Review
Engineering, Environmental
Jingkai Lin, Wenjie Tian, Huayang Zhang, Xiaoguang Duan, Hongqi Sun, Hao Wang, Yanfen Fang, Yingping Huang, Shaobin Wang
Summary: This article summarizes the application of metal-free graphitic carbon nitride (g-C3N4) based direct and indirect Z-scheme photocatalysts in solar-driven advanced oxidation processes (AOPs) for the removal of organic pollutants from water. The classification of AOPs, definition and validation of Z-schemes are discussed, followed by an examination of the engineering strategies for CN-based direct Z-scheme structure and the design of indirect CN-based Z-scheme systems using different charge mediators. The relationship between Z-scheme structure and activity is studied to gain insights into improving the catalytic performance of CN-based Z-schemes in AOPs.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Review
Engineering, Environmental
Xiu-wei Ao, Jussi Eloranta, Ching-Hua Huang, Domenico Santoro, Wen-jun Sun, Ze-dong Lu, Chen Li
Summary: This review provides a comprehensive analysis of scientific information and experimental data on the applications of PAA-based AOPs for the removal of chemical and microbiological micropollutants from water and wastewater. Various methods of PAA activation and degradation mechanisms are discussed, along with the application of PAA for water disinfection and related mechanisms of microorganism inactivation. The review also focuses on the advantages and disadvantages of UV/PAA as an AOP compared to UV/H2O2, highlighting knowledge gaps, challenges, and new opportunities for research in this field.
Article
Environmental Sciences
Lakshmi Pisharody, Ashitha Gopinath, Milan Malhotra, P. Nidheesh, M. Suresh Kumar
Summary: Landfilling is a common method for managing municipal solid waste globally, but leachate generation poses environmental issues. Advanced oxidation processes (AOPs) show potential in removing micropollutants from landfill leachate, but further research is needed for better understanding.
Article
Green & Sustainable Science & Technology
Thiago Lopes da Silva, Camila Stefanne Dias Costa, Meuris Gurgel Carlos da Silva, Melissa Gurgel Adeodato Vieira
Summary: This article provides detailed information about the properties of anti-inflammatory drugs found in water and effluents, the latest results on the concentration of these compounds in different aquatic environments, the main characteristics of AOP, and the recent achievements in oxidation processes aimed at degrading NSAIDs.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Engineering, Environmental
Wei Liu, Yanrong Lu, Yingbo Dong, Qi Jin, Hai Lin
Summary: This review comprehensively presents the research progress on the formation of reactive species (RS), quenching experiments, reaction kinetics, and influencing factors in advanced oxidation processes (AOPs). It also discusses the challenges in the process of RS formation, transformation, identification, and suggests methods to reveal the catalytic degradation mechanism. The review is helpful for researchers to understand the quenching process of RS in AOPs and clarify the degradation mechanism of different organic pollutants.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Biochemistry & Molecular Biology
Christian Schoneich
Summary: This article summarizes recent analytical and mechanistic work on the reactions of therapeutic proteins under light exposure, particularly in relation to protein modification under visible light. It suggests that these processes may be triggered by a ligand to metal charge transfer in excipient-metal complexes.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Review
Engineering, Environmental
Santiago Correa-Sanchez, Gustavo A. Penuela
Summary: An increasing number of emerging pollutants (EPs) have raised concerns due to their potential risks in the environment, and peracetic acid (PAA) based advanced oxidation processes (AOPs) have emerged as a promising alternative. This study critically analyzes the advantages, disadvantages, and opportunities of PAA-based processes, and suggests key perspectives for further research.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Review
Engineering, Environmental
Xin Lei, Yu Lei, Xinran Zhang, Xin Yang
Summary: This review focuses on the degradation kinetics and mechanisms of disinfection byproducts (DBPs) under UV and solar irradiation and in UV-based advanced oxidation processes (AOPs). The study highlights the differences in photodegradation rates of N-nitrosamines and halogenated DBPs, and the potential predictors of photodegradation rates under low pressure UV irradiation. Additionally, the review summarizes the reaction mechanisms under UV irradiation and in HO center dot-mediated oxidation, providing insights into the degradation pathways of various DBPs.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Babatunde A. Koiki, Charles Muzenda, Kehinde D. Jayeola, Minghua Zhou, Frank Marken, Omotayo A. Arotiba
Summary: This article introduces a simple and clean method for the production of sulfate radicals for water treatment, namely electrochemical and photoelectrochemical activation techniques. The photoelectrochemical activation method shows great potential as it effectively treats various pollutants by using highly reactive oxidizing species. The article provides a detailed account of the applications of sulfate radical enhanced photoelectrochemical treatments for water contaminated with organics.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Review
Biochemistry & Molecular Biology
Belma Imamovic, Polonca Trebse, Elma Omeragic, Ervina Becic, Andrej Pecet, Mirza Dedic
Summary: This review examines the presence and hazards of benzophenone-type UV filters in the environment and discusses their degradation kinetics and mechanisms under UV irradiation. It also explores the applications of UV-based advanced oxidation processes and nanoparticle photocatalysis for the degradation of these UV filters.
