Article
Chemistry, Physical
Woo Hyun Yun, Young Soo Yoon, Hyon Hee Yoon, Phan Khanh Thinh Nguyen, Jaehyun Hur
Summary: A cost-effective cathode material for microbial electrolysis cells was synthesized by surface modification of stainless steel mesh through anodization. The surface-modified stainless steel mesh exhibited a porous surface and higher specific surface area, leading to significantly increased hydrogen production. The performance of the modified stainless steel mesh was stable and comparable to that of Pt/C, showing potential for practical applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
Na Zhao, Dawei Liang, Hong Liu, Shujuan Meng, Xiaohu Li
Summary: MEC converts organics from wastewater to fuel-grade hydrogen, but long-term operation is hindered by deteriorating hydrogen recovery. This study presents a novel separator-electrode assembly design to effectively block hydrogen crossover and increase hydrogen recovery, achieving high current density and hydrogen production.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Yanhong Liu, Kewei Zhang, Dongxu Zhang, Weixuan Dong, Tianyao Jiang, Hongbo Zhou, Lixia Li, Baodong Mao
Summary: The study demonstrates that industrial 316L stainless steel meshes exhibit excellent electrocatalytic hydrogen evolution reaction (HER) activity in acidic conditions. The HER performance increases with the increase of mesh number up to a certain point, but starts to decrease when the mesh number goes beyond a certain threshold. The research provides valuable insights for improving the performance of low-cost industrial electrodes towards scalable electrocatalytic hydrogen production and renewable energy storage.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Biochemistry & Molecular Biology
Mengyao Cui, Wenzhi Gu, Xu Yang, Daping Li, Lixia Zhang, Nuan Yang, Xiaomei Wang, Guoqiang Zhan
Summary: This study established a microbial electrolysis cell for simultaneous anaerobic ammonium oxidation and organic matter removal, which achieved efficient removal of ammonium and carbon. Cyclovoltammetry and 16S rRNA gene analysis revealed the electrochemical activity of the anodic biofilm and the composition of the microbial community.
BIOELECTROCHEMISTRY
(2022)
Article
Engineering, Environmental
Xiang Lyu, Yaocai Bai, Jianlin Li, Runming Tao, Jun Yang, Alexey Serov
Summary: This study evaluated two commercially available stainless steel mesh substrates (316 SS and 304 SS) as electrodes for oxygen evolution reaction (OER) in natural seawater electrolysis. The results show that 304 SS is less stable against corrosion under neutral and low alkaline seawater electrolytes due to metal dissolution and chlorine evolution reaction (CER), while 316 SS outperforms 304 SS in terms of electrocatalytic activity and corrosion resistance. The performance of 304 SS is comparable to 316 SS under high alkaline seawater electrolyte, where CER and metal dissolution are suppressed by OER.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Electrochemistry
Santiago Cartagena, Franky E. Bedoya-Lora, Jorge A. Calderon
Summary: This work demonstrates the synthesis of amorphous NiFeP catalysts for electrochemical water splitting using a simple and scalable electrodeposition method. The electrodes supported on pretreated substrates exhibit low overpotentials and high stability, showing great potential for sustainable energy storage in alkaline electrolyzers.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Engineering, Environmental
Xiang Lyu, Jianlin Li, Charl J. Jafta, Yaocai Bai, Camila P. Canales, Fridrik Magnus, Arni S. Ingason, Alexey Serov
Summary: In this study, the substrates for oxygen evolution reaction (OER) electrocatalysts in alkaline seawater electrolysis were investigated. It was found that the performance of stainless-steel mesh (SS mesh) was superior to that of Ni foam in terms of overpotentials and Tafel slopes, and it exhibited excellent stability. Interestingly, the performance of SS mesh even outperformed various non-noble metal electrocatalysts and was comparable to commercial RuO2 and IrO2. The corrosion conditions of Ni foam and SS mesh electrodes were also studied.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Yanfeng Tai, Lingjun Wang, Zhenzhen Hu, Yan Dang, Yali Guo, Xiaonan Ji, Wei Hu, Min Li
