Article
Environmental Sciences
Tingyu Cui, Zhihui Xiao, Zhenbei Wang, Chao Liu, Zilong Song, Yiping Wang, Yuting Zhang, Ruoyu Li, Bingbing Xu, Fei Qi, Amir Ikhlaq
Summary: This study investigated the degradation of Carbamazepine by electro-Fenton oxidation using a FeS2/carbon felt cathode, accelerating the reaction between H2O2 and ferrous ions to produce more hydroxyl radicals and eliminate iron sludge. Various operational parameters were explored, and an empirical kinetic model was established to predict changes in CBZ concentration. The contribution of different oxidation types to the EF process was calculated and the role of the FeS2-modified cathode was verified through kinetic analysis and quenching experiments.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Physical
Ying Gao, Weihuang Zhu, Yaqi Li, Junli Li, Sining Yun, Tinglin Huang
Summary: A novel PCF/Ppy/AQS cathode was investigated for an efficient electro-Fenton process. The cathode showed a larger surface area, more active sites, and enhanced ORR catalytic effect, leading to improved performance of the electro-Fenton system.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Ying Gao, Weihuang Zhu, Yaqi Li, Qingyu Zhang, Haonan Chen, Jianfeng Zhang, Tinglin Huang
Summary: A novel binder-free AQS/PANI@CF cathode for selective H2O2 generation and efficient pollutant removal in electro-Fenton was fabricated, showing high stability and repeatability. The cathode achieved a high H2O2 concentration of 83.3 mu mol L-1 and a RhB degradation efficiency of 98.8% within 60 minutes. The main generated reactive radicals were identified through quenching experiments and EPR tests, and a plausible mechanism of the cathode applied electro-Fenton process was proposed. This work serves as a reliable reference for subsequent investigations.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Review
Chemistry, Multidisciplinary
Yuanyuan Yao, Yuqi Pan, Yanxi Yu, Zixun Yu, Leo Lai, Fangzhou Liu, Li Wei, Yuan Chen
Summary: This article reviews bifunctional catalysts for heterogeneous electro-Fenton processes. The generation mechanism of oxidizing radicals from oxygen is described, and different types of bifunctional catalysts are compared based on their elemental compositions. Additionally, five other methods beyond electrocatalysts that can improve the performance of heterogeneous electro-Fenton processes are presented.
ENVIRONMENTAL CHEMISTRY LETTERS
(2022)
Article
Engineering, Environmental
Jingjing Zhang, Dongbo Wang, Feiping Zhao, Jing Feng, Haopeng Feng, Jun Luo, Wangwang Tang
Summary: A novel and efficient heterogeneous electro-Fenton (EF) process was developed using a potassium ferrate modified carbon felt cathode for chloramphenicol removal. The Fe-CF cathode exhibited excellent performance over a wide range of pH and showed good recyclability and potential for real water treatment applications.
Article
Chemistry, Physical
Jiaxiang Liang, Yanping Hou, Jie Sun, Hongxiang Zhu, Han Pang, Jinhang Yang, Mi Wang, Jiangli Sun, Jianhua Xiong, Wenyu Huang, Zebin Yu, Shuangfei Wang
Summary: This work aims to explore the effect of optimal overpotential discrepancy between two-electron oxygen reduction reaction (OP2eORR) and metal reduction reaction (OPMRR) of the cathode on electro-Fenton (EF) system performance, and propose a strategy to eliminate overpotential discrepancy. The research demonstrates that cathodes with the same overpotential as the desired reaction exhibit superior EF performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Jong-Gook Kim, Hye-Bin Kim, Won-Gune Jeong, Kitae Baek
Summary: A novel oxidation system combining calcium peroxide and pyrite was proposed for the degradation of oxidizable contaminants in groundwater. This system showed higher efficiency in degrading sulfanilamide compared to conventional Fenton reaction, indicating its effectiveness in groundwater remediation.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Yuwei Zhao, Shayan Hojabri, Stephanie Sarrouf, Akram N. Alshawabkeh
Summary: Efficient and steady electrogeneration of H2O2 is achieved using a specially coated graphite felt cathode in a flow-through system without external oxygen supply. The PDMS coating inhibits electrowetting and extends the electrode's lifespan, though increasing PDMS content can reduce H2O2 production. The modified graphite felt exhibits high stability and performance in a neutral or alkaline environment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Xin Zhao, Yusen Su, Andy Berbille, Zhong Lin Wang, Wei Tang
Summary: It has been found that dielectric films modified by inductively coupled plasma etching with argon show higher reactivity and degradation efficiency in contact-electro-catalysis process. The contact angle and specific surface area of the films are non-linearly affected by the etching time. This study suggests that film-based contact-electro-catalysis has potential for scalable applications.
Review
Chemistry, Multidisciplinary
Zining Wang, Mingyue Liu, Fan Xiao, Georgeta Postole, Hongying Zhao, Guohua Zhao
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
Andrea N. Arias, Rocio Giron-Navarro, Ivonne Linares-Hernandez, Veronica Martinez-Miranda, Elia Alejandra Teutli-Sequeira, Justo Lobato, Manuel A. Rodrigo
Summary: This study evaluated the electrochemical oxidation of gaseous streams polluted with benzene, toluene, and p-xylene using a jet mixer and electrochemical cell device. The technology achieved an efficiency of 14% in hydrogen peroxide production at atmospheric pressure and 12 degrees C. Results demonstrated the effectiveness of electrochemically assisted absorption for treating these polluted streams. In particular, the electro-Fenton assisted absorption (EFAA) showed higher removal efficiencies compared to electrolytic assisted absorption (ELAA) and physical absorption (PA) due to the promotion of Fenton reagent formation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Lele Cui, Zhiwen Li, Qingqing Li, Meifei Chen, Wenheng Jing, Xuehong Gu
Summary: Synthesis of Cu/CuFe2O4 bifunctional electrodes and modification of graphite felt using polytetrafluoroethylene technique enhance degradation activity in heterogeneous electro-Fenton process, showing great potential for environmental remediation.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Nguyen Trung Dung, Le Thuy Duong, Nguyen Thi Hoa, Vu Dinh Thao, Le Viet Ngan, Nguyen Nhat Huy
Summary: CoFe2O4/CF cathode was synthesized and applied for EF treatment of TTZ, showing high efficiency. The optimal conditions and reaction mechanism were identified for TTZ removal, demonstrating the promising application of CoFe2O4/CF in wastewater treatment.
Article
Environmental Sciences
Aref Shokri, Bahram Nasernejad, Mahdi Sanavi Fard
Summary: The efficiency of heterogeneous electro-Fenton technology in degrading recalcitrant organic pollutants in wastewater is highly evident. This green technology has gained significant attention from wastewater treatment research communities due to its outstanding performance, eco-friendliness, and wide operability. The article discusses the mechanism of the electro-Fenton process, the properties of efficient catalysts, and the challenges hindering its commercialization. It proposes future research directions and concludes that addressing those gaps will make the commercialization of electro-Fenton technology a realistic goal.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Environmental Sciences
Wei Zhou, Xiaoxiao Meng, Jihui Gao, Fei Sun, Guangbo Zhao
Summary: This study proposed a strategy of hydrophilicity-hydrophobicity regulation and showed that using graphite felt as electrodes can significantly increase H2O2 production, 7.3 times, 7.6 times, and 7.7 times higher than the original GF for hydrophilic GF, hydrophobic GF, and Janus GF, respectively. The results demonstrate that currents and stirring rates affect the H2O2 yields.
Article
Environmental Sciences
Antia Fdez-Sanroman, Marta Pazos, Angeles Sanroman
Summary: This study evaluated the removal of persistent emerging and dangerous pollutants (pharmaceuticals and pathogens) in synthetic wastewater using heterogeneous Advanced Oxidation Processes. The results showed that increasing the concentration of PMS and Basolite (R) F-300 improved the treatment efficiency.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Chemistry, Physical
Gabriela Lama, Jessica Meijide, Angeles Sanroman, Marta Pazos
Summary: Water pollution is a serious global environmental issue, with emerging pollutants posing risks to human and animal health. Advanced oxidation processes have been proposed as an effective technology for removing these pollutants. Recent research focuses on the use of different types of heterogeneous catalysts to overcome limitations of conventional treatment methods.
Article
Environmental Sciences
Pablo Blanco-Canella, Gabriela Lama, Ma Angeles Sanroman, Marta Pazos
Summary: Disinfection through the generation of hydroxyl and sulfate radicals was validated and optimized in this study. The optimized conditions were applied to real matrices from wastewater treatment plants, demonstrating the potential of these processes for disinfection.
Article
Biotechnology & Applied Microbiology
Abdelmageed M. M. Othman, Angeles Sanroman, Diego Moldes
Summary: In this study, it was found that the multi-point covalently immobilized laccase from Myceliophthora thermophila on the modified immobilized carrier (Immobead 150P) showed the best immobilization characteristics, retaining 95% of its initial activity after 10 cycles of operation at pH 3.0 and temperature 70 degrees C. The thermodynamic parameters of thermal inactivation demonstrated the positive impact of immobilization. The immobilized enzyme exhibited enhanced stability in alkaline conditions and the ability to provide hydrophobic properties to wood.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2023)
Article
Electrochemistry
Aida M. Diez, Xiang Lyu, Marta Pazos, M. Angeles Sanroman, Geoff McCool, Oleg I. Lebedev, Yury Kolen'ko, Alexey Serov
Summary: This work introduces a convenient phosphorization protocol to convert commercial bimetallic Ni-Mo and Ni-Re electrocatalysts into their respective phosphides, enabling them to be stable under acidic conditions and suitable for water reduction in acidic electrolyte.
ELECTROCHIMICA ACTA
(2023)
Article
Environmental Sciences
Aida M. Diez, Marta Pazos, M. Angeles Sanroman, Helen Valencia Naranjo, Joachim Mayer, Yury Kolen'ko
Summary: This study successfully synthesized and characterized fluoride-doped-TiO2 and demonstrated its applicability in solid-phase photodegradation of polyethylene films for the first time. After three weeks of UV A radiation using a low consumption LED lamp, the polyethylene films containing only 2% of the photocatalyst experienced nearly 50% weight loss, surpassing previously reported data. The results suggest the potential for future production of self-photodegradable plastics for environmental and wastewater treatment applications.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Physical
Antia Fdez-Sanroman, Barbara Lomba-Fernandez, Marta Pazos, Emilio Rosales, Angeles Sanroman
Summary: Three CuFe-MOFs with different structures were synthesized successfully by varying the ratio of solvents, salts, or temperature. CuFe(BDC-NH2)(D) and CuFe(BDC-NH2)(S) exhibited improved PMS activation for Rhodamine B removal, achieving a removal rate of around 92%. The best degradation system for a mixture of antibiotic and anti-inflammatory drugs was the photo-assisted activation of PMS using CuFe(BDC-NH2)(D) and CuFe(BDC-NH2)(S), resulting in complete degradation within 1 hour. CuFe(BDC-NH2)(R)/PMS showed higher antibacterial activity due to its higher copper content.
Article
Chemistry, Physical
Anton Puga, Emilio Rosales, Marta Pazos, Maria Angeles Sanroman
Summary: The synthesis of an iron catalyst (Fe-DES) was proposed in this work, which was characterized physically and chemically. The Fe-DES was shown to be a multipurpose catalyst that can be applied in various processes for the removal of pharmaceuticals in wastewater.
Article
Biotechnology & Applied Microbiology
Esin Balci, Emilio Rosales, Marta Pazos, Aysun Sofuoglu, Maria Angeles Sanroman
Summary: This study investigated the degradation of dibutyl phthalate (DBP) using esterase and lipase enzymes from different microorganisms, and examined the feasibility of immobilizing the most effective enzyme on a clayey material. The results showed that esterase from Bacillus subtilis had the highest degradation efficiency and immoblization improved thermal and storage stability. Additionally, the immobilized enzyme composite maintained high catalytic activity after 7 continuous cycles.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Review
Food Science & Technology
Silvia Escudero-Curiel, Alba Giraldez, Marta Pazos, Angeles Sanroman
Summary: Agri-food residues and by-products are recognized as valuable products that can be used in other industries, such as environmental remediation. These materials, transformed into biochar and hydrochar through engineering techniques, have substantial potential as versatile adsorbents in wastewater treatment and promising alternatives in various environmental and energy-related applications. This sustainable approach provides cost-effective and satisfactory solutions, addressing environmental concerns and paving the way for a more eco-friendly and resource-efficient future.
Article
Biotechnology & Applied Microbiology
Imane Akkari, Zahra Graba, Marta Pazos, Nacer Bezzi, Fatiha Atmani, Amar Manseri, Mohamed Mehdi Kaci
Summary: Due to the rapid growth of bio-waste, there are various difficulties in disposal and governance. Therefore, recycling and repurposing bio-waste for environmental purposes have gained more attention. In this study, a novel activated hydrochar (AHPP) was synthesized from pomegranate peels using hydrothermal carbonization (HTC) followed by phosphoric acid activation. The characteristics of AHPP were determined using various techniques, and its potential for adsorbing Basic Red 46 (BR46) dye was assessed. The results showed that AHPP can effectively adsorb BR46, and it could be reused multiple times.
BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY
(2023)
Article
Environmental Sciences
Alba Giraldez, Antia Fdez-Sanroman, Daniel Terron, M. Angeles Sanroman, Marta Pazos
Summary: In recent years, the issue of pathogens in the environment has gained widespread concern. New research has been conducted on removing pathogens and persistent pollutants from water. The study evaluated the effectiveness of the nanostructure copper-organic framework, HKUST-1, as a catalyst for eliminating Escherichia coli and generating sulphate radicals through peroxymonosulphate (PMS) activation. The disinfection process was optimized and achieved complete elimination of Escherichia coli growth after 30 minutes using a concentration of 60.5 mg/L HKUST-1 and 0.1 mM PMS. A novel development involving encapsulating HKUST-1 on polyacrylonitrile was proposed to overcome operational limitations and enable continuous treatment in a flow disinfection process.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Silvia Escudero-Curiel, Marta Pazos, Angeles Sanroman
Summary: Pharmaceuticals and personal care products (PPCPs) pose harm to ecosystems and human health, and regulating discharges at wastewater treatment plants (WWTPs) has become a priority. This study evaluated the removal of Fluoxetine (FLX) through adsorption and regeneration cycles using NQ40 honeycomb 3D carbon aerogel as a high-capacity adsorbent. The regeneration process using Fenton and Fenton-like methods demonstrated the effectiveness of hydrogen peroxide in removing high concentrations of FLX.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
