MONITORING OF A DISCONTINUOS DRY FERMENTATION PLANT BASED ON MOBILE BIOGAS CONTAINERS

Jäger, A. (Speaker)

Activity: Talk or presentationOral presentation

Description

Dry fermentation combines the possibility of material utilisation and energy utilisation in a technically simple process. In this work a new and innovative product, the Mobigas Container Biogas Plant, was monitored. Biogenous waste used as substrate. Important technical information was identified by analyzing process parameters such as temperature, pH-value, redox potential, volatile organic acids, and buffer capacity. Due to the discontinuous operation, the process can only be controlled by controlling the starting condition. Special emphasis was laid upon sufficient inoculation of the substrate. This is achieved by reusing digestate of the previous batch. Pilot operations have shown that after a retention time of three weeks the ratio of reused digestate must not be less than 50 percent of the total input. Optimal process parameters, such as constant temperature, are very important to achieve good biogas yields. The container plant is nor commercially available and the development of a liquid phase fermentation system underway.
Period29 May 2015
Event titleFABE 2015: null
Event typeConference
LocationMykonos, Greece