1
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Qi X, Gao X, Wang X, Xu P. Harnessing Pseudomonas putida in bioelectrochemical systems. Trends Biotechnol 2024; 42:877-894. [PMID: 38184440 DOI: 10.1016/j.tibtech.2023.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/02/2023] [Accepted: 12/04/2023] [Indexed: 01/08/2024]
Abstract
Bioelectrochemical systems (BESs), a group of promising integrated systems that combine the advantages of biotechnology and electrochemical techniques, offer new opportunities to address environmental and energy challenges. Exoelectrogens capable of extracellular electron transfer (EET) are the critical factor enabling electrocatalytic activity in BESs. Pseudomonas putida, an aerobe widely used in environmental bioremediation, the biosynthesis of valuable chemicals, and energy bioproduction, has attracted much attention due to its unique application potential in BESs. This review provides a comprehensive understanding of the working principles, key factors, and applications of BESs using P. putida as the exoelectrogen. The challenges and perspectives for the development of BESs with P. putida as the exoelectrogen are also proposed and discussed.
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Affiliation(s)
- Xiaoyan Qi
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, PR China
| | - Xinyu Gao
- College of Arts and Science, University of North Carolina at Chapel Hill, Chapel Hill, NC 27514, USA
| | - Xia Wang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, PR China.
| | - Ping Xu
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, PR China.
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2
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Wu D, Wang W, Yao Y, Li H, Wang Q, Niu B. Microbial interactions within beneficial consortia promote soil health. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 900:165801. [PMID: 37499809 DOI: 10.1016/j.scitotenv.2023.165801] [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: 01/31/2022] [Revised: 04/26/2023] [Accepted: 07/24/2023] [Indexed: 07/29/2023]
Abstract
By ecologically interacting with various biotic and abiotic agents acting in soil ecosystems, highly diverse soil microorganisms establish complex and stable assemblages and survive in a community context in natural settings. Besides facilitating soil microbiome to maintain great levels of population homeostasis, such microbial interactions drive soil microbes to function as the major engine of terrestrial biogeochemical cycling. It is verified that the regulative effect of microbe-microbe interplay plays an instrumental role in microbial-mediated promotion of soil health, including bioremediation of soil pollutants and biocontrol of soil-borne phytopathogens, which is considered an environmentally friendly strategy for ensuring the healthy condition of soils. Specifically, in microbial consortia, it has been proven that microorganism-microorganism interactions are involved in enhancing the soil health-promoting effectiveness (i.e., efficacies of pollution reduction and disease inhibition) of the beneficial microbes, here defined as soil health-promoting agents. These microbial interactions can positively regulate the soil health-enhancing effect by supporting those soil health-promoting agents utilized in combination, as multi-strain soil health-promoting agents, to overcome three main obstacles: inadequate soil colonization, insufficient soil contaminant eradication and inefficient soil-borne pathogen suppression, all of which can restrict their probiotic functionality. Yet the mechanisms underlying such beneficial interaction-related adjustments and how to efficiently assemble soil health-enhancing consortia with the guidance of microbe-microbe communications remain incompletely understood. In this review, we focus on bacterial and fungal soil health-promoting agents to summarize current research progress on the utilization of multi-strain soil health-promoting agents in the control of soil pollution and soil-borne plant diseases. We discuss potential microbial interaction-relevant mechanisms deployed by the probiotic microorganisms to upgrade their functions in managing soil health. We emphasize the interplay-related factors that should be taken into account when building soil health-promoting consortia, and propose a workflow for assembling them by employing a reductionist synthetic community approach.
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Affiliation(s)
- Di Wu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; The Center for Basic Forestry Research, Northeast Forestry University, Harbin 150040, China; College of Life Science, Northeast Forestry University, Harbin 150040, China
| | - Weixiong Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; The Center for Basic Forestry Research, Northeast Forestry University, Harbin 150040, China; College of Life Science, Northeast Forestry University, Harbin 150040, China
| | - Yanpo Yao
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Hongtao Li
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China
| | - Qi Wang
- Department of Plant Pathology, MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Ben Niu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; The Center for Basic Forestry Research, Northeast Forestry University, Harbin 150040, China; College of Life Science, Northeast Forestry University, Harbin 150040, China.
