Process Calorimetry on Solid-state Fermentation of Vinegar Wastes in Bioreactor with Air Pressure Pulsation

摘要

Solid-state fermentation (SSF) of vinegar wastes saves environmental resources and helps to recover valuable material for lignocellulose purposes.The development of solid-state fermentation technology is very important for the production of cellulase and ultimately for utilization of natural cellulose.However,inadequate dissipation of heat generated by biological activities has prevented solid-state fermentation from large-scale applications.The thermal pattern of internal heat generation affects microbiology during the process.The paper deals with the process of a novel SSF bioreactor with air pressure pulsation.We demonstrate the impact of calorimetric approaches to solid-state fermentation in the laboratory,where heat dissipation calls for a thorough understanding.As a model system,cellulase production was carried out by solid-state fermentation using waste from the vinegar industry,as the substrate of Trichoderma Koningii AS3.4262.A comprehensive characterization of a lab-scale solid-state fermentation reactor was performed.In conclusion,air pressure pulsation significantly enhanced water evaporation and heat dissipation.With these tools we estimated caloric Coefficients and mass to enthalpy ratios.Process calorimetry provided a reliable way to study the kinetics of solid-state fermentation.