4.7 Article

Ferrous ion enhanced Fenton-like degradation of emerging contaminants by sulfidated nanosized zero-valent iron with pH insensitivity

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Green & Sustainable Science & Technology

Accelerated Fe(III)/Fe(II) cycle for rapid elimination of Rhodamine B by a novel Mo2C co-catalytic Fe2+/H2O2 system

Hao Cheng et al.

Summary: Commercial molybdenum carbide (Mo2C) and ferrous iron (Fe2+) were investigated as co-catalysts for the activation of H2O2 in the treatment of organic contaminants. The presence of Mo2C effectively decomposed H2O2 and accelerated the conversion of Fe3+/Fe2+ compared to traditional Fenton process. Mo2C/Fe2+/H2O2 exhibited a significantly higher catalytic reactivity than MoS2, and the degradation rate constant of Rhodamine B in Mo2C/Fe2+/H2O2 was three times higher than that in Fe2+/H2O2. XPS analysis showed that Mo(II) and Mo(IV) played major roles in Fe3+ reduction, and EPR analysis confirmed the involvement of .OH, O-2(-), and O-1(2) in Mo2C/Fe2+/H2O2. ECOSAR toxicity assessment revealed a decrease in the toxicity of RhB degradation products after treatment. Overall, this study presents a promising Mo2C co-catalyzed Fenton process for efficient abatement of organic contaminants.

JOURNAL OF CLEANER PRODUCTION (2023)

Article Engineering, Environmental

Cyclodextrin-functionalized magnetic alginate microspheres for synchronous removal of lead and bisphenol a from contaminated soil

Jianhua Qu et al.

Summary: In this study, beta-cyclodextrin functionalized magnetic sodium alginate microspheres (MSA-CDMW) were synthesized for the removal of Pb and BPA from contaminated soil. The MSA-CDMW exhibited high adsorption capacity and could be easily separated from the soil using magnets. The study provides a novel and eco-friendly strategy for the remediation of heavy metals and organics contaminated soil.

CHEMICAL ENGINEERING JOURNAL (2023)

Article Engineering, Environmental

P-doped biochar regulates nZVI nanocracks formation for superefficient persulfate activation

Peng Huang et al.

Summary: In this study, a novel P-doped biochar loaded with nano zero-valent iron (nZVI) composite (nZVI@P-BC) was developed for efficient persulfate activation and gamma-hexachlorocyclohexane degradation. The P-doped biochar enhanced the specific surface area, hydrophobicity, and adsorption capacity. The nanocracked structure in nZVI@P-BC, induced by the electrostatic stress and new nucleation sites of P-doped biochar, facilitated the PS activation and degradation.

JOURNAL OF HAZARDOUS MATERIALS (2023)

Article Engineering, Environmental

Oxalated zero valent iron enables highly efficient heterogeneous Fenton reaction by self-adapting pH and accelerating proton cycle

Xu Zhang et al.

Summary: In this study, the shell of zero-valent iron (ZVI) was modified with highly proton-conductive FeC(2)O4.2H2O by ball-milling, which enabled ZVI to exhibit efficient Fenton reactivity. The modified ZVI showed high activity stability during 13 successive cycles and could be used across a wide pH range. This study clarified the significance of proton transfer on the reactivity of ZVI and provided an efficient strategy for achieving highly efficient and robust heterogeneous Fenton reactions of ZVI.

WATER RESEARCH (2023)

Article Environmental Sciences

Synergistic effect and mechanism of Cd(II) and As(III) adsorption by biochar supported sulfide nanoscale zero-valent iron

Xiaoyu Zheng et al.