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3
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Zhou Q, Li R, Li T, Zhou R, Hou Z, Zhang X. Interactions among microorganisms functionally active for electron transfer and pollutant degradation in natural environments. ECO-ENVIRONMENT & HEALTH (ONLINE) 2023; 2:3-15. [PMID: 38074455 PMCID: PMC10702900 DOI: 10.1016/j.eehl.2023.01.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 12/13/2022] [Accepted: 01/03/2023] [Indexed: 03/03/2024]
Abstract
Compared to single microbial strains, complex interactions between microbial consortia composed of various microorganisms have been shown to be effective in expanding ecological functions and accomplishing biological processes. Electroactive microorganisms (EMs) and degradable microorganisms (DMs) play vital roles in bioenergy production and the degradation of organic pollutants hazardous to human health. These microorganisms can strongly interact with other microorganisms and promote metabolic cooperation, thus facilitating electricity production and pollutant degradation. In this review, we describe several specific types of EMs and DMs based on their ability to adapt to different environments, and summarize the mechanism of EMs in extracellular electron transfer. The effects of interactions between EMs and DMs are evaluated in terms of electricity production and degradation efficiency. The principle of the enhancement in microbial consortia is also introduced, such as improved biomass, changed degradation pathways, and biocatalytic potentials, which are directly or indirectly conducive to human health.
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Affiliation(s)
- Qixing Zhou
- MOE Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Ruixiang Li
- MOE Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Tian Li
- MOE Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Ruiren Zhou
- Department of Biological and Agricultural Engineering, Texas A&M University, TX 77843-2117, USA
| | - Zelin Hou
- MOE Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Xiaolin Zhang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
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4
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Cherednichenko K, Kopitsyn D, Batasheva S, Fakhrullin R. Probing Antimicrobial Halloysite/Biopolymer Composites with Electron Microscopy: Advantages and Limitations. Polymers (Basel) 2021; 13:3510. [PMID: 34685269 PMCID: PMC8538282 DOI: 10.3390/polym13203510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 09/29/2021] [Accepted: 10/08/2021] [Indexed: 01/07/2023] Open
Abstract
Halloysite is a tubular clay nanomaterial of the kaolin group with a characteristic feature of oppositely charged outer and inner surfaces, allowing its selective spatial modification. The natural origin and specific properties of halloysite make it a potent material for inclusion in biopolymer composites with polysaccharides, nucleic acids and proteins. The applications of halloysite/biopolymer composites range from drug delivery and tissue engineering to food packaging and the creation of stable enzyme-based catalysts. Another important application field for the halloysite complexes with biopolymers is surface coatings resistant to formation of microbial biofilms (elaborated communities of various microorganisms attached to biotic or abiotic surfaces and embedded in an extracellular polymeric matrix). Within biofilms, the microorganisms are protected from the action of antibiotics, engendering the problem of hard-to-treat recurrent infectious diseases. The clay/biopolymer composites can be characterized by a number of methods, including dynamic light scattering, thermo gravimetric analysis, Fourier-transform infrared spectroscopy as well as a range of microscopic techniques. However, most of the above methods provide general information about a bulk sample. In contrast, the combination of electron microscopy with energy-dispersive X-ray spectroscopy allows assessment of the appearance and composition of biopolymeric coatings on individual nanotubes or the distribution of the nanotubes in biopolymeric matrices. In this review, recent contributions of electron microscopy to the studies of halloysite/biopolymer composites are reviewed along with the challenges and perspectives in the field.
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Affiliation(s)
- Kirill Cherednichenko
- Department of Physical and Colloid Chemistry, Faculty of Chemical and Environmental Engineering, National University of Oil and Gas «Gubkin University», 65 Leninsky Prospekt, 119991 Moscow, Russia; (K.C.); (D.K.)
| | - Dmitry Kopitsyn
- Department of Physical and Colloid Chemistry, Faculty of Chemical and Environmental Engineering, National University of Oil and Gas «Gubkin University», 65 Leninsky Prospekt, 119991 Moscow, Russia; (K.C.); (D.K.)
| | - Svetlana Batasheva
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kreml uramı, 18, 420008 Kazan, Republic of Tatarstan, Russia;
| | - Rawil Fakhrullin
- Department of Physical and Colloid Chemistry, Faculty of Chemical and Environmental Engineering, National University of Oil and Gas «Gubkin University», 65 Leninsky Prospekt, 119991 Moscow, Russia; (K.C.); (D.K.)
