Article
Environmental Sciences
Pradip Saha, Jiamin Wang, Yinong Zhou, Livio Carlucci, Adriaan W. Jeremiasse, Huub H. M. Rijnaarts, Harry Bruning
Summary: Electrochemical oxidation is an effective technique for treating persistent organic pollutants. This study investigated the influence of electrolyte composition on the formation of active sulfate species, degradation of a model organic compound, and distribution of chlorinated by-products. The results showed that sulfate-enriched electrolyte compositions were beneficial for the electrochemical oxidation of biorecalcitrant organic pollutants.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
Yi Xu, Shijie Liu, Jonathan P. Edwards, Yurou Celine Xiao, Yong Zhao, Rui Kai Miao, Mengyang Fan, Yuanjun Chen, Jianan Erick Huang, Edward H. Sargent, David Sinton
Summary: Direct air capture (DAC) is a potential method for mitigating and offsetting carbon emissions, but current regeneration techniques have energy consumption and emissions issues. This study presents a low-temperature electrochemical process to regenerate capture liquids using alternating electrocatalysis, reducing energy consumption and emissions.
Article
Engineering, Environmental
Kewang Liu, Yuying Yi, Naidong Zhang
Summary: This report describes an efficient strategy for removing organic pollutants in oilfield wastewater using an electrochemical method, which can generate ferrate to aid in waste recycling.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Chemistry, Organic
Nicholas R. Deprez, Dane J. Clausen, Jia-Xuan Yan, Feng Peng, Shaoguang Zhang, Jongrock Kong, Yanguang Bai
Summary: This study presents an effective method for the selective oxidation of pyrrolidines to pyrrolidinones, showing high selectivity and functional group compatibility. It demonstrates the use of an operationally simple ElectraSyn 2.0 and cost-effective stainless-steel electrode for this electrochemical oxidation process.
Article
Nanoscience & Nanotechnology
Heng Dong, Xiaohan Shao, Shane Hancox, Sean T. McBeath, William A. Tarpeh, Michael R. Hoffmann
Summary: This study compares the chlorine evolution reaction (CER) catalytic activities of a series of anode samples with different Sb/Co ratios using scanning electrochemical microscopy, demonstrating that Sb sites exhibit higher catalytic activity and the Sb/Co ratios affect the CER selectivity. The high activity of Sb sites highlights the significance of electronic polarization in changing the oxidation states of Co and Sb.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Minhan Li, Yuanyuan Ma, Jun Chen, Robert Lawrence, Wei Luo, Marco Sacchi, Wan Jiang, Jianping Yang
Summary: In this study, a chlorine-doped porous copper electrocatalyst with high C2+ Faradaic efficiency was developed, showing outstanding catalytic stability over a long-term period. The stable cationic Cu-0/Cu+ species induced by chlorine and the well-preserved structure with abundant active sites were found critical to achieving high FE of C2+ in electrochemical CO2 reduction over time.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Analytical
Isac Abdulgani, Florymar Escalona-Duran, Danyelle M. A. de Araujo, Elisama V. dos Santos, Inalmar D. Barbosa Segundo, Carlos Martinez-Huitle
Summary: Anodic oxidation with a Ti/IrO2-Ta2O5 electrode was used to efficiently treat produced water, achieving the highest organic removal efficiency under specific current density and without pH adjustment. The high concentration of chloride in the effluent favored the production of oxidant species, while the high sulfate concentration did not significantly affect the oxidation of organic matter.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Environmental
Iman El Gheriany, Mohamed Helmy Abdel-Aziz, El-Sayed Zakaria El-Ashtoukhy, Gomaa H. Sedahmed
Summary: Chlorine-mediated electrochemical urea oxidation was investigated using a new electrochemical cell design with horizontally oriented electrodes. The experimental results showed that the current density, pH, NaCl concentration, and initial urea concentration had significant effects on the urea removal and energy consumption. The kinetic and statistical modeling methods were used to optimize the process variables and achieve high urea removal efficiency with low energy consumption.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Engineering, Environmental
Qiangang Li, Guo-hua Liu, Sizhe Chen, Lu Qi, Hongchen Wang
Summary: Chlorine-mediated electrochemical advanced oxidation (Cl-EAO) is a promising method for ammonia removal from wastewater. This study investigates the role of active chlorine and chlorine radicals in the Cl-EAO process using carbonate ion (Na2CO3). The results show that while active chlorine production has little effect on ammonia oxidation, chlorine radicals (Cl· and ClO·) are the main contributors. The ammonia oxidation process in this system follows zero-order kinetics and is revisited based on the findings of this study.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Camilla Russo, Matthew C. Leech, Jamie M. Walsh, Joe I. Higham, Lisa Giannessi, Emmanuelle Lambert, Cyrille Kiaku, Darren L. Poole, Joseph Mason, Charles A. I. Goodall, Perry Devo, Mariateresa Giustiniano, Marco Radi, Kevin Lam
Summary: Hydrogenation reactions are commonly used in various scientific fields for the synthesis of pharmaceuticals, natural products, and functional materials. However, the use of toxic and expensive catalysts in these reactions often leads to impractical, hazardous, and limited conditions. This article presents a new, general, practical, efficient, mild, and high-yielding hydrogen-free electrochemical method for reducing alkene, alkyne, nitro, and azido groups. Furthermore, this method has been successfully applied in deuterium labelling.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Hao Jiang, Lizhang Wang, Bai Gao, Yiran Li, Yadan Guo, Mengning Zhuo, Kaixuan Sun, Binyu Lu, Meiyu Jia, Xiaoxia Yu, Huidong Wang, Yongge Li
Summary: Utilizing OH- oxidation as a counter reaction to CO2 electroreduction can increase formate production rate and faradic efficiency. Alkaline anolyte helps stabilize catholyte pH, avoiding competitive hydrogen evolution reaction, and has the lowest power consumption compared to other anolytes.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Environmental Sciences
Ivan Lozano, Carlos J. Perez-Guzman, Abrahan Mora, Jurgen Mahlknecht, Claudia Lopez Aguilar, Pabel Cervantes-Aviles
Summary: Pharmaceutical and personal care products (PPCPs) are emerging contaminants with adverse effects on organisms and human health. Electrochemical Advanced Oxidation Processes (EAOPs) are effective in removing PPCPs. Antibiotics, anti-inflammatory, and antifungal compounds are the main categories of PPCPs detected. Further research is needed to understand the removal of PPCPs under realistic conditions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Farshid Ghanbari, Ali Yaghoot-Nezhad, Stanislaw Waclawek, Kun-Yi Andrew Lin, Jorge Rodriguez-Chueca, Fayyaz Mehdipour
Summary: The degradation of acetaminophen was comparatively studied using UV/chlorine and UV/H2O2 systems. The primary oxidizing species in ACM removal were hydroxyl radicals in the UV/H2O2 process, while reactive chlorine species played a pivotal role in the UV/chlorine process. The use of higher amounts of oxidants led to a significant increase in ACM degradation rate in both processes within 25 minutes.
