Ruggero Rossi, Joseph Nicolas, Bruce E. Logan

Journal of Power Sources • 2023

Kyoung‐Yeol Kim, Susan E. Habas, Joshua A. Schaidle et al.

Bioresource Technology • 2019

Dina Aboelela, M.A. Soliman

Journal of King Saud University - Engineering Sciences • 2022

This work used a unified dynamic model of microbial fuel cells (MFCs) and microbial electrolysis cells (MECs) that were combined to create MFC-powered MECs. This allowed for a completely sustainable and green system of hydrogen production and wastewater treatment. The main advantage that was envisioned for this coupled system was the elimination of the need for an external power source; the only feed to the system was the wastewater itself. We present the results of parameter estimation and model validation. The results showed the importance of minimizing internal resistance to increase hydrogen production. Better powering of MECs was achieved by setting MFCs in series rather than in parallel.

Xiaohu Li, Ruizhe Zhang, Yawei Qian et al.

Bioresource Technology • 2017

Bharath Gandu, Shmuel Rozenfeld, Lea Ouaknin Hirsch et al.

Journal of Power Sources • 2020

Kyoung‐Yeol Kim, Wulin Yang, Bruce E. Logan

Environmental Science & Technology • 2018

While nickel is a good alternative to platinum as a catalyst for the hydrogen evolution reaction, it is desirable to reduce the amount of nickel needed for cathodes in microbial electrolysis cells (MECs). Activated carbon (AC) was investigated as a cathode base structure for Ni as it is inexpensive and an excellent adsorbent for Ni, and it has a high specific surface area. AC nickel-functionalized electrodes (AC-Ni) were prepared by incorporating Ni salts into AC by adsorption, followed by cathode fabrication using a phase inversion process using a poly(vinylidene fluoride) (PVDF) binder. The AC-Ni cathodes had significantly higher (∼50%) hydrogen production rates than controls (plain AC) in smaller MECs (static flow conditions) over 30 days of operation, with no performance decrease over time. In larger MECs with catholyte recirculation, the AC-Ni cathode produced a slightly higher hydrogen production rate (1.1 ± 0.1 L-H 2 /L reactor /day) than MECs with Ni foam (1.0 ± 0.1 L-H 2 /L reactor /day). Ni dissolution tests showed that negligible amounts of Ni were lost into the electrolyte at pHs of 7 or 12, and the catalytic activity was restored by simple readsorption using a Ni salt solution when Ni was partially removed by an acid wash.

Fujian Li, Weifeng Liu, Yi Sun et al.

International Journal of Hydrogen Energy • 2016

Wei Wang, Baogang Zhang, Zhen He

Electrochimica Acta • 2019

Na Zhao, Dawei Liang, Shujuan Meng et al.

International Journal of Hydrogen Energy • 2020

Santhana Krishnan, Mohd Fadhil Md Din, Shazwin Mat Taib et al.

Journal of Cleaner Production • 2019

Muhammad Hassan, Ana Sotres Fernández, M. Isabel San-Martín et al.

International Journal of Hydrogen Energy • 2018

Si‐Kyung Cho, Myoung-Eun Lee, Wontae Lee et al.

International Journal of Hydrogen Energy • 2018

Yongzhong Wang, Lei Zhang, Tengfei Xu et al.

International Journal of Hydrogen Energy • 2017

Yiran Chen, Jingya Shen, Liping Huang et al.

International Journal of Hydrogen Energy • 2016

Pratiksha Srivastava, Enrique García‐Quismondo, Jesús Palma et al.

International Journal of Hydrogen Energy • 2023

Hydrogen (H2) is considered as a renewable energy source which has the potential to replace the fossil fuel-based economy. When it comes to achieve H2 production in a sustainable manner, biological methods are preferred among all other technologies. Out of the biological processes, microbial electrolysis cell (MEC) and dark fermentation (DF) have attracted significant attention for H2 production because the energy requirement is significantly reduced and a wide range of organic matter can be used as substrate. However, the underlying biochemical reactions and generated energy molecule(s)/products associated with DF or MEC, can benefit in achieving higher H2 production when coupled together. The DF can provide better substrate with high conductivity to overcome charge transfer challenges associated with MEC, and thereby it can further help to improve energy recovery. Thus, this review provides insights into the technological, microbiological, and economic competitiveness of coupling DF-MEC while it also identifies limitations and potential solutions.

Laura Rago, Juan Antonio Baeza, Albert Guisasola

Bioelectrochemistry • 2016

Abdullah Almatouq, A.O. Babatunde

Bioresource Technology • 2017

Lei Zhang, Yongzhong Wang, Tiantao Zhao et al.

International Journal of Hydrogen Energy • 2019

Tahereh Jafary, Wan Ramli Wan Daud, Mostafa Ghasemi et al.

Journal of Cleaner Production • 2017

Jingjing Huang, Huajun Feng, Lijie Huang et al.