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kreml uramı, 18, 420008 Kazan, Republic of Tatarstan, Russia;
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5
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Šlosarčíková P, Plachá D, Malachová K, Rybková Z, Novotný Č. Biodegradation of Reactive Orange 16 azo dye by simultaneous action of Pleurotus ostreatus and the yeast Candida zeylanoides. Folia Microbiol (Praha) 2020; 65:629-638. [PMID: 31970597 DOI: 10.1007/s12223-019-00767-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Accepted: 12/23/2019] [Indexed: 02/06/2023]
Abstract
The purpose was to investigate a simultaneous biodegradation of the recalcitrant monoazo dye Reactive Orange 16 (RO16) in a mixed culture consisting of a biofilm of Pleurotus ostreatus-colonizing polyamide carrier and a suspension of the yeast Candida zeylanoides to see their biological interactions and possible synergistic action during degradation. Decolorization in the mixed culture was more effective than in the fungal monoculture, the respective decolorizations reaching 87.5% and 70% on day 11. The proliferation of yeast was reduced compared with the C. zeylanoides monoculture but enabled the yeast to participate in decolorization. The interaction of P. ostreatus with the yeast resulted in a gradual decrease of fungal manganese-dependent peroxidase (MnP) and laccase activities. Gas chromatography-mass spectrometry (GC-MS) analysis of the degradation products brought evidence that P. ostreatus split the dye molecule asymmetrically to provide 4-(ethenylsulfonyl) benzene whose concentration was much decreased in the mixed culture suggesting its increased metabolization in the presence of the yeast. In contrast, C. zeylanoides split the azo bond symmetrically producing the metabolites 4-(ethenylsulfonyl) aniline and α-hydroxybenzenepropanoic acid. Those metabolites were rapidly degraded in the mixed culture. A novel aspect is represented by the evidence of a mutual cooperative action of the fungal and yeast microorganisms in the mixed culture resulting in rapid decolorization and degradation of the dye.
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Affiliation(s)
- Pavlína Šlosarčíková
- Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00, Slezská Ostrava, Czech Republic.
| | - Daniela Plachá
- Nanotechnology Centre VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 708 33, Ostrava-Poruba, Czech Republic
| | - Kateřina Malachová
- Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00, Slezská Ostrava, Czech Republic
| | - Zuzana Rybková
- Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00, Slezská Ostrava, Czech Republic
| | - Čeněk Novotný
- Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00, Slezská Ostrava, Czech Republic.,Laboratory of Environmental Biotechnology, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20, Prague 4, Czech Republic
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6
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Singh R, Ryu J, Kim SW. Microbial consortia including methanotrophs: some benefits of living together. J Microbiol 2019; 57:939-952. [PMID: 31659683 DOI: 10.1007/s12275-019-9328-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/30/2019] [Accepted: 09/25/2019] [Indexed: 01/13/2023]
Abstract
With the progress of biotechnological research and improvements made in bioprocessing with pure cultures, microbial consortia have gained recognition for accomplishing biological processes with improved effectiveness. Microbes are indispensable tool in developing bioprocesses for the production of bioenergy and biochemicals while utilizing renewable resources due to technical, economic and environmental advantages. They communicate with specific cohorts in close proximity to promote metabolic cooperation. Use of positive microbial associations has been recognized widely, especially in food industries and bioremediation of toxic compounds and waste materials. Role of microbial associations in developing sustainable energy sources and substitutes for conventional fuels is highly promising with many commercial prospects. Detoxification of chemical contaminants sourced from domestic, agricultural and industrial wastes has also been achieved through microbial catalysis in pure and co-culture systems. Methanotrophs, the sole biological sink of greenhouse gas methane, catalyze the methane monooxygenasemediated oxidation of methane to methanol, a high energy density liquid and key platform chemical to produce commodity chemical compounds and their derivatives. Constructed microbial consortia have positive effects, such as improved biomass, biocatalytic potential, stability etc. In a methanotroph-heterotroph consortium, non-methanotrophs provide key nutrient factors and alleviate the toxicity from the culture. Non-methanotrophic organisms biologically stimulate the growth and activity of methanotrophs via production of growth stimulators. However, methanotrophs in association with co-cultured microorganisms are in need of further exploration and thorough investigation to study their interaction mode and application with improved effectiveness.