Article
Chemistry, Multidisciplinary
Jianwei Zhang, Biswanath Das, Oscar Verho, Jan-E Backvall
Summary: Here we describe an electrochemical oxidative palladium-catalyzed carbonylation-carbocyclization reaction for the synthesis of gamma-lactones and spirolactones, exhibiting excellent chemoselectivity. Interestingly, electrocatalysis was found to enhance the reaction rate of the tandem process, leading to a more efficient reaction compared to chemical redox conditions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Xuelan Hou
Summary: This article discusses the clarity of the reported active area of anodic TiO2 nanotube (TNT) electrodes in photoelectric and electrochemical energy storage devices. In different applications, the sizes of the titanium metal substrate, anodic TNT, and electrode's active area are often misunderstood. Clarifying these three sizes is important for both academic research and commercialization.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Environmental Sciences
Miguel Angel Lopez Zavala, Eunice Espinoza Estrada
Article
Environmental Sciences
Miguel Angel Lopez Zavala, Jorge Isidro Ramos Patlan
Article
Environmental Sciences
Miguel Angel Lopez Zavala, Ricardo Castillo Vega, Rebeca Andrea Lopez Miranda
Article
Engineering, Environmental
Miguel Angel Lopez Zavala, Monica Jose Cruz Prieto, Cristina Alejandra Rojas Rojas
WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY
(2018)
Article
Energy & Fuels
Miguel Angel Lopez Zavala, Pamela Renee Torres Delenne, Omar Israel Gonzalez Pena
Article
Engineering, Environmental
Miguel Angel Lopez Zavala, Camila Renee Jaber Lara
ENVIRONMENTAL ENGINEERING SCIENCE
(2018)
Article
Environmental Sciences
Thalia Turren-Cruz, Juan Alejandro Garcia-Rodriguez, Miguel Angel Lopez Zavala
Article
Engineering, Chemical
S. Alejandro Lozano-Morales, Graciela Morales, Miguel Angel Lopez Zavala, Augusto Arce-Sarria, Fiderman Machuca-Martinez
Article
Energy & Fuels
Miguel Angel Lopez Zavala, Omar Israel Gonzalez Pena, Hector Cabral Ruelas, Cristina Delgado Mena, Mokhtar Guizani
Article
Green & Sustainable Science & Technology
Thalia Turren-Cruz, Juan Alejandro Garcia-Rodriguez, Rodrigo E. Peimbert-Garcia, Miguel Angel Lopez Zavala
Article
Engineering, Environmental
Miguel Angel Lopez Zavala, Hector Romero-Santana, B. E. Monarrez-Cordero
JOURNAL OF WATER PROCESS ENGINEERING
(2020)
Article
Environmental Sciences
Miguel Angel Lopez Zavala, Diego Angles Vega
Summary: Stainless-steel electrodes were used to effectively oxidize naproxen and its transformation products in surface water in short reaction times. Results showed that degradation rates of naproxen were greater and reaction times were shorter compared to other studies. High current densities, high chloride concentrations, and low pH conditions were found to result in faster oxidation of naproxen and its transformation products.
Article
Materials Science, Ceramics
Miguel Angel Lopez Zavala, Bernardo Frias Bouchez
Summary: Ceramic membranes made of montmorillonite, perlite and iron were used to remove As(III) from water. The addition of iron enhanced the adsorption/removal capacity of the membranes for As(III) as well as the removal of other ions, turbidity, and electrical conductivity.
CERAMICS INTERNATIONAL
(2022)
Article
Biotechnology & Applied Microbiology
Fatima Borja-Maldonado, Miguel Angel Lopez Zavala
Summary: Graphite, graphene, and hydrophilic-treated graphene electrodes were compared in a dual-chamber microbial fuel cell (DC-MFC). The use of hydrophilic-treated graphene electrodes and hydrochloric acid as a catholyte resulted in the highest power density of 32.07 mW.m(-2), which was significantly higher than that of graphene and graphite. The use of hydrophilic-treated graphene electrodes also showed high organic matter removal efficiencies.
BIOENGINEERING-BASEL
(2023)
Article
Multidisciplinary Sciences
Miguel Angel Lopez Zavala, Diego Angles Vega, Jose Manuel Alvarez Vega, Odwer Francisco Castillo Jerez, Rodrigo Alejandro Cantu Hernandez