Bioelectrochemical Systems (BES) for Microbial Electroremediation: An Advanced Wastewater Treatment Technology

Mohanakrishna, Gunda; Srikanth, S.; Pant, Deepak

doi:10.1007/978-81-322-2123-4_10

Cited by 12 publications

(8 citation statements)

References 130 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This technology has interesting applications, including bioelectricity production, biogas production, wastewater treatment, and removal of toxic compounds . Currently, treatments with bioelectrochemical systems (BESs) have emerged as an interesting technology that can be used for the generation of bioelectricity from organic substrates obtained during wastewater treatment …”

Section: Introductionmentioning

confidence: 99%

Recent advances in constructed wetland‐microbial fuel cells for simultaneous bioelectricity production and wastewater treatment: A review

et al. 2019

View full text Add to dashboard Cite

Summary The coupling of constructed wetlands (CWs) to microbial fuel cells (MFCs) has turned out to be a source of renewable energy for the production of bioelectricity and for the simultaneous wastewater treatment. Both technologies have an aerobic zone in the air‐water interface and an anaerobic zone in the lower part, where the anode and the cathode are strategically placed. This hybridization is a promising bioelectrochemical technology that exerts a symbiosis between plant‐bacteria in the rhizosphere of an aquatic plant, converting solar energy into bioelectricity through the formation of root exudates as an endogenous substrate and a microbial activity. The difference between CW‐MFC and MFC conventional lies in the bioelectricity and substrate production in situ, where exogenous substrates are not required for example wastewater. However, CW‐MFC can take organic content present in wastewater, promoting the removal of some pollutants. Different areas that comprise the study of a CW‐MFC have been explored, including the structures and their operation. This review aims to provide concise information on the state of the art of CW‐MFC systems, where a summary on important aspects of the development of this technology, such as bioelectricity production, configurations, plant species, rhizodeposits, electrode materials, wastewater treatment, and future perspectives, is presented. This system is a promising technology, not only for the production of bioenergy but also to maintain a clean environment, since during its operation, no toxic byproducts were formed.

show abstract

Section: Introductionmentioning

confidence: 99%

Recent advances in constructed wetland‐microbial fuel cells for simultaneous bioelectricity production and wastewater treatment: A review

et al. 2019

View full text Add to dashboard Cite

show abstract

“…This could be due to potentially negative influence on the organoleptic characteristics (in the case of food) or inadmissible change in the chemical and biological properties of the products subject to antioxidant protection (in the case of pharmaceuticals, ultra-pure and analytical chemicals, solutions of biologically active substances, etc.). Another drawback is related to the radical-chain reactions or pro-oxidant activities, which may occur in some cases after application of chemical antioxidants [29].…”

Section: Resultsmentioning

confidence: 99%

Microbial fuel cell as a free-radical scavenging tool

Koleva

Yemendzhiev

Nenov

2017

Biotechnology & Biotechnological Equipment

View full text Add to dashboard Cite

Microbial fuel cells (MFCs) are known for their capability to directly convert organic substrates into electricity by the biochemical activity of specific microorganisms. Availability of a proper terminal electron acceptor is crucial for this process. Free radicals, with their one or more unpaired electrons, are extremely reducible and could be considered as electron acceptors in terms of cathodic processes in MFC. During this reduction, free radicals could be transformed in the same manner as they are transformed by antioxidants. The present study investigated this opportunity by utilization of 2,2-diphenyl-1-picrylhydrazyl (150 mmol/dm 3 methanol solution) as a free-radical molecule. During the studied process, over 90% radical neutralization was observed in less than 16 hours. The results obtained demonstrate for the first time the potential of MFC type bioelectrochemical systems to serve as a free-radical scavenging tool and to provide antioxidant and anti-radical activity. In this way, this study opens a completely new field of research and application of bio-electrochemical systems.

show abstract

“…This occurs through chains of multifaceted microbial-electrochemical reactions. Mohanakrishna et al, 35 defined BES as a growing technology that employs microorganisms to convert chemical energy in wastewater to electrical energy through different microbial electrochemical reactions and devices. 36 Figure 1, presents an outline of various electrochemical devices, processes and techniques that comprise BES.…”

Section: Bioelectrochemical System (Bes)mentioning

confidence: 99%

“…Mohanakrishna et al, 35 reported that bioenergy could be generated from the microbial (catabolism or anabolism) reactions in BFCs. This is as a result of the process of an amalgamation between fermentation or putrefaction (or oxidation) and respiration (reduction) reactions.…”

Section: Overview Of Mechanisms In Bfcsmentioning

confidence: 99%

Review of the principal mechanisms, prospects, and challenges of bioelectrochemical systems

Ivase

Nyakuma

Oladokun

et al. 2019

Env Prog and Sustain Energy

View full text Add to dashboard Cite

Bioelectrochemical systems (BES) are commonly utilized to generate green electricity, chemicals, and materials through bioelectrocatalytic processes. Over the years, the growing interests in low carbon energy, wastes valorization and the sustainable bioremediation of environmental pollutants have generated interests in BES such as microbial fuel cells (MFC) and bioelectrochemical fuel cells (BFC). The MFCs are the most advanced BES that can ensure the microbial conversion of chemical energy into electrical energy. Therefore, this article seeks to review and present valuable literature on the fundamental operational principles, mechanisms and understanding of BES such as MFCs. It seeks to highlight the schematics of these systems along with the processes and mechanisms such as the oxidation of organic substrates ranging from acetate compounds to complex mixtures. Furthermore, the prospects, challenges, and future applications of BES technologies are presented. The findings indicate that BFCs and MFCs are hampered by low efficiencies, energy output, mass transfer, porosity, and proton conductivity of the electrode and membrane materials along with mechanical strength, scalability, biocompatibility, and chemical stability. However, BES could potentially impact on clean energy production, greenhouse gases mitigation, wastewater treatment, bioanalysis, biosensors, and environmental remediation in the future.

show abstract

Bioelectrochemical Systems (BES) for Microbial Electroremediation: An Advanced Wastewater Treatment Technology

Cited by 12 publications

References 130 publications

Recent advances in constructed wetland‐microbial fuel cells for simultaneous bioelectricity production and wastewater treatment: A review

Recent advances in constructed wetland‐microbial fuel cells for simultaneous bioelectricity production and wastewater treatment: A review

Microbial fuel cell as a free-radical scavenging tool

Review of the principal mechanisms, prospects, and challenges of bioelectrochemical systems

Contact Info

Product

Resources

About