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Title:	Ceramic-based zirconia membrane, novel clay earthenware and novel kaolin earthenware as separators in microbial fuel cell
Authors:	Siti Mariam Daud (P77965)
Supervisor:	Wan Ramli Wan Daud, Prof. Dato' Ir. Dr.
Keywords:	Microbial fuel cells Fuel cells Membranes (Biology) Universiti Kebangsaan Malaysia -- Dissertations Dissertations, Academic -- Malaysia
Issue Date:	7-Oct-2019
Description:	Microbial fuel cell (MFC) is a technology that has the ability to generate electricity and treating wastewater simultaneously. A membrane, as part of the components in MFC, greatly affects the fuel cell's performance. In this study, the performances of four different membranes in MFC applications are compared, which included the commercialized Nafion 117 membrane, ceramic membrane (CM), novel clay earthenware (NCE), and novel kaolin earthenware (NKE). For biofouling observation, the CMs were tested in MFCs system untill 12 months to observe deterioration of membranes and reduced performance of MFCs, compared to PEM, Nafion 117. The self-fabricated NCE and NKE were higher porosity than CMs were used as a model. The fabricated NKE coated with polibenzimidazole (PBI) function as proton conductor. However, the study did not modify the NCE with PBI because second stage to test the fabricated porous membrane with greater porosity than CM as a model. The PBI is characterized using Fourier Transform Infrared Spectroscopy (FTIR). The CM, NCE and NKE materials were characterized using Field Emission Scanning Electron Microscopy (FESEM), Atomic Force Microscopy (AFM) and Archimedes test. The NCE and NKE membranes were fabricated using ball milling method to produce uniform arrangement of separators, and then sintered them in furnace at 1200 oC. Porosity of the CM, NCE and NKE were tested by using Archimedes test where CM (CM1 11.05%, CM2 11%, CM3 13.8%), NCE (NCE10 9%, NCE20 21%, NCE30 30%) and NKE (NKE10 12%, NKE20 23%, NKE30 34%). After two months tested in MFC system under batch mode operation, MFCs used NKE30-PBI generated the highest maximum power density (2450 ±25 mW/m2 ), maximum current density (10.5 A/m2 ), lowest ohmic resistance (7.9 ± 7 Ω) and internal resistance (71 Ω), followed by MFC equipped with NCE30 (2250 ± 21 mW/m2 , 6.0, 8.1 Ω, 75 ± 24 Ω), CM3 (1790 ± 60 mW/m2 , 3.5 A/m2 , 9.09 ± 7.4 Ω, 125 ± 2 Ω). and Nafion 117 (1225 ± 20 mW/m2 , 2.5 A/m2 , 21.1 ± 5.2 Ω, 400 ± 10 Ω).. The NKE30-PBI showed the highest power density, the lowest ohmic and internal resistance. The NKE30 generated 8.2% increased of power output than NCE30. The trend of power density showed that, increased porosity generated increased power output because of high proton transportation from anode to cathode chamber. Besides, another critical factor affects performance of MFC is ionic concentration gradient in MFCs with CM3 showed the highest cations transfer compared to PEM. As a conclusion, NKE30-PBI and NCE30 membrane are the promising candidates to replace Nafion 117 in MFC application.,Ph.D.,Certification of Master's / Doctoral Thesis" is not available
Pages:	126
Call Number:	TK2931.S568 2019 3 tesis
Publisher:	UKM, Bangi
Appears in Collections:	Fuel Cell Institute / Institut Sel Fuel

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