Article
Engineering, Environmental
Wen-Long Wang, Yu-Jia Nong, Zheng-Wei Yang, Qian-Yuan Wu, Uwe Huebner
Summary: Due to the Covid-19 pandemic, the use of biocides has increased globally, leading to increased residuals in treated wastewater. This study investigated the chlorination kinetics, transformation pathways, and toxicity evolution of two typical isothiazolinone biocides, methyl-isothiazolinone and chloro-methyl-isothiazolinone. The results showed that acidic pH and elevated Cl- concentration favored the removal of these biocides, but the elimination rate in secondary effluent was low and alternative measures may be needed to reduce their discharge into the aquatic environment.
Article
Electrochemistry
Mark Ferguson, Mohamed Najah, Frederic Banville, Mohamed Boucherit, Naresh Miriyala, Jacques Renaud, Luc Frechette, Francois Boone, Serge Ecoffey, Serge A. Charlebois
Summary: We investigated the re-entrant undercut profile resulting from Au wet etching and compared the effects of an aqua regia-based solution and a commercial iodine-iodide-based etchant. Our results show that the aqua regia solution effectively mitigates galvanic undercutting and we discuss the electrochemical origin of this mitigation.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Environmental Sciences
Xiaotong Xu, Jing Kang, Jimin Shen, Shengxin Zhao, Binyuan Wang, Pengwei Yan, Qinglong Fu, Zhonglin Chen
Summary: This study analyzed the dissolved organic matter (DOM) profiles of water samples from a water source in northeastern China using high-resolution mass spectrometry (HRMS), and investigated its changes after chlorination. The study found that lignin substances were a significant proportion of DOM and chlorinated products, and were the main precursors of disinfection by-products (DBPs). Additionally, the degradation of two lignin monomers followed pseudo-first-order reaction kinetics, and the degradation rates increased with higher chlorine dosage, pH, and temperature.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Limei Han, Martin Lohse, Maolida Nihemaiti, Thorsten Reemtsma, Oliver J. Lechtenfeld
Summary: Non-target analysis of drinking water often requires solid-phase extraction (SPE) as a sample pretreatment to enrich the dissolved organic matter (DOM) and remove salts. However, highly polar and mobile DOM fractions are extracted with only low yield, limiting the understanding of drinking water treatment processes and the formation of disinfection by-products (DBPs).
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Guorui Qu, Yonggang Wei, Bo Li, Hua Wang
Summary: In the face of the growing demand for energy metals in the lithium industry, recycling spent lithium-ion batteries (LIBs) has become crucial for the sustainable development of related industries. The chlorination roasting process is an effective method for recycling spent LIBs. This study investigates the impact of graphite on the chlorination process of cathode materials, focusing on the reaction mechanism and kinetics. The presence of graphite accelerates the destruction of the LiCoO2 structure, reducing the pyrolysis temperature. Cobalt in the roasted product exists as metallic cobalt rather than cobalt oxide or cobalt chloride. The reaction model conforms to random nucleation and nuclear growth modes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Mauricius Marques dos Santos, Camille Cheriaux, Shenglan Jia, Mikael Thomas, Herve Gallard, Jean-Philippe Croue, Pascal Carato, Shane Allen Snyder
Summary: This study reveals that 1,3-diphenylguanidine (DPG) and its chlorinated by-products exhibit significant toxicity and genotoxicity, affecting cell bioenergetic processes and mitochondrial function.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Yali An, Xiaoyan Y. Ma, Wenfeng Chen, Wei Li, Siyan Yang, Rong Chen, Xiaochang C. Wang
Summary: This study revealed the impacts of inorganic ions in natural waters on the photochemical transformations of chlorinated DOM (DOM-Cl) under solar irradiation at different pH values and in the presence of NO3 and HCO3. Solar irradiation oxidized highly reactive aromatic structures and reduced the amounts of chromophoric and fluorescent DOM, especially under alkaline conditions. Alkaline conditions significantly promoted the degradation of detected DBPs and attenuation of biotoxicities, while NO3 and HCO3 generally impeded them. Removing the formed DBPs can be achieved through solar irradiation, improving the ecological safety of WWTP effluents.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Jingjing Zhu, Lumin Yang, Mengyuan Wang, Qing Zhang, Ying Zhang, Yuna Li
