51
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Arulmani SRB, Gnanamuthu HL, Kandasamy S, Govindarajan G, Alsehli M, Elfasakhany A, Pugazhendhi A, Zhang H. Sustainable bioelectricity production from Amaranthus viridis and Triticum aestivum mediated plant microbial fuel cells with efficient electrogenic bacteria selections. Process Biochem 2021. [DOI: 10.1016/j.procbio.2021.04.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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52
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Microbial Fuel Cell for Energy Production, Nutrient Removal and Recovery from Wastewater: A Review. Processes (Basel) 2021. [DOI: 10.3390/pr9081318] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The world is facing serious threats from the depletion of non-renewable energy resources, freshwater shortages and food scarcity. As the world population grows, the demand for fresh water, energy, and food will increase, and the need for treating and recycling wastewater will rise. In the past decade, wastewater has been recognized as a resource as it primarily consists of water, energy-latent organics and nutrients. Microbial fuel cells (MFC) have attracted considerable attention due to their versatility in their applications in wastewater treatment, power generation, toxic pollutant removal, environmental monitoring sensors, and more. This article provides a review of MFC technologies applied to the removal and/or recovery of nutrients (such as P and N), organics (COD), and bioenergy (as electricity) from various wastewaters. This review aims to provide the current perspective on MFCs, focusing on the recent advancements in the areas of nutrient removal and/or recovery with simultaneous power generation.
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53
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Li X, Lee HS, Wang Z, Lee J. State-of-the-art management technologies of dissolved methane in anaerobically-treated low-strength wastewaters: A review. WATER RESEARCH 2021; 200:117269. [PMID: 34091220 DOI: 10.1016/j.watres.2021.117269] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 05/12/2021] [Accepted: 05/14/2021] [Indexed: 06/12/2023]
Abstract
The recent advancement in low temperature anaerobic processes shows a great promise for realizing low-energy-cost, sustainable mainstream wastewater treatment. However, the considerable loss of the dissolved methane from anaerobically-treated low-strength wastewater significantly compromises the energy potential of the anaerobic processes and poses an environmental risk. In this review, the promises and challenges of existing and emerging technologies for dissolved methane management are examined: its removal, recovery, and on-site reuse. It begins by describing the working principles of gas-stripping and biological oxidation for methane removal, membrane contactors and vacuum degassers for methane recovery, and on-site biological conversion of dissolved methane into electricity or value-added biochemicals as direct energy sources or energy-compensating substances. A comparative assessment of these technologies in the three categories is presented based on methane treating efficiency, energy-production potential, applicability, and scalability. Finally, current research needs and future perspectives are highlighted to advance the future development of an economically and technically sustainable methane-management technology.
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Affiliation(s)
- Xuesong Li
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Hyung-Sool Lee
- Department of Civil and Environmental Engineering, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
| | - Zhiwei Wang
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Jongho Lee
- Department of Civil Engineering, University of British Columbia, Vancouver, British Columbia, Canada, V6T 1Z4.
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54
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Huang T, Junjun T, Liu W, Song D, Yin LX, Zhang S. Biotreatment for the spent lithium-ion battery in a three-module integrated microbial-fuel-cell recycling system. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 126:377-387. [PMID: 33819901 DOI: 10.1016/j.wasman.2021.03.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 01/22/2021] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
A bio-electrochemically (BE) recycling platform was assembled to recover Li and Co from the cathodic materials of spent LIBs in one integrated system. The BE platform consists of three microbial-fuel-cell (MFC) subsystems, including MFC-A, MFC-B, and MFC-C. Co and Li were smoothly recovered from the cathodic materials in the assembled platform. The initial pH and the loading ratios of LiCoO2 both significantly influenced the leaching efficiencies of Li and Co in MFC-A. Approximately 45% Li and 93% Co were simultaneously released through the reduction of LiCoO2 at the initial pH of 1 and the loading ratios of LiCoO2 of 0.2 g/L. The (NH4)2C2O4-modified granular activated carbons (GAC) with a thickness of 1.5 cm was favorably stacked adjacent to the cathode of the MFC-B system. About 98% of removal efficiency (RECo1) and 96% of recovery efficiency (RECo2) of Co were achieved in MFC-B under optimum conditions. The dosing concentration of Li+ lower than 2 mg/L and the (NH4)2CO3 of 0.01-0.02 M were conducive to enhancing the recovery of Li from raffinate and guaranteed the higher power output and coulombic efficiencies in MFC-C. The continuous release of CO2 caused by exoelectrogenic microorganisms on the biofilm facilitated the precipitation of Li2CO3.
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Affiliation(s)
- Tao Huang
- School of Materials Engineering, Changshu Institute of Technology, 215500, China; Suzhou Key Laboratory of Functional Ceramic Materials, Changshu Institute of Technology, Changshu 215500, China; School of Chemical Engineering & Technology China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
| | - Tao Junjun
- School of Materials Engineering, Changshu Institute of Technology, 215500, China.
| | - Wanhui Liu
- School of Materials Engineering, Changshu Institute of Technology, 215500, China; Suzhou Key Laboratory of Functional Ceramic Materials, Changshu Institute of Technology, Changshu 215500, China.
| | - Dongping Song
- School of Materials Engineering, Changshu Institute of Technology, 215500, China
| | - Li-Xin Yin
- School of Economics and Management, Changshu Institute of Technology, No. 99, South 3rd Ring Road, Changshu 215500, China.
| | - Shuwen Zhang
- Nuclear Resources Engineering College, University of South China, 421001, China
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55
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Bimetallic oxide MnFe 2O 4 modified carbon felt anode by drip coating: an effective approach enhancing power generation performance of microbial fuel cell. Bioprocess Biosyst Eng 2021; 44:1119-1130. [PMID: 33555380 DOI: 10.1007/s00449-021-02511-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Accepted: 01/05/2021] [Indexed: 10/22/2022]
Abstract
The anode electrode of microbial fuel cell (MFC) is the key component to determine its power generation performance because it is the habitat and electron transfer center of the electricity-producing microorganisms. Carbon-based anodes have been confirmed to improve MFC performance. Its large surface area, excellent conductivity and low cost make it very suitable for electrode materials used in MFC. However, the low biocompatibility and instability of common carbon-based materials restrict their practical application in MFC. In this work, a bimetal oxide MnFe2O4 was prepared and used to modify carbon felt anode by a simple drop coating method. The influence of the amount of MnFe2O4 material on the performance of MFC was systematically studied. The results showed that the power density of the carbon felt anode with a MnFe2O4 modified amount of 1 mg/cm2 increased by 66.9% compared with the unmodified anode. Meanwhile, the MFC cycle using MnFe2O4 modified anode was more stable. After 6 months of long-term operation, the power density reached 3836 mW/m2. The anode modified by MnFe2O4 has capacitance characteristics, good biocompatibility and fast electron transmission rate, which significantly improves the power generation performance of MFC. In addition, the use of a simple drop coating method to prepare electrodes can reduce the difficulty of electrode fabrication and the cost of MFC, laying a certain foundation for the industrialization of MFC.
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56
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Bejjanki D, Muthukumar K, Radhakrishnan TK, Alagarsamy A, Pugazhendhi A, Naina Mohamed S. Simultaneous bioelectricity generation and water desalination using Oscillatoria sp. as biocatalyst in photosynthetic microbial desalination cell. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 754:142215. [PMID: 32920416 DOI: 10.1016/j.scitotenv.2020.142215] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/02/2020] [Accepted: 09/03/2020] [Indexed: 06/11/2023]
Abstract
Globally, the scarcity of drinking water has triggered the researchers towards the development of desalination techniques to turn up saline water into potable. Microbial Desalination Cell (MDC) is a novel green technology that shows potential approach for desalination along with electricity generation and wastewater treatment. However, the expensive catholyte/catalyst in the cathode side has limited the MDC for real time application. Hence, the main objective of this work was to investigate the electricity generation during dairy wastewater treatment and desalination efficiency using biocathode (Oscillatoria sp.) in the MDC. The results showed that the maximum open circuit voltage of 652 ± 10 mV, COD removal efficiency of 80.2 ± 0.5% and desalination efficiency of 65.8 ± 0.5%, were achieved respectively. The effect of saline water concentration was investigated and the performance of MDC was compared with real (sea) water. This study demonstrated that Oscillatoria sp. could be used as a potential biocatalyst in the cathode chamber for enhancing salinity removal along with electricity generation and wastewater treatment in the MDC.
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Affiliation(s)
- Dinesh Bejjanki
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India
| | - K Muthukumar
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India
| | - T K Radhakrishnan
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India
| | - Arun Alagarsamy
- Bioenergy and Bioremediation Laboratory, Department of Microbiology, Alagappa University, Karaikudi, Tamil Nadu, India
| | - Arivalagan Pugazhendhi
- Innovative Green Product Synthesis and Renewable Environment Development Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
| | - Samsudeen Naina Mohamed
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India.
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57
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Munoz-Cupa C, Hu Y, Xu C, Bassi A. An overview of microbial fuel cell usage in wastewater treatment, resource recovery and energy production. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 754:142429. [PMID: 33254845 DOI: 10.1016/j.scitotenv.2020.142429] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 09/04/2020] [Accepted: 09/15/2020] [Indexed: 06/12/2023]
Abstract
Wastewater treatment is a high-cost and energy-intensive process not only due to large amounts of pollutants but also for the large volumes of water to be treated, which are mainly generated by human activities and different industries. In this regard, biological wastewater treatments have become substitutes to the current technologies, owing to the improved treatment efficiency and added value. Microbial fuel cells (MFCs) as one of the promising biological treatments have arisen as a viable solution for chemical oxygen demand (COD) removal and electricity generation simultaneously. Therefore, in this article, the effects of various operating conditions on the COD removal and power production from MFCs are thoroughly discussed. In addition, the advantages and weaknesses of current MFCs technologies used for different types of wastewater are summarized. Finally, the technical barriers facing by MFCs operation and the economic feasibility of using MFCs for wastewater treatment are provided.
