence of UV-A light, 100% IOPA removal could still be achieved in pure water by PS/UV-A treatment which was studied at varying conditions (0.10-1.00 mM; pH3-11). However, in real wastewater, addition of at least 0.10 mM and 1.00 mM PS was required to achieve high (> 90%) IOPA removals by the PS/UV-C and PS/UV-A treatment systems, respectively. PS consumption rates increased under UV-C radiation compared with UV-A radiation and in real wastewater compared to pure water. Organic carbon removals were appreciable for PS/UV-C (48%) and UV-C (40%) treatments in real wastewater. Toxicity assays carried out with the marine photobacteria Vibrio fischeri revealed that the toxicity response did not change significantly after photochemical treatment. According to the bioassay conducted with the freshwater microalga Pseudokirchneriella subcapitata, the toxicity increased after 155 min UV-C photolysis.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
—
Continuities
N - Vyzkumna aktivita podporovana z neverejnych zdroju
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Catalysis Today
ISSN
0920-5861
e-ISSN
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Volume of the periodical
313
Issue of the periodical within the volume
09/2018
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
8
Pages from-to
134-141
UT code for WoS article
000436452100021
EID of the result in the Scopus database
2-s2.0-85033402091