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Analysis of institutional authors

De Pedro, Zahara MCorresponding AuthorCasas, Jose AAuthor

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November 4, 2024
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Catalytic hydrodehalogenation of iodinated contrast agents in drinking water: A kinetic study

Publicated to: Journal Of Environmental Chemical Engineering. 12 (6): 114390- - 2024-12-01 12(6), DOI: 10.1016/j.jece.2024.114390

Authors:

del Olmo, RB; Martín, M; Nieto-Sandoval, J; Munoz, M; de Pedro, ZM; Casas, JA
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Affiliations

Univ Autonoma Madrid, Chem Engn Dept, Ctra Colmenar Km 15, Madrid 28049, Spain - Author
Univ Barcelona, Fac Chem, Dept Chem Engn & Analyt Chem, C Marti i Franques 1, Barcelona 08028, Spain - Author

Abstract

The occurrence of iodinated contrast media (ICM) in water bodies represents a significant threat for public health due to their strong biochemical stability and recalcitrance to conventional water treatment systems. In this work, the feasibility of catalytic hydrodehalogenation (HDH) for the degradation of a representative group of ICMs (iohexol (IHX), iopromide (IPR), iopamidol (IPM) and diatrizoic acid (DIA)) is investigated. Complete degradation and deiodination of the isolated ICMs (1.6 & sdot;10(- 2 )mmol L-1) was achieved in less than 30 min in the presence of 0.25 g L- 1 of different precious metal catalysts (Pd/Al2O3, Rh/Al2O3 and Pt/Al2O3) under ambient conditions, closing iodine balance by >95 %. Based on the identified reaction intermediates and final products, reaction mechanisms were accordingly proposed. A sequential reaction pathway was proposed for DIA removal, while reaction mechanisms encompassing both sequential and concerted reaction steps were proposed for the non-ionic ICMs (IHX, IPR, and IPM). Subsequent kinetic models, which successfully described experimental data, were developed from the elucidated reaction mechanisms, considering all species involved in the reaction. The versatility of the process was finally demonstrated in the treatment of real aqueous matrices (surface water and tap water) spiked with the ICMs mixture, except in the case of Pt/Al2O3 which suffered deactivation due to surface poisoning by halides. For this catalyst, kinetic constants ranged from 0.31 to 0.22 min(- 1) in deionized water, and from 0.04 to 0.08 min- 1 in surface water as the reaction matrix. Among the tested catalysts, Pd/Al2O3 showed the highest activity and stability for the removal of ICMs.
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Keywords

Aqueous-phase hydrodechlorinationCarbonCatalytic hydrodehalogenationDegradationDiatrizoateDrinking waterIodinated contrast mediaMediaPd/al2o3Pt/al2oRemovalRh catalystsRh/al2o3Supported pdU

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Journal Of Environmental Chemical Engineering due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2024 there are still no calculated indicators, but in 2023, it was in position 25/176, thus managing to position itself as a Q1 (Primer Cuartil), in the category Engineering, Chemical.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2026-01-21:

  • WoS: 1
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-01-21:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 5 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://repositorio.uam.es/handle/10486/715774
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Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (del Olmo, Raul B) and Last Author (CASAS DE PEDRO, JOSÉ ANTONIO).

the authors responsible for correspondence tasks have been del Olmo, Raul B and MARTINEZ DE PEDRO, ZAHARA.

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Awards linked to the item

This research has been supported by the Spanish Ministry of Science and Innovation and AEI through project PID2019-105079RB-100 and PID2022-139063OB-I00 funded by MCIN/AEI/10.13039/501100011033 and by ERDF A way of Making Europe.
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