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Bonné R, Marshall IPG, Bjerg JJ, Marzocchi U, Manca J, Nielsen LP, Aiyer K. Interaction of living cable bacteria with carbon electrodes in bioelectrochemical systems. Appl Environ Microbiol 2024; 90:e0079524. [PMID: 39082847 PMCID: PMC11337825 DOI: 10.1128/aem.00795-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Accepted: 07/09/2024] [Indexed: 08/22/2024] Open
Abstract
Cable bacteria are filamentous bacteria that couple the oxidation of sulfide in sediments to the reduction of oxygen via long-distance electron transport over centimeter distances through periplasmic wires. However, the capability of cable bacteria to perform extracellular electron transfer to acceptors, such as electrodes, has remained elusive. In this study, we demonstrate that living cable bacteria actively move toward electrodes in different bioelectrochemical systems. Carbon felt and carbon fiber electrodes poised at +200 mV attracted live cable bacteria from the sediment. When the applied potential was switched off, cable bacteria retracted from the electrode. qPCR and scanning electron microscopy corroborated this finding and revealed cable bacteria in higher abundance present on the electrode surface compared with unpoised controls. These experiments raise new possibilities to study metabolism of cable bacteria and cultivate them in bioelectrochemical devices for bioelectronic applications, such as biosensing and bioremediation. IMPORTANCE Extracellular electron transfer is a metabolic function associated with electroactive bacteria wherein electrons are exchanged with external electron acceptors or donors. This feature has enabled the development of several applications, such as biosensing, carbon capture, and energy recovery. Cable bacteria are a unique class of long, filamentous microbes that perform long-distance electron transport in freshwater and marine sediments. In this study, we demonstrate the attraction of cable bacteria toward carbon electrodes and demonstrate their potential electroactivity. This finding enables electronic control and monitoring of the metabolism of cable bacteria and may, in turn, aid in the development of bioelectronic applications.
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Affiliation(s)
- Robin Bonné
- Department of Biology, Center for Electromicrobiology, Aarhus University, Aarhus, Denmark
| | - Ian P. G. Marshall
- Department of Biology, Center for Electromicrobiology, Aarhus University, Aarhus, Denmark
| | - Jesper J. Bjerg
- Department of Biology, Center for Electromicrobiology, Aarhus University, Aarhus, Denmark
| | - Ugo Marzocchi
- Department of Biology, Center for Electromicrobiology, Aarhus University, Aarhus, Denmark
- Department of Biology, Center for Water Technology (WATEC), Aarhus University, Aarhus, Denmark
| | - Jean Manca
- X-LAB, Hasselt University, Agoralaan, Diepenbeek, Belgium
| | - Lars Peter Nielsen
- Department of Biology, Center for Electromicrobiology, Aarhus University, Aarhus, Denmark
| | - Kartik Aiyer
- Department of Biology, Center for Electromicrobiology, Aarhus University, Aarhus, Denmark
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Perchikov R, Cheliukanov M, Plekhanova Y, Tarasov S, Kharkova A, Butusov D, Arlyapov V, Nakamura H, Reshetilov A. Microbial Biofilms: Features of Formation and Potential for Use in Bioelectrochemical Devices. BIOSENSORS 2024; 14:302. [PMID: 38920606 PMCID: PMC11201457 DOI: 10.3390/bios14060302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 06/03/2024] [Accepted: 06/05/2024] [Indexed: 06/27/2024]
Abstract
Microbial biofilms present one of the most widespread forms of life on Earth. The formation of microbial communities on various surfaces presents a major challenge in a variety of fields, including medicine, the food industry, shipping, etc. At the same time, this process can also be used for the benefit of humans-in bioremediation, wastewater treatment, and various biotechnological processes. The main direction of using electroactive microbial biofilms is their incorporation into the composition of biosensor and biofuel cells This review examines the fundamental knowledge acquired about the structure and formation of biofilms, the properties they have when used in bioelectrochemical devices, and the characteristics of the formation of these structures on different surfaces. Special attention is given to the potential of applying the latest advances in genetic engineering in order to improve the performance of microbial biofilm-based devices and to regulate the processes that take place within them. Finally, we highlight possible ways of dealing with the drawbacks of using biofilms in the creation of highly efficient biosensors and biofuel cells.
