Article
Environmental Sciences
Xiaoping Liao, Caixiang Zhang, Chao Nan, You Lv, Zenghui Fan, Lisong Hu
Summary: The research suggests a new mechanism for enhanced removal of methyl parathion in mixtures of MnO2 and phenol, showing significantly higher removal efficiency compared to MnO2 alone. The adsorption of methyl parathion was found to be influenced by pH, reactant loading, and metal ion co-solutes in the system.
Article
Environmental Sciences
Jianwei Wang, Weifeng Yue, Yanguo Teng, Yuanzheng Zhai, Hanhua Zhu
Summary: The study demonstrates that the reaction system using 8-MnO2 and oxalic acid can efficiently degrade methyl parathion. The removal rate of methyl parathion reached 67.83% under optimized conditions. This study provides a scientific basis for the degradation of organophosphorus pesticides using MnO2 and an organic acid.
Article
Engineering, Environmental
Shule Duan, Huiyu Dong, Pin Hou, Zhimin Qiang
Summary: This study investigated the yield, kinetics, stoichiometry, and abatement of trace organic contaminants (TrOC) by the permanganate/bisulfite (MS) and permanganate/manganous (MM) processes. The results showed that the TrOC abatement rate in the MS process was significantly higher than that in the MM process, despite the higher rate constant of Mn(III) generation in the former. The contribution of Mn(III) to TrOC abatement was limited in both processes.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Yanchen Sun, Chao Wang, Amanda L. May, Gao Chen, Yongchao Yin, Yongchao Xie, Ashley M. Lato, Jeongdae Im, Frank E. Loffler
Summary: Bisphenol A (BPA) can be effectively degraded by both Mn(III) and Mn(IV), with synthetic MnO2 containing surface-associated Mn(III) showing higher reactivity in BPA degradation. Mn(III)-mediated BPA degradation results in different transformation intermediates and products compared to MnO2-mediated degradation. These findings suggest the potential for engineering more reactive oxidized Mn species for BPA removal.
Article
Engineering, Environmental
Erdan Hu, Wenzhong Zhang, Jun Wu, Hefa Cheng
Summary: In this study, the rapid transformation of chlorobenzenes by soluble Mn(III) in the permanganate/bisulfite process was reported. The removal of chlorobenzenes was highly efficient, especially for those with fewer chlorine atoms. Mn(III) was found to act as a strong electrophilic reagent in the degradation of chlorobenzenes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Shuchang Wang, Jie Chen, Yuankui Sun, Bo Sun, Junlian Qiao, Xiaohong Guan
Summary: This study investigates the role of MnO2 colloids and Mn(III) in the oxidation process of Mn(VII) with organic pollutants. The results show that the oxidation of phenolic contaminants by Mn(VII) exhibits an autoaccelerating trend, which is attributed to the oxidation of the organics by MnO2 colloids. The influence of pyrophosphate suggests that Mn(III) is also responsible for the autoaccelerating oxidation under specific conditions. The overall contribution of MnO2 colloids and Mn(III) ranges from 6.6% to 67.9% during the oxidation process.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Dustin R. R. Rubenstein, Joseph Solomon
Summary: The study of DNA methylation has gained increasing interest in understanding traits or diseases, which requires new approaches for quantifying DNA methylation in diverse organisms. TEEM-Seq is a method that combines enzymatic methyl sequencing with a custom-designed hybridization capture bait set, allowing efficient quantification of DNA methylation states in species with a reference genome. It has shown similar performance to traditional methods and can be easily incorporated into existing workflows, making it a valuable tool for studying DNA methylation. With its cost-effectiveness and flexibility, TEEM-Seq has the potential to replace traditional approaches and be used in conjunction with other sequencing methods to increase sample sizes.