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Affiliation(s)
- Rajendra Singh
- Department of Environmental Engineering, Chosun University, Gwangju, 61452, Republic of Korea
| | - Jaewon Ryu
- Department of Energy Convergence, Chosun University, Gwangju, 61452, Republic of Korea
| | - Si Wouk Kim
- Department of Environmental Engineering, Chosun University, Gwangju, 61452, Republic of Korea. .,Department of Energy Convergence, Chosun University, Gwangju, 61452, Republic of Korea.
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7
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Microbial Electrosynthesis I: Pure and Defined Mixed Culture Engineering. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2019; 167:181-202. [PMID: 29071400 DOI: 10.1007/10_2017_17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In the past 6 years, microbial bioelectrochemistry has strongly increased in attraction and audience when expanding from mainly environmental technology applications to biotechnology. In particular, the promise to combine electrosynthesis with microbial catalysis opens attractive approaches for new sustainable redox-cofactor recycling, redox-balancing, or even biosynthesis processes. Much of this promise is still not fulfilled, but it has opened and fueled entirely new research areas in this discipline. Activities in designing, tailoring, and applying specific microbial catalysts as pure or defined co-cultures for defined target bioproductions are greatly accelerating. This chapter gives an overview of the current progress as well as the emerging trends in molecular and ecological engineering of defined microbial biocatalysts to prepare them for evolving microbial electrosynthesis processes. In addition, the multitude of microbial electrosynthetic processes with complex undefined mixed cultures is covered by ter Heijne et al. (Adv Biochem Eng Biotechnol. https://doi.org/10.1007/10_2017_15 , 2017). Graphical Abstract.
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8
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Li B, Dunham SJB, Ellis JF, Lange JD, Smith JR, Yang N, King TL, Amaya KR, Arnett CM, Sweedler JV. A Versatile Strategy for Characterization and Imaging of Drip Flow Microbial Biofilms. Anal Chem 2018; 90:6725-6734. [PMID: 29723465 DOI: 10.1021/acs.analchem.8b00560] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The inherent architectural and chemical complexities of microbial biofilms mask our understanding of how these communities form, survive, propagate, and influence their surrounding environment. Here we describe a simple and versatile workflow for the cultivation and characterization of model flow-cell-based microbial ecosystems. A customized low-shear drip flow reactor was designed and employed to cultivate single and coculture flow-cell biofilms at the air-liquid interface of several metal surfaces. Pseudomonas putida F1 and Shewanella oneidensis MR-1 were selected as model organisms for this study. The utility and versatility of this platform was demonstrated via the application of several chemical and morphological imaging techniques-including matrix-assisted laser desorption/ionization mass spectrometry imaging, secondary ion mass spectrometry imaging, and scanning electron microscopy-and through the examination of model systems grown on iron substrates of varying compositions. Implementation of these techniques in combination with tandem mass spectrometry and a two-step imaging principal component analysis strategy resulted in the identification and characterization of 23 lipids and 3 oligosaccharides in P. putida F1 biofilms, the discovery of interaction-specific analytes, and the observation of several variations in cell and substrate morphology present during microbially influenced corrosion. The presented workflow is well-suited for examination of both single and multispecies drip flow biofilms and offers a platform for fundamental inquiries into biofilm formation, microbe-microbe interactions, and microbially influenced corrosion.
