Improvement of the biodegradability of diatrizoate by electroreduction of its amido groups

Zhang, Wei; Soutrel, Isabelle; Amrane, Abdeltif; Fourcade, Florence; Geneste, Florence

doi:10.1016/j.seppur.2021.120317

Cited by 1 publication

(1 citation statement)

References 36 publications

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“…However, the coulombic efficiencies decreased when very negative potentials were applied due to competition with hydrogen evolution. Electrodes with high hydrogen evolution overpotential can also be used to enhance the biodegradability of by-products resulting from the electroreduction of ICM [141]. It allows the electro-reduction of both carbon-iodide bounds and amido groups, leading to fewer biorecalcitrant by-products.…”

Section: Electroreductive Deiodinationmentioning

confidence: 99%

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

et al. 2023

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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.

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Section: Electroreductive Deiodinationmentioning

confidence: 99%