[Kinetic of pH control in anaerobic digestion of organic fraction of municipal solid waste in a batch reactor].
Using a material and ionization balance analysis of anaerobic digestion process, a kinetic model of pH control in a batch anaerobic digestion of organic fraction of municipal solid waste was established on the basis of substrate decay and microbial growth kinetics, and a corresponding computer soft ware was created. The optimal pH in different anaerobic digestion can be predicted by this model. Consequently the maximal methane production can be obtained in anaerobic system by controlling the pH in optimal value. Comparative experiments were conducted to validate the model. The experiments demonstrated that the methane production of anaerobic system under optimal pH was steadier than the same condition under uncontrolled pH, and the cumulative methane production had an average increment about 20%.
Liu
Cun-Fang
CF
College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.
Yuan
Xing-Zhong
XZ
Zeng
Guang-Ming
GM
Li
Wen-Wei
WW
Meng
You-Ting
YT
Fu
Mu-Xing
MX
D001421:Bacteria, Anaerobic / Q000378:metabolism*; D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000382:microbiology*; D002681:China; D002947:Cities; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008697:Methane / Q000032:analysis / Q000378:metabolism; D008962:Models, Theoretical; D009930:Organic Chemicals / Q000302:isolation & purification / Q000378:metabolism*; D012037:Refuse Disposal / Q000379:methods*
D009930:Organic Chemicals; D008697:Methane