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Affiliation(s)
- Roman Perchikov
- Federal State Budgetary Educational Institution of Higher Education, Tula State University, Tula 300012, Russia; (R.P.); (M.C.); (A.K.); (V.A.)
| | - Maxim Cheliukanov
- Federal State Budgetary Educational Institution of Higher Education, Tula State University, Tula 300012, Russia; (R.P.); (M.C.); (A.K.); (V.A.)
| | - Yulia Plekhanova
- Federal Research Center (Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences), G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino 142290, Russia; (Y.P.); (S.T.)
| | - Sergei Tarasov
- Federal Research Center (Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences), G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino 142290, Russia; (Y.P.); (S.T.)
| | - Anna Kharkova
- Federal State Budgetary Educational Institution of Higher Education, Tula State University, Tula 300012, Russia; (R.P.); (M.C.); (A.K.); (V.A.)
| | - Denis Butusov
- Computer-Aided Design Department, Saint Petersburg Electrotechnical University “LETI”, Saint Petersburg 197022, Russia;
| | - Vyacheslav Arlyapov
- Federal State Budgetary Educational Institution of Higher Education, Tula State University, Tula 300012, Russia; (R.P.); (M.C.); (A.K.); (V.A.)
| | - Hideaki Nakamura
- Department of Liberal Arts, Tokyo University of Technology, 1404-1 Katakura, Hachioji 192-0982, Tokyo, Japan;
| | - Anatoly Reshetilov
- Federal Research Center (Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences), G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino 142290, Russia; (Y.P.); (S.T.)
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3
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Octobre G, Delprat N, Doumèche B, Leca-Bouvier B. Herbicide detection: A review of enzyme- and cell-based biosensors. ENVIRONMENTAL RESEARCH 2024; 249:118330. [PMID: 38341074 DOI: 10.1016/j.envres.2024.118330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/18/2024] [Accepted: 01/27/2024] [Indexed: 02/12/2024]
Abstract
Herbicides are the most widely used class of pesticides in the world. Their intensive use raises the question of their harmfulness to the environment and human health. These pollutants need to be detected at low concentrations, especially in water samples. Commonly accepted analytical techniques (HPLC-MS, GC-MS, ELISA tests) are available, but these highly sensitive and time-consuming techniques suffer from high cost and from the need for bulky equipment, user training and sample pre-treatment. Biosensors can be used as complementary early-warning systems that are less sensitive and less selective. On the other hand, they are rapid, inexpensive, easy-to-handle and allow direct detection of the sample, on-site, without any further step other than dilution. This review focuses on enzyme- and cell- (or subcellular elements) based biosensors. Different enzymes (such as tyrosinase or peroxidase) whose activity is inhibited by herbicides are presented. Photosynthetic cells such as algae or cyanobacteria are also reported, as well as subcellular elements (thylakoids, chloroplasts). Atrazine, diuron, 2,4-D and glyphosate appear as the most frequently detected herbicides, using amperometry or optical transduction (mainly based on chlorophyll fluorescence). The recent new WSSA/HRAC classification of herbicides is also included in the review.
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Affiliation(s)
- Guillaume Octobre
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ICBMS, UMR5246, 69622 Villeurbanne, France.
| | - Nicolas Delprat
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ICBMS, UMR5246, 69622 Villeurbanne, France
| | - Bastien Doumèche
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ICBMS, UMR5246, 69622 Villeurbanne, France
| | - Béatrice Leca-Bouvier
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ICBMS, UMR5246, 69622 Villeurbanne, France.