Review
Chemistry, Multidisciplinary
Yanan Shang, Xing Xu, Baoyu Gao, Shaobin Wang, Xiaoguang Duan
Summary: Carbon-based single atom catalysts show high performances and efficiency in environmental catalysis, but there is a lack of comprehensive research on their catalytic sites and mechanisms in advanced oxidation processes, which is necessary for further exploration.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Chelsea M. Schroeder, Taylor M. Koehler, Kristiane K. Ohlhorst, Nicholas E. Leadbeater
Summary: An apparatus using UV-visible spectrophotometry was used to monitor electrochemical processes in real-time. This study focused on optimizing the electrochemical activation of persulfate for the decolorization of Acid Orange 7 dye. The research investigated the effects of electrode composition, current density, persulfate loading, and stirring speed on the decolorization rate. It was found that the core structure and functional groups of the dye significantly influenced the decolorization rate, and electrochemically-activated persulfate showed faster decolorization than anodic oxidation, particularly for electron-deficient substrates.
Article
Engineering, Environmental
Xinzhi Wang, Zhenguo Chen, Yutian He, Xiaohui Yi, Chao Zhang, Qiao Zhou, Xuezhu Xiang, Yunan Gao, Mingzhi Huang
Summary: 1T-MoS2 was synthesized and proposed as a new catalyst for the degradation of IMI. The study found that 1T-MoS2 exhibited better catalytic performance and identified the reactive oxygen species as well as the degradation pathways of IMI.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Chenhao Gong, Junxing Han, Can He, Li Shi, Yue Shan, Zhongguo Zhang, Liangliang Wang, Xiaojing Ren
Summary: A novel active Ce-doped Ti4O7 electrode (Ti/Ti4O7-Ce) was prepared and used for improving the degradation efficiency of refractory pollutants in Electrochemical Advanced Oxidation Processes (EAOPs). The addition of Ce significantly impacted the generation rate of center dot OH radicals and electrode stability. The Ti/Ti4O7-Ce electrode showed efficient oxidation capacity for the pharmaceutical pollutant atenolol (ATL) in EAOPs. The degradation efficiency of ATL was influenced by operational conditions, with higher efficiency observed at lower pH values.
ENVIRONMENTAL RESEARCH
(2023)
Review
Chemistry, Physical
Soliu Oladejo Ganiyu, Carlos A. Martinez-Huitle, Mehmet A. Oturan
Summary: The knowledge of electrochemical advanced oxidation processes (EAOPs) mechanisms has evolved over the past three decades, aided by advances in analytical and spectrometric techniques. The type, nature, and quantity of reactive species generated in EAOPs are controlled by various factors, and their accurate identification is crucial for understanding their reactivity. The potency and reactivity of oxidants generated in EAOPs are similar regardless of the technique used, except in the case of heterogeneous and homogeneous hydroxyl radicals.
CURRENT OPINION IN ELECTROCHEMISTRY
(2021)
Article
Chemistry, Physical
A. Khallouqi, A. Halimi, O. El Rhazouani
Summary: A pediatric head phantom made of epoxy resin was used to evaluate radiation exposure in CT scans. The phantom demonstrated dosimetric properties comparable to commercially available phantoms, making it a practical and economical option for assessing radiation dose in children.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
M. Y. Shoeib, Doaa A. Ahmed, A. F. Abd-Elraheem
Summary: The research aims to measure and analyze the levels of radon concentration, radium concentration, and radon exhalation rates in geopolymer cement mixes, and assess their impact on indoor air quality. Results indicate that geopolymer cement materials are safe for use in construction, except for specific mixes.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
M. J. Leotlela
Summary: This article presents the results of radiochemical events/processes that occur when water is exposed to ionising radiation of charged particles (beta and alpha-particles). The idea of cogeneration becomes even more lucrative if we consider that hydrogen energy generation is clean (also known as green energy) because of its insignificant contribution to environmental pollution. These results supplement the fluctuation in effective dose theory/hypothesis of a previous study on time-dependent variations in the radiological health impact of an interim SNFS facility presented in 2021 (Leotlela, 2021).