Summary: This study investigated the degradation of sulfamethoxazole (SMX) and the formation of disinfection by-products (DBPs) during chlorination in different systems. The results showed that the presence of bromide and iodide ions accelerated the degradation reaction and led to the formation of more toxic compounds. Nine DBPs, including three previously unidentified compounds, were identified using a non-targeted approach. The environmental accumulation potential and persistence of the degradation products were found to be minimal according to the predictions made using EPI Suite software.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Chemical
Xiaolu Xiong, Chenteng Sun, Guangshi Li, Caixiang Yu, Qian Xu, Xingli Zou, Hongwei Cheng, Kai Zhu, Shenggang Li, Xionggang Lu
Summary: Chalcocite is the main source for copper production worldwide, often coexisting with nickel sulfide. The chlorination mechanism of Cu2S with NH4Cl was studied using DFT calculations and experiments, revealing that NH4Cl can react with Cu2S directly to form H2S and NH3, with the presence of O2 promoting the process and leading to the formation of CuCl species eventually. Low-temperature roasting experiments confirmed the conversion of Cu2S to CuCl, with complete conversion achieved under air atmosphere. The study demonstrates a highly efficient and green process for the separation and extraction of valuable metals from high-grade matte.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Chrysoula Sfynia, Tom Bond, Rakesh Kanda, Michael R. Templeton
Summary: This study examined the occurrence of disinfection by-products (DBPs) formed by chlorination and chloramination in terms of space and time. The researchers conducted sampling at various treatment works and distribution system locations, and compared the results with laboratory-based simulated distribution system (SDS) tests. The study successfully demonstrated that SDS tests can accurately simulate the levels and speciation of certain DBPs in both chlorinated and chloraminated systems. The results also indicated that while the concentrations of trihalomethanes (THMs) and haloacetic acids (HAAs) generally increased with water age, the concentrations of haloacetonitriles (HANs) and haloacetamides (HAcAms) fluctuated and resulted in less pronounced overall increases. The study further explored the impact of switching the disinfectant in distribution, showing that chloramination reduced the yields of DBPs compared to chlorination, but shifted the speciation towards more brominated DBP species. Overall, this research is important as it highlights the suitability of SDS tests for estimating DBP concentrations in distribution systems and evaluating potential DBP minimisation strategies, with a score of 8 out of 10.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
Article
Environmental Sciences
Xiaoyi Lou, Zhiyuan Liu, Changling Fang, Yunyu Tang, Jie Guan, Yaoguang Guo, Xuan Zhang, Yongfu Shi, Dongmei Huang, Youqiong Cai
Summary: This study investigated the transformation behavior, intermediates analyses, and conversion pathway of antibiotic sulfamethoxazole (SMX) in chlorination process in fishery water, as well as the potential generation of halogenated disinfection byproducts. The results showed that the decomposition of SMX followed a first-order kinetic equation, with the presence of available chlorine, high temperature, and near-neutral pH promoting the removal of SMX and formation of halogenated acetic acids. Additionally, bromine was found to enhance the removal of SMX and production of brominated acetic acids. This research provides insights for evaluating the removal of sulfonamide antibiotic residues and the formation of halogenated DBPs during chlorination in aquaculture water.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Environmental
Chao Fang, Wenyuan Yang, Nannan Lu, Rong Xiao, Zhenqi Du, Qi Wang, Wenhai Chu
Summary: The pH of chlorination plays a crucial role in the formation of disinfection byproducts and their genotoxicity. This study found that alkaline conditions effectively reduce the genotoxicity induced by chlorination. However, alkaline chlorination promotes the formation of trihalomethanes at the expense of lowering genotoxicity. The contribution of measured DBPs to genotoxicity is low, suggesting the presence of unknown DBPs.