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Affiliation(s)
- Carlos Munoz-Cupa
- Department of Chemical and Biochemical Engineering, Western University, London, ON N6A 0A7, Canada
| | - Yulin Hu
- Department of Chemical and Biochemical Engineering, Western University, London, ON N6A 0A7, Canada.
| | - Chunbao Xu
- Department of Chemical and Biochemical Engineering, Western University, London, ON N6A 0A7, Canada
| | - Amarjeet Bassi
- Department of Chemical and Biochemical Engineering, Western University, London, ON N6A 0A7, Canada.
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58
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Antolini E. Lignocellulose, Cellulose and Lignin as Renewable Alternative Fuels for Direct Biomass Fuel Cells. CHEMSUSCHEM 2021; 14:189-207. [PMID: 32991061 DOI: 10.1002/cssc.202001807] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/27/2020] [Indexed: 06/11/2023]
Abstract
In recent years the use of renewable sources, such as lignocellulosic biomass (LCB), as the fuel for various types of fuel cells received growing interest. Different types of fuel cells, that is, operated at low temperatures (T<100 °C; microbial fuel cells (MFC), alkaline (AFCs) and flow fuel cells (FFCs)), intermediate temperatures (T in the range 150-300 °C, proton-conducting inorganic-organic composite membrane fuel cells), and high temperatures (T≥500 °C, direct carbon fuel cells (DCFCs)), have been used for the conversion of the chemical energy in LCB to electrical energy. The economic advantage of the direct use of LCB consists of avoiding the acid hydrolysis of cellulose to glucose for low-temperature fuel cells and the pretreatment at high temperatures necessary to convert biomass to biochar (pyrolysis) in the case of high-temperature fuel cells. In this Review, the characteristics of direct biomass fuel cells are presented and their performance is compared with that of indirect biomass fuel cells fed with glucose (low-temperature fuel cells) and biochar (high-temperature fuel cells).
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Affiliation(s)
- Ermete Antolini
- Scuola di Scienza dei Materiali, Via 25 aprile 22, Cogoleto, 16016, Genova, Italy
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59
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Meena M, Sonigra P, Yadav G, Barupal T. Wastewater Treatment Techniques: An Introduction. REMOVAL OF EMERGING CONTAMINANTS THROUGH MICROBIAL PROCESSES 2021:161-182. [DOI: 10.1007/978-981-15-5901-3_8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
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60
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Bolognesi S, Cecconet D, Callegari A, Capodaglio AG. Combined microalgal photobioreactor/microbial fuel cell system: Performance analysis under different process conditions. ENVIRONMENTAL RESEARCH 2021; 192:110263. [PMID: 33035559 DOI: 10.1016/j.envres.2020.110263] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 08/27/2020] [Accepted: 09/20/2020] [Indexed: 05/12/2023]
Abstract
Increasing energy demands and greenhouse gases emission from wastewater treatment processes prompted the investigation of alternatives capable to achieve effective treatment, energy and materials recovery, and reduce environmental footprint. Combination of microbial fuel cell (MFC) technology with microalgal-based process in MFC-PBR (photobioreactor) systems could reduce greenhouse gases emissions from wastewater treatment facilities, capturing CO2 emitted from industrial facilities or directly from the atmosphere. Microalgae production could enhance recovery of wastewater-embedded resources. Two system MFC-PBR configurations were tested and compared with a control MFC, under different operating conditions, using both synthetic and agro-industrial wastewater as anolytes. COD removal efficiency (ηCOD) and energy production were monitored during every condition tested, reaching ηCOD values up to 99%. Energy recovery efficiency and energy losses were also evaluated. The system equipped with microalgal biocathode proved to be capable to efficiently treat real wastewater, surpassing the effectiveness of the control unit under specific conditions. Oxygen provided by the algae improves the overall energy balance of this system, which could be further enhanced by many possible resources recovery opportunities presented by post-processing of the cathodic effluent.
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Affiliation(s)
- Silvia Bolognesi
- Department of Civil Engineering and Architecture, University of Pavia, Via Adolfo Ferrata 3, 27100, Pavia, Italy; LEQUiA, Institute of the Environment, Universitat de Girona, 69, M(a) Aurèlia Capmany, Girona, 17003, Spain.
| | - Daniele Cecconet
- Department of Civil Engineering and Architecture, University of Pavia, Via Adolfo Ferrata 3, 27100, Pavia, Italy; Department of Chemistry, University of Pavia, Viale Torquato Taramelli 12, 27100, Pavia, Italy
| | - Arianna Callegari
- Department of Civil Engineering and Architecture, University of Pavia, Via Adolfo Ferrata 3, 27100, Pavia, Italy
| | - Andrea G Capodaglio
- Department of Civil Engineering and Architecture, University of Pavia, Via Adolfo Ferrata 3, 27100, Pavia, Italy
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61
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Budihardjo MA, Effendi AJ, Hidayat S, Purnawan C, Lantasi AID, Muhammad FI, Ramadan BS. Waste valorization using solid-phase microbial fuel cells (SMFCs): Recent trends and status. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 277:111417. [PMID: 33027734 DOI: 10.1016/j.jenvman.2020.111417] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 08/28/2020] [Accepted: 09/18/2020] [Indexed: 06/11/2023]
Abstract
This review article discusses the use of solid waste processed in solid-phase microbial fuel cells (SMFCs) as a source of electrical energy. Microbial Fuel Cells (MFCs) are typically operated in the liquid phase because the ion transfer process is efficient in liquid media. Nevertheless, some researchers have considered the potential for MFCs in solid phases (particularly for treating solid waste). This has promise if several important factors are optimized, such as the type and amount of substrate, microorganism community, system configuration, and type and number of electrodes, which increases the amount of electricity generated. The critical factor that affects the SMFC performance is the efficiency of electron and proton transfer through solid media. However, this limitation may be overcome by electrode system enhancements and regular substrate mixing. The integration of SMFCs with other conventional solid waste treatments could be used to produce sustainable green energy. Although SMFCs produce relatively small amounts of energy compared with other waste-to-energy treatments, SMFCs are still promising to achieve zero-emission treatment. Therefore, this article addresses the challenges and fills the gaps in SMFC research and development.
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Affiliation(s)
- Mochamad Arief Budihardjo
- Department of Environmental Engineering, Faculty of Engineering, Universitas Diponegoro, Semarang, 50277, Indonesia.
| | - Agus Jatnika Effendi
- Department of Environmental Engineering, Faculty of Environmental and Civil Engineering, Institut Teknologi Bandung, Bandung, 40132, Indonesia.
| | - Syarif Hidayat
- Department of Environmental Engineering, Faculty of Environmental and Civil Engineering, Institut Teknologi Bandung, Bandung, 40132, Indonesia.
| | - Candra Purnawan
- Department of Chemical Sciences, Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret, 57126, Indonesia.
| | - Ayudya Izzati Dyah Lantasi
- Master of Environmental Sciences, School of Postgraduate Studies, Universitas Diponegoro, Semarang, 50241, Indonesia.
| | - Fadel Iqbal Muhammad
- Master of Environmental Sciences, Wageningen University and Research, Wageningen, 6708, GA, the Netherlands.
| | - Bimastyaji Surya Ramadan
- Department of Environmental Engineering, Faculty of Engineering, Universitas Diponegoro, Semarang, 50277, Indonesia.
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62
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Shindhal T, Rakholiya P, Varjani S, Pandey A, Ngo HH, Guo W, Ng HY, Taherzadeh MJ. A critical review on advances in the practices and perspectives for the treatment of dye industry wastewater. Bioengineered 2020; 12:70-87. [PMID: 33356799 PMCID: PMC8806354 DOI: 10.1080/21655979.2020.1863034] [Citation(s) in RCA: 168] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
Rapid industrialization has provided comforts to mankind but has also impacted the environment harmfully. There has been severe increase in the pollution due to several industries, in particular due to dye industry, which generate huge quantities of wastewater containing hazardous chemicals. Although tremendous developments have taken place for the treatment and management of such wastewater through chemical or biological processes, there is an emerging shift in the approach, with focus shifting on resource recovery from such wastewater and also their management in sustainable manner. This review article aims to present and discuss the most advanced and state-of-art technical and scientific developments about the treatment of dye industry wastewater, which include advanced oxidation process, membrane filtration technique, microbial technologies, bio-electrochemical degradation, photocatalytic degradation, etc. Among these technologies, microbial degradation seems highly promising for resource recovery and sustainability and has been discussed in detail as a promising approach. This paper also covers the challenges and future perspectives in this field.