Waste Management • 2019

Ruixia Shen, Zhidan Liu, Yanhong He et al.

International Journal of Hydrogen Energy • 2016

Daniel C. Aiken, Thomas P. Curtis, Elizabeth Heidrich

International Journal of Hydrogen Energy • 2019

We propose targets, based on real world data, necessary to design a financially viable microbial electrolysis cell (MEC) for the treatment of domestic wastewater. By reducing the cost of the anode and current collecting materials by 90%, a viable organic loading rate would be between 800 and 1,400g-COD/m3/d (2–3A/m2). The anode and current collector materials account for 94% of the total material costs; consequently, cost savings in any other material are moot. If the bioanode can be reused after 20 years, further, significant savings could be achieved. To develop targets we used real world data, for the first time, to evaluate the financial viability of MECs against the current predominant method of wastewater treatment: activated sludge. We modelled net present values for eight potential scenarios and the performances required for MECs to break-even.

Marina Badia-Fabregat, Laura Rago, Juan Antonio Baeza et al.

International Journal of Hydrogen Energy • 2019

Yanping Hou, Renduo Zhang, Zebin Yu et al.

Bioresource Technology • 2016

Amol Pophali, Shiv Singh, Nishith Verma

International Journal of Hydrogen Energy • 2020

Dandan Liang, Lijuan Zhang, Weihua He et al.

Applied Energy • 2020

Phan Khanh Thinh Nguyen, Gautam Das, Jihyeon Kim et al.

Bioresource Technology • 2020

Weiwei Cai, Wenzong Liu, Jinglong Han et al.

Biosensors and Bioelectronics • 2016

Sunghoon Son, Bonyoung Koo, Hyungwon Chai et al.

Journal of Water Process Engineering • 2020

Weiwei Cai, Zhaojing Zhang, Ge Ren et al.

Applied Energy • 2016

Jingwei Chen, Wenwen Xu, Xiaomin Wu et al.

Energy Conversion and Management • 2019

Sung-Gwan Park, P. P. Rajesh, Young-Uk Sim et al.

Energy Reports • 2022

Bioelectrohydrogenesis using a microbial electrolysis cell (MEC) is a promising technology for simultaneous hydrogen production and wastewater treatment which uses electrogenic microbes. Microbial activity at the anode and hydrogen evolution reaction at the cathode can be controlled by electrode–microbe interaction and electron transfer. The selection of anode electrode material is governed by electrochemical oxidation of substrates and subsequent electron transfer to the anode. Similarly, a good cathodic material should reduce the overpotential at the cathode and enhance the hydrogen evolution reaction and H2 recovery. This review mainly focused on modifications in electrode materials and cheaper novel alternatives to improve the performance for MEC and overcome its scale-up challenges for practical applications. Performance of various anode and cathode materials based on Ni alloys, stainless steel, polyaniline, palladium, and carbon has been discussed. The scalability of the material should consider its inexpensive fabrication procedure and efficiency.

Tahereh Jafary, Wan Ramli Wan Daud, Mostafa Ghasemi et al.

International Journal of Hydrogen Energy • 2018

Mohammad Zain Khan, Abdul‐Sattar Nizami, Mohammad Rehan et al.

Applied Energy • 2016

Jayaseelan Arun, PanneerSelvam SundarRajan, K. Pavithra et al.

Fuel • 2023

Rahul Gautam, Jagdeep Kumar Nayak, Neil V. Ress et al.

Chemical Engineering Journal • 2022

Kun Guo, Antonin Prévoteau, Korneel Rabaey

Journal of Power Sources • 2017

Abudukeremu Kadier, Mohd Sahaid Kalil, Peyman Abdeshahian et al.

Renewable and Sustainable Energy Reviews • 2016

Tongtong Liu, Guohong Liu, Ye Qiu et al.

Water Research • 2025

Mahesh M. Shanbhag, G. Manasa, Ronald J. Mascarenhas et al.

Chemical Engineering Journal Advances • 2023

The utilization of bio-functionalities such as biorecognition or catalysis derived them their name biosensors. Bio-electrochemical sensing is a new discipline that combines the advantages of biological detection and electrochemical transduction. Bio-electrochemical sensors are devices that use biological materials such as enzymes, antibodies, DNA, or cells as receptors to detect target analytes in a variety of samples. Electrodes convert biological interactions into electrical impulses, which can be studied using various electrochemical techniques. Bio-electrochemical sensors have demonstrated significant promise for use in clinical diagnostics, environmental monitoring, food safety, and biotechnology. Biosensors have received numerous applications in recent years because they are fast, simple, and inexpensive for practical applications. In this article, we cover the basic principles, design strategies, immobilization and regeneration techniques, along with the advantages and applications of bio-electrochemical sensors. Finally, this article discusses the rationale for developing electrochemical biosensors in the context of the various bio-receptors that can be applied.