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Yan H, Zhang T, Yang Y, Li J, Liu Y, Qu D, Feng L, Zhang L. Occurrence of iodinated contrast media (ICM) in water environments and their control strategies with a particular focus on iodinated by-products formation: A comprehensive review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:119931. [PMID: 38154220 DOI: 10.1016/j.jenvman.2023.119931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 12/03/2023] [Accepted: 12/23/2023] [Indexed: 12/30/2023]
Abstract
Iodinated contrast media (ICM), one of the pharmaceutical and personal care products (PPCPs), are frequently detected in various water bodies due to the strong biochemical stability and recalcitrance to conventional water treatment. Additionally, ICM pose a risk of forming iodinated by-products that can be detrimental to the aquatic ecosystem. Consequently, effectively removing ICM from aqueous environments is a significant concern for environmental researchers. This article provides a comprehensive review of the structural characteristics of ICM, their primary source (e.g., domestic and hospital wastewater), detected concentrations in water environments, and ecological health hazards associated with them. The current wastewater treatment technologies for ICM control are also reviewed in detail with the aim of providing a reference for future research. Prior researches have demonstrated that traditional treatment processes (such as physical adsorption, biochemical method and chemical oxidation method) have inadequate efficiencies in the removal of ICM. Currently, the application of advanced oxidation processes to remove ICM has become extensive, but there are some issues like poor deiodination efficiency and the risk of forming toxic intermediates or iodinated by-products. Conversely, reduction technologies have a high deiodination rate, enabling the targeted removal of ICM. But the subsequent treatment issues related to iodine (such as I- and OI-) are often underestimated, potentially generating iodinated by-products during the subsequent treatment processes. Hence, we proposed using combined reduction-oxidation technologies to remove ICM and achieved synchronous control of iodinated by-products. In the future, it is recommended to study the degradation efficiency of ICM and the control efficiency of iodinated by-products by combining different reduction and oxidation processes.
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Affiliation(s)
- Hao Yan
- Beijing Key Lab for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Tao Zhang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yi Yang
- University of Science and Technology of China, Anhui 230026, China
| | - Juan Li
- Advanced Interdisciplinary Institute of Environment and Ecology, Beijing Normal University, Zhuhai 519087, China
| | - Yongze Liu
- Beijing Key Lab for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
| | - Dan Qu
- Beijing Key Lab for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Li Feng
- Beijing Key Lab for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Liqiu Zhang
- Beijing Key Lab for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
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Cheng X, Xia Y, Ji Q, Ji Q, Li H, Guo J, Li S, Yang S, Zhang L, He H. Occurrence and risk of iodinated X-ray contrast media in source and tap water from Jiangsu province, China. JOURNAL OF HAZARDOUS MATERIALS 2023; 444:130399. [PMID: 36403453 DOI: 10.1016/j.jhazmat.2022.130399] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/31/2022] [Accepted: 11/12/2022] [Indexed: 06/16/2023]
Abstract
Microcontaminants in the water environment have received increasing attention due to their adverse effects on human health and wildlife. However, iodinated X-ray contrast media (ICM), a type of microcontaminants, have not yet been systematically documented in source and tap water. This study investigated ICM in water samples via a sampling activity from 25 drinking water sources and their corresponding 30 household taps in south-central Jiangsu Province, China. The total concentrations of ICM ranged from 14.2 to 138.5 ng/L in source water and 3.7 to 101.3 ng/L in tap water, respectively. The calculated average water treatment efficiency to remove ICM is 38.3% with large variation under different processes (ranging from 7.3% to 75.7%), which implied that ICM could not be effectively removed using current treatment technologies. By integrating other ICM into the predominant compound iohexol with relative potency factors, the health risks of total ICM through water consumption were assessed using the Monte Carlo simulation. The results concluded that the risk of ingesting ICM through tap water was not a major health concern for adults, teens, or children in the study area. Nevertheless, due to the lack of long-term toxicity data relevant for humans for ICM, this risk may be underestimated, which requires further research.
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Affiliation(s)
- Xinying Cheng
- School of Environment, Nanjing Normal University, Nanjing, Jiangsu 210023, P.R. China
| | - Yubao Xia
- School of Environment, Nanjing Normal University, Nanjing, Jiangsu 210023, P.R. China
| | - Qiuyi Ji
- School of Environment, Nanjing Normal University, Nanjing, Jiangsu 210023, P.R. China
| | - Qingsong Ji
- School of Environment, Nanjing Normal University, Nanjing, Jiangsu 210023, P.R. China
| | - Huiming Li
- School of Environment, Nanjing Normal University, Nanjing, Jiangsu 210023, P.R. China
| | - Jiehong Guo
- Masonic Cancer Center, University of Minnesota at Twin Cities, Minneapolis, Minnesota 55455, USA; Department of Civil, Environmental, and Geospatial Engineering, Michigan Technological University, Michigan 49931, USA
| | - Shiyin Li
- School of Environment, Nanjing Normal University, Nanjing, Jiangsu 210023, P.R. China
| | - Shaogui Yang
- School of Environment, Nanjing Normal University, Nanjing, Jiangsu 210023, P.R. China
| | - Limin Zhang
- School of Environment, Nanjing Normal University, Nanjing, Jiangsu 210023, P.R. China; Green Economy Development Institute, Nanjing University of Finance and Economics, Nanjing, Jiangsu 210023, P.R. China
| | - Huan He
- School of Environment, Nanjing Normal University, Nanjing, Jiangsu 210023, P.R. China; College of Ecological and Resource Engineering, Fujian Provincial Key laboratory of Eco-Industrial Green Technology, Wuyi University, Wuyishan, Fujian 354300, P.R. China.
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Ambriz-Mexicano I, González-Juárez S, Ruiz-Ordaz N, Galíndez-Mayer J, Santoyo-Tepole F, Juárez-Ramírez C, Galar-Martínez M. Integrated adsorption and biological removal of the emerging contaminants ibuprofen, naproxen, atrazine, diazinon, and carbaryl in a horizontal tubular bioreactor. Bioprocess Biosyst Eng 2022; 45:1547-1557. [PMID: 35953615 DOI: 10.1007/s00449-022-02764-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 07/26/2022] [Indexed: 11/28/2022]
Abstract
Groundwater and surface water bodies may have contaminants from urban, industrial, or agricultural wastewater, including emerging contaminants (ECs) or micropollutants (MPs). Frequently, they are not efficiently removed by microbial action due to their minimal concentration in water and the low microbiota affinity for complex compounds. This work developed a process allowing the adsorption of contaminants and their simultaneous biodegradation using horizontal tubular fixed-bed biofilm reactors (HTR). Each HTR has two zones: an equalizer-aerator of the incoming liquid flow and a fixed bed zone. This zone was packed with a mixed support material consisting of granular bio-activated carbon (Bio-GAC) and porous material that increases the bed permeability, thus decreasing the pressure drop. Five microbial communities were acclimated and immobilized in granular activated carbon (GAC) to obtain different specialized Bio-GAC particles able to remove the micropollutants ibuprofen, naproxen, atrazine, carbaryl, and diazinon. The Bio-GAC particles were transferred to HTRs continuously run in microaerophilia at several MPs loading rates. Under these conditions, the removal efficiencies of MPs, except atrazine and carbaryl, were around 100.
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Affiliation(s)
| | | | - Nora Ruiz-Ordaz
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Mexico, México.
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