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Vyacheslav Ivanovich Pavlenko, Roman Vladimirovich Sidelnikov, Vitaly Valerievich Kashibadze, Mikhail Igorevich Dobynde, Dmitry Alexandrovich Kartashov, Vyacheslav Alexandrovich Shurshakov
Summary: This work explores the possibility of using a polymer composite to protect against neutron radiation in space conditions. The study shows that the proposed polymer composite has high structural properties necessary for use in space. Monte Carlo simulation is used to evaluate the neutron radiation passage through the material. The results demonstrate that the protective layer made of the polymer composite is thinner and more suitable for spacecraft, which is crucial due to limited space on board.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Islam G. Alhindawy, M. I. Sayyed, Dalal Abdullah Aloraini, Aljawhara H. Almuqrin, Mohammad S. Alomar, Gaber A. Elawadi, K. A. Mahmoud
Summary: This study investigated the effects of Neodymium (III) nitrate hexahydrate and lanthanum nitrate hexahydrate on the structural and radiation shielding properties of zircon mineral, and a new La/Nb-doped ZrO2 nanocomposite was fabricated. Experimental techniques such as energy-dispersive X-ray, scanning electron microscope, transmission electron microscopy, and X-ray diffraction pattern were used to analyze the structure and composition of the fabricated nanocomposites. Monte Carlo simulation was employed to evaluate the gamma-ray shielding properties. The results showed that the fabricated composites had good shielding characteristics, with a shielding capacity of 30-50% compared to pure lead in the intermediate energy range of 0.244-2.506 MeV.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Hassan Salah, Mohammed Alkhorayef, Layal Jambi, Mohammed Almuwanis, Abdelmoneim Sulieman
Summary: Cardiovascular nuclear medicine imaging examinations expose patients to high doses of ionizing radiation. This study assessed the radiation doses and public exposure in cardiac rest and stress SPECT scans. The effective dose from cardiac stress was higher than previous studies, which may be influenced by clinical indication imaging protocols and radiation safety measures.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Leandro Barbosa da Silveira Gatto, Delson Braz, Leonardo Pacifico, Paulo Travassos, Luis Alexandre Goncalves Magalhaes
Summary: This study evaluated the mean glandular dose (MGD) in mammography using a computed radiography (CR) system with a solid-state detector. Irradiations and simulations were conducted to determine the MGD and spectra for the same conditions. The results showed that the glandular dose was below the acceptable levels and the spectra were mostly in accordance with the literature.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Mawya Khafaji, Rashid Barnawi, Salma Amoudi, Hassan Gabbani, Rayan Alhazmi, Rayan Ahyad, Khalid Alsafi, Khuld Saeedi, Hassan Salah, Nissren Tamam, David Bradley, Sarah Albahiti, Abdelmoneim Sulieman
Summary: This study aimed to calculate typical values for common pediatric studies at King Abdulaziz University Hospital and compare them with other studies. The results showed that radiation dose levels in pediatric CT examinations were generally lower compared to other studies.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Faisal Almisned, Iskender Akkurt, Nurdan Karpuz
Summary: In this study, cross sections of medical radioisotopes were calculated using level density models. The results were compared with experimental data and it was found that the GSM level density models generally yielded consistent conclusions.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Shokufeh Saeid, Neda Mollakhalili-meybodi, Fateme Akrami Mohajeri, Farzan Madadizadeh, Elham Khalili Sadrabad
Summary: This study found that gamma irradiation significantly reduces the saponin and phytic acid content of quinoa. At a dose of 2.5 kGy, it can effectively reduce saponin and phytic acid without significantly damaging the antioxidant compounds.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Maria Demeter, Ion Calina, Anca Scarisoreanu, Valentina Mitran, Marcela Popa, Anisoara Cimpean, Mariana Carmen Chifiriuc, Marin Micutz, Elena Matei, Bogdana Mitu
Summary: Novel biocompatible composite hydrogels with good elastic and antimicrobial properties were synthesized by e-beam cross-linking using chitosan, water-soluble polymers, and silver nanoparticles (AgNP). The composite hydrogels showed high stability, absorption capability specific to infected wounds, and biocompatibility. The antimicrobial activity was influenced by the amount of AgNP and cross-linking degree, with significant inhibition against Gram-negative bacteria.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Anuor AT. Ayoub, Yushou Song, Mamoun IA. Sagiroun
Summary: This paper presents an assessment of the radiological hazard for humans from nuclear power plant effluent released into a river under normal operation scenarios. The study concludes that the radiological hazard from this effluent is minimal and within acceptable limits according to international standards. It also highlights the potential hazards related to the higher concentration of 137Cs in sediments over time.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Irabati Chakraborty, Nidhi Sinha, Bobby Antony
Summary: This article investigates the electron impact ionization of prebiotic molecules within the interstellar medium. By calculating the electron impact ionization cross section, the study provides insights into the chemistry of these molecules and their interaction with electrons, which play a vital role in the emergence of life's essential building blocks.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
C. V. Vishnu, Antony Joseph
Summary: This study investigated the gamma-ray shielding properties of composite materials made from natural rubber with different proportions of Barium Tungstate. The addition of Barium Tungstate significantly improved the characteristics of gamma radiation shielding. The experimental measurements showed good agreement with theoretical calculations obtained from simulation results.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Derya Mutlu, Idris Karagoz, Harun Sepetcioglu, Urkiye Akar Tarim, Orhan Gurler
Summary: This study examined the properties of epoxy composites with dendritic copper particles and found that the addition of copper particles improved the electrical conductivity and mechanical properties of the composites. The glass transition temperature of the composites could be adjusted by varying the copper particle ratio. The study also evaluated the shielding properties of epoxy-based composites against gamma radiation and found that the addition of copper particles significantly altered the microstructure and mechanical properties of the composites.
RADIATION PHYSICS AND CHEMISTRY
(2024)