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Article
Chemistry, Multidisciplinary
Heshan Zheng et al.
Summary: This study investigated the catalytic mechanism and performance of Fe3O4-GO(x) composites with different material ratios in three advanced oxidation processes (AOPs) for tetracycline hydrochloride (TCH) degradation. The ratio of GO in the composites showed different degradation capacities in each AOP based on distinct mechanisms. Fe3O4-rGO(20wt%) exhibited the highest catalytic performance in ozone decomposition, while Fe3O4-rGO(5wt%) showed the best performance in PDS and photo-Fenton processes. The catalytic mechanisms involving reactive oxygen species (ROS) produced by the conversion between Fe2+/Fe3+ were also analyzed.
CHINESE CHEMICAL LETTERS
(2023)
Article
Environmental Sciences
Shuo Li et al.
Summary: The Co-Bi25FeO40 catalyst in combination with MW/PDS system shows superior catalytic efficiencies for degrading BPA and disinfecting E.coli simultaneously. The microwave energy promotes the production of nanobubbles and enhances the reaction efficiency. This work demonstrates the potential for efficient integration of contaminant purification and pathogenic microorganism inactivation.
Article
Engineering, Environmental
Xing Liu et al.
Summary: By constructing a CdS@Polydopamine@SnO2-x sandwich structure and employing an efficient electrostatic repulsion and anchor strategy, the activity and stability of the photocatalyst have been significantly enhanced.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Yinhao Dai et al.
Summary: This study used a microwave-activated peracetic acid system to remove sulfamethoxazole in water. The results showed that alkaline condition was more favorable for the degradation of sulfamethoxazole. Various factors, such as microwave power, reaction temperature, initial PAA concentration, and common coexisting substances, were systematically studied to understand their influence on the degradation process. The reaction was found to be dominated by a non-radical process, and four degradation pathways were proposed. The toxicity prediction indicated that sulfamethoxazole was converted into less toxic substances. This study provides important theoretical implications for the development of advanced oxidation processes for organic contaminants removal in water.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Shu-Run Yang et al.
Summary: In this study, low-cost and environmentally friendly FeS was used to activate peracetic acid (PAA) and efficiently remove pharmaceuticals from wastewater. Sulfur species were found to play a dual role in regulating the reactive oxidized species.
Article
Engineering, Environmental
Ran Duan et al.
Summary: Tetracycline has been detected in various environments, leading to the development of resistance in bacterial populations. This study fabricated soybean straw biochars (SSBs) at different pyrolysis temperatures and used them as activators for the degradation of tetracycline and disinfection of tetracycline-resistant Escherichia coli. The results showed that the purification effect of SSBs depended on the pyrolysis temperature, with SSB1000/PS system exhibiting superior degradation and disinfection capabilities. The purification mechanisms of tetracycline and Escherichia coli were found to be different, with tetracycline degradation mainly relying on surface-bound radicals and bactericidal activity attributed to free SO4 center dot- in bulk solutions. The catalytic performance of SSB1000 was attributed to its unique characteristics, such as large mesopore volumes, high C=O content, low interfacial charge transfer resistance, and strong electron donating capacity.
Article
Chemistry, Physical
Xun Meng et al.
Summary: In this study, carbon-coated MnFe2O4/MnO heterojunction nanocomposites with foam-like macroporous structures were successfully synthesized, exhibiting excellent microwave absorption properties, which are determined and dominated by the modulation of heterointerfaces and defect sites.
Article
Engineering, Environmental
Yang Liu et al.
Summary: Sodium bismuthate dihydrate (NaBiO3.2 H2O, NBH) nanosheets were successfully synthesized and the effect of Fe(III) as a variable valence metal ion on the catalytic system of NBH activation of peroxymonosulfate (PMS) for levofloxacin (LVF) degradation was investigated. Singlet oxygen (O-1(2)) and superoxide radical (O-2(center dot-)) were identified as the main reactive oxygen species (ROS). The incorporation of Fe(III) in NBH resulted in lattice oxygen vacancies and the formation of active oxygen species. This study expands the technological application of NBH in the catalytic oxidation of variable valence metals, which is important for the removal of fluoroquinolone antibiotics.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Huimin Zhang et al.