Summary: Biochar derived from bamboo was utilized as a support for sulfide nanoscale zero-valent iron (S-nZVI@BC) for the simultaneous removal of Cd(II) and As (III) from water. The successful synthesis of S-nZVI@BC was confirmed by SEM and XRD characterization. Co-adsorption of Cd(II) and As(III) onto S-nZVI@BC followed the pseudo-second-order model and Langmuir model, with higher adsorption capacity compared to single adsorption. The optimal Cd(II)-to-As(III) concentration ratio was 1:2, and the presence of Ca2+ and Mg2+ inhibited Cd(II) removal, while phosphate and humic acid inhibited As(III) removal. S-nZVI@BC exhibited better electrochemical properties and the primary mechanisms for Cd(II) and As(III) removal were electrostatic adsorption, complexation, co-precipitation, and redox. This study provides insights into the efficient removal of Cd(II) and As(III) from wastewater using S-nZVI@BC.

ENVIRONMENTAL RESEARCH (2023)

Review Engineering, Environmental

Aqueous Iron(IV)-Oxo Complex: An Emerging Powerful Reactive Oxidant Formed by Iron(II)-Based Advanced Oxidation Processes for Oxidative Water Treatment

Zhen Wang et al.

Summary: High-valent iron(IV)-oxo complexes play a significant role as reactive intermediates in various chemical and biological systems. Among them, the aqueous iron(IV)-oxo complex ((FeaqO2+)-O-IV) is the simplest but also the most powerful ferryl ion species, showing high reactivity and selectivity in oxidizing water treatment. This review provides a comprehensive understanding of the chemical properties, oxidation mechanisms, and kinetics of (FeaqO2+)-O-IV, with comparisons to other free radicals. Additionally, the potential role of (FeaqO2+)-O-IV in Fe-aq(2+)-based advanced oxidation processes (AOPs) is discussed, challenging the conventional view that free radicals dominate these AOPs.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

Review Engineering, Environmental

Which Micropollutants in Water Environments Deserve More Attention Globally?

Yun Yang et al.

Summary: This review examines the issue of micropollutants in aquatic environments and presents a ranked list of globally important micropollutants for risk management and remediation efforts.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

Review Chemistry, Multidisciplinary

Recent advances and trends of heterogeneous electro-Fenton process for wastewater treatment-review

Zining Wang et al.

Summary: Electrochemical advanced oxidation processes (EAOPs), particularly the heterogeneous electro-Fenton (EF) process, with in-situ formation of hydrogen peroxide (H2O2), have shown great potential for the effective and environmentally friendly treatment of refractory organic pollutants. This article discusses the surface catalytic mechanisms for H2O2 activation in the heterogeneous EF process and summarizes the required features for H2O2 formation via selective oxygen reduction reaction (ORR) with carbonaceous electrodes. It also provides an overview of solid Fenton catalysts and integrated functional cathodes used in heterogeneous EF for wastewater treatment, along with a brief discussion on their catalytic activity and stability under different experimental conditions. Additionally, the application of heterogeneous EF process in the remediation of emerging contaminants is highlighted, while emphasizing the challenges and future prospects related to catalytic fall-off and multi-step/complex techniques for water purification.

CHINESE CHEMICAL LETTERS (2022)

Article Engineering, Environmental

Hydroxyl Radical Production via a Reaction of Electrochemically Generated Hydrogen Peroxide and Atomic Hydrogen: An Effective Process for Contaminant Oxidation?

Yang Li et al.

Summary: This study demonstrates an electrochemical advanced oxidation process (EAOP) that can simultaneously catalyze the hydrogen evolution reaction (HER) and the oxygen reduction reaction (ORR) to generate atomic hydrogen (H*) and hydrogen peroxide (H2O2) in situ. By using a palladium-coated carbon-PTFE gas diffusion electrode (Pd/C GDE) as a catalytic cathode, hydroxyl radicals ((OH)-O-center dot) can be formed by the reaction of electrogenerated H* with H2O2. The H*/GDE process is more effective in degrading organic contaminants compared to the conventional H*/H2O2 process.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

Article Engineering, Environmental

Molecular Structure and Sulfur Content Affect Reductive Dechlorination of Chlorinated Ethenes by Sulfidized Nanoscale Zerovalent Iron

Yalan Mo et al.