Summary: This study investigated the method and effectiveness of phosphorus recovery from wastewater using microbial electrolysis cell (MEC). The results showed that by adjusting factors such as applied voltage, NaAc concentration, Mg/P molar ratio, N/P molar ratio, and initial P concentration, efficient phosphorus recovery and high-purity products could be achieved. The study also found that increasing the applied voltage, N/P molar ratio, and initial P concentration could improve phosphorus recovery efficiency, while the purity of the product was correlated with applied voltage, Mg/P molar ratio, N/P molar ratio, and initial P concentration.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Zhihao Gong, Han Wang, Dimitris V. Vayenas, Qun Yan
Summary: In this study, algal biochar was used as a cathodic electrode in an electro-Fenton system to successfully degrade sulfadiazine. The use of algal biochar resulted in efficient removal of sulfadiazine, with H2O2 playing a crucial role in the degradation process. Four possible degradation pathways of sulfadiazine were proposed, and the biotoxicity of the degradation products on fish and green algae was evaluated.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Azeem Mushtaq, Hoon Cho, Hoyoung Ryu, Muhammad Ajaz Ahmed, Muhammad Saif Ur Rehman, Jong-In Han
Summary: This study demonstrates the fabrication of a metallic electro-conductive membrane with high conductivity and mechanical strength, as well as good filtration performance and anti-fouling capability, through simple filtration technique.
Article
Environmental Sciences
Yijie Liu, Jingli Wu, Jinghua Chen, Shuliang Liu, Hao Xu, Qipeng Yang, Fengqi Xu, Yu Guo, Bo Jiang
Summary: An energy-efficient divided bipolar electrolysis system was developed for water softening using PTFE membranes and a bipolar electrode. The system showed promising calcium hardness removal efficiencies in different operation modes with various current densities. The optimized Ca2+/HCO3- molar ratio and flow rate were determined for effective calcium hardness removal. This electrochemical water softening system has great potential for industrial applications.
Review
Energy & Fuels
Sung-Gwan Park, P. P. Rajesh, Young-Uk Sim, Dipak A. Jadhav, Tabish Noori, Dong-Ho Y. Kim, Siham Y. Al-Qaradawi, Euntae Yang, Jae-Kyung Jang, Kyu-Jung Chae
Summary: This review mainly focuses on the improvements and cheaper novel alternatives of electrode materials for bioelectrohydrogenesis using a microbial electrolysis cell (MEC) to enhance its performance and overcome scale-up challenges.
Article
Engineering, Environmental
Dilan Akagunduz, Rumeysa Cebecioglu, Murat Ozdemir, Tunc Catal
Summary: The study showed that a mixture of paroxetine, venlafaxine, and ODV at lower concentrations could lead to hydrogen and methane generation in single-chamber microbial electrolysis cells (MECs) while removing up to 99% of the drugs.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
M. I. Jaramillo-Gutierrez, S. M. Sierra-Gonzalez, C. A. Ramirez-Gonzalez, J. E. Pedraza-Rosas, J. A. Pedraza-Avella
Summary: This study analyzed the effects of time, potential, and Ni2+ concentration on the amount of nickel deposited and hydrogen produced during electrodeposition and electrolysis using nickeled electrodes. The highest weight of nickel coating and hydrogen production were achieved under specific conditions, with morphological and elemental analyses revealing key characteristics of the electrodes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Seyedabbas Rasouli, Nima Rezaei, Sohrab Zendehboudi, Xili Duan, Raymond L. Legge, Ioannis Chatzis
Summary: The development of continuous oil-water separation processes is important for industrial wastewater treatment. In this study, a superhydrophobic-superoleophilic (SHSO) membrane was used to investigate oil-water separation efficiency. The effects of flow rate and oil concentration on separation efficiency were studied, and the as-prepared SHSO membrane showed high separation performance.