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Affiliation(s)
- Toral Shindhal
- Paryavaran Bhavan, Gujarat Pollution Control Board , Gandhinagar, India.,Biotechnology Department, Kadi Sarva Vishwavidyalaya , Gandhinagar, India
| | - Parita Rakholiya
- Paryavaran Bhavan, Gujarat Pollution Control Board , Gandhinagar, India.,Biotechnology Department, Kadi Sarva Vishwavidyalaya , Gandhinagar, India
| | - Sunita Varjani
- Paryavaran Bhavan, Gujarat Pollution Control Board , Gandhinagar, India
| | - Ashok Pandey
- Centre of Innovation and Translation Research, CSIR-Indian Institute of Toxicology Research , Lucknow, India
| | - Huu Hao Ngo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney , Sydney, Australia
| | - Wenshan Guo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney , Sydney, Australia
| | - How Yong Ng
- Department of Civil & Environmental Engineering, National University of Singapore, Environmental Research Institute , Singapore, Singapore
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63
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Zhuang S, Shao C, Ye J, Li B, Wang X. Enhancing oxygen reduction reaction in air-cathode microbial fuel cells treating wastewater with cobalt and nitrogen co-doped ordered mesoporous carbon as cathode catalysts. ENVIRONMENTAL RESEARCH 2020; 191:110195. [PMID: 32919967 DOI: 10.1016/j.envres.2020.110195] [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: 05/30/2020] [Revised: 08/26/2020] [Accepted: 08/29/2020] [Indexed: 06/11/2023]
Abstract
The sluggish oxygen reduction reaction (ORR) on the cathode severely limits the energy conversion efficiency of microbial fuel cells (MFCs). In this study, cobalt and nitrogen co-doped ordered mesoporous carbon (Cox-N-OMC) was prepared by heat-treating a mixture of cobalt nitrate, melamine and ordered mesoporous carbon (OMC). The addition of cobalt nitrate remarkably improved the ORR reactivity, compared to the nitrogen-doped OMC catalyst. By optimizing the dosage of cobalt nitrate (x = 0.6, 0.8 and 1.0 g), the Co0.8-N-OMC catalyst displayed excellent ORR catalytic performances in neutral media with the onset potential of 0.79 V (vs. RHE), half-wave potential of 0.59 V and limiting current density of 5.43 mA/cm2, which was comparable to the commercial Pt/C catalyst (0.86 V, 0.60 V and 4.76 mA/cm2). The high activity of Co0.8-N-OMC catalyst was attributed to the high active surface area, higher total nitrogen amount, and higher relative distribution of graphitic nitrogen and pyrrolic nitrogen species. Furthermore, single chamber microbial fuel cell (SCMFC) with Co0.8-N-OMC cathode exhibited the highest power density of 389 ± 24 mW/m2, chemical oxygen demand (COD) removal of 81.1 ± 2.2% and coulombic efficiency (CE) of 17.2 ± 2.5%. On the other hand, in the Co1.0-N-OMC catalyst, increasing the cobalt dosage from 0.8 to 1.0 g resulted in more oxidized-N species, and the reduced power generation in SCMFC (360 ± 8 mW/m2). The power generated by these catalysts and results of electrochemical evaluation were strongly correlated with the total nitrogen contents on the catalyst surface. This study demonstrated the feasibility of optimizing the dosage of metal to enhance wastewater treatment capacity.
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Affiliation(s)
- Shiguang Zhuang
- Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Chunfeng Shao
- Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Jianshan Ye
- Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Baitao Li
- Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China.
| | - Xiujun Wang
- Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China.
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64
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Jiao Y, Hu Y, Han L, Zhou M. Activated Carbon Derived from Rice Husk as Efficient Oxygen Reduction Catalyst in Microbial Fuel Cell. ELECTROANAL 2020. [DOI: 10.1002/elan.202060409] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Yongli Jiao
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering Nankai University Tianjin 300350 China
| | - Youshuang Hu
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering Nankai University Tianjin 300350 China
| | - Lujie Han
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering Nankai University Tianjin 300350 China
| | - Minghua Zhou
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering Nankai University Tianjin 300350 China
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65
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Chen H, Simoska O, Lim K, Grattieri M, Yuan M, Dong F, Lee YS, Beaver K, Weliwatte S, Gaffney EM, Minteer SD. Fundamentals, Applications, and Future Directions of Bioelectrocatalysis. Chem Rev 2020; 120:12903-12993. [DOI: 10.1021/acs.chemrev.0c00472] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Hui Chen
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Olja Simoska
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Koun Lim
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Matteo Grattieri
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Mengwei Yuan
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Fangyuan Dong
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Yoo Seok Lee
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Kevin Beaver
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Samali Weliwatte
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Erin M. Gaffney
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Shelley D. Minteer
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
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66
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Dynamic analysis and split range control for maximization of operating range of continuous microbial fuel cell. Chin J Chem Eng 2020. [DOI: 10.1016/j.cjche.2020.06.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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67
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Sonawane JM, Ezugwu CI, Ghosh PC. Microbial Fuel Cell-Based Biological Oxygen Demand Sensors for Monitoring Wastewater: State-of-the-Art and Practical Applications. ACS Sens 2020; 5:2297-2316. [PMID: 32786393 DOI: 10.1021/acssensors.0c01299] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Environmental pollution has been a continuous threat to sustainable development and global well-being. It has become a significant concern worldwide to combat the ecological crisis using low-cost innovative technologies. Biological oxygen demand (BOD) is a key indicator to comprehend the quality of water to guarantee environmental safety and human health; however, none of the present technologies are capable of online monitoring of the water at the source. Microbial fuel cells (MFC) are a promising technology for simultaneous power generation and wastewater treatment. MFCs have also been shown in fascinating applications to measure and detect the toxic pollutants present in wastewater. These are the bioreactors where exoelectrogenic microorganisms catalyze the conversion of the inherent chemical energy stored in organic compounds to electrical energy. Sensors employ energy conversion to measure BOD, which is considered an international index for the detection of organic material load present in wastewater. The MFC-based BOD sensors have gone through a wide range of advancement from mediator to mediator-less, double chamber to single-chamber, and large size to miniature. There have been detailed studies to improve the accuracy and reproducibility of the sensors for commercial applications. Additionally, multistage MFC-based BOD biosensors and miniature MFC-BOD sensors have also been ubiquitous in recent years. A considerable amount of work has been carried out to improve the performance of these devices by fabricating the proton exchange membranes and altering catalysts at the cathode. However, there remains a dearth for the fabrication of the devices in aspects like suitable microbes, proton exchange membranes, and cheaper catalysts for cathodes for effective real-time monitoring of wastewater. In this review, an extensive study has been carried out on various MFC-based BOD sensors. The efficiency and drawbacks associated with the different MFC-based BOD sensors have been critically evaluated, and future perspectives for their development have been investigated. The breadth of work compiled in this review will accelerate further research in MFC-based BOD biosensors. It will be of great importance to broad ranges of scientific research and industry.
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Affiliation(s)
- Jayesh M. Sonawane
- Department of Chemical Engineering and Applied Chemistry and Centre for Global Engineering, University of Toronto, 200 College Street, Toronto, Ontario M5S 3E5, Canada
| | - Chizoba I. Ezugwu
- Department of Analytical Chemistry, Physical Chemistry, and Chemical Engineering, University of Alcala, E-28871 Alcalá de Henares, Madrid, Spain
| | - Prakash C. Ghosh
- Department of Energy Science and Engineering, Indian Institute of Technology Bombay, Mumbai, India, 400 076
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68
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Sonu K, Sogani M, Syed Z, Dongre A, Sharma G. Effect of Corncob Derived Biochar on Microbial Electroremediation of Dye Wastewater and Bioenergy Generation. ChemistrySelect 2020. [DOI: 10.1002/slct.202002652] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Kumar Sonu
- Department of Civil EngineeringManipal University Jaipur Jaipur Rajasthan 303007 India
| | - Monika Sogani
- Department of Civil EngineeringManipal University Jaipur Jaipur Rajasthan 303007 India
| | - Zainab Syed
- Department of BiosciencesManipal University Jaipur Jaipur Rajasthan 303007 India
| | - Aman Dongre
- Department of BiosciencesManipal University Jaipur Jaipur Rajasthan 303007 India
| | - Gopesh Sharma
- Department of BiosciencesManipal University Jaipur Jaipur Rajasthan 303007 India
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69
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Outlook on the Role of Microbial Fuel Cells in Remediation of Environmental Pollutants with Electricity Generation. Catalysts 2020. [DOI: 10.3390/catal10080819] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A wide variety of pollutants are discharged into water bodies like lakes, rivers, canal, etc. due to the growing world population, industrial development, depletion of water resources, improper disposal of agricultural and native wastes. Water pollution is becoming a severe problem for the whole world from small villages to big cities. The toxic metals and organic dyes pollutants are considered as significant contaminants that cause severe hazards to human beings and aquatic life. The microbial fuel cell (MFC) is the most promising, eco-friendly, and emerging technique. In this technique, microorganisms play an important role in bioremediation of water pollutants simultaneously generating an electric current. In this review, a new approach based on microbial fuel cells for bioremediation of organic dyes and toxic metals has been summarized. This technique offers an alternative with great potential in the field of wastewater treatment. Finally, their applications are discussed to explore the research gaps for future research direction. From a literature survey of more than 170 recent papers, it is evident that MFCs have demonstrated outstanding removal capabilities for various pollutants.
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70
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Cai J, Qaisar M, Sun Y, Wang K, Lou J, Wang R. Coupled substrate removal and electricity generation in microbial fuel cells simultaneously treating sulfide and nitrate at various influent sulfide to nitrate ratios. BIORESOURCE TECHNOLOGY 2020; 306:123174. [PMID: 32197955 DOI: 10.1016/j.biortech.2020.123174] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/06/2020] [Accepted: 03/06/2020] [Indexed: 06/10/2023]
Abstract
The current work coupled simultaneous sulfide and nitrate removal in a Microbial Fuel Cell (MFC). The substrate removal and electricity generation were coupled at influent Sulfide to Nitrate molar ratios (S/N ratios) of 5:0, 5:1, 5:2 and 5:3. The sulfide concentrations used included: 60 mg S/L, 300 mg S/L, 540 mg S/L, 780 mg S/L and 1020 mg S/L. The effect of S/N ratio on the performance of substrate removal was greater at higher influent sulfide concentration. The electricity generation also varied at different influent sulfide concentrations and S/N ratios. The number of electrons generated at S/N ratio of 5:2 was the largest at any fixed influent sulfide concentration. The Pearson correlation showed that effluent sulfate concentration and nitrogen gas had significant positive correlations with steady state voltage (or electronic quantity). Moreover, the simulation models were developed to establish the relation between substrate removal and electricity generation at various S/N ratios.
