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Honarparvar, Soraya | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 44243 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Kariminia, Hamid Reza
  7. Abstract:
  8. Microbial Electrolysis is a new method for producing Biohydrogen from oxidation of organic materials by microorganisms. Generally, this process is depended on two different kinds of energy source containing Organic Material Oxidation by bacteria and Electricity. In this specific study, landfill leachate, extracted from ARADKOOH Tehran Iran was used as a carbon source and effective parameters in Microbial Electrolysis Cell were scrutinized for increasing the hydrogen production and efficiency of COD removal in wastewater. Two H-type rectors with 300 ml of volume in each side were used during the experiments. Various amount of voltages started with 0.4 (V), were tested in the system and it was observed that the minimum voltage for producing hydrogen is 0.9 (V) in this specific leachate. Moreover, the influence of two parameters containing “Residence Time” and “Initial Concentration of Wastewater” were scrutinized on the performance of Microbial Electrolysis Cell in minimum voltage which was derived from previous step. To study the Resident Time parameter, two sets of experiments were designed including the runs with long resident time as well as the other runs with short resident time. 22 days was considered as the time length in long resident time runs and in the other hand, 72 hours was considered in short resident time experiments. In the long cycle time studies the amount of produced hydrogen in two different initial COD (100 ppm and 1000 ppm) was scrutinized. The amount of produced hydrogen in the cell with 100 mg/l of initial COD concentration was 570 ml. Also a 56 percent of COD removal efficiency for organic pollutants was observed. Furthermore the amount of produced hydrogen in the cell with 1000 mg/l of initial COD concentration was measured 343 ml with 60 percent of COD removal efficiency. In short resident time cycle, the amount of produced hydrogen for 500 mg/l, 2000 mg/l, 10000 mg/l and 20000 mg/l of initial COD concentration were measured and the results are 100 ml, 389 ml, 284 ml and 286 ml respectively. Moreover the removal efficiency of organic pollutant for mentioned COD concentrations in that system were measured 19%, 21%, 30.5% and 33% respectively
  9. Keywords:
  10. Microbial Fuel Cell ; Microbial Electrolysis Cell ; Landfill Leachate ; Biohydrogen Production

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