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Affiliation(s)
- Bin Li
- Department of Chemistry and Beckman Institute for Advanced Science and Technology , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States
| | - Sage J B Dunham
- Department of Chemistry and Beckman Institute for Advanced Science and Technology , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States
| | - Joanna F Ellis
- Department of Chemistry and Beckman Institute for Advanced Science and Technology , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States
| | - Justin D Lange
- Engineer Research and Development Center-Construction Engineering Research Laboratory (ERDC-CERL) , Champaign , Illinois 61822 , United States
| | - Justin R Smith
- Engineer Research and Development Center-Construction Engineering Research Laboratory (ERDC-CERL) , Champaign , Illinois 61822 , United States
| | - Ning Yang
- Department of Chemistry and Beckman Institute for Advanced Science and Technology , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States
| | - Travis L King
- Engineer Research and Development Center-Construction Engineering Research Laboratory (ERDC-CERL) , Champaign , Illinois 61822 , United States
| | - Kensey R Amaya
- Engineer Research and Development Center-Construction Engineering Research Laboratory (ERDC-CERL) , Champaign , Illinois 61822 , United States
| | - Clint M Arnett
- Engineer Research and Development Center-Construction Engineering Research Laboratory (ERDC-CERL) , Champaign , Illinois 61822 , United States
| | - Jonathan V Sweedler
- Department of Chemistry and Beckman Institute for Advanced Science and Technology , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States
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9
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Liu T, Yu YY, Chen T, Chen WN. A synthetic microbial consortium of Shewanella
and Bacillus
for enhanced generation of bioelectricity. Biotechnol Bioeng 2016; 114:526-532. [DOI: 10.1002/bit.26094] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 08/23/2016] [Accepted: 08/29/2016] [Indexed: 01/26/2023]
Affiliation(s)
- Ting Liu
- School of Chemical and Biomedical Engineering; Nanyang Technological University; 62 Nanyang Drive 637457 Singapore
- Residues and Resource Reclamation Centre; Nanyang Environment and Water Research Institute; Nanyang Technological University; Singapore
| | - Yang-Yang Yu
- School of the Environment; Biofuels Institute; Jiangsu University; Zhenjiang Jiangsu China
| | - Tao Chen
- Key Laboratory of Systems Bioengineering (Ministry of Education); School of Chemical Engineering & Technology; Tianjin University; Tianjin China
| | - Wei Ning Chen
- School of Chemical and Biomedical Engineering; Nanyang Technological University; 62 Nanyang Drive 637457 Singapore
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10
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Formation and characterization of extracellular polymeric substance from Shewanella xiamenensis BC01 under calcium stimulation. J Taiwan Inst Chem Eng 2015. [DOI: 10.1016/j.jtice.2015.05.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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Ngaw CK, Wang VB, Liu Z, Zhou Y, Kjelleberg S, Zhang Q, Tan TTY, Loo SCJ. Enhancement in hydrogen evolution using Au-TiO 2 hollow spheres with microbial devices modified with conjugated oligoelectrolytes. NPJ Biofilms Microbiomes 2015; 1:15020. [PMID: 28721235 PMCID: PMC5515218 DOI: 10.1038/npjbiofilms.2015.20] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 08/16/2015] [Accepted: 08/20/2015] [Indexed: 11/15/2022] Open
Abstract
Objective: Although photoelectrochemical (PEC) water splitting heralds the emergence of the hydrogen economy, the need for external bias and low efficiency stymies the widespread application of this technology. By coupling water splitting (in a PEC cell) to a microbial fuel cell (MFC) using Escherichia coli as the biocatalyst, this work aims to successfully demonstrate a sustainable hybrid PEC–MFC platform functioning solely by biocatalysis and solar energy, at zero bias. Through further chemical modification of the photo-anode (in the PEC cell) and biofilm (in the MFC), the performance of the hybrid system is expected to improve in terms of the photocurrent generated and hydrogen evolved. Methods: The hybrid system constitutes the interconnected PEC cell with the MFC. Both PEC cell and MFC are typical two-chambered systems housing the anode and cathode. Au-TiO2 hollow spheres and conjugated oligoelectrolytes were synthesised chemically and introduced to the PEC cell and MFC, respectively. Hydrogen evolution measurements were performed in triplicates. Results: The hybrid PEC–MFC platform generated a photocurrent density of 0.35 mA/cm2 (~70× enhancement) as compared with the stand-alone P25 standard PEC cell (0.005 mA/cm2) under one-sun illumination (100 mW/cm2) at zero bias (0 V vs. Pt). This increase in photocurrent density was accompanied by continuous H2 production. No H2 was observed in the P25 standard PEC cell whereas H2 evolution rate was ~3.4 μmol/h in the hybrid system. The remarkable performance is attributed to the chemical modification of E. coli through the incorporation of novel conjugated oligoelectrolytes in the MFC as well as the lower recombination rate and higher photoabsorption capabilities in the Au-TiO2 hollow spheres electrode. Conclusions: The combined strategy of photo-anode modification in PEC cells and chemically modified MFCs shows great promise for future exploitation of such synergistic effects between MFCs and semiconductor-based PEC water splitting.
