Article
Chemistry, Analytical
Xiao Liu, Langping Wu, Steffen Kuemmel, Matthias Gehre, Hans Hermann Richnow
Summary: A data treatment approach was developed to accurately determine δH-2 values below the linear range, which is valuable for assessing low-concentration organic contaminants. The method was calibrated and tested using laboratory reference materials and experimental data.
ANALYTICAL CHEMISTRY
(2023)
Article
Environmental Sciences
Juan Lv, Changyuan Ou, Mengya Fu, Zhiwei Xu
Summary: The study found that venlafaxine can be efficiently removed during disinfection processes, especially when reacted with ClO2. Higher dosage of disinfectant and mildly alkaline conditions enhance degradation of venlafaxine. However, the reactions are impacted by real water matrices, with the presence of chloride and low concentrations of fulvic acid promoting the decomposition process.
Article
Engineering, Environmental
Ehsan Bouteh, Navid Ahmadi, Mona Abbasi, Ali Torabian, Mark C. M. van Loosdrecht, Joel Ducoste
Summary: The performance of a lab-scale moving bed biofilm reactor for general bioconversion processes and biotransformation of organophosphorus pesticides was investigated. Decrease in organic load resulted in thinner biofilm and more biomass, shifting bioconversion processes. The reactor supported more nitrification at low organic loading, but denitrification was enhanced at higher organic loading.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Biotechnology & Applied Microbiology
Maolin Yang, Peitao Zhao, Xin Cui, Fan Geng, Qingjie Guo
Summary: This research investigated the real-time chlorine transformation characteristics and release kinetics during the hydrothermal dechlorination (HTD) of PVC, providing insights into the factors influencing chlorine removal efficiency. The study also proposed powerful solutions for removing chlorine effectively from chlorinated organic wastes.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Analytical
Gaoqiong Deng, Hengye Chen, Qiong Shi, Lixue Ren, Ke Liang, Wanjun Long, Wei Lan, Xiaole Han, Yuanbin She, Haiyan Fu
Summary: A simple and sensitive colorimetric assay using TMB/H2O2/DTAB-ZnTPyP system has been developed for detecting organophosphorus pesticides. The assay shows low detection limits, wide linear ranges, and successful application in various complex samples for organophosphorus pesticide detection.
Article
Engineering, Chemical
Wei Luo, Lin Deng, Jun Hu, Bohui Xu, Chaoqun Tan
Summary: This study investigated the degradation of DMZ and the formation of HNMs during the UV/chlorine process. The results showed that UV/chlorine process can efficiently degrade DMZ, but the formation of HNMs should be considered.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Yuanyuan Yu, Xiaolong Yu, Dongqing Zhang, Ling Jin, Jiahui Huang, Xifen Zhu, Jianteng Sun, Miao Yu, Lizhong Zhu
Summary: The biotransformation behavior and toxicity of organophosphate esters (OPEs) in rice and rhizosphere microbiomes were studied. New metabolites were identified in rice and rhizosphere microbiomes. The interaction between rhizobacteria and plants played a role in OPE elimination. The metabolites perturbed key metabolic pathways in rice plants and Escherichia coli.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Xin Luo, Zhen Luo, Xiaoqian Wei, Lei Jiao, Qie Fang, Hengjia Wang, Jinhua Wang, Wenling Gu, Liuyong Hu, Chengzhou Zhu
Summary: A novel template-sacrificed strategy was reported for the synthesis of atomically dispersed Ir SASCs, which were successfully utilized for electrochemical sensing of organophosphorus pesticides with high sensitivity and selectivity. This work demonstrates the broad application prospect of ORR in sensitive detection of biomolecules.
ANALYTICAL CHEMISTRY
(2022)
Review
Environmental Sciences
K. O. Iwuozor, E. C. Emenike, F. A. Gbadamosi, J. O. Ighalo, G. C. Umenweke, F. U. Iwuchukwu, C. O. Nwakire, C. A. Igwegbe
Summary: This paper reviews the removal of organophosphate pesticides (OPPs) from aqueous media via adsorption. The highest reported adsorption capacity for OPPs is found for chlorpyrifos using mesoporous MgFe2O4 adsorbent. The dominant adsorption mechanisms include hydrogen bonding, complexation reactions, electrostatic interactions, and electron donor-acceptor interactions. The Langmuir or Freundlich classical isotherm models are the best-fit for describing OPPs' adsorption equilibrium in most cases, while the pseudo-second-order model is the best-fit for modeling OPPs' uptake kinetics. Thermodynamic studies reveal that OPPs' uptake is usually spontaneous. Competitive adsorption studies show that the uptake capacity of OPPs decreases in the presence of negatively charged ions and anions. Most OPPs exhibit a removal efficiency > 70% even after five regeneration cycles.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Analytical
David Bahamon-Pinzon, Geisianny Moreira, Sherine Obare, Diana Vanegas
Summary: Organophosphorus pesticides are commonly used in industrial agriculture and can lead to water pollution and negative effects on ecosystems and communities. A facile electrochemical sensor has been developed for detecting these pesticide residues in water sources, especially in developing countries where standard laboratory methods are expensive. The sensor showed high sensitivity and a promising potential for environmental monitoring of organophosphorus pesticide residues.
Article
Environmental Sciences
Luning Lian, Bo Jiang, Yi Xing, Nana Zhang
Summary: This study found that photolysis can effectively degrade organophosphorus pesticides (OPs), with chlorpyrifos and dimethoate achieving high photodegradation efficiencies under specific conditions (pH 9, xenon lamp as light source). Through experimental and theoretical exploration, the photodegradation mechanisms of chlorpyrifos and dimethoate were revealed.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Engineering, Environmental
Hongye Yan, Yifeng Chen, Hengjia Wang, Lei Jiao, Hongxiang Chen, Chengzhou Zhu
Summary: Monitoring acetylcholinesterase activity and its organophosphorus inhibitor is crucial for ecological health and food safety. This study proposes a high-performance gold nanozyme and develops a simple and reliable colorimetric sensing platform for evaluating acetylcholinesterase activity and detecting organophosphorus inhibitors.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Ao Wang, Shouliang Huo, Jean-Philippe Croue, Chao Liu
Summary: In this study, the kinetics and mechanisms of the reactions between chlorine dioxide (ClO2) and PA membrane model monomers, namely benzanilide (BA) and acetanilide (AC), were investigated. The reactions were found to be base assisted and exhibited a significant pH dependence. The activation energies for the degradation of BA and AC by ClO2 were determined, indicating a strong temperature dependence. The presence of bromide and natural organic matter did not promote the degradation of the model monomers by ClO2.
Article
Chemistry, Multidisciplinary
Haoyue Song, Meng Cai, Zhengyi Fu, Zhaoyong Zou
Summary: In this study, the influence of fluoride on the formation and stability of amorphous calcium phosphate (ACP) nanospheres was investigated. It was found that fluoride had little effect on the formation and particle size of ACP nanospheres, but increased the stability of ACP. Aggregation of ACP nanospheres and nucleation of crystalline phases were important steps during ACP crystallization, which were retarded in the presence of fluoride. Fluoride also promoted the formation of rod-like crystals on the surface of ACP nanospheres.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Engineering, Environmental
Rui Pang, Nan Li, Zhihao Hou, Junjie Huang, Cuixia Yue, Yongxin Cai, Jinxi Song
Summary: This research investigated the oxidation of sulfonamides (SAs) by chlorine dioxide (ClO2) and found that ClO2 has the potential to serve as a chemical oxidant for removing sulfonamides in practical water treatment conditions.
CHEMICAL ENGINEERING JOURNAL
(2023)
