Thermo-Catalytic Reforming of spent coffee grounds

Bioresources and Bioprocessing

Mohamed Elmously¹  Andreas Apfelbacher¹  Andreas Hornung¹  Robert Daschner¹  Nils Jäger¹ 

[1] Fraunhofer UMSICHT, Fraunhofer Institute for Environmental, Safety, and Energy Technology;

关键词: Intermediate pyrolysis;    TCR®;    Spent coffee grounds;    Catalytic reforming;    Sustainable fuels;   

DOI  :  10.1186/s40643-019-0281-5

来源: DOAJ

【 摘 要 】

Abstract Conversion of spent coffee grounds through the Thermo-Catalytic Reforming system (TCR®) is evaluated in this study. While, the TCR® is a technology that has been developed by Fraunhofer UMSICHT, which combines an intermediate pyrolysis and a catalytic reforming. The temperature of the catalytic reformer is varied between 500 and 700 °C to achieve an optimum yield quantities and qualities of the products. The hydrogen concentration is maximized at a reforming temperature of 700 °C, and a gas yield up to 52 wt% is achieved. The thermal stable bio-oil produced at 700 °C has the highest calorific value of 36.8 MJ/kg with significantly low oxygen and water content, low viscosity and low TAN (total acid number). Furthermore, the maximum bio-oil and char yields are obtained at the lowest reforming temperature of 500 °C. Overall spent coffee grounds show a great potential as feedstock in the Thermo-Catalytic Reforming for energy and bio-chemicals production.

【 授权许可】

Unknown