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Affiliation(s)
- Chee Keong Ngaw
- Energy Research Institute @ NTU (ERI@N), Interdisciplinary Graduate School, Nanyang Technological University, Singapore, Singapore.,Solar Fuels Laboratory, School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore.,Solar Fuels Laboratory, School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Victor Bochuan Wang
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore.,Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore, Singapore
| | - Zhengyi Liu
- Solar Fuels Laboratory, School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore
| | - Yi Zhou
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Staffan Kjelleberg
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore, Singapore.,School of Biotechnology and Biomolecular Sciences and Centre for Marine Bio-Innovation, The University of New South Wales, Sydney, New South Wales, Australia
| | - Qichun Zhang
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Timothy Thatt Yang Tan
- Solar Fuels Laboratory, School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore
| | - Say Chye Joachim Loo
- Solar Fuels Laboratory, School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore.,School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore.,Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore, Singapore
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12
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Shi W, Wang VB, Zhao CE, Zhang Q, Loo SCJ, Yang L, Xu C. Anditalea andensis ANESC-ST--An Alkaliphilic Halotolerant Bacterium Capable of Electricity Generation under Alkaline-Saline Conditions. PLoS One 2015; 10:e0132766. [PMID: 26171779 PMCID: PMC4501810 DOI: 10.1371/journal.pone.0132766] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 06/18/2015] [Indexed: 11/19/2022] Open
Abstract
A great challenge in wastewater bioremediation is the sustained activity of viable microorganisms, which can contribute to the breakdown of waste contaminants, especially in alkaline pH conditions. Identification of extremophiles with bioremediation capability can improve the efficiency of wastewater treatment. Here, we report the discovery of an electrochemically active alkaliphilic halotolerant bacterium, Anditalea andensis ANESC-ST (=CICC10485T=NCCB 100412T), which is capable of generating bioelectricity in alkaline-saline conditions. A. andensis ANESC-ST was shown to grow in alkaline conditions between pH 7.0-11.0 and also under high salt condition (up to 4 wt% NaCl). Electrical output was further demonstrated in microbial fuel cells (MFCs) with an average current density of ~0.5 µA/cm2, even under the harsh condition of 4 wt% NaCl and pH 9.0. Subsequent introduction of secreted extracellular metabolites into MFCs inoculated with Escherichia coli or Pseudomonas aeruginosa yielded enhanced electrical output. The ability of A. andensis ANESC-ST to generate energy under alkaline-saline conditions points towards a solution for bioelectricity recovery from alkaline-saline wastewater. This is the first report of A.andensis ANESC-ST producing bioelectricity at high salt concentration and pH.