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4
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Carducci NGG, Dey S, Hickey DP. Recent Developments and Applications of Microbial Electrochemical Biosensors. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2024; 187:149-183. [PMID: 38273205 DOI: 10.1007/10_2023_236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
This chapter provides a comprehensive overview of microbial electrochemical biosensors, which are a unique class of biosensors that utilize the metabolic activity of microorganisms to convert chemical signals into electrical signals. The principles and mechanisms of these biosensors are discussed, including the different types of microorganisms that can be used. The various applications of microbial electrochemical biosensors in fields such as environmental monitoring, medical diagnostics, and food safety are also explored. The chapter concludes with a discussion of future research directions and potential advancements in the field of microbial electrochemical biosensors.
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Affiliation(s)
- Nunzio Giorgio G Carducci
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI, USA
| | - Sunanda Dey
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI, USA
| | - David P Hickey
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI, USA.
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Aiyer K, Mukherjee D, Doyle LE. A Weak Electricigen-Based Bioelectrochemical Sensor for Real-Time Monitoring of Chemical Pollutants in Water. ACS APPLIED BIO MATERIALS 2023; 6:4105-4110. [PMID: 37718488 DOI: 10.1021/acsabm.3c00601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
Electroactive microorganisms are now understood to be abundant across nature, though many are categorized as "weak electricigens" not suitable for reasonable power generation. We report the use of weak electricigens from the natural environment for rapid, real-time water quality monitoring. Using a variety of pesticides as model chemical pollutants, the bioelectrochemical sensor was responsive within minutes at all concentrations tested (0.05-2 ppm) and could be repreatedly used long-term. Due to the prevalence of electroactive microorganisms in the natural environment, such sensors could work in tandem with conventional monitoring methods and may be useful for detecting emerging contaminants.
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Affiliation(s)
- Kartik Aiyer
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi 110016, India
- Center for Electromicrobiology, Aarhus University, Aarhus 8000, Denmark
| | - Debasa Mukherjee
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Lucinda E Doyle
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi 110016, India
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6
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Tsong JL, Khor SM. Modern analytical and bioanalytical technologies and concepts for smart and precision farming. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023. [PMID: 37376849 DOI: 10.1039/d3ay00647f] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
Unpredictable natural disasters, disease outbreaks, climate change, pollution, and war constantly threaten food crop production. Smart and precision farming encourages using information or data obtained by using advanced technology (sensors, AI, and IoT) to improve decision-making in agriculture and achieve high productivity. For instance, weather prediction, nutrient information, pollutant assessment, and pathogen determination can be made with the help of new analytical and bioanalytical methods, demonstrating the potential for societal impact such as environmental, agricultural, and food science. As a rising technology, biosensors can be a potential tool to promote smart and precision farming in developing and underdeveloped countries. This review emphasizes the role of on-field, in vivo, and wearable biosensors in smart and precision farming, especially those biosensing systems that have proven with suitably complex and analytically challenging samples. The development of various agricultural biosensors in the past five years that fulfill market requirements such as portability, low cost, long-term stability, user-friendliness, rapidity, and on-site monitoring will be reviewed. The challenges and prospects for developing IoT and AI-integrated biosensors to increase crop yield and advance sustainable agriculture will be discussed. Using biosensors in smart and precision farming would ensure food security and revenue for farming communities.
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Affiliation(s)
- Jia Ling Tsong
- Department of Chemistry, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Sook Mei Khor
- Department of Chemistry, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.
- Centre for Fundamental and Frontier Sciences in Nanostructure Self-Assembly, Department of Chemistry, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
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Wang Z, Li D, Shi Y, Sun Y, Okeke SI, Yang L, Zhang W, Zhang Z, Shi Y, Xiao L. Recent Implementations of Hydrogel-Based Microbial Electrochemical Technologies (METs) in Sensing Applications. SENSORS (BASEL, SWITZERLAND) 2023; 23:641. [PMID: 36679438 PMCID: PMC9866333 DOI: 10.3390/s23020641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/30/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
Hydrogel materials have been used extensively in microbial electrochemical technology (MET) and sensor development due to their high biocompatibility and low toxicity. With an increasing demand for sensors across different sectors, it is crucial to understand the current state within the sectors of hydrogel METs and sensors. Surprisingly, a systematic review examining the application of hydrogel-based METs to sensor technologies has not yet been conducted. This review aimed to identify the current research progress surrounding the incorporation of hydrogels within METs and sensors development, with a specific focus on microbial fuel cells (MFCs) and microbial electrolysis cells (MECs). The manufacturing process/cost, operational performance, analysis accuracy and stability of typical hydrogel materials in METs and sensors were summarised and analysed. The current challenges facing the technology as well as potential direction for future research were also discussed. This review will substantially promote the understanding of hydrogel materials used in METs and benefit the development of electrochemical biosensors using hydrogel-based METs.
