Removal of Iodine-Containing X-ray Contrast Media from Environment: The Challenge of a Total Mineralization

Iodinated X-ray contrast media (ICM) as emerging micropollutants have attracted considerable attention in recent years due to their high detected concentration in water systems. It results in environmental issues partly due to the formation of toxic by-products during the disinfection process in wat...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2023-01, Vol.28 (1), p.341
Main Authors: Zhang, Wei, Fourcade, Florence, Amrane, Abdeltif, Geneste, Florence
Format: Article
Language:English
Subjects:
Adsorption
advanced oxidation processes (AOPs)
Biological treatment
Byproducts
Chemical Sciences
Composite materials
Contrast agents
Contrast Media
Control
depollution
Disinfection
Disinfection & disinfectants
Drinking water
Effluents
Environmental aspects
iodinated X-ray contrast media
Iodine
Methods
Mineralization
Oxidation
Oxidation-reduction reaction
Pharmaceuticals
Pollutants
Purification
reductive deiodination
Review
total mineralization
Toxicity
Urine
Water
Water Pollutants, Chemical - analysis
Water Purification - methods
Water treatment
X-Rays
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Summary:Iodinated X-ray contrast media (ICM) as emerging micropollutants have attracted considerable attention in recent years due to their high detected concentration in water systems. It results in environmental issues partly due to the formation of toxic by-products during the disinfection process in water treatment. Consequently, various approaches have been investigated by researchers in order to achieve ICM total mineralization. This review discusses the different methods that have been used to degrade them, with special attention to the mineralization yield and to the nature of formed by-products. The problem of pollution by ICM is discussed in the first part dedicated to the presence of ICM in the environment and its consequences. In the second part, the processes for ICM treatment including biological treatment, advanced oxidation/reductive processes, and coupled processes are reviewed in detail. The main results and mechanisms involved in each approach are described, and by-products identified during the different treatments are listed. Moreover, based on their efficiency and their cost-effectiveness, the prospects and process developments of ICM treatment are discussed.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules28010341