Article
Chemistry, Physical
Emmanuel M. de la Fourniere, Jorge M. Meichtry, Eduardo A. Gautier, Ana G. Leyva, Marta Litter
Summary: The degradation mechanism of ethylmercury chloride under UV/TiO2 photocatalysis was investigated, revealing the products and degradation pathways, and proposing a mechanism involving oxidative and reductive one-electron transfer steps.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Fan Li, Chun-Lai Wang, Sheng Ding, Kun Yang, Chang-Jun Liu, Feng Tian
Summary: In this study, carbon dots (CDs) or nanocomposites of CDs and TiO2 were used to decorate titanium dioxide nanotube arrays (TiO2NTs) by solvothermal method. The decorated TiO2NTs showed enhanced photocurrent under visible light, with CDs-TiO2NTs-0 showing the highest photocurrent density. Photodegradation measurements revealed that CDs-TiO2 decorated TiO2NTs exhibited superior photocatalytic activity under both UV and visible light illumination.
Article
Chemistry, Physical
Alejandra Romero-Moran, Jose L. Sanchez-Salas, Joel Molina-Reyes
Summary: The study established the influence of the crystalline phase and agglomeration degree of TiO2 nanoparticles on photocatalytic hydroxyl radical formation and bacterial inactivation in TiO2/SiO2 composite coatings. A relationship between hydroxyl radicals' formation and charge carrier transfer mechanism between defect levels in SiO2 and TiO2 embedded nanoparticles was established through a simple spectroscopic method. This correlation complements the lack of mechanisms behind the photocatalytic activity in TiO2/SiO2 composites.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Patrick Enders, Katrina Prane, Eric Schoenke, Tobias Taeufer, Dirk Michalik, Jabor Rabeah, Robert Francke
Summary: A photochemical rearrangement of O-aryl thiocarbamates to S-aryl compounds via heterogeneous electron transfer with photo-excited titanium dioxide is described. This rearrangement is crucial in the conversion of phenols to thiophenols. The reaction can be conducted at room temperature under aerobic conditions using violet LEDs, resulting in yields up to 99% for 24 electron-rich substrates. A plausible mechanism is proposed based on substrate scope, spectroscopic studies, and control experiments.
Article
Environmental Sciences
Sojeong Lee, Jongkwan Park
Summary: This study characterized the molecular structure of natural organic matter (NOM) and investigated the characteristics of NOM from different sources. The results showed that NOM from wetlands had a larger molecular size and the effluent sample had the highest proportion of protein-like peaks. The study also identified lignin as a major component in NOM from wetlands.
Article
Environmental Sciences
Yan-Ting Zuo, Shi Cheng, Hao-Han Jiang, Yu-Ze Han, Wen-Xiang Ji, Zheng Wang, Qing Zhou, Ai-Min Li, Wen-Tao Li
Summary: This study investigated the release and treatability of algae-derived organic matter (AOM) during water treatments. It was found that humic substances can protect algal cell membrane during prechlorination, and the variation of humic-like fluorescence can indicate the chlorine dose. Prechlorination released low molecular weight fractions and fluorescent nitrogenous biopterins. Physically extracted AOM cannot represent the released organic matter during prechlorination. Coagulation was more affected by humic substances than AOM released during prechlorination, and high molecular weight biopolymers and humic substances can be removed effectively. Low molecular weight fractions released by prechlorination can also be effectively removed, while other fractions were recalcitrant to coagulation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Luis A. Gonzalez-Burciaga, Cynthia M. Nunez-Nunez, Jose B. Proal-Najera
Summary: The study summarized the method of degrading cytostatic pollutants through TiO2 heterogeneous photocatalysis and its application scope, as well as outlined and discussed the removal of cytostatic drugs in wastewater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Waris Khan, Ji Won Park, Sung Kyu Maeng
Summary: This study investigated the effects of ultrasonication power on microalgae disintegration and the release of algal organic matter, utilizing advanced organic matter characterization tools. The results showed that tryptophan-like, tyrosine-like, and humic-like substances had significant correlation with changes in algal organic matter, and increased with the power of ultrasonication. The study presents a novel approach to spectroscopic descriptors for real-time tracking of microalgae disintegration and the release of algal organic matter during ultrasonication.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Biochemistry & Molecular Biology
Mairis Iesalnieks, Raivis Eglitis, Talis Juhna, Krisjanis Smits, Andris Sutka
Summary: This study successfully prepared a transparent titanium dioxide coating on plastic substrates and demonstrated its high performance in photocatalytic degradation of organic pollutants. The coating can be applied to polymer substrates and exhibits good stability.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Polymer Science
Pieter-Jan Voorter, Manfred Wagner, Christine Rosenauer, Jinhuo Dai, Priya Subramanian, Alasdair Mckay, Neil R. Cameron, Jasper J. Michels, Tanja Junkers
Summary: Diffusion-ordered NMR spectroscopy (DOSY) is a solvent-independent method for molecular weight calibration with low lab variability. It has been used for data calibration in different solvents and confirmed the inter-laboratory and inter-polymer consistency. It can also determine the molecular weight of polymers with added complexity.