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Affiliation(s)
- Jing Cai
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China.
| | - Mahmood Qaisar
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Pakistan
| | - Yue Sun
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China
| | - Kaiquan Wang
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China
| | - Juqing Lou
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China
| | - Ruyi Wang
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China
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71
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Yang Z, Yang A. Modelling the impact of operating mode and electron transfer mechanism in microbial fuel cells with two-species anodic biofilm. Biochem Eng J 2020. [DOI: 10.1016/j.bej.2020.107560] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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72
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Gadkari S, Sadhukhan J. A robust correlation based on dimensional analysis to characterize microbial fuel cells. Sci Rep 2020; 10:8407. [PMID: 32439969 PMCID: PMC7242356 DOI: 10.1038/s41598-020-65375-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 04/24/2020] [Indexed: 11/09/2022] Open
Abstract
We present a correlation for determining the power density of microbial fuel cells based on dimensional analysis. Important operational, design and biological parameters are non-dimensionalized using a selection of scaling variables. Experimental data from various microbial fuel cell studies operating over a wide range of system parameters are analyzed to attest accuracy of the model in predicting power output. The correlation predicts nonlinear dependencies between power density, substrate concentration, solution conductivity, external resistance, and electrode spacing. The straightforward applicability without the need for any significant computational resources, while preserving good level of accuracy; makes this correlation useful in focusing the experimental effort for the design and optimization of microbial fuel cells.
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Affiliation(s)
- Siddharth Gadkari
- Centre for Environment and Sustainability, University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom. .,Department of Chemical and Process Engineering, University of Surrey, Guildford, GU2 7XH, United Kingdom.
| | - Jhuma Sadhukhan
- Centre for Environment and Sustainability, University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.,Department of Chemical and Process Engineering, University of Surrey, Guildford, GU2 7XH, United Kingdom
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73
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Towards the Implementation of Circular Economy in the Wastewater Sector: Challenges and Opportunities. WATER 2020. [DOI: 10.3390/w12051431] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The advancement of science has facilitated increase in the human lifespan, reflected in economic and population growth, which unfortunately leads to increased exploitation of resources. This situation entails not only depletion of resources, but also increases environmental pollution, mainly due to atmospheric emissions, wastewater effluents, and solid wastes. In this scenario, it is compulsory to adopt a paradigm change, as far as the consumption of resources by the population is concerned, to achieve a circular economy. The recovery and reuse of resources are key points, leading to a decrease in the consumption of raw materials, waste reduction, and improvement of energy efficiency. This is the reason why the concept of the circular economy can be applied in any industrial activity, including the wastewater treatment sector. With this in view, this review manuscript focuses on demonstrating the challenges and opportunities in applying a circular economy in the water sector. For example, reclamation and reuse of wastewater to increase water resources, by paying particular attention to the risks for human health, recovery of nutrients, or highly added-value products (e.g., metals and biomolecules among others), valorisation of sewage sludge, and/or recovery of energy. Being aware of this situation, in the European, Union 18 out of 27 countries are already reusing reclaimed wastewater at some level. Moreover, many wastewater treatment plants have reached energy self-sufficiency, producing up to 150% of their energy requirements. Unfortunately, many of the opportunities presented in this work are far from becoming a reality. Still, the first step is always to become aware of the problem and work on optimizing the solution to make it possible.
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74
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Yaqoob AA, Mohamad Ibrahim MN, Rafatullah M, Chua YS, Ahmad A, Umar K. Recent Advances in Anodes for Microbial Fuel Cells: An Overview. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E2078. [PMID: 32369902 PMCID: PMC7254385 DOI: 10.3390/ma13092078] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 04/26/2020] [Accepted: 04/29/2020] [Indexed: 11/19/2022]
Abstract
The recycling and treatment of wastewater using microbial fuel cells (MFCs) has been attracting significant attention as a way to control energy crises and water pollution simultaneously. Despite all efforts, MFCs are unable to produce high energy or efficiently treat pollutants due to several issues, one being the anode's material. The anode is one of the most important parts of an MFC. Recently, different types of anode materials have been developed to improve the removal rate of pollutants and the efficiency of energy production. In MFCs, carbon-based materials have been employed as the most commonly preferred anode material. An extensive range of potentials are presently available for use in the fabrication of anode materials and can considerably minimize the current challenges, such as the need for high quality materials and their costs. The fabrication of an anode using biomass waste is an ideal approach to address the present issues and increase the working efficiency of MFCs. Furthermore, the current challenges and future perspectives of anode materials are briefly discussed.
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Affiliation(s)
- Asim Ali Yaqoob
- School of Chemical Sciences, Universiti Sains Malaysia, Penang 11800, Malaysia; (A.A.Y.); (Y.S.C.); (K.U.)
| | | | - Mohd Rafatullah
- School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia;
| | - Yong Shen Chua
- School of Chemical Sciences, Universiti Sains Malaysia, Penang 11800, Malaysia; (A.A.Y.); (Y.S.C.); (K.U.)
| | - Akil Ahmad
- School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia;
| | - Khalid Umar
- School of Chemical Sciences, Universiti Sains Malaysia, Penang 11800, Malaysia; (A.A.Y.); (Y.S.C.); (K.U.)
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75
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Platinum Group Metal-Free Catalysts for Oxygen Reduction Reaction: Applications in Microbial Fuel Cells. Catalysts 2020. [DOI: 10.3390/catal10050475] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Scientific and technological innovation is increasingly playing a role for promoting the transition towards a circular economy and sustainable development. Thanks to its dual function of harvesting energy from waste and cleaning up waste from organic pollutants, microbial fuel cells (MFCs) provide a revolutionary answer to the global environmental challenges. Yet, one key factor that limits the implementation of larger scale MFCs is the high cost and low durability of current electrode materials, owing to the use of platinum at the cathode side. To address this issue, the scientific community has devoted its research efforts for identifying innovative and low cost materials and components to assemble lab-scale MFC prototypes, fed with wastewaters of different nature. This review work summarizes the state-of the-art of developing platinum group metal-free (PGM-free) catalysts for applications at the cathode side of MFCs. We address how different catalyst families boost oxygen reduction reaction (ORR) in neutral pH, as result of an interplay between surface chemistry and morphology on the efficiency of ORR active sites. We particularly review the properties, performance, and applicability of metal-free carbon-based materials, molecular catalysts based on metal macrocycles supported on carbon nanostructures, M-N-C catalysts activated via pyrolysis, metal oxide-based catalysts, and enzyme catalysts. We finally discuss recent progress on MFC cathode design, providing a guidance for improving cathode activity and stability under MFC operating conditions.
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76
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Do MH, Ngo HH, Guo W, Chang SW, Nguyen DD, Liu Y, Varjani S, Kumar M. Microbial fuel cell-based biosensor for online monitoring wastewater quality: A critical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 712:135612. [PMID: 31836209 DOI: 10.1016/j.scitotenv.2019.135612] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 11/17/2019] [Accepted: 11/17/2019] [Indexed: 05/22/2023]
Abstract
Recently, the application of the microbial fuel cell (MFC)-based biosensor for rapid and real-time monitoring wastewater quality is very innovative due to its simple compact design, disposability, and cost-effectiveness. This review represents recent advances in this emerging technology for the management of wastewater quality, where the emphasis is on biochemical oxygen demand, toxicity, and other environmental applications. In addition, the main challenges of this technology are discussed, followed by proposing possible solutions to those challenges based on the existing knowledge of detection principles and signal processing. Potential future research of MFC-based biosensor has been demonstrated in this review.
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Affiliation(s)
- Minh Hang Do
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Huu Hao Ngo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
| | - Wenshan Guo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Soon Woong Chang
- Department of Environmental Energy Engineering, Kyonggi University, 442-760, Republic of Korea
| | - Dinh Duc Nguyen
- Department of Environmental Energy Engineering, Kyonggi University, 442-760, Republic of Korea; Institution of Research and Development, Duy Tan University, Da Nang, Viet Nam
| | - Yiwen Liu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar 382010, Gujarat, India
| | - Mathava Kumar
- Department of Civil Engineering, Indian Institute of Technology Madras, Chennai 600 036, Tamilnadu, India
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77
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Luo S, Fu B, Liu F, He K, Yang H, Ma J, Wang H, Zhang X, Liang P, Huang X. Construction of innovative 3D-weaved carbon mesh anode network to boost electron transfer and microbial activity in bioelectrochemical system. WATER RESEARCH 2020; 172:115493. [PMID: 31978838 DOI: 10.1016/j.watres.2020.115493] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 12/20/2019] [Accepted: 01/07/2020] [Indexed: 06/10/2023]
Abstract
Bioelectrochemical system (BES) is promising technology to simultaneously treat wastewater and recover energy, and electrode material is important for the system performance. Microbial fuel cell (MFC) is one of typical BES to be applied in wastewater treatment. How to improve the electrode material is significant to improve wastewater treatment, energy recovery and cost effectiveness. In this study, 3D-weaved carbon electrode entity, assembled by multiple pieces of carbon mesh (CM), was proposed to combine all electrode components as entity to facilitate electron conduction and ionic migration, compared with carbon brush (CB) and granular activated carbon (GAC). The result showed that current density and internal resistance of MFC using 3D-weaved CM as horizontally extended inside anode (CM(T)) were 30.9 A m-3 and 4.5 Ω, respectively, with higher output than traditional GAC (22.6 A m-3 and 6.2 Ω). Though GAC had greater electrode filling and surface area for biomass growth, the electron transfer efficiency per unit electrode biomass was only at 0.0019 ± 0.0002 mol g-1 d-1, much lower than CM(T) at 0.0077 ± 0.0009 mol g-1 day-1. Higher ionic migration rate of CM(T) suggested the assisting effect of composite electrode to enhance ionic transportation towards the cathode. Microbial analysis further indicated that 3D-CM electrode network could simultaneously enhance Geobacter abundance and methanogen activity, suggesting the importance of electrode network on electricigens. Furthermore, CM(T) could obtain 10 times higher energy output efficiency than traditional GAC when applied inside anode chamber. This study proved that network construction of anode electrode could promote the electrode performance and cost effectiveness, suggesting the future development of reactor design of bioelectrochemical system.
