Article
Chemistry, Multidisciplinary
Neethu Christudas Dargily, Giddaerappa Kuntoji, Rahul Mahadeo Mendhe, Akshay Haridas, Ravikumar Thimmappa, Surbhi Sharma, Musthafa Ottakam Thotiyl
Summary: This study presents a concept of a zinc-air battery where the in situ transformation of hydrogen peroxide produced on battery discharge to highly reactive hydroxyl radicals is used for pollutant degradation and electric power production.
Article
Engineering, Environmental
Anliu Wang, Ying Jiang, Yiqi Yan, Lingjun Bu, Zongsu Wei, Richard Spinney, Dionysios D. Dionysiou, Ruiyang Xiao
Summary: This study investigates the degradation kinetics of a target micropollutant in an EF system and elucidates the contribution of different subprocesses. The results show that radical oxidation and electrode oxidation/reduction are the major contributors to degradation. This research not only enhances our understanding of the synergistic effect in EF systems but also provides possibilities for optimizing these techniques for scalability.
Article
Engineering, Environmental
Jawer David Acuna-Bedoya, Jair Fernando Rangel-Sequeda, Margarita Loredo-Cancino, Maria de Lourdes Maya-Trevino, Laura Patricia Dominguez-Jaimes, Juan Manuel Hernandez-Lopez
Summary: A three-dimensional electrode reactor (3DER) using 3D printed activated carbon monoliths as a third electrode was developed for the degradation of recalcitrant pharmaceutical compounds. The 3DER system showed higher degradation and mineralization percentages compared to a system without a third electrode. The integrated adsorption-oxidation technology also achieved higher degradation compared to sequential processes. The study evaluated operating parameters and tested the regeneration of the activated carbon monoliths. The energy consumption was significantly reduced in the 3DER system.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Weilu Yang, Nihal Oturan, Jialin Liang, Mehmet A. Oturan
Summary: This study investigated the efficiency of the electro-Fenton (EF) process with a boron-doped diamond (BDD) anode and an electrochemically exfoliated graphene-based cathode (EEGr) for the removal of ofloxacin (OFLO) from contaminated water. The EF-BDD process improved the decay kinetics of OFLO by 1.4-2.6 times and reduced disposal costs by 28%-41% compared to the anodic oxidation (AO) process with BDD anode. The simultaneous generation of homogeneous (center dot OH) and heterogeneous (BDD(center dot OH)) hydroxyl radicals in the EF-BDD process contributed to its superior performance for mineralization of OFLO. The EF-BDD process showed potential for the oxidative degradation of OFLO and other antibiotic organic pollutants.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Xin Zhang, Riying Qi, Kuichuan Sheng, Hongjian Lin
Summary: Electrochemical sulfide oxidation is a promising method for removing sulfide from wastewater or biogas. In this study, nickel phosphide was electrodeposited on stainless steel to form an anode catalyst (SS/Ni-P). The SS/Ni-P catalyst showed high efficiency in sulfide removal, achieving a removal efficiency of 95.00 +/- 3.55 % within 48 hours, which was significantly higher than other anodes.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Chemical
Sundus H. Yousif, Ghassan H. Abdullah
Summary: An advanced oxidation process using electro-Fenton technology is proposed to remove phenol from wastewater. H2O2 is electroproduced and used to oxidize phenol, resulting in a conversion efficiency of 98.65%. The process is cost-effective, scalable, and multiuse, and has potential applications in various industrial processes.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Environmental Sciences
Ozkan Gormez, Sema Akay, Belgin Gozmen, Berkant Kayan, Dimitrios Kalderis
Summary: The degradation of emerging contaminant coumarin was investigated using anodic, electro-Fenton, and subcritical water oxidation processes. Results showed that the anodic and electro-Fenton oxidation achieved 99% degradation of coumarin at 200 mA constant current, while subcritical water oxidation achieved the highest degradation of 88% at 200°C with 150 mM H2O2 and after 37.5 mM treatment. Time was found to have a minor positive effect on coumarin degradation, indicating that it is not the most influential parameter.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Fatima Ezzahra Titchou, Hicham Zazou, Hanane Afanga, El Gaayda Jamila, Rachid Ait Akbour, Mohamed Hamdani, Mehmet A. Oturan
Summary: This study compared the efficiency of different treatment methods for removing Direct Red 23 from wastewater, finding varying removal effects in different electrolytes, with the use of a mixed supporting electrolyte leading to enhanced TOC removal efficiency.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
Xiaotian Liu, Yuran Yang, Feng Duan, Jinyu Wen, Xijun Wei, Yujie Huang, Bi Jia, Gaili Ke, Huichao He, Yong Zhou
Summary: An alkaline electro-Fenton process has been proposed in this study, which involves the synthesis of H2O2 in KHCO3 electrolyte using an In2O3 film anode and activation of H2O2 into OH via MnO2 powder, aiming to effectively treat alkaline organic wastewater.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Xiaoqi Shi, Saier Liu, Chuansong Duanmu, Minjing Shang, Min Qiu, Chong Shen, Yong Yang, Yuanhai Su
Summary: In this study, phenol was successfully synthesized through photooxidation, reaching a high yield of 94% and selectivity over 99% under optimized conditions. The photomicroreactor with blue LEDs as an eco-friendly light source demonstrated significant advantages, while a reaction kinetic model was established to further understand the photooxidation mechanism.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Iva Tews, Aidan Garcia, Michael Ayiania, Sohrab Haghighi Mood, Kalidas Mainali, Jean-Sabin McEwen, Manuel Garcia-Perez
Summary: Catalytic wet oxidation is a promising technology for treating liquid wastes from biomass conversion processes, and nitrogen-doped char catalysts can lower the activation energy in the process, accelerating the oxidation of phenol.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Chemistry, Multidisciplinary
Takashi Yamamoto, Tsuyoshi Saitoh, Yasuaki Einaga, Shigeru Nishiyama
Summary: Natural products have played a significant role in drug discovery and organic chemistry development, with electrochemical reactions being investigated as a key step for natural product synthesis. Electro-organic synthesis allows for control of substrate reactivity by tuning electrolysis conditions, leading to the formation of important frameworks like diaryl ether, spirodienone, and spiroisoxazoline through anodic oxidation of phenol compounds.