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Affiliation(s)
- Zeena Wang
- Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, D02 PN40 Dublin, Ireland
| | - Dunzhu Li
- Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, D02 PN40 Dublin, Ireland
| | - Yunhong Shi
- Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, D02 PN40 Dublin, Ireland
| | - Yifan Sun
- Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, D02 PN40 Dublin, Ireland
| | - Saviour I. Okeke
- Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, D02 PN40 Dublin, Ireland
| | - Luming Yang
- Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, D02 PN40 Dublin, Ireland
| | - Wen Zhang
- Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, D02 PN40 Dublin, Ireland
| | - Zihan Zhang
- Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, D02 PN40 Dublin, Ireland
| | - Yanqi Shi
- Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, D02 PN40 Dublin, Ireland
| | - Liwen Xiao
- Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, D02 PN40 Dublin, Ireland
- TrinityHaus, Trinity College Dublin, D02 PN40 Dublin, Ireland
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8
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Yang C, Xiao N, Yang S, Huang JJ. Micro response mechanism of mini MFC sensor performance to temperature and its applicability to actual wastewater. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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9
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Enhanced Exoelectrogenic Activity of Cupriavidus metallidurans in Bioelectrochemical Systems through the Expression of a Constitutively Active Diguanylate Cyclase. ENVIRONMENTS 2022. [DOI: 10.3390/environments9070080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Electroactive bacteria have a wide range of applications, including electricity production, bioremediation, and the sensing of toxic compounds. Bacterial biofilm formation is often mediated by the second messenger cyclic guanosine monophosphate (c-di-GMP) synthesized by a diguanylate cyclase (DGC). The role of c-di-GMP in the expression of c-type cytochromes has been previously reported. The aim of this study was to determine the bioelectrogenic activity of Cupriavidus metallidurans strain CH34 pJBpleD*, which possesses a constitutively active DGC that increases c-di-GMP levels. Notably, the heterologous expression of the constitutively active DGC in C. metallidurans strain CH34 pJBpleD* showed a higher biofilm formation and increased the electrical current production up to 560%. In addition, C. metallidurans CH34 pJBpleD* showed increased levels of c-type cytochrome-associated transcripts compared with the wild-type strain CH34. Scanning electron microscopies revealed a denser extracellular matrix with an increased exopolymeric substance content in the CH34 pJBpleD* biofilm on the electrode surface. The results of this study suggest that higher levels of c-di-GMP synthesized by a constitutively active diguanylate cyclase in C. metallidurans strain CH34 pJBpleD* activated the formation of an electroactive biofilm on the electrode, enhancing its exoelectrogenic activity.
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Choi S. Electrogenic Bacteria Promise New Opportunities for Powering, Sensing, and Synthesizing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107902. [PMID: 35119203 DOI: 10.1002/smll.202107902] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/06/2022] [Indexed: 06/14/2023]
Abstract
Considerable research efforts into the promises of electrogenic bacteria and the commercial opportunities they present are attempting to identify potential feasible applications. Metabolic electrons from the bacteria enable electricity generation sufficient to power portable or small-scale applications, while the quantifiable electric signal in a miniaturized device platform can be sensitive enough to monitor and respond to changes in environmental conditions. Nanomaterials produced by the electrogenic bacteria can offer an innovative bottom-up biosynthetic approach to synergize bacterial electron transfer and create an effective coupling at the cell-electrode interface. Furthermore, electrogenic bacteria can revolutionize the field of bioelectronics by effectively interfacing electronics with microbes through extracellular electron transfer. Here, these new directions for the electrogenic bacteria and their recent integration with micro- and nanosystems are comprehensively discussed with specific attention toward distinct applications in the field of powering, sensing, and synthesizing. Furthermore, challenges of individual applications and strategies toward potential solutions are provided to offer valuable guidelines for practical implementation. Finally, the perspective and view on how the use of electrogenic bacteria can hold immeasurable promise for the development of future electronics and their applications are presented.