Article
Environmental Sciences
Jujiao Zhao, Ruihan Liao, Quanfeng Wang, Yixuan Chen, Wenbo Liu, Bo Shang, Jun Zhai
Summary: Recent studies have shown that Mn(III) does not play a critical role in the oxidation of the refractory pharmaceutical carbamazepine (CBZ) by various structures of MnO2. The oxidative reactivity of MnO2 towards CBZ follows the order: delta-MnO2 > alpha-MnO2 ≈ gamma-MnO2 > beta-MnO2. It is suggested that a new surface reaction dominated mechanism is responsible for the oxidation of CBZ by MnO2, rather than the previously believed role of Mn(III).
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Microbiology
Jing Xu, Bo Wang, Ming-Qing Wang, Jian-Jie Gao, Zhen-Jun Li, Yong-Sheng Tian, Ri-He Peng, Quan-Hong Yao
Summary: Organophosphate compounds are commonly used in pesticides, but they are toxic to living organisms. In this study, a genetically modified Escherichia coli strain was created to degrade methyl parathion, providing a potential candidate for bioremediation.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Environmental Sciences
Tianyi Chen, Haoze Chen, Anli Wang, Weixuan Yao, Zhongshi Xu, Binjie Wang, Jiye Wang, Yuanzhao Wu
Summary: Methyl parathion (MP), an organophosphorus pesticide, has been widely used for food preservation and pest management, resulting in its accumulation in the aquatic environment. This study investigated the developmental toxicity of MP to zebrafish embryos. The results showed that MP exposure adversely affected the movement, hatching, survival, and cardiac development of the embryos, as well as inducing oxidative stress and apoptosis. Astaxanthin was found to rescue the heart defects induced by MP exposure. These findings provide evidence of MP toxicity to aquatic organisms.
Article
Spectroscopy
Bicheng Liu, Liangming Wu, Zoujun Peng, Sihao Wu, Ping Qiu
Summary: A colorimetric assay using gold nanoparticles and acetylcholinesterase was designed to measure parathion-methyl concentration in lake water samples. The method involved a visual color change to indicate the presence of the analyte, and UV-Vis spectroscopy was used to calculate the concentration. A smartphone app was employed to convert color information from solution photos into digital values.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Analytical
Wenfei Guo, Changchun Hu, Shuo Li, Dan Wei, Jie Zhou, Xueying Liu, Hui Chen, Song Li, Yan Deng
Summary: An aptamer-based electrochemical sensor was developed for detecting methyl parathion (MP). The MP aptamer (MPapta-6) with high affinity for MP was obtained using the modified magnetic beads-systematic evolution of ligands by enrichment (MB-SELEX). The constructed sensor showed a linear range of 1-105 pM with a low detection limit (LOD) of 0.49 pM. The sensor was successfully applied to detect MP in water samples with a recovery rate of 96.6%-103.5%.
ANALYTICA CHIMICA ACTA
(2023)
Article
Engineering, Environmental
Zheng-Yu Dong, Yi-Li Lin, Tian -Yang Zhang, Chen-Yan Hu, Yang Pan, Renjie Pan, Yu-Lin Tang, Bin Xu, Nai-Yun Gao
Summary: In this study, a Mn(VII)-Fe(III)/PMS process was proposed to improve the performance of the conventional coagulation process. It was found that this process can effectively remove dissolved organic carbon, turbidity, and micropollutants. The formation potential of disinfection by-products was also reduced. The reaction mechanism of this process was elucidated.
Article
Environmental Sciences
Xiaoping Liao, Jinru Cao, Ying Hu, Caixiang Zhang, Lisong Hu
Summary: Unactivated PMS can rapidly degrade methyl parathion through direct reaction rather than electrophile radical-based oxidation, with the contribution of produced singlet oxygen being negligible. The degradation rate constant is strongly dependent on PMS loading and solution pH.
Article
Engineering, Environmental
Dinh Viet Cuong, Po-Chang Wu, Lo-I Chen, Chia-Hung Hou
Summary: An active MnO2/rice husk biochar composite (MBC) with improved porous structure was prepared for enhanced removal of As(III) in groundwater. MBC exhibited a high removal capacity for As(III) and a powerful transformation capability of As(III), with pH influencing its removal efficiency. MnO2 and the BC substrate played important roles in the effective removal of arsenic by MBC.
