A Study on the Reaction Pathway of Cation and Volatile Acids in a Downflow Multistage Anaerobic Packed Bed Bioreactor

하향흐름 다단식 혐기성 고정층 반응기에서 양이온과 유기산의 반응 경로에 관한 연구

  • 최석규 (경주전문대 환경공업과) ;
  • 김용대 (서강전문대 환경위생과) ;
  • 장인용 (건국대학교 공과대학 화학공학과)
  • Published : 1992.04.01


It has known that the intermediates formed in acid reactions occuring during anaerobic reactions for instance, acetic acid, propionic acid and butyric acid have significant effects or the formations of biogases(e. g. mainly CH$_{4}$ and CO$_{2}$). A study on the effects of these intermediates for the formations of biogases, however, is still on initial stage due to the type and structural problems of reactor. The primary objective of this reserch program is to provide a funadmantal mechanism of involved reactions using a modified downflow multistage pecked bed bioreactor. As a first stage of this reaserch program, the following theoretical principles was applied 1. Principle of electroneutrality where the molar concentrations of cation and anion in solution are the same. 2. Relationship between the concentration of bicarbonate anion and pH as follows [HCO$_{3}^{-}$]= $K_{H}P_{T}Y_{CO_{2}}10^{pH-K_{1}}$ Based upon the above two principles, a series of experimental works was conducted to elucidated the relationship between the concentration of CO$_{2}$ and the pH related to the concentrations of cations and anions.