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Affiliation(s)
- Seokheun Choi
- Bioelectronics & Microsystems Laboratory, Department of Electrical & Computer Engineering, State University of New York at Binghamton, Binghamton, NY, 13902, USA
- Center for Research in Advanced Sensing Technologies & Environmental Sustainability, State University of New York at Binghamton, Binghamton, NY, 13902, USA
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11
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Hoang AT, Nižetić S, Ng KH, Papadopoulos AM, Le AT, Kumar S, Hadiyanto H, Pham VV. Microbial fuel cells for bioelectricity production from waste as sustainable prospect of future energy sector. CHEMOSPHERE 2022; 287:132285. [PMID: 34563769 DOI: 10.1016/j.chemosphere.2021.132285] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/23/2021] [Accepted: 09/16/2021] [Indexed: 06/13/2023]
Abstract
Microbial fuel cell (MFC) is lauded for its potentials to solve both energy crisis and environmental pollution. Technologically, it offers the capability to harness electricity from the chemical energy stored in the organic substrate with no intermediate steps, thereby minimizes the entropic loss due to the inter-conversion of energy. The sciences underneath such MFCs include the electron and proton generation from the metabolic decomposition of the substrate by microbes at the anode, followed by the shuttling of these charges to cathode for electricity generation. While its promising prospects were mutually evinced in the past investigations, the upscaling of MFC in sustaining global energy demands and waste treatments is yet to be put into practice. In this context, the current review summarizes the important knowledge and applications of MFCs, concurrently identifies the technological bottlenecks that restricted its vast implementation. In addition, economic analysis was also performed to provide multiangle perspectives to readers. Succinctly, MFCs are mainly hindered by the slow metabolic kinetics, sluggish transfer of charged particles, and low economic competitiveness when compared to conventional technologies. From these hindering factors, insightful strategies for improved practicality of MFCs were formulated, with potential future research direction being identified too. With proper planning, we are delighted to see the industrialization of MFCs in the near future, which would benefit the entire human race with cleaner energy and the environment.
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Affiliation(s)
- Anh Tuan Hoang
- Institute of Engineering, Ho Chi Minh City University of Technology (HUTECH), Ho Chi Minh City, Viet Nam.
| | - Sandro Nižetić
- University of Split, FESB, Rudjera Boskovica 32, 21000, Split, Croatia
| | - Kim Hoong Ng
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan.
| | - Agis M Papadopoulos
- Process Equipment Design Laboratory, Department of Mechanical Engineering, Aristotle University of Thessaloniki, Postal Address: GR-54124, Thessaloniki, Greece
| | - Anh Tuan Le
- School of Transportation Engineering, Hanoi University of Science and Technology, Hanoi, Viet Nam.
| | - Sunil Kumar
- Waste Reprocessing Division, CSIR-National Environmental Engineering Research Institute, Nagpur, 440 020, India
| | - H Hadiyanto
- Center of Biomass and Renewable Energy (CBIORE), Department of Chemical Engineering, Diponegoro University, Jl. Prof. Soedarto SH, Tembalang, Semarang, 50271, Indonesia; School of Postgraduate Studies, Diponegoro University, Jl. Imam Bardjo, SH Semarang, 50241, Indonesia.
| | - Van Viet Pham
- PATET Research Group, Ho Chi Minh City University of Transport, Ho Chi Minh City, Viet Nam.
