Performance of trickling bed microbial fuel cell treating isopropyl alcohol vapor: Effects of shock-load and shut-down episodes

Liu, Shuhui; Lin, Hsin Hui; Wen, Shin; Lin, Chi‐Wen

doi:10.1016/j.chemosphere.2019.02.149

Cited by 23 publications

(7 citation statements)

References 28 publications

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“…The obtained power density was higher than that obtained by the isopropanol treatment by TB-MFC (53.2 mW/m 3 ) (Table S2), in which a two-chamber MFC was assembled into an BTF. 20 Moreover, the corresponding current at maximum power density was also improved and reached to 1.48 A/m 3 , comparing with that obtained by TB-MFC (∼0.58 A/m 3 ). Comparation of maximum power density reported in our study with that of MFC used to treat toluene-contained groundwater and exhaust is provided in Table S2.…”

Section: ■ Results and Discussionsupporting

confidence: 52%

“…These results suggested that acetate was more feasible for electricity production by EABs than toluene. The obtained power density was higher than that obtained by the isopropanol treatment by TB-MFC (53.2 mW/m 3 ) (Table S2), in which a two-chamber MFC was assembled into an BTF . Moreover, the corresponding current at maximum power density was also improved and reached to 1.48 A/m 3 , comparing with that obtained by TB-MFC (∼0.58 A/m 3 ).…”

Section: Resultsmentioning

confidence: 74%

“…This result was consistent to the previously reported results obtained by TB-BTF and BTF. 8,14,20 The low removal efficiency at high toluene concentration might be the limiting rate of gas phase toluene transferred to the liquid phase. 22 In addition, the reaction of microbial metabolism would be limited by mass transfer and then the slight drop of removal efficiency was obtained under the high concentration of toluene in gas.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Simultaneous Removal of Toluene in Gas and Electricity Production by Using a Single-Chamber Microbial Fuel Cell-Biotricking Filter System

Wang

Dai

et al. 2022

ACS Sustainable Chem. Eng.

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Biotrickling filters (BTFs) combined with microbial fuel cell (MFC) provide a sustainable approach to remove volatile organic compounds accompanied by electricity production. In this study, an integrate system (SMFC-BTF) combining singlechamber MFC with BTF is constructed and used to remove toluene-containing gas. A stable removal efficiency of ∼80% is obtained for the 800 ppm toluene accompanied with the current output of 0.25 mA, indicating the feasibility of SMFC-BTF for the simultaneous removal of toluene and electricity production. Moreover, the removal efficiency increases to 95% when the inlet toluene concentration is below 400 ppm under the empty bed retention time of 180s. The detection of intermediate products reveals that cresol, benzyl alcohol, hydroxybenzoic acid, and dihydroxybenzoic acid are produced during the oxidation of toluene by aerobic and anaerobic microorganisms. Accordingly, the pathways of toluene degradation in SMFC-BTF are proposed. The significant difference of microbial species growing in different parts of SMFC-BTF suggests that the process of toluene removal in the system is spatial difference. Our results provide a promising system for the simultaneous removal of toluene and energy recovery.

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Section: ■ Results and Discussionsupporting

confidence: 52%

Section: Resultsmentioning

confidence: 74%

Section: ■ Results and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Simultaneous Removal of Toluene in Gas and Electricity Production by Using a Single-Chamber Microbial Fuel Cell-Biotricking Filter System

Wang

Dai

et al. 2022

ACS Sustainable Chem. Eng.

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“…Biotrickling filters (BFs), a common biological treatment technology for gaseous volatile organic compound, have been coupled with MES for treating ethyl acetate in waste gas [22][23][24]. These previous results demonstrated the feasibility of BF-MES integrated systems for coupling the biodegradation of gaseous contaminants with the generation of electricity.…”

Section: Introductionmentioning

confidence: 97%

Performance of a Trickling-Bed Biocathode Microbial Electrochemical System Treating Domestic Wastewater and Functional Microbial Community Characteristics

et al. 2020

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Biocathode microbial electrochemical systems (MESs) that remove nitrogen compounds out of wastewater are of special interest for practice. High energy-input for aeration is one of the barriers that hinder their application on a wider scope. A trickling-bed biocathode MES (TB-MES) was developed by integrating biotrickling filters with a biocathode MES. By recirculating the catholyte and sprinkling it through a spray nozzle, the system was able to achieve a reoxygenation process, which could facilitate the creation of an aerobic and anoxic environment. At an optimal recirculation rate of 200 mL min−1, the TB-MES removed 87.2 ± 2.7% of ammonium nitrogen and 79.7 ± 2.5% of total nitrogen (TN), and simultaneously achieved a maximum power density of 3.8 ± 0.3 Wm−3. Comparable performances were achieved when treating domestic wastewater, which were 84.6 ± 2.4%, 70.1 ± 4.2%, and 3.2 ± 0.2 W m−3 for ammonium nitrogen removal, TN removal, and maximum power density. Pyrosequencing analysis revealed Nitrosomonas was more abundant in the upper portion of the carbon fiber brush biocathode (CFBup, 20.4%) and Azoarcus was more abundant in the lower portion (CFBbottom, 12.6%), which was probably caused by the difference in dissolved oxygen concentration in different parts of the biocathode. The TB-MES shows great promise for domestic wastewater treatment by employing biotrickling filters for oxygen supply in biocathode MES.

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“…With regard to the electrochemical performance, it must be stated that the operational conditions maintained during the process influence the steady-state power density exerted by an MFC [41][42][43].…”

Section: Introductionmentioning

confidence: 99%

The Influent Effects of Flow Rate Profile on the Performance of Microbial Fuel Cells Model

et al. 2020

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The energy contained in wastewaters has been identified as a promising sustainable energy resource that could be harvested by using microbial fuel cells (MFC). When dealing with real wastewaters, the MFCs should be able to manage high flow rates and flow rates fluctuations. In this work, the short-term effects of the influent flow rate variations on the performance of a microbial fuel cell has been studied. With this aim, the influent flow rate was stepwise increased from 0.72 to 7.2 L/d and then stepwise decreased. The obtained results indicate that, on the one hand, an increase in the influent flow rate leads to higher chemical oxygen demand removal rates up to 396 g/(L/d) and higher electric power generation almost 18 mW/m2, but to lower coulombic efficiencies. On the other hand, the reduction of the flow rate increases the coulombic efficiencies, as well as the percentage of chemical oxygen demand removed, but decreases electric power generation. In the short-term, the exposition to higher influent flow rates causes the growth of the microbial population of the MFC, the growth of the non-electrogenic microorganisms being higher than that of the electrogenic ones. The higher growth of non-electrogenic microorganisms may lead to lower coulombic efficiencies.

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Performance of trickling bed microbial fuel cell treating isopropyl alcohol vapor: Effects of shock-load and shut-down episodes

Cited by 23 publications

References 28 publications

Simultaneous Removal of Toluene in Gas and Electricity Production by Using a Single-Chamber Microbial Fuel Cell-Biotricking Filter System

Simultaneous Removal of Toluene in Gas and Electricity Production by Using a Single-Chamber Microbial Fuel Cell-Biotricking Filter System

Performance of a Trickling-Bed Biocathode Microbial Electrochemical System Treating Domestic Wastewater and Functional Microbial Community Characteristics

The Influent Effects of Flow Rate Profile on the Performance of Microbial Fuel Cells Model

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