Article
Engineering, Chemical
Kaixuan Wang, Xin Qin, Peike Cao, Shuo Chen, Hongtao Yu, Xie Quan
Summary: An integrated electrocatalytic process combining electrochemical anodic oxidation (AO) with cathodic electro-Fenton (EF) was proposed to boost refractory pollutant removal over a broad pH range. The process showed high efficiency and stability in actual wastewater treatment, meeting the discharge standard for sewage treatment plants in China.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Environmental
Faidzul Hakim Adnan, Steve Pontvianne, Marie-Noelle Pons, Emmanuel Mousset
Summary: For the first time, the effects of submillimetric interelectrode distances and electrogenerated gas on cathodic mineral electro-precipitation have been investigated. The study found that decreasing interelectrode distance leads to more mineral scaling, while the applied cathode potential and gas production also play important roles.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Electrochemistry
Faidzul Hakim Adnan, Emmanuel Mousset, Steve Pontvianne, Marie-Noelle Pons
Summary: This study presents for the first time the occurrence and modelling of cathodic mineral electro-precipitation in microfluidic thin-film configuration of electrochemical advanced oxidation process (EAOP), revealing that local alkalization on cathode surface is mainly due to water reduction rather than dissolved O-2 reduction. Electromigration phenomenon can be neglected when varying ionic strength, while diffusion is the kinetic rate-limiting step.
ELECTROCHIMICA ACTA
(2021)
Article
Engineering, Chemical
Fernando Ramirez-Correa, Miguel Angel Gomez-Garcia, Izabela Dobrosz-Gomez, Carlos Alberto Rojas-Sierra
CHEMICAL ENGINEERING SCIENCE
(2020)
Article
Electrochemistry
Izabela Dobrosz-Gomez, Miguel angel Gomez Garcia, Guillermo H. Gaviria, Edison GilPavas
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2020)
Article
Chemistry, Physical
Santiago Zuluaga-Botero, Izabela Dobrosz-Gomez, Miguel-Angel Gomez-Garcia
Article
Environmental Sciences
Izabela Dobrosz-Gomez, Miguel-Angel Gomez-Garcia
Summary: The study successfully examined a sequential Electro-Coagulation-Anodic Oxidation (EC-AO) process for treating soluble coffee industrial effluent, achieving good decolorization and pollutant removal effects. The treated effluent meets the Colombian legislation requirements.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Izabela Dobrosz-Gomez, Miguel-Angel Gomez-Garcia, Jacek Michal Rynkowski
Summary: The chemical incorporation of ZrO2 into the lattice of CeO2 significantly changed the texture and morphology of the mixed oxides, enhancing their adsorptive and desorptive properties. The efficiency of Cr(VI) removal depended on the Ce/Zr molar ratio.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Edison GilPavas, Izabela Dobrosz-Gomez, Miguel-Angel Gomez-Garcia
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2020)
Article
Engineering, Chemical
Juan Carlos Ojeda Toro, Izabela Dobrosz-Gomez, Miguel Angel Gomez-Garcia, Joana Prat, Immaculada Massana
Summary: This study analyzed the oscillatory behavior of a continuous ethanol fermentor under high feed sugar concentration using bifurcation theory. The model parameters were linked to the oscillatory behavior, revealing a rich bifurcation topology. It was found that in certain conditions, periodic/bifurcation behavior leads to higher ethanol productivity compared to steady-state.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Chemistry, Physical
Jesus David Quintero-Arias, Izabela Dobrosz-Gomez, Hugo de Lasa, Miguel-angel Gomez-Garcia
Summary: This study analyzes and designs a liquid phase esterification process using reactive pervaporation to convert acetic acid and isoamyl alcohol into isoamyl acetate with the help of a catalyst. By coupling a catalytic reactor with a separation membrane unit, the chemical reaction equilibrium is shifted towards the desired product by removing water. Through simulations and design charts, it is predicted that the integrated plug flow reactor-pervaporation reactor provides the best performance, with optimum ester yields as high as 0.94.
Review
Chemistry, Physical
Izabela Dobrosz-Gomez, Miguel-angel Gomez-Garcia, Jacek Michal Rynkowski