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Jin J, Wang L, Sun W, Yang Z, Chen X, Wang H, Liu G. Membrane-less Paired Electrolysis for Cooperative Conversion of Complex NO in a Complexing Absorption System. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Jingjing Jin
- Department of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, Dalian116024, China
| | - Lida Wang
- Department of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, Dalian116024, China
- Dalian Key Laboratory of Flue Gas Purification and Waste Heat Utilization, Dalian116024, China
| | - Wen Sun
- Department of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, Dalian116024, China
- Dalian Key Laboratory of Flue Gas Purification and Waste Heat Utilization, Dalian116024, China
| | - Zhengqing Yang
- Department of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, Dalian116024, China
| | - Xu Chen
- Department of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, Dalian116024, China
| | - Haiyan Wang
- Department of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, Dalian116024, China
| | - Guichang Liu
- Department of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, Dalian116024, China
- Dalian Key Laboratory of Flue Gas Purification and Waste Heat Utilization, Dalian116024, China
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Ding F, Liu H, Jiang X, Jiang Y, Tu Y, Xiao W, Yan X, Li C. Co9S8 nanoparticles encapsulated in N,S co-doped hierarchical carbon as an efficient oxygen reduction electrocatalyst for microbial fuel cells. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Ndlwana L, Raleie N, Dimpe KM, Ogutu HF, Oseghe EO, Motsa MM, Msagati TA, Mamba BB. Sustainable Hydrothermal and Solvothermal Synthesis of Advanced Carbon Materials in Multidimensional Applications: A Review. MATERIALS (BASEL, SWITZERLAND) 2021; 14:5094. [PMID: 34501183 PMCID: PMC8434334 DOI: 10.3390/ma14175094] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/27/2021] [Accepted: 07/07/2021] [Indexed: 12/28/2022]
Abstract
The adoption of green technology is very important to protect the environment and thus there is a need for improving the existing methods for the fabrication of carbon materials. As such, this work proposes to discuss, interrogate, and propose viable hydrothermal, solvothermal, and other advanced carbon materials synthesis methods. The synthesis approaches for advanced carbon materials to be interrogated will include the synthesis of carbon dots, carbon nanotubes, nitrogen/titania-doped carbons, graphene quantum dots, and their nanocomposites with solid/polymeric/metal oxide supports. This will be performed with a particular focus on microwave-assisted solvothermal and hydrothermal synthesis due to their favourable properties such as rapidity, low cost, and being green/environmentally friendly. These methods are regarded as important for the current and future synthesis and modification of advanced carbon materials for application in energy, gas separation, sensing, and water treatment. Simultaneously, the work will take cognisance of methods reducing the fabrication costs and environmental impact while enhancing the properties as a direct result of the synthesis methods. As a direct result, the expectation is to impart a significant contribution to the scientific body of work regarding the improvement of the said fabrication methods.
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Affiliation(s)
- Lwazi Ndlwana
- Florida Science Campus Florida, Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Johannesburg 1709, South Africa; (N.R.); (H.F.O.); (E.O.O.); (M.M.M.); (T.A.M.M.); (B.B.M.)
| | - Naledi Raleie
- Florida Science Campus Florida, Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Johannesburg 1709, South Africa; (N.R.); (H.F.O.); (E.O.O.); (M.M.M.); (T.A.M.M.); (B.B.M.)
| | - Kgogobi M. Dimpe
- Doornfontein Campus, Department of Applied Chemistry, University of Johannesburg, P.O. Box 17011, Johannesburg 2028, South Africa;
| | - Hezron F. Ogutu
- Florida Science Campus Florida, Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Johannesburg 1709, South Africa; (N.R.); (H.F.O.); (E.O.O.); (M.M.M.); (T.A.M.M.); (B.B.M.)
| | - Ekemena O. Oseghe
- Florida Science Campus Florida, Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Johannesburg 1709, South Africa; (N.R.); (H.F.O.); (E.O.O.); (M.M.M.); (T.A.M.M.); (B.B.M.)
| | - Mxolisi M. Motsa
- Florida Science Campus Florida, Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Johannesburg 1709, South Africa; (N.R.); (H.F.O.); (E.O.O.); (M.M.M.); (T.A.M.M.); (B.B.M.)
| | - Titus A.M. Msagati
- Florida Science Campus Florida, Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Johannesburg 1709, South Africa; (N.R.); (H.F.O.); (E.O.O.); (M.M.M.); (T.A.M.M.); (B.B.M.)
| | - Bhekie B. Mamba
- Florida Science Campus Florida, Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Johannesburg 1709, South Africa; (N.R.); (H.F.O.); (E.O.O.); (M.M.M.); (T.A.M.M.); (B.B.M.)
