Experimental and Modeling Studies of Torrefaction of Spent Coffee Grounds and Coffee Husk: Effects on Surface Chemistry and Carbon Dioxide Capture Performance.

ABSTRACT: Torrefaction of biomass is a promising thermochemical pretreatment technique used to upgrade the properties of biomass to produce solid fuel with improved fuel properties. A comparative study of the effects of torrefaction temperatures (200, 250, and 300 °C) and residence times (0.5 and 1 h) on the quality of torrefied biomass samples derived from spent coffee grounds (SCG) and coffee husk (CH) were conducted. An increase in torrefaction temperature (200-300 °C) and residence time (0.5-1 h) for CH led to an improvement in the fixed carbon content (17.9-31.8 wt %), calorific value (18.3-25 MJ/kg), and carbon content (48.5-61.2 wt %). Similarly, the fixed carbon content, calorific value, and carbon content of SCG rose by 14.6-29 wt %, 22.3-30.3 MJ/kg, and 50-69.5 wt %, respectively, with inc

SUBMITTER: Mukherjee A 

PROVIDER: S-EPMC8756566 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature