Article
Electrochemistry
L. . Carolina Espinoza, Soledad Bollo, David Vasquez, Valentina Lagos, Marcelo J. Kogan
Summary: Electrodes based on mixtures of ruthenium, iridium and titanium oxides were used to treat water contaminated with pathogenic microorganisms. The modified titanium sheets exhibited homogeneous and electroactive surfaces. Both MMO1 and MMO5 electrodes effectively inactivated E. coli, with MMO5 achieving complete bacterium inactivation in only 6 minutes. The disinfection mechanism involved direct oxidation of the bacteria on the electrode surface, with chloride proving to be more effective than sulfate.
ELECTROCHIMICA ACTA
(2023)
Article
Biochemistry & Molecular Biology
Yunqing Zhu, Bingqing Li, Yongming Wang, Tian Wang
Summary: Electrocatalytic oxidation (ECO) is a highly efficient and environmentally friendly method for water treatment. This study focuses on the preparation of high-performance anodes with long service lifetimes. Porous Ti/RuO2-IrO2@Pt, Ti/RuO2-TiO2@Pt, and Ti/Y2O3-RuO2-TiO2@Pt anodes were fabricated using modified micro-emulsion and vacuum impregnation methods. These anodes exhibited large electrochemically active areas and long service lives. The Ti/Y2O3-RuO2-TiO2@Pt anode showed the highest degradation efficiency for tetracycline and consumed the lowest energy.
Article
Electrochemistry
Isabelle M. D. Gonzaga, Aline R. Doria, Raira S. S. Castro, Michel R. R. Souza, Manuel A. Rodrigo, Katlin I. B. Eguiluz, Giancarlo R. Salazar-Banda
Summary: In this study, a highly efficient method for electrochemical oxidation of wastewater was found by preparing mixed metal oxide anodes with different coatings. The (RuO2)0.7(IrO2)0.3 anode showed the best performance, allowing for faster and more efficient oxidation of wastewater. This research is of significant importance for finding efficient and economically viable electrode materials as well as treating wastewater contaminated with pesticides.
ELECTROCHIMICA ACTA
(2022)
Article
Environmental Sciences
Aline R. Doria, Gessica O. S. Santos, Mariane M. S. Pelegrinelli, Deyvid C. Silva, Danielle B. de Matos, Eliane Bezerra Cavalcanti, Ronaldo S. Silva, Giancarlo R. Salazar-Banda, Katlin I. B. Eguiluz
Summary: In this study, binary and ternary mixed metal oxide anodes were prepared using conventional furnace and alternative CO(2) laser heating methods. The laser-made anodes showed a more compact morphology and improved service life compared to those made by conventional thermal decomposition. The ternary anode demonstrated higher kinetics, removal efficiency, and cost-effectiveness, making it a promising material for 4-nitrophenol oxidations.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Xianni Song, Xu Chen, Shuchi Zhang, Donglei Wu
Summary: The electrolytic process conditions for the electrochemical oxidation (EO) of composting leachate biochemical effluent (CLBE) were optimized using the response surface methodology (RSM). Comparative studies were conducted to investigate the failure characteristics of Ti/RuO2-IrO2 anodes in different electrolyte solutions. The optimization results showed a high removal rate for COD, NH3-N, and TN, and the failure mechanism of the Ti/RuO2-IrO2 anodes was clarified through electrochemical and material characterizations.
Article
Chemistry, Multidisciplinary
Jianjun Zhou, Tian Wang, Cheng Cheng, Fan Pan, Yunqing Zhu, Hongrui Ma, Junfeng Niu
Summary: In this study, Ti/RuO2-IrO2@Pt anodes with a strong metal-support interaction (SMSI) structure were successfully fabricated and exhibited improved degradation and mineralization efficiency of PFOA during electrochemical oxidation. Moreover, the service lifetime of the Ti/RuO2-IrO2@Pt anodes was significantly extended compared to commercial Ti/RuO2-IrO2 anodes.
Article
Environmental Sciences
Xu Zhu, Weiwu Hu, Chuanping Feng, Nan Chen, Hongyan Chen, Peijing Kuang, Yang Deng, Linlin Ma
Summary: The electrocatalytic properties of Ti/RuO2-SnO2 and Ti/RuO2-IrO2 anodes in different electrolytes were studied for aniline degradation. Ti/RuO2-SnO2 showed higher activity in Na2SO4 electrolyte, while Ti/RuO2-IrO2 was more effective in NaCl electrolyte. The presence of Fe2+ can decrease TOC removal efficiency, especially for Ti/RuO2-SnO2.
Article
Engineering, Chemical
Xingxin Liu, Chol Nam Song, Yuxin Zhang, Li Sha, Yiming Li, Shuting Zhang
Summary: This study systematically investigated the impact of coexisting ions in coking wastewater on chloride removal efficiency, as well as the optimization of process parameters for minimizing energy consumption while maximizing removal efficiency. Results demonstrated that various ions in coking wastewater could inhibit chloride removal through different mechanisms, and the calculated optimal process parameters were crucial for achieving maximum removal efficiency and minimum energy consumption.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Yeney Lauzurique, Sara Miralles-Cuevas, Mariel Godoy, Pamela Sepulveda, Soledad Bollo, Alejandro Cabrera-Reina, Cesar Huilinir, Sixto Malato, Isabel Oller, Ricardo Salazar-Gonzalez
Summary: The degradation of sulfamethoxazole (SMX) was studied using anodic oxidation (AO) with mixed metal oxide (MMO) electrodes with different Ru/Ir ratios. The electrode with the highest Ir composition showed the best degradation efficiency and was used to treat the antibiotic in natural water and wastewater effluents. The use of solar-assisted AO reduced electrolysis times and energy consumption.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Physical
Prangya P. Sahoo, Miroslav Mikolasek, Kristina Husekova, Edmund Dobrocka, Jan Soltys, Peter Ondrejka, Martin Kemeny, Ladislav Harmatha, Matej Micusik, Karol Frohlich
Summary: This study investigated the properties of metal-insulator-semiconductor (MIS) photoanodes with RuO2/SiO2/n-Si and IrO2-RuO2/SiO2/n-Si configurations for water oxidation. The results showed that both structures exhibited better oxygen evolution performance under acidic conditions compared to alkaline or near-neutral pH conditions.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yitao He, Yaohui Zhang, Zhihong Wang, Xifei Li, Zhe Lu, Xiqiang Huang, Zhiguo Liu
Summary: This study presents a solid-state anodic oxidation strategy for preparing an in situ protective film to enhance the cycle life of lithium metal anode. The in situ fluorinated protective film efficiently suppresses dendrite growth in lithium metal batteries and improves their cycling performance.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Environmental Sciences
Raira Souza de Santana Castro, Aline Resende Doria, Fabio Costa, Silvana Mattedi, Katlin Ivon Barrios Eguiluz, Giancarlo Richard Salazar-Banda
Summary: The development of efficient and economically viable anode technologies is crucial for treating water contaminated with complex organic pollutants. The use of ionic liquids as solvents in the production of anodes has emerged as a promising alternative, with the calcination temperature playing a decisive role in the anodes' durability and electrochemical properties. Anodes prepared with dipropyl ammonium butyrate (DPA-Bu) at 350 degrees C exhibit higher stability and improved results in terms of organic compound degradation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Ramin Norouzi, Mahmoud Zarei, Alireza Khataee, Masoud Ebratkhahan, Paria Rostamzadeh
Summary: In this study, the removal of fluoxetine through anodic oxidation process was investigated and optimized. The results showed that under the optimal conditions, the removal efficiency of FLX reached 96.25%.
ENVIRONMENTAL RESEARCH
(2022)
Article
Electrochemistry
Jingru Wang, Xuchen Ba, Zekun Zhao, Juan Wang, Qipeng Yang, Yijie Liu, Jiang Bo
Summary: A simple and environmentally friendly method was developed for thermally pretreating Ti substrate without the use of chemical reagents and wastewater discharge, resulting in improved stability and electrocatalytic activity of the Ti/reduced TiO2/RuO2-IrO2-SnO2-Sb2O5 anode. This method showed promising potential for upgrading DSA fabrication process in industrial applications.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Applied
Wentao Cheng, Yilin Liu, Li Wu, Rongsheng Chen, Jiaxin Wang, Shuai Chang, Feng Ma, Yang Li, Hongwei Ni
Summary: In this study, a novel composite catalyst RuO2/IrO2-TiO2 NTAs is proposed for industrial chlorine evolution reactions. The catalytic activity of this composite catalyst is superior to most materials used for CER, showing excellent stability and selectivity towards the oxygen evolution reaction.
Review
Environmental Sciences
Puthiya Veetil Nidheesh, Soliu O. Ganiyu, Carlos A. Martinez-Huitle, Emmanuel Mousset, Hugo Olvera-Vargas, Clement Trellu, Minghua Zhou, Mehmet A. Oturan
Summary: The electro-Fenton (EF) process is an effective electrochemical advanced oxidation process for wastewater treatment, but it has limitations for industrial-scale development. Recent research has focused on improving its effectiveness and relevance by modifying operating parameters, electrode material, reactor configuration, and coupling with other treatment methods. This review evaluates the current state of the EF process, presents the latest advances and emerging applications, and discusses the suitability of different modified or hybrid-EF processes based on their performance.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Electrochemistry
Mateus C. Medeiros, Suely S. L. Castro, Elisama dos Santos, Manuel A. Rodrigo, Carlos A. Martinez-Huitle
Summary: This study investigated the conversion of cashew nutshell waste into high value carboxylic acids through technical liquid. The effect of supporting electrolyte and t-CNSL concentrations was studied to determine the optimal formulation and operation conditions, resulting in a high yield of acetic acid.
ELECTROCHEMISTRY COMMUNICATIONS
(2022)
Article
Electrochemistry
Karla Caroline de Freitas Araujo, Elisama Vieira dos Santos, Mattia Pierpaoli, Mateusz Ficek, Jose Eudes L. Santos, Carlos A. Martinez-Huitle, Robert Bogdanowicz
Summary: The introduction of nanotechnology can enhance the synergic effects of electrocatalytic materials, increasing conversion yield in various applications. A new type of 3D-diamond electrode was developed with boron-doped carbon nanowalls using the CVD process, improving charge transfer and electrochemical performance. These diamond-carbon nanowall structures hold promise as novel electrocatalysts for catalytic applications in environmental and energy fields.
ELECTROCHIMICA ACTA
(2022)
Article
Environmental Sciences
Alana C. Crispim, Danyelle M. de Araujo, Carlos A. Martinez-Huitle, Fernanda L. Souza, Elisama Dos Santos
Summary: This study investigates the applicability of electro-Fenton (EF) and photoelectro-Fenton (PEF) processes for treating landfill effluent with high organic content. The results show that after 4 hours of operation at a current density of 90 mA cm(-2), the best efficiencies for removing organic matter (COD) were 66%, 68%, and 89% for EF, PEF-UVA, and PEF-UVC, respectively, with relatively low energy consumption.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Milad Mousazadeh, Zohreh Naghdali, Isik Kabdasli, Miguel A. Sandoval, Fatima Ezzahra Titchou, Farideh Malekdar, Mahmoud Nasr, Carlos A. Martinez-Huitle, Eric Lichtfouse, Mohammad Mahdi Emamjomeh
Summary: Forward osmosis is a water separation process that utilizes osmotic pressure to separate water from dissolved solutes. This study introduces a coupled electrochemical-physical process to treat forward osmosis reject water containing hexavalent chromium, achieving high removal efficiency and cost-effectiveness.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Environmental Sciences
Claudio M. de Castro, Paulo Olivi, Karla Caroline de Freitas Araujo, Inalmar D. Barbosa Segundo, Elisama dos Santos, Carlos A. Martinez-Huitle
Summary: This study developed a cheap method for water quality evaluation using smartphone applications and the HSV color model, which was validated to be reliable. The smartphone imaging-based method showed promising results in COD analysis, providing important technical support for achieving Sustainable Development Goals.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Chemical
Andrea N. Arias, Inalmar D. Barbosa Segundo, Elisama V. dos Santos, C. A. Martinez-Huitle, Justo Lobato, Manuel A. Rodrigo
Summary: This work demonstrates that treating hydrogen sulphide in gas phase using an electrochemical cell equipped with a MEA is a feasible option, as it efficiently transforms the pollutant into solid sulphur and sulfuric oxide. The current density and gas flowrate have significant effects on the removal of hydrogen sulphide and the formation of different species. Electrochemical characterization shows that the MEA does not deteriorate during continuous operation tests and the energy consumption for H2S removal ranges from 18 to 87 Wh gS-1.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Karla Caroline de Freitas Araujo, Emily Cintia Tossi de Araujo Costa, Danyelle Medeiros de Araujo, Elisama V. Santos, Carlos A. Martinez-Huitle, Pollyana Souza Castro
Summary: In the development of electrochemical sensors, carbon micro-structured or micro-materials have been widely used as supports/modifiers to improve the performance of bare electrodes. However, no attempts for electroanalytical determination of caffeine with CF microelectrode have been reported in the literature. Therefore, a homemade CF-microelectrode was fabricated and used to determine caffeine in soft beverage samples.
Review
Chemistry, Physical
Elisama Vieira dos Santos, Carlos A. Martinez-Huitle, Manuel A. Rodrigo
Summary: In recent years, efforts have been made to improve the sustainability of both industrial and environmental processes. The circular economy theory and life cycle assessment tools have led to innovative approaches in electrochemically assisted waste remediation technologies. This opinion-critical review summarizes the recent advancements in the new electro-refinery concept for organic wastes, which aims to obtain valuable compounds or molecules from pollutants instead of simply mineralizing them.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Electrochemistry
Herbet L. Oliveira, Thalita M. Barros, Jose E. L. Santos, Amanda D. Gondim, Marco A. Quiroz, Carlos A. Martinez-Huitle, Elisama V. dos Santos
Summary: This study demonstrates, for the first time, the simultaneous production of green hydrogen and carboxylic acids through the electrochemical treatment of washing machine effluent using a solar-powered polymer electrolyte membrane cell. By controlling the operating conditions, the researchers were able to regulate the formation of precursor-intermediates, oxidants, and & BULL;OH production, resulting in the formation of high value-added products and energy sources in the anodic and cathodic compartments. The technology proposed in this study may offer a promising and sustainable route towards achieving the United Nations' Sustainable Development Goals 6 and 7.
ELECTROCHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Maiara B. Ferreira, Elaine Cristina M. de Moura Santos, Jose H. Oliveira Nascimento, Felipe M. Fontes Galvao, Elisama Vieira dos Santos, Jose Eudes Lima Santos, Patricio J. Espinoza-Montero, Carlos A. Martinez-Huitle
Summary: The electrochemical oxidation (EO) technique was investigated for the treatment of textile effluents containing single dye and trichromy. The results showed that Ti/Pt-Sn-Sb anode exhibited better color removal and higher oxidant production compared to Ti/Pt anode, with lower energy consumption.
JOURNAL OF THE MEXICAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Environmental
Gleilson de F. Vieira, Inalmar D. Barbosa Segundo, Jose Eudes L. Santos, Amanda D. Gondim, Elisama V. dos Santos, Carlos A. Martinez-Huitle
Summary: The aim of ensuring water quality and wastewater treatment is emphasized in the sixth sustainable development goal (SDG6) set by the United Nations. Beauty salons (BS), as widely available services, generate effluents with potentially hazardous chemicals that require treatment before being discharged into the sewage system. This study presents a comprehensive characterization of a BS effluent and investigates its electrochemical treatment using boron-doped diamond (BDD) as the anode, stainless steel as the cathode, and NaCl and Na2SO4 as additional supporting electrolytes. The analysis of chemical oxygen demand (COD) removal and energy consumption shows that NaCl is more efficient than Na2SO4 in treating the BS effluent, exhibiting higher COD removal (70% compared to 64% at a current density of 10 mA cm-2), lower turbidity and color in the effluent, and a pH closer to neutral without the need for further correction before discharge. The study also identifies Si-based oxides as the cause of high turbidity in the raw effluent, which can be effectively treated using NaCl as the electrolyte. The proposed treatment method aligns with SDG6 and can serve as an alternative for decision-makers and governments in implementing better water sanitation policies.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Chemistry, Multidisciplinary
Alana Maria Nunes de Morais, Danyelle Medeiros Araujo, Inalmar Dantas Barbosa Segundo, Elisama Vieira dos Santos, Suely Souza Leal de Castro, Carlos A. Martinez-Huitle, Janete Jane Fernandes Alves
Summary: This study evaluated the performance of the electrochemical oxidation process in eliminating pesticides from water. The results showed that dimensionally stable anode and boron-doped diamond were effective anode materials for degrading the pesticide acetamiprid. Different current densities were tested, and it was found that higher removal efficiencies were achieved at specific current densities.
APPLIED SCIENCES-BASEL
(2023)
Review
Engineering, Chemical
Matheus Pimentel Prates, Suzana Maria de Oliveira Loures Marcionilio, Karine Borges Machado, Danyelle Medeiros de Araujo, Carlos A. Martinez-Huitle, Arizeu Luiz Leao Arantes, Jose Eduardo Ferreira da Silva Gadelha
Summary: This study evaluates the progress and trends of the implementation of the Fenton process in the treatment of wastewater. By conducting bibliometric research in two scientific databases, the study identifies a large number of publications related to the Fenton process and highlights China as the leading country in research on this topic.
Article
Multidisciplinary Sciences
Inalmar D. Barbosa Segundo, Jussara C. Cardozo, Pollyana Souza Castro, Amanda D. Gondim, Elisama V. dos Santos, Carlos A. Martinez-Huitle
Summary: In order to decentralize monitoring policies and facilitate the work of researchers in developing countries, this study presents a simple and rapid protocol for chemical oxygen demand (COD) analysis using smartphones with a camera. The method is calibrated based on theoretical values and achieves high accuracy for COD measurements. The smartphone protocol has the potential to replace expensive spectrophotometers and contribute to sustainable water sanitation management.