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12
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Xu L, Yu W, Graham N, Zhao Y. Revisiting the bioelectrochemical system based biosensor for organic sensing and the prospect on constructed wetland-microbial fuel cell. CHEMOSPHERE 2021; 264:128532. [PMID: 33038753 DOI: 10.1016/j.chemosphere.2020.128532] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 08/11/2020] [Accepted: 10/02/2020] [Indexed: 06/11/2023]
Abstract
Bioelectrochemical system (BES) based biosensors for organic sensing has long been investigated. However, there is no uniform criterion to evaluate directly the performance of the BES based biosensors due to their different scale. Here, for the first time, we show that the normalized maximum detection range (NMDR) and normalized sensing time (NST) can potentially be used as the two criteria in BES based biosensors for organic sensing. Thereafter, the recently emerged, relatively larger scale BES (i.e. constructed wetland-microbial fuel cell, CW-MFC) was specifically examined in this study. The biocathode formation and the influence of anodic material on sensor performance were systematically evaluated. The system with metal-based anode was found to produce a more stable and quicker response (low NST) than that with carbon-based anode. Significantly, the continuous loading mode was found to greatly reduce the NMDR compared to the batch mode, and the hydraulic residence time (HRT) is the critical factor determining the NMDR. Furthermore, it was found that the electrical signals generated from the CW-MFC system were insignificantly influenced by some specific chemical disturbances, such as Cu2+ and herbicide. Therefore, normalized toxicity (NT) is suggested to be considered in BES based biosensor. However, for chemicals with higher reduction potentials (NO3- in this work), the system presented a high response, enabling its potential for monitoring NO3- in effluents or groundwater. This study can hopefully contribute to further development of the sustainable BES based biosensors in CW.
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Affiliation(s)
- Lei Xu
- Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Centre for Water Resources Research, School of Civil Engineering, University College Dublin, Belfield, Dublin, 4, Ireland
| | - Wenzheng Yu
- Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
| | - Nigel Graham
- Department of Civil and Environmental Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Yaqian Zhao
- Centre for Water Resources Research, School of Civil Engineering, University College Dublin, Belfield, Dublin, 4, Ireland
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13
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Pinck S, Ostormujof LM, Teychené S, Erable B. Microfluidic Microbial Bioelectrochemical Systems: An Integrated Investigation Platform for a More Fundamental Understanding of Electroactive Bacterial Biofilms. Microorganisms 2020; 8:E1841. [PMID: 33238493 PMCID: PMC7700166 DOI: 10.3390/microorganisms8111841] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 12/31/2022] Open
Abstract
It is the ambition of many researchers to finally be able to close in on the fundamental, coupled phenomena that occur during the formation and expression of electrocatalytic activity in electroactive biofilms. It is because of this desire to understand that bioelectrochemical systems (BESs) have been miniaturized into microBES by taking advantage of the worldwide development of microfluidics. Microfluidics tools applied to bioelectrochemistry permit even more fundamental studies of interactions and coupled phenomena occurring at the microscale, thanks, in particular, to the concomitant combination of electroanalysis, spectroscopic analytical techniques and real-time microscopy that is now possible. The analytical microsystem is therefore much better suited to the monitoring, not only of electroactive biofilm formation but also of the expression and disentangling of extracellular electron transfer (EET) catalytic mechanisms. This article reviews the details of the configurations of microfluidic BESs designed for selected objectives and their microfabrication techniques. Because the aim is to manipulate microvolumes and due to the high modularity of the experimental systems, the interfacial conditions between electrodes and electrolytes are perfectly controlled in terms of physicochemistry (pH, nutrients, chemical effectors, etc.) and hydrodynamics (shear, material transport, etc.). Most of the theoretical advances have been obtained thanks to work carried out using models of electroactive bacteria monocultures, mainly to simplify biological investigation systems. However, a huge virgin field of investigation still remains to be explored by taking advantage of the capacities of microfluidic BESs regarding the complexity and interactions of mixed electroactive biofilms.
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Affiliation(s)
| | | | | | - Benjamin Erable
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, 31432 Toulouse, France; (S.P.); (L.M.O.); (S.T.)
