Article
Environmental Sciences
Heng Song, Zhi-Qiang Sun, Da-Long Li, Jing Zhang, Xiao-Qun Zhou, Xiang-Rui Pan, Lu Wang, Yan-Jun Xin, Yu-Lei Liu, Jun Ma
Summary: This study investigated the formation of iodinated aromatic disinfection byproducts in the presence of iodide and organic compounds under different HOCl:NH3-N molar ratios. Various iodinated DBPs were identified and the possible pathways for their formation were proposed. The concentration of iodinated aromatic DBPs remained stable at a 1:1 molar ratio, but decreased over time when the ratio was 6:1, with active chlorine as the main disinfectant in the system. These findings can be used to control the formation of hazardous iodinated aromatic DBPs in iodine-containing water disinfection processes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Yanpeng Gao, Junlang Qiu, Yuemeng Ji, Nicholas J. P. Wawryk, Taicheng An, Xing-Fang Li
Summary: This study used computational modeling to investigate the iodination mechanism of aromatic contaminants. It was found that the formation of hydroxylated tyrosylglycine is favored over iodinated tyrosylglycine, but experimental results detected the presence of iodinated tyrosylglycine instead. Further research revealed the thermodynamic role of the reactive iodine species H2OI+ in the formation of aromatic iodinated disinfection byproducts.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Shakhawat Chowdhury
Summary: Seawater intrusion increases the concentrations of bromide and iodide ions in coastal groundwater and surface water sources, leading to the formation of disinfection byproducts that are cyto-and genotoxic. The increase in seawater content affects the formation and toxicity of THMs and HAAs. Reducing seawater intrusion is crucial in mitigating these risks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Phacharapol Induvesa, Chalita Ratanatawanate, Aunnop Wongrueng, Patiparn Punyapalakul
Summary: This study investigated the selective adsorption mechanisms of five iodinated trihalomethanes (ITHMs) onto modified HKUST-1 materials. It was found that the modified HKUST-1 showed higher adsorption rates and capacities for ITHMs compared to the pristine HKUST-1. The primary adsorptive mechanism of HK-SH involved ion dipole interactions and Lewis acid-base reactions, while the selective adsorption of ITHMs onto HK-MPTS was influenced by their log K-ow values.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Review
Microbiology
Eva Duborska, Katarina Balikova, Michaela Matulova, Ondrej Zverina, Bence Farkas, Pavol Littera, Martin Urik
Summary: Iodine, an essential micronutrient for most living beings including humans, plays a crucial role in the global geochemical cycle. Its production of volatile methylated iodides is important for mitigating climate change, making its biogeochemistry worthy of study. This review aims to provide information on its origin, global fluxes, and production mechanisms in the environment.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Bruno Azambre, Mouheb Chebbi, Nagham Ibrahim
Summary: In this study, the performances of silver-impregnated adsorbents prepared from different host supports were compared for the capture of I-2 and CH3I. It was found that the characteristics of silver species are strongly influenced by the thermal treatment and stability of the supports. I-2 adsorption on silver sites was quantitative, while a high proportion of cationic silver species was essential for increasing CH3I adsorption.
Article
Engineering, Environmental
Yuanxiang Mao, Yifei Wu, Xiaoli Lu, Caiping Sun, Chenglin Li, Yuzhe Chen, Lei Jiang, Qiushi Shen, Qian Zhang, Caocong Liu, Jialiang Liang, Huiyu Dong, Lan Huang, Fangying Ji
Summary: This study proposes a combination of zero-valent iron (ZVI) and peroxymonosulfate (PMS) for the removal of organic precursors of highly toxic iodinated disinfection by-products (I-DBPs) during the coagulation process. The combination effectively decomposes the organic precursor iopamidol (IPM) through the formation of hydroxyl and sulfate radicals. It was found that the presence of common cations further enhances the removal of IPM, while the anions in conventional coagulants have a weak effect. This process also reduces the formation of I-DBPs during disinfection, especially when natural organic matter (NOM) is present.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Xin-Yang Zhang, Ye Du, Yao Lu, Wen-Long Wang, Qian-Yuan Wu
Summary: This study evaluated the formation and toxicity of nine newly identified brominated disinfection byproducts (Br-DBPs) in ozonated Br--containing wastewater. The results showed that these Br-DBPs have high toxicity and are of great value for future research on Br-DBPs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Endocrinology & Metabolism
Kosuke Inoue, Rong Guo, Martin L. L. Lee, Ramin Ebrahimi, Natalia V. V. Neverova, Jesse W. W. Currier, Muhammad T. T. Bashir, Angela M. M. Leung
Summary: This retrospective cohort study using the U.S. Veterans Health Administration database found an association between iodine exposure and increased risk of thyroid dysfunction, particularly in men.