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Affiliation(s)
- Shuai Luo
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Boya Fu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Fubin Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Kai He
- School of Urban Construction, Wuhan University of Science and Technology, Wuhan, 430081, PR China
| | - Heng Yang
- School of Urban Construction, Wuhan University of Science and Technology, Wuhan, 430081, PR China
| | - Junjun Ma
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Han Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Xiaoyuan Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Peng Liang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China.
| | - Xia Huang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China.
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78
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Gajda I, Obata O, Greenman J, Ieropoulos IA. Electroosmotically generated disinfectant from urine as a by-product of electricity in microbial fuel cell for the inactivation of pathogenic species. Sci Rep 2020; 10:5533. [PMID: 32218453 PMCID: PMC7099033 DOI: 10.1038/s41598-020-60626-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 02/14/2020] [Indexed: 02/03/2023] Open
Abstract
This work presents a small scale and low cost ceramic based microbial fuel cell, utilising human urine into electricity, while producing clean catholyte into an initially empty cathode chamber through the process of electro-osmostic drag. It is the first time that the catholyte obtained as a by-product of electricity generation from urine was transparent in colour and reached pH>13 with high ionic conductivity values. The catholyte was collected and used ex situ as a killing agent for the inactivation of a pathogenic species such as Salmonella typhimurium, using a luminometer assay. Results showed that the catholyte solutions were efficacious in the inactivation of the pathogen organism even when diluted up to 1:10, resulting in more than 5 log-fold reduction in 4 min. Long-term impact of the catholyte on the pathogen killing was evaluated by plating Salmonella typhimurium on agar plates and showed that the catholyte possesses a long-term killing efficacy and continued to inhibit pathogen growth for 10 days.
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Affiliation(s)
- Iwona Gajda
- Bristol BioEnergy Centre, Bristol Robotics Laboratory, University of the West of England, Bristol, BS16 1QY, UK.
| | - Oluwatosin Obata
- Bristol BioEnergy Centre, Bristol Robotics Laboratory, University of the West of England, Bristol, BS16 1QY, UK
| | - John Greenman
- Bristol BioEnergy Centre, Bristol Robotics Laboratory, University of the West of England, Bristol, BS16 1QY, UK.,Biological, Biomedical and Analytical Sciences, University of the West of England, Bristol, BS16 1QY, UK
| | - Ioannis A Ieropoulos
- Bristol BioEnergy Centre, Bristol Robotics Laboratory, University of the West of England, Bristol, BS16 1QY, UK. .,Biological, Biomedical and Analytical Sciences, University of the West of England, Bristol, BS16 1QY, UK.
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79
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Sonu K, Syed Z, Sogani M. Up-scaling microbial fuel cell systems for the treatment of real textile dye wastewater and bioelectricity recovery. ACTA ACUST UNITED AC 2020. [DOI: 10.1080/00207233.2020.1736438] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Kumar Sonu
- Department of Civil Engineering, Manipal University Jaipur, Jaipur, India
| | - Zainab Syed
- Department of Civil Engineering, Manipal University Jaipur, Jaipur, India
- Department of Biosciences, Manipal University Jaipur, Jaipur, India
| | - Monika Sogani
- Department of Civil Engineering, Manipal University Jaipur, Jaipur, India
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80
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Jing X, Yang Y, Ai Z, Chen S, Zhou S. Potassium channel blocker inhibits the formation and electroactivity of Geobacter biofilm. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 705:135796. [PMID: 31806298 DOI: 10.1016/j.scitotenv.2019.135796] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 11/21/2019] [Accepted: 11/25/2019] [Indexed: 06/10/2023]
Abstract
Bacteria in biofilms are able to utilize potassium ion channel-mediated electrical signaling to achieve cell-cell communication. However, it remains unclear whether these signals play a role in Geobacter sp. when surrounded by an intense electric field. This study used a potassium channel blocker (tetraethylammonium, TEA) that interfered with the release of K+ but not bacterial growth to demonstrate that potassium ion channel-mediated electrical signaling affected the formation and electroactivity of Geobacter sulfurreducens. The results showed that 5 mM TEA slowed the formation of Geobacter sulfurreducens biofilm, and the current density was ~50% lower than in the control. The electrochemical analyses showed that the electroactivity of the biofilms with TEA addition was inferior. In particular, the micrometer- scale biofilm with TEA exhibited fewer high current peaks, and the species of outermost groups that participated in the electron transfer in Geobacter sulfurreducens biofilms was different from the control. This work provides initial evidence to reveal the role of potassium channels in Geobacter sulfurreducens electroactive biofilms.
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Affiliation(s)
- Xianyue Jing
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yuting Yang
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zhihao Ai
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shanshan Chen
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Shungui Zhou
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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81
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Hu L, Liao Y, Xia D, Zhang Q, He H, Yang J, Huang Y, Liu H, Zhang F, He C, Shu D. In-situ fabrication of AgI-BiOI nanoflake arrays film photoelectrode for efficient wastewater treatment, electricity production and enhanced recovery of copper in photocatalytic fuel cell. Catal Today 2020. [DOI: 10.1016/j.cattod.2018.12.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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82
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Cai J, Qaisar M, Sun Y. Effect of external resistance on substrate removal and electricity generation in microbial fuel cell treating sulfide and nitrate simultaneously. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:238-249. [PMID: 31784879 DOI: 10.1007/s11356-019-06960-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 11/04/2019] [Indexed: 06/10/2023]
Abstract
The effect of external resistance on substrate removal and electricity generation was explored in microbial fuel cells (MFCs) simultaneously treating sulfide and nitrate. The MFCs were operated under three different conditions keeping open-circuit MFC as control. In batch mode, all the MFCs showed good capacity of simultaneously removing sulfide and nitrate regardless of external resistance. The voltage profile could be divided into rapid descent zone, bulge zone, and stability zone, which represents typical polarization behavior. Taking open circuit as control, low external resistance promoted the production of sulfate and nitrogen gas, while a strong link between product production and external resistance was evident based on Pearson correlation analyses. In addition, low external resistance improved the amount of transferred electrons, while the peak electronic quantity was noticed when the external resistance was equivalent to internal resistance. Moreover, the mechanism of substrate removal and electricity generation was hypothesized for the MFCs simultaneously treating sulfide and nitrate which explained the results well.
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Affiliation(s)
- Jing Cai
- College of Environmental Science and Engineering, Zhejiang Gongshang University, No.18 Xuezheng Street, Zhejiang Province, Hangzhou, China.
| | - Mahmood Qaisar
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Pakistan
| | - Yue Sun
- College of Environmental Science and Engineering, Zhejiang Gongshang University, No.18 Xuezheng Street, Zhejiang Province, Hangzhou, China
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83
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Yang G, Wang J, Zhang H, Jia H, Zhang Y, Fang H, Gao F, Li J. Fluctuation of electrode potential based on molecular regulation induced diversity of electrogenesis behavior in multiple equilibrium microbial fuel cell. CHEMOSPHERE 2019; 237:124453. [PMID: 31394439 DOI: 10.1016/j.chemosphere.2019.124453] [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: 11/29/2018] [Revised: 06/17/2019] [Accepted: 07/24/2019] [Indexed: 06/10/2023]
Abstract
In this study, the electrogenesis behaviors and mechanisms in multiple equilibrium microbial fuel cells (MEMFCs) which volatile fatty acids as multiple electron donors are investigated. The electrochemical property and energy recovery can be enhanced in propionic acid dominant systems (HPr-D-MEMFCs) which compares to butyric acid dominant systems (HBu-D-MEMFCs), increase power density from 0.04 to 0.43 W/m2 and energy recovery efficiency from 2.07 to 5.44%, respectively. With isotope experiment analysis, the fluctuation of electrode potentials induce diverse electrogenesis pathways that high utilization efficiencies and bioconversion efficiency of hybrid acids observed in HPr-D-MEMFCs which different with HAc-D-MEMFCs and HBu-D-MEMFCs. In addition, the electrochemical and microbial community variation of MEMFCs reveal that the direct interspecies electron transfer stimulated with higher electric double layer capacitance, and activities of exoelectrogens enhanced with high relative abundance in HPr-D-MEMFCs. The findings present an intensive study in electrogenesis, providing a promising way to promote energy recovery and further extend its application value.
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Affiliation(s)
- Guang Yang
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China; State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China
| | - Jie Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China.
| | - Hongwei Zhang
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China; State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China.
| | - Hui Jia
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
| | - Yang Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China
| | - Hongyan Fang
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China; State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China
| | - Fei Gao
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China; State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China
| | - Juan Li
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
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84
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Liu F, Luo S, Wang H, Zuo K, Wang L, Zhang X, Liang P, Huang X. Improving wastewater treatment capacity by optimizing hydraulic retention time of dual-anode assembled microbial desalination cell system. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.05.071] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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85
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Turick CE, Shimpalee S, Satjaritanun P, Weidner J, Greenway S. Convenient non-invasive electrochemical techniques to monitor microbial processes: current state and perspectives. Appl Microbiol Biotechnol 2019; 103:8327-8338. [PMID: 31478059 PMCID: PMC6800409 DOI: 10.1007/s00253-019-10091-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 08/19/2019] [Indexed: 11/22/2022]
Abstract
Real-time electrochemical monitoring in bioprocesses is an improvement over existing systems because it is versatile and provides more information to the user than periodic measurements of cell density or metabolic activity. Real-time electrochemical monitoring provides the ability to monitor the physiological status of actively growing cells related to electron transfer activity and potential changes in the proton gradient of the cells. Voltammetric and amperometric techniques offer opportunities to monitor electron transfer reactions when electrogenic microbes are used in microbial fuel cells or bioelectrochemical synthesis. Impedance techniques provide the ability to monitor the physiological status of a wide range of microorganisms in conventional bioprocesses. Impedance techniques involve scanning a range of frequencies to define physiological activity in terms of equivalent electrical circuits, thereby enabling the use of computer modeling to evaluate specific growth parameters. Electrochemical monitoring of microbial activity has applications throughout the biotechnology industry for generating real-time data and offers the potential for automated process controls for specific bioprocesses.
