Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/159690
Title: Formation and control of disinfection by-products from iodinated contrast media attenuation through sequential treatment processes of ozone-low pressure ultraviolet light followed by chlorination
Authors: Lopez-Prieto, Israel J.
Park, Minkyu
AzadiAghdam, Mojtaba
Pan, Hongrui
Jones, Sara L.
Snyder, Shane Allen
Keywords: Engineering::Environmental engineering
Issue Date: 2021
Source: Lopez-Prieto, I. J., Park, M., AzadiAghdam, M., Pan, H., Jones, S. L. & Snyder, S. A. (2021). Formation and control of disinfection by-products from iodinated contrast media attenuation through sequential treatment processes of ozone-low pressure ultraviolet light followed by chlorination. Chemosphere, 278, 130394-. https://dx.doi.org/10.1016/j.chemosphere.2021.130394
Journal: Chemosphere
Abstract: Different groups of disinfection by-products (DBPs) were studied through the degradation of iopamidol by the sequential oxidation process of ozone-low pressure ultraviolet light (O3-LPUV) followed by chlorination. This paper investigates the attenuation of iopamidol under this sequential treatment and the effect of chlorine contact time (30 min versus 3 days) to control the formation potential of DBPs: trihalomethanes (THMs), haloacetonitriles (HANs) and haloacetamides (HAMs). Thirty target DBPs among the 9 iodinated-DBPs (I-DBPs), were monitored throughout the sequential treatment. Results showed that O3-LPUV removed up to 99% of iopamidol, while ozone and LPUV alone removed only 90% and 76% respectively. After chlorine addition, O3-LPUV yielded 56% lower I-DBPs than LPUV. Increasing chlorine contact time resulted in higher concentrations of all DBP groups (THMs, HANs, and HAMs), with the exception of I-DBPs. One new iodinated-haloacetamide, namely chloroiodoacetamide (CIACM) and one iodoacetonitrile (IACN) were detected. These results suggest the iodine incorporated in iopamidol may be a precursor for iodinated-nitrogenous-DBPs, which are currently not well studied.
URI: https://hdl.handle.net/10356/159690
ISSN: 0045-6535
DOI: 10.1016/j.chemosphere.2021.130394
Rights: © 2021 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:NEWRI Journal Articles

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