Article
Engineering, Environmental
Shun-Shun Chen, Xu-Xiu Chen, Tian-Yu Yang, Li Chen, Zheng Guo, Xing-Jiu Huang
Summary: A temperature-modulated sensing strategy was proposed to identify and determine BTEX compounds. Highly effective identification of BTEX was achieved using linear discrimination and convolutional neural network analyses. Additionally, quantitative analysis of concentration was accomplished by establishing the relationship between concentration and response.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Myungkyung Noh, Jeong Yeon Sim, Jisung Kim, Jee Hwan Ahn, Hye-Young Min, Jong-Uk Lee, Jong-Sook Park, Ji Yun Jeong, Jae Young Lee, Shin Yup Lee, Hyo-Jong Lee, Choon-Sik Park, Ho-Young Lee
Summary: This study reveals that chronic exposure to PM induces chronic inflammation and development of COPD by dysregulating NAD+ metabolism and subsequent SIRT1 deficiency in pulmonary macrophages. Activation of SIRT1 by resveratrol effectively mitigates PM-induced inflammation and COPD development. Targeting metabolic and epigenetic reprogramming in macrophages induced by PM is a promising strategy for COPD treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yu Liu, Linlin Qin, Yiming Qin, Tong Yang, Haoran Lu, Yulong Liu, Qiqi Zhang, Wenyan Liang
Summary: Co/NC/PAC electrode was prepared by compounding ZIF-67 with powder-activated carbon for the electrocatalytic treatment of nitrogen-containing heterocyclic compounds. The degradation efficiency of the four compounds reached 90.2-93.7% under optimal conditions, and the degradation order was pyridazine < pyrimidine < pyrazine < pyridine.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Julien Couturier, Pierre Tamba Oulare, Blanche Collin, Claire Lallemand, Isabelle Kieffer, Julien Longerey, Perrine Chaurand, Jerome Rose, Daniel Borschneck, Bernard Angeletti, Steven Criquet, Renaud Podor, Hamed Pourkhorsandi, Guilhem Arrachart, Clement Levard
Summary: This study analyzes the properties of bauxite residue samples and explores the influence of bauxite ore origin, storage conditions, and storage time. The results show that the speciation of yttrium is related to the origin of bauxite ore, while no significant variation was observed with storage conditions or aging of the residues.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Sakthinarenderan Saikumar, Ravi Mani, Mirunalini Ganesan, Inbakandan Dhinakarasamy, Thavamani Palanisami, Dharani Gopal
Summary: Microplastic contamination in marine ecosystems poses a growing concern due to its trophic transfer and negative effects on marine organisms. This study investigates the transfer and impacts of polystyrene microplastics in an estuarine food chain. The results show that microplastics can be transferred through the food chain, although the transfer rates are low. The exposed organisms exhibit stress responses, suggesting the potential risk of microplastics reaching humans through the food chain.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Review
Engineering, Environmental
Yan-Jiao Li, Ying Yuan, Wen-Bing Tan, Bei-Dou Xi, Hui Wang, Kun-Long Hui, Jia-Bao Chen, Yi-Fan Zhang, Lian-Feng Wang, Ren-Fei Li
Summary: This review investigated and analyzed the distribution, composition, and abundance of heavy metals and antibiotic resistance genes (ARGs) in landfill. The results showed that heavy metals have lasting effects on ARGs, and complexes of heavy metals and organic matter are common in landfill. This study provides a new basis to better understand the horizontal gene transfer (HGT) of ARGs in landfill.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Jessy Joseph, Ari Vaisanen, Ajay B. Patil, Manu Lahtinen
Summary: Efficient and environmentally friendly porous hybrid adsorbent beads have been developed for the removal of arsenic from drinking water. The structural tuning of the adsorbents has been shown to have a significant impact on their adsorption performance, with high crystallinity leading to increased adsorption capacity and selectivity towards As5+.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yangyang Liu, Minhua Xiao, Kaiqin Huang, Juntao Cui, Hongli Liu, Yingxin Yu, Shengtao Ma, Xihong Liu, Meiqing Lin