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Affiliation(s)
- Charles E. Turick
- Savannah River National Laboratory, Environmental Science and Biotechnology, Aiken, SC USA
| | - Sirivatch Shimpalee
- Department of Chemical Engineering and Computing, University of South Carolina, 541 Main Street, Columbia, SC USA
| | - Pongsarun Satjaritanun
- Department of Chemical Engineering and Computing, University of South Carolina, 541 Main Street, Columbia, SC USA
| | - John Weidner
- Department of Chemical Engineering and Computing, University of South Carolina, 541 Main Street, Columbia, SC USA
| | - Scott Greenway
- Savannah River Consulting, 301 Gateway Drive, Aiken, SC USA
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86
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Arboleda Avilés DG, Núñez Barrionuevo OF, Sánchez Olmedo OF, Chinchin Piñan BD, Arboleda Briones DA, Bahamonde Soria RA. Application of a direct current circuit to pick up and to store bioelectricity produced by microbial fuel cells. REVISTA COLOMBIANA DE QUÍMICA 2019. [DOI: 10.15446/rev.colomb.quim.v48n3.77011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Every year the demand for energy worldwide is increasing. There are some alternatives to reduce these problems, such as clean energy or renewable energy. A particular alternative is the microbial fuel cells. These cells are biochemical reactors that convert chemical energy into electricity. The present research evaluated the dairy serum to produce bioelectricity from micro fuel cells (MFC) that were constructed with low-cost materials and with isolated bacteria in anaerobic sediments, located in Ecuadorian national territory, producing maximum voltages of 0.830 V in the circuit and a maximum power density of 30mW / m2. This low voltage was worked with 50 mL MFCs and with an output voltage of 300 mV. Under these conditions, a FLYBACK lift circuit isolated by the transformer was designed. This new circuit could increase the voltage from 30 mV to enough voltage to light a 2.5 V LED. Therefore, the energy produced by the MFC can be directly used to light a LED and to charge capacitors. This study shows that these MFCs, together with the designed circuit, could be used potentially to generate clean energy.
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87
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88
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Guo F, Shi Z, Yang K, Wu Y, Liu H. Enhancing the power performance of sediment microbial fuel cells by novel strategies: Overlying water flow and hydraulic-driven cathode rotating. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 678:533-542. [PMID: 31078843 DOI: 10.1016/j.scitotenv.2019.04.439] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 04/28/2019] [Accepted: 04/30/2019] [Indexed: 06/09/2023]
Abstract
Sediment microbial fuel cells (SMFCs) are promising power sources for environmental monitoring in remote areas and environment-friendly solutions to river sediment contamination. However, cathodic limitations will significantly decrease power performance and limit its practical application. In this work, the control SMFC (SMFC-C) with cathode horizontally and fully submerged below the overlying water, and the hydraulic-driven rotating cathode SMFC (SMFC-R) was constructed. Overlying water flow and hydraulic-driven cathode rotating as novel strategies for SMFCs towards field applications were proposed. Results demonstrated that better power performance under static condition was obtained in SMFC-R than in SMFC-C, that the overlying water flow could significantly increase the maximum power density (MPD) in SMFC-C over the static condition, and that the cathode rotating further improved MPD in SMFC-R. The MPD obtained under static condition were 26.5 mW/m2 and 45.1 mW/m2 in SMFC-C and SMFC-R, which increased to 38.8 mW/m2 and 47.3 mW/m2 under water flow and cathode rotating condition, respectively. Analyses on cathode potential, overlying water pH and dissolved oxygen suggested severe cathodic limitations in SMFC-C under static condition which could be diminished by overlying water flow. However, almost no such limitations were observed in SMFC-R even under static condition, which is probably due to the fact that the cathodic oxygen reaction in SMFC-R mainly occurred on the cathode exposed to the air rather than on that submerged below the water. Identical anode performance was obtained in both SMFCs under different conditions, which were not an influencing factor leading to different power performance.
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Affiliation(s)
- Fei Guo
- School of Civil Engineering, Architecture and Environment, Xihua University, Chengdu 610039, China; Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Zongyang Shi
- School of Civil Engineering, Architecture and Environment, Xihua University, Chengdu 610039, China
| | - Kaiming Yang
- School of Civil Engineering, Architecture and Environment, Xihua University, Chengdu 610039, China
| | - Yan Wu
- School of Civil Engineering, Architecture and Environment, Xihua University, Chengdu 610039, China
| | - Hong Liu
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China.
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89
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Chen J, Lv Y, Wang Y, Ren Y, Li X, Wang X. Endogenous inorganic carbon buffers accumulation and self-buffering capacity enhancement of air-cathode microbial fuel cells through anolyte recycling. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 676:11-17. [PMID: 31029896 DOI: 10.1016/j.scitotenv.2019.04.282] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 03/31/2019] [Accepted: 04/18/2019] [Indexed: 06/09/2023]
Abstract
Anolyte acidification is inevitable in the operation of buffer-free microbial fuel cells (MFCs), which restricts the proliferation and metabolism of electroactive bacteria, and results in electric-power deterioration. The anodic metabolic end-products, inorganic carbons (IC), which are composed of H2CO3 (dissolved CO2), HCO3-, and CO32-, are ideal endogenous buffers, whereas the naturally accumulated IC are far from enough to prevent anolyte acidification. In this work, different volume ratios of the anolytes (10%, 30%, and 50%) were recycled to increase the IC concentrations of the single-chamber air-cathode buffer-free MFCs. Under anolyte recycling running mode, IC accumulation agreed with the SGompertz model and the fitting IC-asymptotic concentrations (ICAC) grew exponentially to 18.5 mM, 24.4 mM, and 32.8 mM as the anolyte recycling ratio increased from 10% to 30% and 50%. Self-buffering running can be realized when the anolyte recycling ratio exceeds 50% for the MFC feeding on 1 g·L-1 of acetate. The electric power for the 50% recycling scenario increased from the baseline control of 272.4 mW·m-2 to 628.5 mW·m-2. The coulombic efficiency (CE) was also apparently improved. This paper for the first time clarifies the accumulation law of endogenous IC buffers under anolyte partially recycling mode and their self-buffering effects.
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Affiliation(s)
- Jinli Chen
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Ying Lv
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yue Wang
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yueping Ren
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China.
| | - Xiufen Li
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China.
| | - Xinhua Wang
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
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90
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Noori MT, Ghangrekar MM, Mukherjee CK, Min B. Biofouling effects on the performance of microbial fuel cells and recent advances in biotechnological and chemical strategies for mitigation. Biotechnol Adv 2019; 37:107420. [PMID: 31344446 DOI: 10.1016/j.biotechadv.2019.107420] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 07/01/2019] [Accepted: 07/19/2019] [Indexed: 02/08/2023]
Abstract
The occurrence of biofouling in MFC can cause severe problems such as hindering proton transfer and increasing the ohmic and charge transfer resistance of cathodes, which results in a rapid decline in performance of MFC. This is one of the main reasons why scaling-up of MFCs has not yet been successfully accomplished. The present review article is a wide-ranging attempt to provide insights to the biofouling mechanisms on surfaces of MFC, mainly on proton exchange membranes and cathodes, and their effects on performance of MFC based on theoretical and practical evidence. Various biofouling mitigation techniques for membranes are discussed, including preparation of antifouling composite membranes, modification of the physical and chemical properties of existing membranes, and coating with antifouling agents. For cathodes of MFC, use of Ag nanoparticles, Ag-based composite nanoparticles, and antifouling chemicals is outlined in considerable detail. Finally, prospective techniques for mitigation of biofouling are discussed, which have not been given much previous attention in the field of MFC research. This article will help to enhance understanding of the severity of biofouling issues in MFCs and provides up-to-date solutions. It will be beneficial for scientific communities for further strengthening MFC research and will also help in progressing this cutting-edge technology to scale-up, using the most efficient methods as described here.
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Affiliation(s)
- Md T Noori
- Department of Environmental Science and Engineering, Kyung Hee University, Yongin-Si, Republic of Korea
| | - M M Ghangrekar
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, 721302, India
| | - C K Mukherjee
- Department of Agricultural and Food Engineering, Indian Institute of Technology Kharagpur, 721302, India
| | - Booki Min
- Department of Environmental Science and Engineering, Kyung Hee University, Yongin-Si, Republic of Korea.
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91
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Ahilan V, de Barros CC, Bhowmick GD, Ghangrekar MM, Murshed MM, Wilhelm M, Rezwan K. Microbial fuel cell performance of graphitic carbon functionalized porous polysiloxane based ceramic membranes. Bioelectrochemistry 2019; 129:259-269. [PMID: 31247532 DOI: 10.1016/j.bioelechem.2019.06.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 06/04/2019] [Accepted: 06/04/2019] [Indexed: 02/06/2023]
Abstract
Proton-conducting porous ceramic membranes were synthesized via a polymer-derived ceramic route and probed in a microbial fuel cell (MFC). Their chemical compositions were altered by adding carbon allotropes including graphene oxide (GO) and multiwall carbon nanotubes into a polysiloxane matrix as filler materials. Physical characteristics of the synthesized membranes such as porosity, hydrophilicity, mechanical stability, ion exchange capacity, and oxygen mass transfer coefficient were determined to investigate the best membrane material for further testing in MFCs. The ion exchange capacity of the membrane increased drastically after adding 0.5 wt% of GO at an increment of 9 fold with respect to that of the non-modified ceramic membrane, while the oxygen mass transfer coefficient of the membrane decreased by 52.6%. The MFC operated with this membrane exhibited a maximum power density of 7.23 W m-3 with a coulombic efficiency of 28.8%, which was significantly higher than the value obtained using polymeric Nafion membrane. Hence, out of all membranes tested in this study the GO-modified polysiloxane based ceramic membranes are found to have a potential to replace Nafion membranes in pilot scale MFCs.
