Hydrogen evolution in microbial electrolysis cells treating landfill leachate: Dynamics of anodic biofilm

Hassan, Muhammad; Fernández, Ana María González; Martin, Isabel San; Xie, Bing; Palao, Antonio Morán

doi:10.1016/j.ijhydene.2018.05.055

Cited by 42 publications

(14 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Higher geometric area bioanodes obtained with similar process have been reported by Verea et al with also similar results of hydrogen production of 0.28 m 3 /m 3 d and cathodic recovery of 75% [26]. Selembo et al used anodes with 0.22m 2 of area and glucose as a substrate and reported 0.83 m 3 /m 3 d and R C 51% [46] more recently with the aim to scale an MEC Hassan et al used carbon felt anodes with dimensions of 34.5 × 14.5 cm in a 1 L reactor with landfill as substrate and reported a hydrogen production of 0.04 m 3 /m 3 d and R C 95% [47]. These results prove that improving the process of the biofilm formation higher hydrogen production rates can be obtained.…”

Section: Hydrogen Productionmentioning

confidence: 99%

Improvement of biofilm formation for application in a single chamber microbial electrolysis cell

et al. 2021

View full text Add to dashboard Cite

An experimental design was performed to study the combined effects of the parameters used for bacteria selective biofilm formation. The parameters were the potential applied, the time of the biofilm formation with electroactive bacteria or the biofilm formation, and the initial substrate concentration in the medium. The performance of the biofilms formed was compared by their kinetic parameter the apparent electron transfer rate constant (K app ), which was obtained from cyclic voltammetry analysis. The results from the experimental design showed that the highest K app of 0.56 s −1 was with the potential applied of −0.45 V for 5 h and 12 mM of the initial substrate concentration in the medium. New values of these parameters were calculated from the statistical analysis of the experimental design results and successfully higher value of K app of 0.64 s −1 can be calculated and obtained. The electroactivity and capability of the biofilm for hydrogen production was also proved in a single chamber microbial electrolysis cell, and a hydrogen production yield of 0.24 m 3 H 2 /m 3 d was obtained. The biofilm formed with these last parameters was also identified with molecular techniques as Exiguobacterium which has barely been reported as electroactive bacteria and used for hydrogen production.

show abstract

Section: Hydrogen Productionmentioning

confidence: 99%

Improvement of biofilm formation for application in a single chamber microbial electrolysis cell

et al. 2021

View full text Add to dashboard Cite

show abstract

“…There is a further development of the concept of microbial fuel cells. The aim is to treat wastewater by electrolysis facilitated by microbial process in the anodic space of electrolyzer with simultaneous production of hydrogen on the cathode [67][68][69][70][71].…”

Section: Microbial Electrolysis Processesmentioning

confidence: 99%

“…There are papers, claiming to destroy landfill leachate and to produce hydrogen at the same time [71] and the COD removal efficiency is reported to reach 73%, whereas the hydrogen yield was up to 95%.…”

Section: Hydrogen Production In Microbial Electrolysis Cellsmentioning

confidence: 99%

Bioelectrochemical Processes in Industrial Biotechnology

Beschkov¹,

Razkazova-Velkova²

2021

Energy Storage Battery Systems - Fundamentals and Applications

View full text Add to dashboard Cite

Industrial fermentation and biological wastewater treatment are usually based on redox processes taking place in living cells and on enzyme processes. The practical application of these redox processes is usually associated with electricity generation in microbial fuel cells or process enhancement in microbial electrolysis cells. The microbial fuel cell approach leads to straightforward wastewater treatment with less energy demand. Additional advantages of these processes are the direct removal of various pollutants and the avoidance of addition of chemical agents with the resulting waste products of treatment as it is familiar with the traditional chemical methods. Another option for the use of bioelectrochemical processes in practice is the approach of microbial electrolysis cells. The application of electric field on fermentation or microbial wastewater treatment processes might result in different aspects: either in purely electrochemical processes on the electrodes or in different types of bioelectrochemical stimulation of enzyme activity in the living cells. These applications are associated with the combination of enzyme activity with electrochemical processes to produce or remove certain compounds rapidly at high concentrations with no additions of other chemicals. In the present chapter, both approaches (microbial fuel cells and microbial electrolysis cells) are presented and discussed. Some practical applications and experimental examples of such bioelectrochemical redox processes stimulated by constant electric field are demonstrated.

show abstract

“… 5 Physically, color due to dyes is aesthetically objectionable in water and more specifically red and purple as being unnatural create more concerns compared to blue, green and brown that are normally natural colors. 6 Moreover, color prevents sunlight penetration in water, 7 thereby limits gross ecological productivity (photosynthesis) of aquatic environment. Under these conditions, the natural processes can no longer compensate the bacterial consumption or decomposition of such and other contaminants resulting a stagnant aquatic environment.…”

Section: Introductionmentioning

confidence: 99%

“…9,22,23 METs principally work on the anaerobic bio-catalysis of contaminants for harnessing renewable energy [electrical 24 or gaseous energy (H 2 )]. 7 Recently, advancement on MXCs as Micro (Bio-)-electro-Fenton process (MEFP) is taking lead relying on the previously established WWT technologies typically including EFP, AOP, biological processes and MES. 15,18 MEFS using MFC or MECs have gone through a series of innovations and advancements.…”

Section: Introductionmentioning

confidence: 99%

Recent progress in treatment of dyes wastewater using microbial-electro-Fenton technology

et al. 2022

View full text Add to dashboard Cite

show abstract

Hydrogen evolution in microbial electrolysis cells treating landfill leachate: Dynamics of anodic biofilm

Cited by 42 publications

References 45 publications

Improvement of biofilm formation for application in a single chamber microbial electrolysis cell

Improvement of biofilm formation for application in a single chamber microbial electrolysis cell

Bioelectrochemical Processes in Industrial Biotechnology

Recent progress in treatment of dyes wastewater using microbial-electro-Fenton technology

Contact Info

Product

Resources

About