Article
Environmental Sciences
Enas M. Abou-Taleb, Mohamed S. Hellal, Kholod H. Kamal
Summary: This study demonstrated that electro-oxidation is effective in removing phenol and organic matter from petroleum wastewater, with high removal rates and cost-effectiveness.
WATER AND ENVIRONMENT JOURNAL
(2021)
Review
Chemistry, Applied
Yun Jeong Choe, Jongsik Kim, Ji Young Byun, Sang Hoon Kim
Summary: An electro-Fenton system with magnetite coated stainless steel mesh as cathode was developed and tested for removing methylene blue in wastewater. By coating magnetite particles on the surface of the mesh, catalytic activation of in situ produced H2O2 was enhanced, leading to better degradation efficiency of methylene blue in neutral conditions compared to acidic conditions.
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.
Review
Chemistry, Physical
Jose de Jesus Trevino-Resendez, Alejandro Medel, Yunny Meas
Summary: This review focuses on recent developments in electrochemical technology (with special emphasis on electrocoagulation, electro-oxidation, and electro-Fenton) to treat petroleum industry effluents, including offshore and hydraulic fracturing extraction, as well as refinery effluents. Additionally, an overview is given of the challenges these processes face in becoming consolidated technologies.
CURRENT OPINION IN ELECTROCHEMISTRY
(2021)
Article
Engineering, Environmental
Haibo Chen, Gen Yoshida, Fetra J. J. Andriamanohiarisoamanana, Ikko Ihara
Summary: This research focused on the degradation of biorefractory food colorant caramel using the electro-oxidation combined with electro-Fenton process with boron-doped diamond electrodes. The results showed that the EO + EF process with BDD electrodes was able to efficiently decolorize the caramel colorant under certain experimental conditions.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Mechanical
Maarten Nagels, Brent Verhoeven, Nicolas Larche, Raf Dewil, Barbara Rossi
Summary: This study examines the corrosion of lean duplex stainless steel alloys when used as construction materials in advanced oxidation processes. Electrochemical and immersion experiments were conducted using wastewater subjected to ozone or Fenton oxidation. The results of the electrochemical experiments show that the presence of dissolved ozone does not increase pitting susceptibility for any of the alloys tested. However, the application of Fenton reagents induces pitting corrosion in the studied lean duplex alloys. The immersion experiments demonstrate that crevice corrosion occurs during wastewater treatment with both ozone and Fenton reagents.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Engineering, Environmental
Yanghua Duan, Wenli Jiang, David L. Sedlak
Summary: Low-cost stainless-steel electrodes can efficiently activate hydrogen peroxide (H2O2) by producing hydroxyl radicals (•OH) and other oxidants. These electrodes demonstrate significantly higher •OH yield compared to iron oxide catalysts under circumneutral pH conditions. The stainless-steel electrodes effectively remove trace organic contaminants from water without leaching significant amounts of Fe and Cr. With further development, they could become a cost-effective alternative to other H2O2 activation processes like ultraviolet light.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Ghazi F. Khaleel, Ibrahim Ismail, Ali H. Abbar
Summary: The treatment of wastewater from petroleum refineries is crucial for environmental protection. This study investigated the solar photo-electro-Fenton (SPEF) process for reducing the chemical oxygen demand (COD) in the effluent from the Bijee petroleum refinery plant in Iraq. The experimental results showed that Fe2+ concentration had the greatest impact on COD removal efficiency, accounting for 47.7%. This was followed by current density at 18.26% and the addition of NaCl at 11.20%. The optimized conditions were an initial pH of 3, current density of 10 mA/cm2, Fe2+ concentration of 0.8 mM, NaCl addition of 0.747 g/L, and a duration of 87 minutes, resulting in a COD removal efficiency of 93.20% and an energy consumption of 15.97 kWh/kg COD.
Article
Engineering, Environmental
Tutuk Djoko Kusworo, Andri Cahyo Kumoro, Dani Puji Utomo
Summary: The treatment of petroleum refinery wastewater is crucial for environmental and human health, and in this study, membranes with a PVA coating were fabricated to improve the removal of phenolic compounds and ammonia. The coated membranes showed enhanced surface properties, mechanical strength, and excellent removal efficiency of phenol and ammonia. Despite a decrease in permeate flux with increased PVA concentration, the antifouling behavior of the membrane was significantly improved, showing great potential for petroleum wastewater treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Matej Klas, Peter Cermak, Arian Fateh Borkhari, Leonid Satrapinskyy, Stefan Matejcik, Branislav Radjenovic, Marija Radmilovic-Radjenovic
Summary: This study examines the variation of physical properties of vacuum breakdown in microgaps under different pulsed electric field conditions. Through analysis and calculation of multiple pre-breakdown stages, the dominant mechanism of electron emission was determined.
Review
Materials Science, Multidisciplinary
L. Romero-Resendiz, M. El-Tahawy, T. Zhang, M. C. Rossi, D. M. Marulanda-Cardona, T. Yang, V. Amigo-Borras, Y. Huang, H. Mirzadeh, I. J. Beyerlein, J. C. Huang, T. G. Langdon, Y. T. Zhu
Summary: This paper reviews the microstructural aspects, properties, and processing-microstructure-properties relationship of heterostructured stainless steel (HS SS), and discusses the multi-disciplinary perspectives.
MATERIALS SCIENCE & ENGINEERING R-REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Kaiwen Ren, Shuo Liu, Zhiyu Dong, Junfeng Wang
Summary: A FeMnCe-activated semi-coke catalyst (FeMnCe/ASC) was prepared using semi-coke as the raw material. The structure and morphology of the catalyst were characterized, and its catalytic activity and stability were investigated. Under the optimal conditions, the degradation rates of ammonia nitrogen and COD reached 100%, and even after five times of recycling, the degradation rates still remained above 90%. The mechanism and pathway of piperazine degradation were also evaluated.
Article
Chemistry, Physical
R. P. H. Jong, E. Dubbelman, G. Mul
Summary: The performance of Pd-functionalized titanium hollow fibre electrodes in the electro-oxidation of propylene was investigated. The pH and applied potentials significantly affected the product distribution, with Pd dissolution and PdO2 formation playing important roles.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Abdulcabbar Yavuz, Kaan Kaplan, Metin Bedir
Summary: This study demonstrates the fabrication of flexible electrodes with high specific capacitance and mechanical stability by electrochemically coating copper on a stainless steel mesh. The copper oxide in the electrode showed good electrochemical performance in an alkaline electrolyte. The experimental results suggest that the flexible copper-coated mesh electrode has potential applications in the field of electrochemical supercapacitors.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
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.