Summary: This study reveals the influence of sulfidized nanoscale zerovalent iron (SNZVI) on the dechlorination reactivity and selectivity of chlorinated ethenes (CEs). SNZVI exhibits significantly improved dechlorination reactivity and selectivity compared to zerovalent iron, depending on the chlorine number, chlorine position, and sulfur content of the CEs. By controlling the sulfidation degree of SNZVI, the dechlorination pathway and reactivity of CEs can be altered. These findings are important for the rational design of SNZVI for in situ groundwater remediation of various CEs.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

Article Engineering, Environmental

Transformation of sulfamethoxazole by sulfidated nanoscale zerovalent iron activated persulfate: Mechanism and risk assessment using environmental metabolomics

Xiaolong Yu et al.

Summary: This study investigates the degradation mechanism of sulfamethoxazole (SMX) by sulfidated nanoscale zerovalent iron (S-nZVI) driven persulfate and the potential risk of intermediates. The results show that both SO4- and ·OH are involved in the degradation of SMX, with SO4- being the predominant free radical. XPS analysis reveals that reduced sulfide species promote the conversion of Fe (III) to Fe (II), resulting in a higher transformation rate of SMX. Six intermediates are generated during the degradation process, and their potential risk is assessed using E. coli as a model microorganism.

JOURNAL OF HAZARDOUS MATERIALS (2022)

Article Engineering, Environmental

Stabilization of lead and cadmium in soil by sulfur-iron functionalized biochar: Performance, mechanisms and microbial community evolution

Jianhua Qu et al.

Summary: Sulfur-iron functionalized biochar (BC-Fe-S) was designed to stabilize Pb and Cd in soil, and it exhibited excellent stabilization performance. Moreover, the BC-Fe-S improved the diversity and composition of microbial community in the soil.

JOURNAL OF HAZARDOUS MATERIALS (2022)

Article Engineering, Environmental

Efficient activation of PAA by FeS for fast removal of pharmaceuticals: The dual role of sulfur species in regulating the reactive oxidized species

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.

WATER RESEARCH (2022)

Article Chemistry, Multidisciplinary

Generating High-valent Iron-oxo ≡FeIV=O Complexes in Neutral Microenvironments through Peroxymonosulfate Activation by Zn-Fe Layered Double Hydroxides

Yan Bao et al.

Summary: In this study, we propose the construction of a neutral microenvironment on the surface of Zn-Fe layered double hydroxide for activating PMS. By utilizing the amphoteric properties of zinc hydroxide, equivalent to Fe-IV=O can be continuously generated over a wide pH range. The neutral microenvironment mitigates the self-decomposition of Fe-IV=O and the hydrolysis reaction of iron, resulting in stable and efficient treatment of wastewater.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

Article Multidisciplinary Sciences

Electron delocalization triggers nonradical Fenton-like catalysis over spinel oxides

Zhi-Yan Guo et al.

Summary: This study investigates the catalytic mechanism of Fe-Mn spinel oxide catalysts, creating a catalyst capable of efficiently degrading pollutants by fine-tuning its crystal structure, with potential importance for water purification applications.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2022)

Article Engineering, Environmental

Peracetic acid activation by mechanochemically sulfidated zero valent iron for micropollutants degradation: Enhancement mechanism and strategy for extending applicability

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.

WATER RESEARCH (2022)

Article Engineering, Environmental

Sulfide-modified zero-valent iron activated periodate for sulfadiazine removal: Performance and dominant routine of reactive species production

Chen Ling et al.

Summary: In this study, sulfide-modified zero-valent iron was used to activate periodate for the removal of sulfadiazine. The S-Fe-0/PI process was found to be highly efficient in removing SDZ, with minimal leaching of iron. Additionally, the process was able to mineralize SDZ and reduce its toxicity.

WATER RESEARCH (2022)

Article Engineering, Environmental

Transformation and fate of pharmaceuticals, personal care products, and per- and polyfluoroalkyl substances during aerobic digestion of anaerobically digested sludge

Yijing Li et al.

Summary: Post-anaerobic aerobic digestion (PAAD) has a significant impact on the fate of pharmaceuticals and personal care products (PPCPs), but has limited effect on per- and polyfluoroalkyl substances (PFAS). Some PPCPs undergo substantial transformation after aerobic digestion, while PFAS are recalcitrant to degradation.

