Improvement of Microbial Electrolysis Cell Activity by Using Anode Based on Combined Plasma-Pretreated Carbon Cloth and Stainless Steel

Rozenfeld, Shmuel; Hirsch, Lea Ouaknin; Gandu, Bharath; Farber, Ravit; Schechter, Alex; Cahan, Rivka

doi:10.3390/en12101968

Cited by 21 publications

(10 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, adherent cells on the anode are considered to be the main contributor to current generation in most cases [ 38 ]. Rozenfeld et al showed that the biofilm on the anode provided the majority of the power output rather than planktonic bacteria in different micro electrolysis cells [ 39 ].…”

Section: Resultsmentioning

confidence: 99%

Enhancement of the Start-Up Time for Microliter-Scale Microbial Fuel Cells (µMFCs) via the Surface Modification of Gold Electrodes

et al. 2020

View full text Add to dashboard Cite

Microbial Fuel Cells (MFCs) are biological fuel cells based on the oxidation of fuels by electrogenic bacteria to generate an electric current in electrochemical cells. There are several methods that can be employed to improve their performance. In this study, the effects of gold surface modification with different thiol molecules were investigated for their implementation as anode electrodes in micro-scale MFCs (µMFCs). Several double-chamber µMFCs with 10.4 µL anode and cathode chambers were fabricated using silicon-microelectromechanical systems (MEMS) fabrication technology. µMFC systems assembled with modified gold anodes were operated under anaerobic conditions with the continuous feeding of anolyte and catholyte to compare the effect of different thiol molecules on the biofilm formation of Shewanella oneidensis MR-1. Performances were evaluated using polarization curves, Electrochemical Impedance Spectroscopy (EIS), and Scanning Electron Microcopy (SEM). The results showed that µMFCs modified with thiol self-assembled monolayers (SAMs) (cysteamine and 11-MUA) resulted in more than a 50% reduction in start-up times due to better bacterial attachment on the anode surface. Both 11-MUA and cysteamine modifications resulted in dense biofilms, as observed in SEM images. The power output was found to be similar in cysteamine-modified and bare gold µMFCs. The power and current densities obtained in this study were comparable to those reported in similar studies in the literature.

show abstract

Section: Resultsmentioning

confidence: 99%

Enhancement of the Start-Up Time for Microliter-Scale Microbial Fuel Cells (µMFCs) via the Surface Modification of Gold Electrodes

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The anode materials must have a good biocompatibility and the hydrogen evaluation catalytic performance is mostly emphasized by the cathode materials. The cathode materials tested in MECs mainly include carbon-based materials [22] , graphite-based materials [23] , stainless steel-based materials [24] , titanium [25] , titanium plate electrode [26] , aluminum electrode [27] , nickel foam [28] , and gas diffusion electrode [29] . Some of electrodes have the characteristics of a low cost, good conductivity, lower over-potential, and stable performance [30] , making these materials much more suitable for practical MEC application than platinum.…”

Section: Figure 1 Overview and Principle Of The Mecs For Actual Wastementioning

confidence: 99%

Treatment of recalcitrant wastewater and hydrogen production via microbial electrolysis cells

Shen

Zhao

et al. 2019

International Journal of Agricultural and Biological Engineering

View full text Add to dashboard Cite

A large amount of real complex wastewaters are generated every year, which leads to a great environmental burden. Various treatment technologies were deployed to remove the contaminants in the wastewaters. However, these actual wastewaters have not been sufficiently treated due to their complex properties, high-concentration organics, incomplete utilization of hard-biodegradable substrates, the high energy input required, etc. Recently, microbial electrolysis cells (MECs), a great potential technology, has emerged for various wastewater treatment, because not only do they demonstrate satisfactory performance during wastewater treatment, but they also generate renewable H 2 as a clean energy carrier. Unlike previous reviews, this review introduced the characteristics of every complicated wastewater, and focused on analyzing and summarizing MEC development for wastewater treatment. The performances of MECs were systematically reviewed in terms of organics removal, H 2 production, Columbic efficiency, and energy efficiency. MEC performances for treating actual complex wastewaters and producing H 2 can be optimized through operation parameters, electrode materials, catalyst materials, etc. In addition, the challenges and opportunities including complexity of wastewaters, instability of H 2 production, robust microorganisms, effect of membrane on two-chamber MEC, and integration of MEC with other treatment processes were deeply discussed. Except for the technical feasibility, both environmental feasibility and economic feasibility also need to meet social requirements. This review can indeed provide a basis for high-efficiency treatment and practical commercial applications of recalcitrant wastewaters via MECs in the future.

show abstract

“…Carbon‐based materials commonly serve as anodes due to their chemical stability, high conductivity, and low cost 19–22 . Rozenfeld et al, 23 reported a novel anode composed of stainless steel (SS) and plasma‐pretreated carbon cloth (CCp) designated as COMBp. The MEC, which has COMBp anode led to a higher hydrogen evolution rate (HER) 0.063 m 3 d −1 m −2 at 0.6 V, compared to MECs based on each anode material alone, SS or CCp 23 …”

Section: Introductionmentioning

confidence: 99%

Hydrogen production in a semi‐single‐chamber microbial electrolysis cell based on anode encapsulated in a dialysis bag

et al. 2021

Self Cite

View full text Add to dashboard Cite

Summary This study focuses on a semi‐single‐chamber microbial electrolysis cell (MEC) based on an anode made of carbon cloth (CCp) combined with stainless‐steel (SS) and encapsulated in a dialysis bag with different molecular weight cut‐offs of 2, 14, and 50 kDa (D2‐, D14‐, and D50‐COMBp, respectively). The encapsulated anode was inoculated with Geobacter sulfurreducens in a small volume directly into the dialysis bag. While the MEC with the non‐encapsulated anode was inoculated into the main chamber volume. The hydrogen evolution rates obtained in the MECs based on D2‐COMBp, D14‐COMBp, and D50‐COMBp anodes were 0.134 ± 0.005, 0.144 ± 0.014, and 0.160 ± 0.009 m3m−2d−1, respectively; while the COMBp led to only 0.122 ± 0.004 m3m−2d−1. When the MEC utilizing D50‐COMBp was fed with wastewater, the current density was only 12.4 ± 0.21 A m−2, compared to feeding with acetate (15.7 ± 0.63 A m−2). The encapsulated anode in the presence of wastewater included 70% of G. sulfurreducens, while the non‐encapsulated included only 58%.

show abstract

Improvement of Microbial Electrolysis Cell Activity by Using Anode Based on Combined Plasma-Pretreated Carbon Cloth and Stainless Steel

Cited by 21 publications

References 55 publications

Enhancement of the Start-Up Time for Microliter-Scale Microbial Fuel Cells (µMFCs) via the Surface Modification of Gold Electrodes

Enhancement of the Start-Up Time for Microliter-Scale Microbial Fuel Cells (µMFCs) via the Surface Modification of Gold Electrodes

Treatment of recalcitrant wastewater and hydrogen production via microbial electrolysis cells

Hydrogen production in a semi‐single‐chamber microbial electrolysis cell based on anode encapsulated in a dialysis bag

Contact Info

Product

Resources

About