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Affiliation(s)
- Wei Shi
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, National Jiangsu Synergistic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Victor Bochuan Wang
- Singapore Centre on Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, 637551, Singapore
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Cui-E Zhao
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Qichun Zhang
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Say Chye Joachim Loo
- Singapore Centre on Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, 637551, Singapore
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Liang Yang
- Singapore Centre on Environmental Life Sciences Engineering, Nanyang Technological University, Singapore, 637551, Singapore
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
- * E-mail: (CX); (LY)
| | - Chenjie Xu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore
- * E-mail: (CX); (LY)
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Zhao CE, Wu J, Kjelleberg S, Loo JSC, Zhang Q. Employing a Flexible and Low-Cost Polypyrrole Nanotube Membrane as an Anode to Enhance Current Generation in Microbial Fuel Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:3440-3443. [PMID: 25828694 DOI: 10.1002/smll.201403328] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Revised: 02/23/2015] [Indexed: 06/04/2023]
Abstract
The flexible and low-cost polypyrrole nanotube membrane is demonstrated as a promising anode in microbial fuel cells, which significantly enhances the extracellular electron transfer between Shewanella oneidensis MR-1 and the electrode, owing to the large active surface area and high electrical conductivity.
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Affiliation(s)
- Cui-e Zhao
- School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore
| | - Jiansheng Wu
- School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore
| | - Staffan Kjelleberg
- Singapore Centre on Environment Life Sciences Engineering, Nanyang Technological University, 60 Nanyang Drive, 637551, Singapore
- School of Biotechnology and Biomolecular Sciences and Centre for Marine Bio-innovation, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Joachim Say Chey Loo
- School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore
- Singapore Centre on Environment Life Sciences Engineering, Nanyang Technological University, 60 Nanyang Drive, 637551, Singapore
| | - Qichun Zhang
- School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
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Yuan H, He Z. Graphene-modified electrodes for enhancing the performance of microbial fuel cells. NANOSCALE 2015; 7:7022-7029. [PMID: 25465393 DOI: 10.1039/c4nr05637j] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Graphene is an emerging material with superior physical and chemical properties, which can benefit the development of microbial fuel cells (MFC) in several aspects. Graphene-based anodes can enhance MFC performance with increased electron transfer efficiency, higher specific surface area and more active microbe-electrode-electrolyte interaction. For cathodic processes, oxygen reduction reaction is effectively catalyzed by graphene-based materials because of a favorable pathway and an increase in active sites and conductivity. Despite challenges, such as complexity in synthesis and property degeneration, graphene-based electrodes will be promising for developing MFCs and other bioelectrochemical systems to achieve sustainable water/wastewater treatment and bioenergy production.
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Affiliation(s)
- Heyang Yuan
- Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA.
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15
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Zhao CE, Wu J, Ding Y, Wang VB, Zhang Y, Kjelleberg S, Loo JSC, Cao B, Zhang Q. Hybrid Conducting Biofilm with Built-in Bacteria for High-Performance Microbial Fuel Cells. ChemElectroChem 2015. [DOI: 10.1002/celc.201402458] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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A Highly Efficient Mixed-culture Biofilm as Anodic Catalyst and Insights into Its Enhancement through Electrochemistry by Comparison with G. sulfurreducens. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2014.12.152] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Synergistic microbial consortium for bioenergy generation from complex natural energy sources. ScientificWorldJournal 2014; 2014:139653. [PMID: 25097866 PMCID: PMC4109225 DOI: 10.1155/2014/139653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 06/16/2014] [Indexed: 11/24/2022] Open
Abstract
Microbial species have evolved diverse mechanisms for utilization of complex carbon sources. Proper combination of targeted species can affect bioenergy production from natural waste products. Here, we established a stable microbial consortium with Escherichia coli and Shewanella oneidensis in microbial fuel cells (MFCs) to produce bioenergy from an abundant natural energy source, in the form of the sarcocarp harvested from coconuts. This component is mostly discarded as waste. However, through its usage as a feedstock for MFCs to produce useful energy in this study, the sarcocarp can be utilized meaningfully. The monospecies S. oneidensis system was able to generate bioenergy in a short experimental time frame while the monospecies E. coli system generated significantly less bioenergy. A combination of E. coli and S. oneidensis in the ratio of 1 : 9 (v : v) significantly enhanced the experimental time frame and magnitude of bioenergy generation. The synergistic effect is suggested to arise from E. coli and S. oneidensis utilizing different nutrients as electron donors and effect of flavins secreted by S. oneidensis. Confocal images confirmed the presence of biofilms and point towards their importance in generating bioenergy in MFCs.
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