Summary: This study measured the levels of phthalate metabolites in breast milk collected from mothers in southern China. The results showed that phthalates are still prevalent in the region, and breastfeeding contributes to phthalate intake in infants. However, the levels detected do not pose significant health risks to infants based on dietary exposure. The increasing exposure to certain phthalates calls for further research into their sources and potential risks.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhiqiang Wu, Jianxing Sun, Liting Xu, Hongbo Zhou, Haina Cheng, Zhu Chen, Yuguang Wang, Jichao Yang
Summary: Ocean depth affects microbial diversity, composition, and co-occurrence patterns of microplastic microbial communities. Deterministic processes dominate the assembly of mesopelagic plastisphere microbial communities, while stochastic processes shape the assembly of bathypelagic microbial communities. The relationships between microorganisms in the mesopelagic layer are more complex and stable, with Proteobacteria and Actinobacteriota playing important roles.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Tingting Xiao, Renjie Chen, Chen Cai, Shijie Yuan, Xiaohu Dai, Bin Dong, Zuxin Xu
Summary: Based on the efficiency of catalytic ozonation techniques in enhancing sludge dewaterability, this study investigated its effectiveness in simultaneous reduction of antibiotics and antibiotic resistance genes. The results showed that catalytic ozonation conditioning changed the distribution of antibiotics and achieved high degradation rates. It also significantly reduced the abundance of ARGs, inhibited horizontal gene transfer, and decreased the signal transduction of typical ARGs host bacteria.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yang Deng, Xiaohong Guan
Summary: This article discusses two different development approaches for ferrate(VI) technology in water treatment, arguing that process integration is a promising method that can drive technological innovation and revolution in water treatment, achieving higher treatment efficiency, reduced costs and energy consumption, and a smaller physical footprint.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhe Zhang, Lu Zhang, Zhihao Huang, Yuxin Xu, Qingqing Zhao, Hongju Wang, Meiqing Shi, Xiangnan Li, Kai Jiang, Dapeng Wu
Summary: In this study, a floating catalytic foam was designed and prepared to enhance the mass transfer in immobilized photocatalysts for wastewater treatment. The floating catalytic foam could float on the water surface and establish a temperature gradient, effectively promoting the diffusion and adsorption of target molecules during the photocatalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Muhammad Nafees, Adiba Khan Sehrish, Sarah Owdah Alomrani, Linlin Qiu, Aasim Saeed, Shoaib Ahmad, Shafaqat Ali, Hongyan Guo
Summary: The accumulation of cadmium and antibiotics in edible plants and fertile soil is a worldwide problem. This study investigated the potential of zinc oxide nanoparticles to alleviate the toxicity of both cadmium and antibiotics and promote spinach growth.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Lurui Wan, Kai Wang, Yuan Chen, Zhiyong Xu, Wenbo Zhao
Summary: In this study, a low viscosity and high thermal stability SO2 absorbent with dual interacting sites was successfully synthesized. The absorbent showed the highest absorption enthalpy change and entropy change values among reported SO2 absorbents, and exhibited lower viscosity and comparable thermal stability to ILs.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhengwei Zhou, Guojie Ye, Yang Zong, Zhenyu Zhao, Deli Wu
Summary: This study utilized Mo powder and STPP to enhance the performance of the sodium percarbonate system in pollutant degradation. The presence of Mo and STPP resulted in a higher degradation rate of the model pollutant SMX, with low oxidant consumption. The system generated multiple active species through a series of chain reactions at different pH values, exhibiting excellent performance towards electron-rich pollutants. Furthermore, Mo demonstrated excellent stability and reusability.
JOURNAL OF HAZARDOUS MATERIALS
(2024)