Loading...

Investigate and Analysis of Experimental Integrated Energy System Based on Microbial Fuel Cell to Produce Electrical Energy, Wastewater Treatment, Carbon Dioxide Capturing and Biomass Production

Bazdar, Elahe | 2016

520 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 48812 (46)
  4. University: Sharif University of Technology
  5. Department: Energy Engineering
  6. Advisor(s): Roshandel, Ramin; Yaghmaei, Soheila
  7. Abstract:
  8. In this study, simultaneous production of bioelectricity and algal biomass, wastewater treatment and carbon dioxide capturing in an Algal-Cathode Photosynthetic Microbial Fuel Cell has been evaluated. The performance of the system under different light intensity (3500, 5000, 7000 and 10000 lux) and also different light:dark regime (24:00, 12:12 and 8:16 hour) has been studied. The results show that, light intensity has direct effects on performance of Photosynthetic Microbial Fuel Cell (PMFC) with changing dissolved oxygen in biological cathode. So, the PMFC can reach power density of 125.96 mW/m3 with optimized light intensity of 5000 lux and simultaneously columbic efficiency and COD removal 77.79% and 5.47%, respectively (in three days). On the other hand, with increasing the light intensity from 3500 to 5000 lux, the power density will increase 60 % and if light intensity change from 5000 to 10000 lux, the power density will decrease 53.4%. However the produced biomass was increased from 3.26 mg/lit to 3.98 mg/lit with increasing the light intensity from 5000 to 10000 lux. But Growth rate was increased with slower slope. Then again, with continuous light exposure, the maximum power density was 12.7% more than power density with intermittent light exposure. But a very long photoperiod led to shorter algal lifetime. This shows that the intermittent light exposure could be beneficial to better and longer performance of PMFC with C. vulgaris biocathode. Also in this study, for evaluating the performance of Algal-Cathode PMFC, optimized mode of this structure was compared with two other structure of dual chamber chemical-cathode MFC and single chamber Air-Cathode MFC in same operational condition. The results of comparison between three different system show positive performance of Algal-Cathode PMFC. So that, the generated power density of PMFC is Just 9.7% less than air-cathode MFC but it is 49.4 % more than cathode-chemical MFC
  9. Keywords:
  10. Light Intensity ; Algal-Cathode Microbial Fuel Cell ; Photosynthetic Microbial Fuel Cell ; Light:Dark Regine ; Air-Cathode Microbial Fuel Cell ; Chemical-Cathode Microbial Fuel Cell

 Digital Object List

 Bookmark

No TOC