WATER RESEARCH (2022)

Article Chemistry, Physical

Sustainable Fe(III)/Fe(II) cycles triggered by co-catalyst of weak electrical current in Fe(III)/peroxymonosulfate system: Collaboration of radical and non-radical mechanisms

Xianhu Long et al.

Summary: In this study, an electrochemical system was used as a co-catalyst to enhance the activation of peroxymonosulfate for efficient degradation of Sulfamethoxazole. The collaboration of radicals and non-radicals oxidation was found to be responsible for the degradation, with singlet oxygen and Fe(IV) surprisingly involved in the system. The relative contributions of various reactive oxygen species were calculated, and multiple degradation pathways for Sulfamethoxazole were proposed.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Article Engineering, Environmental

Atomic Hydrogen in Electrocatalytic Systems: Generation, Identification, and Environmental Applications

Wentian Zheng et al.

Summary: This paper discusses electrochemical reduction as a method for removing organic contaminants from water, focusing on identification and quantification methods for H* and the reaction pathways and mechanisms in environmental applications. The key challenges facing H* reduction technologies include the establishment of synthetic methods, improvement of identification approaches, and further exploration of the H* reaction mechanism.

WATER RESEARCH (2022)

Article Engineering, Environmental

Coincorporation of N and S into Zero-Valent Iron to Enhance TCE Dechlorination: Kinetics, Electron Efficiency, and Dechlorination Capacity

Li Gong et al.

Summary: Sulfidation and nitridation synergistically increased the dechlorination rate of trichloroethene by S-N(C)-mZVI(bm), showcasing a higher reaction constant than S-mZVI(bm) and N(C)-mZVI(bm). The multiheteroatom incorporation approach optimized ZVI for groundwater remediation, providing a basis for further advances in reactive material synthesis.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2021)

Article Engineering, Environmental

Enhanced Oxidation of Organic Contaminants by Iron(II)-Activated Periodate: The Significance of High-Valent Iron-Oxo Species

Yang Zong et al.

Summary: Potassium periodate (PI, KIO4) can be activated by Fe(II) under acidic conditions to rapidly remove organic contaminants, generating high-valent iron-oxo species Fe(IV) and avoiding the formation of harmful iodine species. Isotope labeling techniques and X-ray absorption spectroscopy provided insights into the reaction mechanism of Fe(II)/PI process, enhancing our understanding of the efficient removal of emerging contaminants.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2021)

Review Engineering, Environmental

A review on effective removal of emerging contaminants from aquatic systems: Current trends and scope for further research

B. Senthil Rathi et al.

Summary: The article discusses the sources, detection methods, and treatment methods of emerging contaminants. The research aims to consider adsorption as a beneficial treatment method for emerging contaminants, as well as explore advanced and cost-effective treatment methods for emerging contaminants.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Chemistry, Physical

Photocatalysis-activated SR-AOP over PDINH/MIL-88A(Fe) composites for boosted chloroquine phosphate degradation: Performance, mechanism, pathway and DFT calculations

Xiao-Hong Yi et al.

Summary: PDINH/MIL-88A(Fe) composites were fabricated using a facile ball-milling strategy, showing outstanding degradation performance towards CQ under low power LED visible light. The activation of PDS over P25M175 and pristine MIL-88A contributed to boosted CQ degradation efficiency through direct and indirect electron transfer. Active radicals and singlet oxygen were found to participate in the CQ decomposition, with proposed degradation pathways and toxicity evaluations of intermediates.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Article Chemistry, Physical

Oxygen vacancy on hollow sphere CuFe2O4 as an efficient Fenton-like catalysis for organic pollutant degradation over a wide pH range

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)

Review Engineering, Environmental

Recent Advances in Sulfidated Zerovalent Iron for Contaminant Transformation

Ariel Nunez Garcia et al.