Article
Engineering, Environmental
Ruixin Qu, Shunke Ding, Haixin Li, Pin Wang, Lixing Pan, Wenhai Chu
Summary: Our recent study validates that household cooking with seaweed salt and chloraminated water can significantly promote the formation of iodinated disinfection by-products (I-DBPs). The research investigates the effect of different disinfectant species on I-DBP formation from seaweed salt. The findings indicate that the addition of seaweed salt increases the concentration of I-THMs in tap water after simulated household cooking.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
Article
Biochemical Research Methods
Elham Sookhaki, Mansoor Namazian
Summary: Thermodynamic quantities of some iodinated compounds were studied using ab initio and density functional theory calculations. The impact of iodine atoms on the change of enthalpies for deprotonation of iodobenzenes has been investigated, with a proposed mathematical model. The acidity of diiodophenols as a model for the thyroxin hormone was successfully calculated, along with barriers for nucleophilic reactions of substituted methyl iodides characterized by double-well potentials.
JOURNAL OF MOLECULAR GRAPHICS & MODELLING
(2021)
Article
Engineering, Environmental
Songshan Zhao, Xianhai Yang, Huihui Liu, Yue Xi, Jing Li
Summary: The potential disrupting effects and binding mechanisms of wastewater-derived disinfection byproducts (DBPs) on Chinese rare minnow transthyretin were studied. The results showed that some DBPs may have harmful effects on the endocrine system of aquatic organisms, and interspecies variation should be considered in future research.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jianrong Lin
Summary: The distribution and behavior of total dissolved iodine (TDI) and its species were studied in the Changjiang River Estuary (CJE). TDI shows a conservative behavior, while iodate, iodide, and dissolved organic iodine (DOI) exhibit different behaviors along the salinity gradient. The I/C ratio in DOI from different sources is significantly different, and the flux of iodine in the Changjiang River accounts for about 4% of the global river iodine flux.
WATER SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Xian-Shi Wang, Yu-Lei Liu, Mu Li, Heng Song, Xiao Huang, Zhi Gao, Jing Zhang, Chong-Wei Cui, Bai-Cang Liu, Jun Ma, Lu Wang
Summary: This study identified the presence of milligram per liter levels of iodophenols and micrograms per liter to milligrams per liter levels of iodide and total organic iodine in river water, wastewater treatment plant effluent, and medical wastewater. Oxidation experiments showed that ferrate could oxidize iodide, total organic iodine, and iodophenols, leading to their deiodination. Pre-oxidation with ferrate was effective in inhibiting the formation of iodinated disinfection by-products.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Nutrition & Dietetics
Lijun Fan, Yang Du, Fangang Meng, Lixiang Liu, Ming Li, Peng Liu, Dianjun Sun
Summary: This study aims to establish a process for determining the iodine content in salt for China and provide references for other countries. Through field investigations and data analysis, appropriate iodine content ranges for different populations in China have been determined.