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Affiliation(s)
- Vignesh Ahilan
- University of Bremen, Advanced Ceramics, Am Biologischen Garten 2, IW3, 28359 Bremen, Germany
| | - Camila Cabral de Barros
- University of Bremen, Advanced Ceramics, Am Biologischen Garten 2, IW3, 28359 Bremen, Germany; Department of Materials Engineering, Federal University of Santa Catarina (UFSC), 88040-900 Florianopolis, SC, Brazil
| | - Gourav Dhar Bhowmick
- Department of Agricultural and Food Engineering, Indian Institute of Technology, Kharagpur, 721302, India
| | - Makarand M Ghangrekar
- Department of Civil Engineering, Indian Institute of Technology, Kharagpur, 721302, India
| | - M Mangir Murshed
- University of Bremen, Institute of Inorganic Chemistry and Crystallography, Leobener Straße 7, D-28359 Bremen, Germany; MAPEX Center for Materials and Processes, University of Bremen, 28359 Bremen, Germany
| | - Michaela Wilhelm
- University of Bremen, Advanced Ceramics, Am Biologischen Garten 2, IW3, 28359 Bremen, Germany.
| | - Kurosch Rezwan
- University of Bremen, Advanced Ceramics, Am Biologischen Garten 2, IW3, 28359 Bremen, Germany; MAPEX Center for Materials and Processes, University of Bremen, 28359 Bremen, Germany
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92
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Mohanakrishna G, Al-Raoush RI, Abu-Reesh IM, Aljaml K. Removal of petroleum hydrocarbons and sulfates from produced water using different bioelectrochemical reactor configurations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 665:820-827. [PMID: 30790754 DOI: 10.1016/j.scitotenv.2019.02.181] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 02/11/2019] [Accepted: 02/12/2019] [Indexed: 06/09/2023]
Abstract
Produced water (PW) is a wastewater generated in large quantities from the extraction of oil and gas. PW found to have high amounts of dissolved solids (TDS) and residual petroleum hydrocarbons causing considerable damage to the environment. PW also contains sulfates in significant amounts, due to which treating this wastewater is essential prior to discharge. The present study was aimed for bioelectrochemical treatment of PW and simultaneous bioelectrogenesis in the two most studied configurations viz., single and dual chamber microbial fuel cells (MFCs). The study evidenced treatment of recalcitrant pollutants of PW. Both MFCs were operated by keeping similar operating conditions such as anode chamber volume, hydraulic retention time (HRT) for batch mode of operation, electrode materials, inlet characteristics of PW and ambient temperature. Among both configurations, dual chamber MFC showed higher efficiency with respect to bioelectrogenesis (single chamber - 789 mW/m2; dual chamber - 1089 mW/m2), sulfates removal (single chamber - 79.6%; dual chamber - 93.9%), total petroleum hydrocarbons removal (TPH, single chamber - 47.6%; dual chamber - 53.1%) and chemical oxygen demand degradation (COD, single chamber - 0.30 kg COD/m3-day (COD removal efficiency, 54.7%); dual chamber - 0.33 kg COD/m3-day (COD removal efficiency, 60.2%)). Evaluated polarization behavior of both MFCs were also evidenced the effective response of the electroactive anodic biofilm.
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Affiliation(s)
- Gunda Mohanakrishna
- Department of Civil and Architectural Engineering, College of Engineering, Qatar University, P O Box 2713, Doha, Qatar
| | - Riyadh I Al-Raoush
- Department of Civil and Architectural Engineering, College of Engineering, Qatar University, P O Box 2713, Doha, Qatar.
| | - Ibrahim M Abu-Reesh
- Department of Chemical Engineering, College of Engineering, Qatar University, P O Box 2713, Doha, Qatar
| | - Khaled Aljaml
- Department of Chemical Engineering, College of Engineering, Qatar University, P O Box 2713, Doha, Qatar
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93
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Lu S, Xie B, Liu B, Lu B, Xing D. Neglected Effects of Inoculum Preservation on the Start-Up of Psychrophilic Bioelectrochemical Systems and Shaping Bacterial Communities at Low Temperature. Front Microbiol 2019; 10:935. [PMID: 31118927 PMCID: PMC6507619 DOI: 10.3389/fmicb.2019.00935] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 04/12/2019] [Indexed: 01/29/2023] Open
Abstract
Bioelectrochemical systems (BESs) are capable of simultaneous wastewater treatment and resource recovery at low temperatures. However, the direct enrichment of psychrophilic and electroactive biofilms in BESs at 4°C is difficult due to the lack of understanding in the physioecology of psychrophilic exoelectrogens. Here, we report the start-up and operation of microbial fuel cells (MFCs) at 4°C with pre-acclimated inocula at different temperatures (4°C, 10°C, 25°C, and -20°C) for 7 days and 14 days. MFCs with 7-day-pretreated inocula reached higher peak voltages than did those with 14-day-pretreated inocula. The highest power densities were obtained by MFCs with 25°C - 7-day-, 25°C - 14-day-, and 4°C - 7-day-pretreated inocula (650-700 mW/m2). In contrast, the control MFCs with untreated inocula were stable at 450 mW/m2. The power densities of MFCs with 7-day-pretreated inocula were higher than those obtained by MFCs with 14-day-pretreated inocula. The MFCs with 10°C - 7-day-pretreated inocula and the control MFCs showed higher chemical oxygen demand (COD) removal (90-91%) than other MFCs. Illumina HiSeq sequencing based on 16S rRNA gene amplicons indicated that bacterial communities of the anode biofilms were shaped by pretreated inocula at different temperatures. Compared with the control MFCs with untreated inocula, MFCs with temperature-pretreated inocula demonstrated higher microbial diversity, but did not do so with -20°C-pretreated inocula. Principal components analysis (PCA) revealed an obvious separation between the inocula pretreated at 4°C and those pretreated at 10°C, implying that bacterial community structures could be shaped by pretreated inocula at low temperatures. The pretreatment period also had a diverse impact on the abundance of exoelectrogens and non-exoelectrogens in MFCs with inocula pretreated at different temperatures. The majority of the predominant population was affiliated with Geobacter with a relative abundance of 17-70% at different pre-acclimated temperatures, suggesting that the exoelectrogenic Geobacter could be effectively enriched at 4°C even with inocula pretreated at different temperatures. This study provides a strategy that was previously neglected for fast enrichment of psychrophilic exoelectrogens in BESs at low temperatures.
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Affiliation(s)
- Sidan Lu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, China
- Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA, United States
| | - Binghan Xie
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, China
| | - Bingfeng Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, China
| | - Baiyun Lu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, China
| | - Defeng Xing
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, China
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94
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Sun J, Xu W, Cai B, Huang G, Zhang H, Zhang Y, Yuan Y, Chang K, Chen K, Peng Y, Chen K. High-concentration nitrogen removal coupling with bioelectric power generation by a self-sustaining algal-bacterial biocathode photo-bioelectrochemical system under daily light/dark cycle. CHEMOSPHERE 2019; 222:797-809. [PMID: 30739064 DOI: 10.1016/j.chemosphere.2019.01.191] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 01/25/2019] [Accepted: 01/31/2019] [Indexed: 06/09/2023]
Abstract
High-concentration nitrogen removal coupled with bioelectric power generation in an algal-bacterial biocathode photo-bioelectrochemical system (PBES) was investigated. The PBES can self-sustaining operation with continuous power output under day/night cycle by alternately using photosynthetic dissolved oxygen and nitrate/nitrite as cathodic electron acceptors. The PBES generated a high maximum power of 110mw/m2 under illumination and relatively lower power of 40mw/m2 under dark. The bioelectricity generation was accompanied by high-concentration nitrogen removal in the algal-bacterial biocathode. The NH4N was removed completely within 120 h while maximum NO3N removal efficiency of 86% and maximum total nitrogen removal efficiency of 83% can be reached after 192 h at initial NH4N concentration of 314 mg/L and NO3N concentration of 330 mg/L. Combined processes of bioelectrochemical reduction and algal-bacterial interactions provided multiple approaches for nitrogen removal in the biocathode, including nitrifying using photosynthetic oxygen, bioelectrochemical denitrification using the cathode as electron donor, heterotrophic denitrification using photosynthetically produced dissolved organic matters as carbon source and algal-bacterial uptake. Accelerated nitrogen removal with simultaneously improved cathode performance was observed at high concentration of nitrogen and phosphate buffer due to enhanced algal activities for photosynthetic oxygen release and enhanced algal-bacterial interactions for nitrogen transformation. Addition of external organic carbon negatively affected nitrification and decreased cathode potential due to oxygen consumption by aerobic carbon oxidation but enhanced denitrification due to continuous release of high concentration of photosynthetically produced dissolved organic matters by alga. The PBEC was demonstrated as an energy-saving approach for high-strengthen nitrogenous wastewater treatment.