Article
Environmental Sciences
Jinlu Feng, Xi Li, Habasi Patrick Manzi, Claude Kiki, Lifeng Lin, Jiaxing Hong, Wenzhen Zheng, Chuchu Zhang, Shengda Wang, Qiaoting Zeng, Qian Sun
Summary: This study investigated the effect of chlorine on the removal of microcystin-LR (MC-LR) from water sources. The results showed that the rate of MC-LR chlorination depended on the chlorine dose and the composition of the water source. The transformation products of MC-LR did not induce genotoxicity/mutagenicity in bacteria.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Multidisciplinary
Caroline Smith Lewin, Olivier Herbinet, Gustavo A. Garcia, Philippe Arnoux, Luc-Sy Tran, Guillaume Vanhove, Laurent Nahon, Frederique Battin-Leclerc, Jeremy Bourgalais
Summary: This work presents experimental evidence of an elusive diradical pathway in the reaction between ethylene and ozone, contributing to the understanding of the mechanism of ethylene ozonolysis.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Giovanni Luongo, Marco Guida, Antonietta Siciliano, Giovanni Libralato, Lorenzo Saviano, Angela Amoresano, Lucio Previtera, Giovanni Di Fabio, Armando Zarrelli
Summary: The study found that DCF produces 14 degradation by-products during the chlorination process, some of which exhibit high toxicity. Ecotoxicological bioassays revealed that these by-products have significant effects on microalgae and crustaceans.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2021)
Article
Engineering, Chemical
Dean Song, Hanyang Cheng, Ruiping Liu, Zhimin Qiang, Hong He, Huijuan Liu, Jiuhui Qu
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2017)
Article
Chemistry, Analytical
Dean Song, Rongning Liang, Xiaohua Jiang, Huiqing Sun, Fanyu Kong, Bo Lv, Qiannan Fang, Wei Qin
ANALYTICAL METHODS
(2018)
Article
Chemistry, Physical
Dean Song, Huiqing Sun, Xiaohua Jiang, Fanyu Kong, Zhimin Qiang, Aiqian Zhang, Huijuan Liu, Jiuhui Qu
JOURNAL OF MOLECULAR STRUCTURE
(2018)
Article
Chemistry, Analytical
Dean Song, Hanyang Cheng, Xiaohua Jiang, Huiqing Sun, Fanyu Kong, Rongning Liang, Zhimin Qiang, Huijuan Liu, Jiuhui Qu
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2018)
Article
Environmental Sciences
Dean Song, William A. Jefferson, Hanyang Cheng, Xiaohua Jiang, Zhimin Qiang, Hong He, Huijuan Liu, Jiuhui Qu
Article
Environmental Sciences
Yingjie Yang, Raghvendra Pratap Singh, Dean Song, Qianru Chen, Xuebo Zheng, Chengsheng Zhang, Minggang Zhang, Yiqiang Li
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2020)
Article
Environmental Sciences
Xiaohua Jiang, Dean Song, Dabin Wang, Ruiming Zhang, Qiannan Fang, Huiqing Sun, Fanyu Kong
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2020)
Article
Environmental Sciences
Xiaohua Jiang, William A. Jefferson, Dean Song, Hanyang Cheng, Fengmin Li, Zhimin Qiang, Aiqian Zhang, Huijuan Liu, Jiuhui Qu
JOURNAL OF ENVIRONMENTAL SCIENCES
(2020)
Article
Chemistry, Analytical
Kaikai Liu, Yuehai Song, Dean Song, Rongning Liang
ANALYTICA CHIMICA ACTA
(2020)
Article
Environmental Sciences
Dean Song, Huiqing Sun, Yingjie Yang, Xiaolin Wang, Yan Sun, Xiuhua Liu, Mengjiao Huang, Chao Feng, Yijia Zhuang, Jiguang Zhang, Fanyu Kong
Summary: PAEs are widely used plasticizers and common environmental pollutants. Soils used for tobacco cultivation contain PAEs, primarily DBP and DEHP. The carcinogenic risk of PAE exposure to Chinese people is low at present, with DEHP exposure through dietary consumption being the main concern.
JOURNAL OF SOILS AND SEDIMENTS
(2021)
Article
Agronomy
Zhiyuan Li, Jiangtao Chao, Xiaoxu Li, Gongbo Li, Dean Song, Yongfeng Guo, Xinru Wu, Guanshan Liu
Summary: bZIP transcription factors play important regulatory roles in plant growth and stress responses. The study classified 132 bZIP genes in the tobacco genome into 11 groups and identified segmental duplications as crucial for gene family expansion. Expression analysis showed differential expression of NtbZIP genes in various tissues and stresses, with NtbZIP62 responding strongly to salinity stress and enhancing salt tolerance when overexpressed. This research provides valuable insights for future functional analyses of bZIP genes in tobacco.
Review
Plant Sciences
Dean Song, Xiaohua Jiang, Dabin Wang, Song Fang, Haixiang Zhou, Fanyu Kong
Summary: This review summarizes recent investigations on quinclorac, discussing its action mechanism, evolution of resistance, and potential risks caused by residue detection. The lack of remediation techniques is highlighted as an area for further research and development.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2022)
Article
Energy & Fuels
Yingnan Lin, Chan Wang, Guofeng Yu, Haoya Wang, Rongning Liang, Fanyu Kong, Dean Song
Summary: Utilizing renewable and green biomass for energy and chemical supply is a promising solution to overcome fossil resource shortage and ecological deterioration. A combination strategy involving hydrothermal extraction, natural seawater extraction, and residual solid pyrolysis has been developed to achieve efficient and complete biomass utilization.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Multidisciplinary
Dabin Wang, Lixia Zhao, Dean Song, Jun Qiu, Fanyu Kong, Liang-Hong Guo
Article
Chemistry, Multidisciplinary
William A. Jefferson, Chengzhi Hu, Dean Song, Hong He, Jiuhui Qu