Volumetric scale-up of a three stage fermentation system for food waste treatment.
In this study, a volumetric scale-up of this system was designed and built on a field pilot-scale (total digester volume 10 m(3)), with the results from the field pilot-scale experiments compared with those from the bench-scale (total digester volume 0.4 m(3)) process prior to scale-up. The reduction rate of total chemical oxygen demand (tCOD) and the maximum methane content produced in the biogas from the bench-scale system were 90.6% and 72%; whereas those from the field pilot-scale system were 90.1% and 68%, respectively. The estimated methane yields were 282 and 254 l CH(4)/kg tCOD(degraded) in bench and field pilot-scale fermentation systems, respectively. These results indicate that the three stage fermentation system developed in this study can be applied as a commercial process for the disposal of food waste in view of process stability.
Kim
Jung Kon
JK
Department of Environmental Engineering, BK21 Team for Biohydrogen Production, Chosun University, 375 Seosuk-dong, Dong-gu, Gwangju 501-759, South Korea.
Han
Gui Hwan
GH
Oh
Baek Rock
BR
Chun
Young Nam
YN
Eom
Chi-Yong
CY
Kim
Si Wouk
SW
D000693:Anaerobiosis; D001673:Biodegradation, Environmental; D001674:Bioelectric Energy Sources; D019149:Bioreactors; D001709:Biotechnology / Q000379:methods*; D003247:Conservation of Natural Resources; D005285:Fermentation; D005502:Food; D005740:Gases; D008697:Methane / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry; D010865:Pilot Projects; D012722:Sewage; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000379:methods*
D005740:Gases; D012722:Sewage; D008697:Methane; D010100:Oxygen