Loading...

Optimization of Effective Parameters in Separating Ammonia from Effluent Anaerobic Digester Slurry (Livestock and Poultry Manure)

Sobhani Kazemi, Farshad | 2015

596 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 47585 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Shayegan, Jalaloddin
  7. Abstract:
  8. The goal of this research is to optimize the parameters of a process through which it would be possible to separate and recovery a considerable portion of ammonia nitrogen available in anaerobic digestion effluent slurry. To achieve this goal, after completing the construction of batch setup (including anaerobic reactor and stripper) and after the digestion of (cow and poultry manure) , the experiments of separation on amounts 9, 10, 11 and 12 of pH and on temperature 14, 25, and 38 celsius degrees were done on digested slurry. Then, the resulting equations of the experimental outcome fitting were used in the optimization of parameters. The results showed that the amount of the parameters of optimization will depend mostly on the percentage of separation, the temperature of slurry influent and ammonia initial concentration. With regard to these results, it was found that the increase in slurry temperature in order to accelerate the separation process is not economical. In this research, during the digestion of materials all of the variables including hydraulic retention time, bacterial retention time, biogas production rate, pH, ammonia nitrogen concentration and total nitrogen, total solid, volatile solid and ash during feeding periods, were measured and concluded that in the digestion process of cow manure no inhibition on methanogensis done whereas bird manure digest ammonia concentration of 5000 ppm of nitrogen has been identified as a inhibition threshold. Moreover, in the completion of the project, a model of the process was prepared and simulated. In this simulation, all the variables affecting the process of ammonia separation such as initial temperature, pH, slurry flow and packing sort were studied and optimized
  9. Keywords:
  10. Anaerobic Digestion ; Parameters Optimization ; Anaerobic Digester Effluent ; Ammonia Recovery ; Stripper Column

 Digital Object List

 Bookmark

No TOC