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14
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Rylott EL, Bruce NC. How synthetic biology can help bioremediation. Curr Opin Chem Biol 2020; 58:86-95. [PMID: 32805454 DOI: 10.1016/j.cbpa.2020.07.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 06/29/2020] [Accepted: 07/02/2020] [Indexed: 01/01/2023]
Abstract
The World Health Organization reported that "an estimated 12.6 million people died as a result of living or working in an unhealthy environment in 2012, nearly 1 in 4 of total global deaths". Air, water and soil pollution were the significant risk factors, and there is an urgent need for effective remediation strategies. But tackling this problem is not easy; there are many different types of pollutants, often widely dispersed, difficult to locate and identify, and in many cases cost-effective clean-up techniques are lacking. Biology offers enormous potential as a tool to develop microbial and plant-based solutions to remediate and restore our environment. Advances in synthetic biology are unlocking this potential enabling the design of tailor-made organisms for bioremediation. In this article, we showcase examples of xenobiotic clean-up to illustrate current achievements and discuss the limitations to advancing this promising technology to make real-world improvements in the remediation of global pollution.
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Affiliation(s)
- Elizabeth L Rylott
- Centre for Novel Agricultural Products, Department of Biology, University of York, Wentworth Way, York YO10 5DD, UK.
| | - Neil C Bruce
- Centre for Novel Agricultural Products, Department of Biology, University of York, Wentworth Way, York YO10 5DD, UK.
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15
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Tucci M, Bombelli P, Howe CJ, Vignolini S, Bocchi S, Schievano A. A Storable Mediatorless Electrochemical Biosensor for Herbicide Detection. Microorganisms 2019; 7:E630. [PMID: 31795453 PMCID: PMC6956157 DOI: 10.3390/microorganisms7120630] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/22/2019] [Accepted: 11/25/2019] [Indexed: 11/16/2022] Open
Abstract
A novel mediatorless photo-bioelectrochemical sensor operated with a biofilm of the cyanobacterium Synechocystis PCC6803 wt. for herbicide detection with long term stability (>20 days) was successfully developed and tested. Photoanodic current generation was obtained in the absence of artificial mediators. The inhibitory effect on photocurrent of three commonly used herbicides (i.e., atrazine, diuron, and paraquat) was used as a means of measuring their concentrations in aqueous solution. The injection of atrazine and diuron into the algal medium caused an immediate photocurrent drop due to the inhibition of photosynthetic electron transport. The detected concentrations were suitable for environmental analysis, as revealed by a comparison with the freshwater quality benchmarks set by the Environmental Protection Agency of the United States (US EPA). In contrast, paraquat caused an initial increase (~2 h) of the photocurrent effect of about 200%, as this compound can act as a redox mediator between the cells and the anode. A relatively long-term stability of the biosensor was demonstrated, by keeping anodes colonized with cyanobacterial biofilm in the dark at 4 °C. After 22 days of storage, the performance in terms of the photocurrent was comparable with the freshly prepared biosensor. This result was confirmed by the measurement of chlorophyll content, which demonstrated preservation of the cyanobacterial biofilm. The capacity of this biosensor to recover after a cold season or other prolonged environmental stresses could be a key advantage in field applications, such as in water bodies and agriculture. This study is a step forward in the biotechnological development and implementation of storable mediatorless electrochemical biosensors for herbicide detection.
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Affiliation(s)
- Matteo Tucci
- e-Bio Center, Department of Environmental Science and Policy, Università degli Studi di Milano, via Celoria 2, 20,133 Milan, Italy; (M.T.); (A.S.)
| | - Paolo Bombelli
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Via Celoria, 2, 20,133 Milano, Italy;
- Department of Biochemistry, University of Cambridge, Hopkins Building, Downing Site, Tennis Court Road, Cambridge CB2 1QW, UK;
| | - Christopher J. Howe
- Department of Biochemistry, University of Cambridge, Hopkins Building, Downing Site, Tennis Court Road, Cambridge CB2 1QW, UK;
| | - Silvia Vignolini
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK;
| | - Stefano Bocchi
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Via Celoria, 2, 20,133 Milano, Italy;
| | - Andrea Schievano
- e-Bio Center, Department of Environmental Science and Policy, Università degli Studi di Milano, via Celoria 2, 20,133 Milan, Italy; (M.T.); (A.S.)
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