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Affiliation(s)
- Jian Sun
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Wenjing Xu
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Bihai Cai
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Guofu Huang
- School of Chemical and Environmental Engineering, Shandong Peninsula, Engineering Research Center of Comprehensive Brine Utilization, Weifang University of Science & Technology, Shouguang, 262700, China
| | - Hongguo Zhang
- Guangzhou University-Linköping University Research Center on Urban Sustainable, Development, Guangzhou University, 510006, Guangzhou, China
| | - Yaping Zhang
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yong Yuan
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Kenlin Chang
- Institute of Environmental Engineering, National Sun Yat-sen University, Gaoxiong, 80424, Taiwan
| | - Kangxing Chen
- Institute of Environmental Engineering, National Sun Yat-sen University, Gaoxiong, 80424, Taiwan
| | - Yenping Peng
- Department of Environmental Science and Engineering, Tunghai University, Taichung, 40704, Taiwan
| | - Kufan Chen
- Department of Civil Engineering, National Chi Nan University, Nanto, 54561, Taiwan
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95
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Almomani F, Al Ketife A, Judd S, Shurair M, Bhosale RR, Znad H, Tawalbeh M. Impact of CO 2 concentration and ambient conditions on microalgal growth and nutrient removal from wastewater by a photobioreactor. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 662:662-671. [PMID: 30703724 DOI: 10.1016/j.scitotenv.2019.01.144] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/10/2019] [Accepted: 01/13/2019] [Indexed: 06/09/2023]
Abstract
The increase in atmospheric CO2 concentration and the release of nutrients from wastewater treatment plants (WWTPs) are environmental issues linked to several impacts on ecosystems. Numerous technologies have been employed to resolves these issues, nonetheless, the cost and sustainability are still a concern. Recently, the use of microalgae appears as a cost-effective and sustainable solution because they can effectively uptake CO2 and nutrients resulting in biomass production that can be processed into valuable products. In this study single (Spirulina platensis (SP.PL) and mixed indigenous microalgae (MIMA) strains were employed, over a 20-month period, for simultaneous removal of CO2 from flue gases and nutrient from wastewater under ambient conditions of solar irradiation and temperature. The study was performed at a pilot scale photo-bioreactor and the effect of feed CO2 gas concentration in the range (2.5-20%) on microalgae growth and biomass production, carbon dioxide bio-fixation rate, and the removal of nutrients and organic matters from wastewater was assessed. The MIMA culture performed significantly better than the monoculture, especially with respect to growth and CO2 bio-fixation, during the mild season; against this, the performance was comparable during the hot season. Optimum performance was observed at 10% CO2 feed gas concentration, though MIMA was more temperature and CO2 concentration sensitive. MIMA also provided greater removal of COD and nutrients (~83% and >99%) than SP.PL under all conditions studied. The high biomass productivities and carbon bio-fixation rates (0.796-0.950 gdw·L-1·d-1 and 0.542-1.075 gC·L-1·d-1 contribute to the economic sustainability of microalgae as CO2 removal process. Consideration of operational energy revealed that there is a significant energy benefit from cooling to sustain the highest productivities on the basis of operating energy alone, particularly if the indigenous culture is used.
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Affiliation(s)
- Fares Almomani
- Department of Chemical Engineering, Qatar University, P.O Box 2713, Doha, Qatar.
| | - Ahmed Al Ketife
- Gas Processing Center, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Simon Judd
- Gas Processing Center, Qatar University, P.O. Box 2713, Doha, Qatar; Cranfield Water Science Institute, Cranfield University, United Kingdom of Great Britain
| | - Mohamed Shurair
- Department of Chemical Engineering, Qatar University, P.O Box 2713, Doha, Qatar
| | - Rahul R Bhosale
- Department of Chemical Engineering, Qatar University, P.O Box 2713, Doha, Qatar
| | - Hussein Znad
- Department of Chemical Engineering, Curtin University, GPO Box U 1987, Perth, WA 6845, Australia
| | - Muhammad Tawalbeh
- Sustainable & Renewable Energy Engineering Department, College of Engineering, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates
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96
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Scale up of Microbial Fuel Cell Stack System for Residential Wastewater Treatment in Continuous Mode Operation. WATER 2019. [DOI: 10.3390/w11020217] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The most important operational expense during wastewater treatment is electricity for pumping and aeration. Therefore, this work evaluated operational parameters and contaminant removal efficiency of a microbial fuel cell stack system (MFCSS) that uses no electricity. This system consists of (i) septic tank primary treatment, (ii) chamber for secondary treatment containing 18 MFCs, coupled to an energy-harvesting circuit (EHC) that stores the electrons produced by anaerobic respiration, and (iii) gravity-driven disinfection (sodium hypochlorite 5%). The MFCSS operated during 60 days (after stabilization period) and it was gravity-fed with real domestic wastewater from a house (5 inhabitants). The flow rate was 600 ± 100 L∙d−1. The chemical oxygen demand, biological oxygen demand, total nitrogen and total phosphorous were measured in effluent, with values of 100 ± 10; 12 ± 2; 9.6 ± 0.5 and 4 ± 0.2 mg∙L−1, and removal values of 86%, 87%, 84% and 64%, respectively. Likewise, an EHC (ultra-low energy consumption) was built with 6.3 V UCC® 4700 µF capacitors that harvested and stored energy from MFCs in parallel. Energy management was programmed on a microcontroller Atmega 328PB®. The water quality of the treated effluent complied with the maximum levels set by the Mexican Official Standard NOM-001-SEMARNAT-1996-C. A cost analysis showed that MFCSS could be competitive as a sustainable and energy-efficient technology for real domestic wastewater treatment.
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97
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Zou L, Wu X, Huang Y, Ni H, Long ZE. Promoting Shewanella Bidirectional Extracellular Electron Transfer for Bioelectrocatalysis by Electropolymerized Riboflavin Interface on Carbon Electrode. Front Microbiol 2019; 9:3293. [PMID: 30697199 PMCID: PMC6340934 DOI: 10.3389/fmicb.2018.03293] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 12/18/2018] [Indexed: 11/13/2022] Open
Abstract
The extracellular electron transfer (EET) that connects the intracellular metabolism of electroactive microorganisms to external electron donors/acceptors, is the foundation to develop diverse microbial electrochemical technologies. For a particular microbial electrochemical device, the surface chemical property of an employed electrode material plays a crucial role in the EET process owing to the direct and intimate biotic-abiotic interaction. The functional modification of an electrode surface with redox mediators has been proposed as an effectual approach to promote EET, but the underlying mechanism remains unclear. In this work, we investigated the enhancement of electrochemically polymerized riboflavin interface on the bidirectional EET of Shewanella putrefaciens CN32 for boosting bioelectrocatalytic ability. An optimal polyriboflavin functionalized carbon cloth electrode achieved about 4.3-fold output power density (∼707 mW/m2) in microbial fuel cells and 3.7-fold cathodic current density (∼0.78 A/m2) for fumarate reduction in three-electrode cells compared to the control, showing great increases in both outward and inward EET rates. Likewise, the improvement was observed for polyriboflavin-functionalized graphene electrodes. Through comparison between wild-type strain and outer-membrane cytochrome (MtrC/UndA) mutant, the significant improvements were suggested to be attributed to the fast interfacial electron exchange between the polyriboflavin interface with flexible electrochemical activity and good biocompatibility and the outer-membrane cytochromes of the Shewanella strain. This work not only provides an effective approach to boost microbial electrocatalysis for energy conversion, but also offers a new demonstration of broadening the applications of riboflavin-functionalized interface since the widespread contribution of riboflavin in various microbial EET pathways together with the facile electropolymerization approach.
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Affiliation(s)
| | | | | | | | - Zhong-er Long
- College of Life Science, Jiangxi Normal University, Nanchang, China
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98
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Gajda I, Stinchcombe A, Merino-Jimenez I, Pasternak G, Sanchez-Herranz D, Greenman J, Ieropoulos IA. Miniaturized Ceramic-Based Microbial Fuel Cell for Efficient Power Generation From Urine and Stack Development. FRONTIERS IN ENERGY RESEARCH 2018; 6:84. [PMID: 33409273 PMCID: PMC7705131 DOI: 10.3389/fenrg.2018.00084] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 08/06/2018] [Indexed: 05/05/2023]
Abstract
One of the challenges in Microbial Fuel Cell (MFC) technology is the improvement of the power output and the lowering of the cost required to scale up the system to reach usable energy levels for real life applications. This can be achieved by stacking multiple MFC units in modules and using cost effective ceramic as a membrane/chassis for the reactor architecture. The main aim of this work is to increase the power output efficiency of the ceramic based MFCs by compacting the design and exploring the ceramic support as the building block for small scale modular multi-unit systems. The comparison of the power output showed that the small reactors outperform the large MFCs by improving the power density reaching up to 20.4 W/m3 (mean value) and 25.7 W/m3 (maximum). This can be related to the increased surface-area-to-volume ratio of the ceramic membrane and a decreased electrode distance. The power performance was also influenced by the type and thickness of the ceramic separator as well as the total surface area of the anode electrode. The study showed that the larger anode electrode area gives an increased power output. The miniaturized design implemented in 560-units MFC stack showed an output up to 245 mW of power and increased power density. Such strategy would allow to utilize the energy locked in urine more efficiently, making MFCs more applicable in industrial and municipal wastewater treatment facilities, and scale-up-ready for real world implementation.
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Affiliation(s)
- Iwona Gajda
- Bristol Robotics Laboratory, Bristol BioEnergy Centre, University of the West of England, Bristol, United Kingdom
- Correspondence: Iwona Gajda Ioannis A. Ieropoulos
| | - Andrew Stinchcombe
- Bristol Robotics Laboratory, Bristol BioEnergy Centre, University of the West of England, Bristol, United Kingdom
| | - Irene Merino-Jimenez
- Bristol Robotics Laboratory, Bristol BioEnergy Centre, University of the West of England, Bristol, United Kingdom
| | - Grzegorz Pasternak
- Bristol Robotics Laboratory, Bristol BioEnergy Centre, University of the West of England, Bristol, United Kingdom
| | - Daniel Sanchez-Herranz
- Bristol Robotics Laboratory, Bristol BioEnergy Centre, University of the West of England, Bristol, United Kingdom
| | - John Greenman
- Bristol Robotics Laboratory, Bristol BioEnergy Centre, University of the West of England, Bristol, United Kingdom
- Department of Applied Sciences, University of the West of England, Bristol, United Kingdom
| | - Ioannis A. Ieropoulos
- Bristol Robotics Laboratory, Bristol BioEnergy Centre, University of the West of England, Bristol, United Kingdom
- Department of Applied Sciences, University of the West of England, Bristol, United Kingdom
- Correspondence: Iwona Gajda Ioannis A. Ieropoulos
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