Article
Engineering, Environmental
Jiaqi Liu, Xiangru Zhang, Yu Li, Wanxin Li, Chen Hang, Virender K. Sharma
Article
Environmental Sciences
Wanxin Li, Yu Li, Xiangru Zhang, Jiarui Han, Xiaohu Zhu, Ka Chun Choi, Jingyi Jiang
Article
Engineering, Environmental
Jingyi Jiang, Jiarui Han, Xiangru Zhang
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2020)
Article
Engineering, Environmental
Weiwei Cai, Jiarui Han, Xiangru Zhang, Yu Liu
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Engineering, Environmental
Dan Zhang, Yun Wu, Xiangru Zhang, Wenbin Li, Yan Li, Aimin Li, Yang Pan
Article
Engineering, Environmental
Jiarui Han, Xiangru Zhang, Wanxin Li, Jingyi Jiang
Summary: Chlorine impurity in chlorine dioxide solution impacts disinfection efficiency and DBPs formation. Studies showed that 5% chlorine impurity generated the lowest level of organic halogenated DBPs, while higher developmental toxicity was induced with higher chlorine impurity.
Article
Engineering, Environmental
Jiarui Han, Xiangru Zhang, Jingyi Jiang, Wanxin Li
Summary: The study developed an effective method with ultraperformance liquid chromatography to analyze the DBP mixture from chlorination of bromide-rich raw water, separating them into aliphatic and aromatic fractions. The results showed that aromatic fractions accounted for a significant portion of the TOX and developmental toxicity in the original chlorinated water samples, indicating that the overall developmental toxicity of chlorinated water is mainly attributed to aromatic halo-DBPs with high bioconcentration potential.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Review
Engineering, Environmental
Yun Yang, Xiangru Zhang, Jingyi Jiang, Jiarui Han, Wanxin Li, Xiaoyan Li, Kenneth Mei Yee Leung, Shane A. Snyder, Pedro J. J. Alvarez
Summary: This review examines the issue of micropollutants in aquatic environments and presents a ranked list of globally important micropollutants for risk management and remediation efforts.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Yu Li, Wanxin Li, Xiangru Zhang, Jingyi Jiang
Summary: This study examined the effects of ultrasonication on the formation and toxicity of disinfection byproducts in saline wastewater effluents. It was found that ultrasonic horn pretreatment significantly reduced the levels of toxic substances, with the maximum toxicity reduction occurring in samples with ultrasonic horn pretreatment.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2022)
Article
Engineering, Environmental
Wanxin Li, Xiangru Zhang, Jiarui Han
Summary: A new reaction pathway in the chlorination of acetaminophen, involving oxidative coupling reactions via acetaminophen radicals, was investigated in this study. Over 20 polymeric products, some similar to polychlorinated biphenyls, were detected in chlorinated acetaminophen samples using advanced analytical techniques. Quantum chemical calculations revealed the bonding processes and kinetics of both C-C and C-O bonding products. This study suggests that chlorination may cause both degradation and upgradation of phenolic compounds or contaminants.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Wanxin Li, Jiarui Han, Xiangru Zhang, Guanghao Chen, Yun Yang
Summary: This study uses experimental and modeling approaches to investigate the contributions of emerging pharmaceuticals to the formation and toxicity of disinfection byproducts (DBPs) during drinking water chlorination. It was found that pharmaceuticals and natural organic matter (NOM) contribute to the formation of total organic halogens (TOX) in varying degrees. The toxicity test results show that chlorination increases the toxicity of pharmaceuticals by converting them into more toxic DBPs, which can significantly contribute to the overall developmental toxicity of chlorinated waters.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Li Long, Lu Elfa Peng, Shenghua Zhou, Qimao Gan, Xianhui Li, Jingyi Jiang, Jiarui Han, Xiangru Zhang, Hao Guo, Chuyang Tang
Summary: The presence of disinfection by-products in drinking water poses a serious threat to water safety and public health. Nanofiltration is a promising technique for removing these by-products and producing clean water. We have developed highly selective nanofiltration membranes that can effectively reject disinfection by-products while allowing essential minerals to pass through. These membranes were fabricated using interfacial polymerization with the addition of NaHCO3, which led to improved membrane performance and higher selectivity for minerals over disinfection by-products.
Article
Environmental Sciences
Long Pan, Xiangru Zhang, Mengting Yang, Jiarui Han, Jingyi Jiang, Wanxin Li, Bo Yang, Xiaoyan Li
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Review
Environmental Sciences
Mengting Yang, Hannah K. Liberatore, Xiangru Zhang
CURRENT OPINION IN ENVIRONMENTAL SCIENCE & HEALTH
(2019)