Summary: In this study, MnFe2O4/CNT was introduced as a third electrode in the electrochemical oxidation-peroxymonosulfate system and proved to promote the degradation of tetracycline. The optimal conditions for TC removal efficiency were investigated, and a removal rate of 87.7% was achieved under specific conditions. The effect of humic acid on degradation was also studied, and the system was found to generate more active species for degradation. The degradation mechanism of TC was estimated through XPS analysis. This research provides a new perspective for electrochemical oxidation using nanomaterials as microelectrodes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Tingting Zhu et al.
Summary: In this study, peracetic acid (PAA), ultraviolet (UV)/PAA, and ultrasonic (US)/PAA pre-oxidation were used to improve the ultrafiltration (UF) performance for algae-laden water treatment. The results showed that PAA at a dosage of 10 mg/L achieved the best performance with a 76.26% reduction in membrane fouling resistance. Low dosage of UV/PAA effectively controlled fouling by enhancing the degradation of dissolved organics. The study also revealed that moderate oxidation, with high organic degradation and low cell rupture, was the key principle for algae-laden water treatment.
Article
Engineering, Environmental
Meng-Fan He et al.
Summary: Mechanically sulfidated microscale zero valent iron was found to effectively activate peracetic acid for rapid degradation of multiple micropollutants under neutral conditions. The presence of sulfides enhanced the generation of Fe(II) and promoted PAA activation over multiple cycles. Co-existence of Fe(III) dramatically improved contaminants removal efficiency and enhanced system tolerance to water matrix in the S-ZVI/PAA system.
Article
Engineering, Environmental
Lingwei Gao et al.
Summary: This study evaluated the effects of various quenchers on the mechanism of a cobalt mediated peroxymonosulfate (Co(II)/PMS) process and found that these quenchers not only quench target reactive species but also cause interference effects. Therefore, caution should be exercised when applying the quenching method to investigate the mechanism of the persulfate-based process.
Article
Chemistry, Physical
Debika Gogoi et al.
Summary: Water pollution is a major issue that threatens human health and aquatic life. This study presents a highly efficient catalyst (Cu-CF-PC) derived from biomass, which can effectively remove various water pollutants. The catalyst is cost-effective, reusable, and environmentally friendly.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Chemical
Jian Wei et al.
Summary: In this study, an N-doped graphite catalyst (Fe-NC-4) was developed to activate PMS for the degradation of sulfamethoxazole (SMX). The Fe-NC-4 catalyst showed superior capacity in PMS activation and exhibited satisfactory stability in natural water, making it an effective catalyst for efficiently degrading aqueous contaminants.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Hanbo Yu et al.
Summary: Exploring the construction of heterostructures with bismuth oxybromide nano-units chemically implanted on indium vanadate particles to form composites resulted in extended visible light absorption range, accelerated charge transfer, and enhanced photocatalytic activity. The hierarchical core-shell structure provided large surface area for increased adsorption and degradation of pollutants, leading to the degradation of 92.59% of ciprofloxacin within 1 hour under visible light. The study also investigated reaction pathways using multiple models and explored the impact of various factors on adsorption and degradation of pollutants.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Hanbo Yu et al.
Summary: By doping with Sn and regulating the interfacial electric field between bismuth semiconductors, this study successfully enhanced the surface charge transfer efficiency, visible-light induced degradation rates, and CO2 photoreduction activity. The results provide a universal strategy for designing bismuth-containing heterojunction with tunable interfacial electric field.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Longlong Zhang et al.
Summary: The novel Co@MXenes catalyst showed superior performance for activating PAA in water decontamination, mainly due to the = Co(III)/= Co(II) cycle triggered by the Ti3C2Tx MXene substrate, leading to enhanced PAA activation. The catalyst exhibited high stability, low cobalt ion leaching, and high reusability, making it a promising catalyst for PAA activation in wastewater treatment.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Environmental Sciences
Rui Zhou et al.
Summary: The novel APG@MnFe2O4 nanocomposite effectively degraded 2,4-DCP as a PMS activator, exhibiting a faster reaction rate, higher degradation efficiency, and superior cyclic stability.