- School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China
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Effect of substrate ratios on the simultaneous carbon, nitrogen, sulfur and phosphorous conversions in microbial fuel cells. Heliyon 2021; 7:e07338. [PMID: 34195439 PMCID: PMC8233142 DOI: 10.1016/j.heliyon.2021.e07338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/30/2021] [Accepted: 06/14/2021] [Indexed: 11/22/2022] Open
Abstract
The columbic efficiency, removal efficiency and voltage production of seven different combinations of carbon (acetic acid, albumin and sucrose) with nutrients (C:N, C:P, C:S, C:N:S, C:P:S, C:N:P and C: N:S:P) were investigated at three different ratios (20:1, 15:1 and 10:1). The effects of various pH values were also explored for these combinations of carbon, and sulfur compounds (pH 6-8). The highest columbic efficiency (75.8%), COD removal efficiency (86%) and voltage (667 mV) were recorded when the acetic acid was used in the MFC and the lowest columbic efficiency (12.8%), removal efficiency (37.6%) and voltage (145 mV) were observed in case of albumin. A marked increase in columbic efficiency, removal efficiency and voltage production were seen with the rise in the pH value from 6 to 8. The lowest columbic efficiency, removal efficiency and voltage production were seen at pH 6 and highest at pH 8. At each investigated pH, the highest removal efficiency, columbic efficiency, and voltage were found at substrate ratio of 20:1 while lower at 10:1. At all pH values, the carbon to nutrient ratios seemed to have followed a similar trend i.e., the COD removal efficiency, columbic efficiency and voltage generation was found in the order C:N > C:N:S > C:N:S:P > C:N:P > C:S > C:P:S > C:P. In all cases, nitrogen showed a higher removal as compared to phosphorous and sulfur.
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Shi X, Zhao F, Cao C, Zhang H, Dang X, Huang T. Nitrogen oxide gas purification using carbon in water as reducing reagent with the aid of microbial fuel cell. JOURNAL OF HAZARDOUS MATERIALS 2021; 405:124169. [PMID: 33127189 DOI: 10.1016/j.jhazmat.2020.124169] [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: 06/15/2020] [Revised: 09/29/2020] [Accepted: 09/30/2020] [Indexed: 06/11/2023]
Abstract
Microbial Fuel Cell (MFC) can degrade the organic matter (OM) in wastewater at the anode and transfer electrons to the cathode. In this work, the harmful NOX gas was used as electron acceptor in MFC and converted to harmless N2. The OM in water was indirectly used as a zero-cost reducing agent for NOx removal. More than 80% of NOX was removed continuously by MFC at room temperature. The NOX was directly reduced to N2 at MFC cathode and the cathode activity played a key role on enhancing the NOX removal. The NOX removal efficiency by the cathode of high potential was 1.37 times that by the cathode of low potential. When O2 coexisting with NO as the electron acceptor, not only the NOX removal but also the power output of MFC was improved greatly. The presence of NOX did not decrease the power generation of MFC under the same O2 concentration. The MFCs showed good stability for NOX treatment and power output. Moreover, the possible pathways and advantages of NOX removal by MFC were discussed in detail. These results indicated that the MFC system has the potential to treat wastewater, purify flue gas and recover energy simultaneously.
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Affiliation(s)
- Xinxin Shi
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China.
| | - Fan Zhao
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Chi Cao
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Haihan Zhang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Xiaoqing Dang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Tinglin Huang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China
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Lu S, Lu B, Tan G, Moe W, Xu W, Wang Y, Xing D, Zhu X. Mo 2N nanobelt cathodes for efficient hydrogen production in microbial electrolysis cells with shaped biofilm microbiome. Biosens Bioelectron 2020; 167:112491. [PMID: 32798808 DOI: 10.1016/j.bios.2020.112491] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/29/2020] [Accepted: 07/31/2020] [Indexed: 10/23/2022]
Abstract
High cost platinum (Pt) catalysts limit the application of microbial electrolysis cells (MECs) for hydrogen (H2) production. Here, inexpensive and efficient Mo2N nanobelt cathodes were prepared using an ethanol method with minimized catalyst and binder loadings. The chronopotentiometry tests demonstrated that the Mo2N nanobelt cathodes had similar catalytic activities for H2 evolution compared to that of Pt/C (10 wt%). The H2 production rates (0.39 vs. 0.37 m3-H2/m3/d), coulombic efficiencies (90% vs. 77%), and overall hydrogen recovery (74% vs. 70%) of MECs with the Mo2N nanobelt cathodes were also comparable to those with Pt/C cathodes. However, the cost of Mo2N nanobelt catalyst ($ 31/m2) was much less than that of Pt/C catalysts ($ 1930/m2). Furthermore, the biofilm microbiomes at electrodes were studied using the PacBio sequencing of full-length 16S rRNA gene. It indicated Stenotrophomonas nitritireducens as a putative electroactive bacterium dominating the anode biofilm microbiomes. The majority of dominant species in the Mo2N and Pt/C cathode communities belonged to Stenotrophomonas nitritireducens, Stenotrophomonas maltophilia, and Comamonas testosterone. The dominant populations in the cathode biofilms were shaped by the cathode materials. This study demonstrated Mo2N nanobelt catalyst as an alternative to Pt catalyst for H2 production in MECs.
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Affiliation(s)
- Sidan Lu
- Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Baiyun Lu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Guangcai Tan
- Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - William Moe
- Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Wangwang Xu
- Department of Mechanical & Industrial Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Ying Wang
- Department of Mechanical & Industrial Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Defeng Xing
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Xiuping Zhu
- Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA.
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