Summary: The development of S-(n)ZVI technology over the past decade has sparked significant interest due to its high reactivity towards chlorinated solvents and heavy metals. Researchers are actively exploring different synthesis approaches and properties to enhance the reactivity of S-(n)ZVI.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2021)

Article Engineering, Environmental

Size-Dependent Response of the Reductive Reactivity of Zerovalent Iron toward the Coexistence of Natural Organic Matter

Jia-Qi Chen et al.

Summary: This study compared the oxic and anoxic removal of DTA by ZVI of different sizes in the presence of NOM, revealing size-dependent responses of ZVI towards NOM. Under aerobic conditions, HA can either promote or inhibit DTA degradation by ZVI, while under anaerobic conditions, HA always suppresses DTA removal regardless of ZVI size.

ACS ES&T ENGINEERING (2021)

Article Environmental Sciences

Nano-sized Zero-Valent Iron Coupled with Sulfidation and Ferrous Implantation Enhances the Reduction-Oxidation Removal of Iodinated Contrast Medium

Guannan Zhou et al.

Summary: This study revealed that the efficiency of removing ICM DTA using the S-nZVI/Fe2+ system was significantly enhanced under neutral and aerobic conditions. The coupled effect of sulfidation and Fe2+ implantation promoted the corrosion of Fe(0) and facilitated the Fenton-like reaction for enhanced DTA removal with two fundamental stages: the efficient deiodination stage and the mild oxidation stage. These findings provide new insights into improving the removal efficiency of complex ICM under mild conditions through an enhanced-nZVI strategy.

ACS ES&T WATER (2021)

Article Chemistry, Multidisciplinary

Sulfidized Nanoscale Zero-Valent Iron: Tuning the Properties of This Complex Material for Efficient Groundwater Remediation

Jiang Xu et al.

Summary: Sulfidized NZVI (SNZVI) has emerged as a promising material for groundwater remediation, expanding the range of reactive contaminants and significantly improving selectivity and reactive lifetime. SNZVI, a complex mixture of reactive metallic iron and iron sulfides, has desirable properties compared to traditional NZVI. Research is now focusing on understanding the factors influencing SNZVI reactivity and tuning synthesis conditions to control sulfur speciation for tailored reactivity towards specific groundwater contaminants.

ACCOUNTS OF MATERIALS RESEARCH (2021)

Article Multidisciplinary Sciences

In situ organic Fenton-like catalysis triggered by anodic polymeric intermediates for electrochemical water purification

Dan-Ni Pei et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2020)

Article Engineering, Environmental

Aerobic removal of iodinated contrast medium by nano-sized zero-valent iron: A combination of oxidation and reduction

Guan-Nan Zhou et al.

JOURNAL OF HAZARDOUS MATERIALS (2019)

Article Engineering, Environmental

Coupled Effect of Sulfidation and Ferrous Dosing on Selenate Removal by Zerovalent Iron Under Aerobic Conditions

Peng Fan et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2019)

Article Engineering, Environmental

Dechlorination of Excess Trichloroethene by Bimetallic and Sulfidated Nanoscale Zero-Valent Iron

Feng He et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2018)

Review Engineering, Environmental

Advances in Surface Passivation of Nanoscale Zerovalent Iron: A Critical Review

Sungjun Bae et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2018)

Article Chemistry, Physical

Optimal design and characterization of sulfide-modified nanoscale zerovalent iron for diclofenac removal

Shikun Song et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2017)

Article Multidisciplinary Sciences

Rapid removal of organic micropollutants from water by a porous β-cyclodextrin polymer

Alaaeddin Alsbaiee et al.

NATURE (2016)

Article Engineering, Environmental

Effect of Structural Transformation of Nanoparticulate Zero-Valent Iron on Generation of Reactive Oxygen Species

Di He et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2016)

Article Chemistry, Physical

Ferrous ions promoted aerobic simazine degradation with Fe@Fe2O3 core-shell nanowires

Wei Liu et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2014)

Article Water Resources

Nanoscale zero valent iron and bimetallic particles for contaminated site remediation

Denis O'Carroll et al.

ADVANCES IN WATER RESOURCES (2013)