Article
Engineering, Chemical
Yu Gao et al.
Summary: This study successfully prepared 3D C@ZnCo2O4 material and investigated its influence on the degradation of CIP, revealing significant radical activity and identifying multiple degradation pathways. Toxicity tests highlighted the importance of exploring the toxicity of intermediate products.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Review
Environmental Sciences
Dariusz Kiejza et al.
Summary: There has been a growing interest in using advanced oxidation processes for water and wastewater decontamination, with new oxidants such as peracetic acid widely utilized. The degradation of organic compounds involves radicals derived from the activation of peracids, resulting in the formation of products of lower mass, less toxic, and more susceptible to biodegradation. The activation methods and matrix composition have a significant impact on the efficiency of contamination removal using peracids.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Jia Wan et al.
Summary: A self-cleaning surface was created via vacuum-assisted layer-by-layer self-assembly of a photocatalytic membrane, effectively solving irreversible contamination buildup on filtration membranes. The rejection rates for simulated polysaccharides and proteins were high, indicating efficient filtration. This innovative composite membrane showed excellent photocatalytic performance and mechanical stability, highlighting the potential for improving photocatalytic membrane technology.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Venkatesha Narayanaswamy et al.
Summary: Mixed ferrite nanoparticles with varying compositions were synthesized and characterized for their structure, morphology, and magnetic properties. The results showed that particle size decreased with increasing composition x, exhibited significant magnetic properties, and had excellent magneto thermic heating capabilities.
Article
Chemistry, Multidisciplinary
Long-Shuai Zhang et al.
Summary: A novel catalyst Fe-1/CN was developed to achieve 100% selective production of O-1(2) through activation of PMS, enabling highly selective and efficient degradation of organic pollutants.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Rong-Rong Ding et al.
Summary: A novel heterogeneous Fenton-like catalyst, HS-CuFe2O4-sigma, was designed in this study to efficiently remove the pollutant ciprofloxacin. The efficient catalytic performance of HS-CuFe2O4-sigma is attributed to the synergistic effect of oxygen vacancies and the nanoconfinement of the catalyst's special hollow structure.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Ruobai Li et al.
Summary: This study investigated an advanced oxidation process using peracetic acid (PAA) and ruthenium(III) (Ru(III)) to oxidize micropollutants in water. The results showed that at neutral pH, the PAA-Ru(III) system efficiently removed a wide range of pharmaceuticals, with Ru(III) playing a crucial role in activating PAA for micropollutant oxidation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yin Wang et al.
Summary: In this study, perovskite intercalated montmorillonite composite catalysts loaded with different mass fractions of iron oxide were prepared by impregnation method for microwave induced catalytic degradation of BPA. The results showed that iron oxide had an absorption effect on microwave, enhancing the absorption property and catalytic activity of the composite material. The surface active sites of the catalyst could be excited by microwave to generate oxidative free radicals, leading to the degradation of BPA through electron hole transport.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Review
Environmental Sciences
Juhee Kim et al.
Summary: Peracetic acid (PAA) is an emerging oxidant and disinfectant that has gained increasing attention in wastewater treatment, food, and medical industries. This paper comprehensively reviews the reactivity of PAA with various organic compounds, highlighting PAA as a highly reactive and selective electrophile with significant variability in second-order rate constants. The study identifies sulfur moieties as exhibiting exceptionally high reactivity towards PAA and suggests the formation of oxygen-added reaction products from PAA oxidation. Further research is needed to evaluate a broader range of compounds and their oxidation products and toxicity in wastewater treatment.
Article
Engineering, Environmental
Zongping Wang et al.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2020)
Article
Engineering, Environmental
Yu Gao et al.
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Engineering, Environmental
Wei Wu et al.
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Engineering, Environmental
Hangdao Qin et al.
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Environmental Sciences
Lei Li et al.
Article
Engineering, Environmental
Yin Wang et al.
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Engineering, Environmental
Jingwen Wang et al.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2020)
Article
Chemistry, Physical
Shuo Li et al.
JOURNAL OF POWER SOURCES
(2018)
Article
Multidisciplinary Sciences
Eili Y. Klein et al.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2018)