Article
Environmental Sciences
Zhenqi Du, Ruibao Jia, Wuchang Song, Yonglei Wang, Mengyu Zhang, Zhangbin Pan, Shaohua Sun
Summary: Seasonal cyanobacterial blooms in eutrophic water release algal organic matter (AOM), containing dissolved organic nitrogen (DON), which is difficult to remove effectively by conventional treatment processes due to its hydrophilicity. UV/H2O2/O3 is effective in degrading algal-derived NDMA precursors, with removal rates affected by UV doses and environmental conditions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Analytical
Markus Matz, Carlo Botha, Timo Beskers, Manfred Wilhelm
Summary: Methods to increase sensitivity are important in research. In this study, a continuous injection method with a sinusoidal analyte concentration profile was developed to enhance sensitivity in HPLC. The proposed method was established and evaluated for SEC, and the phase angle shift was utilized for molecular weight determination.
Article
Environmental Sciences
Barbara Maria Borges Ribeiro, Renato Carajelescov Nonato, Tania Miyoko Fujimoto, Bianca Gvozdenovic Medina Bricio, Ursula Luana Rochetto Doubek, Edson Tomaz
Summary: This study focused on achieving high toluene degradation using heterogeneous photocatalysis in the presence of ozone, and found that ozone concentration influenced VOC degradation. It was observed that toluene degradation reached a plateau over the reactor length, indicating oversized reactor in some cases, while ozone concentration and toluene reaction rate decreased over the reactor length.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Minh Nhat Nguyen, Ruben Hervas-Martinez, Andrea Iris Schafer
Summary: The study demonstrates that tailoring composite membranes by carefully choosing ultrafiltration molecular weight cutoff can prevent interference of water matrix compounds in micropollutant adsorption by permeate-side adsorbents.
Article
Chemistry, Multidisciplinary
Min Huang, Shuyi Zhang, Bo Wu, Xing Yu, Yongping Gan, Tiejun Lin, Fei Yu, Yuhan Sun, Liangshu Zhong
Summary: A tunable band structure W-doped TiO2 photocatalyst was designed for the photocatalytic oxidation of methane to C-1 oxygenates using O-2 at low temperature. The W-doping improved the photocatalytic performance, achieving a liquid oxygenates productivity of 12.2 mmol g(-1) and a selectivity of 99.4%. Additionally, the selectivity of COx was effectively decreased from 21.2% to 0.6%. W-doping not only enhanced light absorption but also promoted the separation of photo-generated carriers, improving methane conversion.
Article
Engineering, Environmental
Jorge Velasquez, Sergio Valencia, Luis Rios, Gloria Restrepo, Juan Marin
CHEMICAL ENGINEERING JOURNAL
(2012)
Article
Chemistry, Physical
Ximena Vargas, Elias Tauchert, Juan-Miguel Marin, Gloria Restrepo, Ralf Dillert, Detlef Bahnemann
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2012)
Article
Chemistry, Physical
Sergio Valencia, Ximena Vargas, Luis Rios, Gloria Restrepo, Juan M. Marin
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2013)
Article
Environmental Sciences
Sergio Valencia, Juan M. Marin, Gloria Restrepo, Fritz H. Frimmel
SCIENCE OF THE TOTAL ENVIRONMENT
(2013)
Article
Engineering, Environmental
Sergio Valencia, Juan M. Marin, Gloria Restrepo, Fritz H. Frimrnel
Article
Engineering, Environmental
Sergio Valencia, Juan M. Marin, Gloria Restrepo, Fritz H. Frimmel
Article
Engineering, Environmental
Ximena Maria Vargas Ramirez, Gina Maria Hincapie Mejia, Kelly Viviana Patino Lopez, Gloria Restrepo Vasquez, Juan Miguel Marin Sepulveda
WATER SCIENCE AND TECHNOLOGY
(2012)
Article
Engineering, Environmental
S. Valencia, J. Marin, G. Restrepo
WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY
(2013)
Article
Engineering, Electrical & Electronic
Laila Galeano, Sergio Valencia, Gloria Restrepo, Juan M. Marin
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2019)
Article
Materials Science, Multidisciplinary
Laila Galeano, Sergio Valencia, Juan Miguel Marin, Gloria Restrepo, Jose A. Navio, Maria C. Hidalgo
MATERIALS RESEARCH EXPRESS
(2019)
Article
Engineering, Environmental
Sergio Valencia, Juan Marin, Gloria Restrepo
ENVIRONMENTAL ENGINEERING SCIENCE
(2018)
Article
Engineering, Chemical
X. M. Vargas, J. M. Marin, G. Restrepo
LATIN AMERICAN APPLIED RESEARCH
(2016)
Article
Chemistry, Physical
Ximena Maria Vargas, Juan Miguel Marin, Gloria Restrepo
JOURNAL OF ADVANCED OXIDATION TECHNOLOGIES
(2015)
Article
Engineering, Chemical
F. A. Catano, S. H. Valencia, E. A. Hincapie, G. M. Restrepo, J. M. Marin
LATIN AMERICAN APPLIED RESEARCH
(2012)
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)
