Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2016 Feb:201:287-92.
doi: 10.1016/j.biortech.2015.11.065. Epub 2015 Nov 28.

Integration of decentralized torrefaction with centralized catalytic pyrolysis to produce green aromatics from coffee grounds

Li Chai  1 , Christopher M Saffron  2 , Yi Yang  3 , Zhongyu Zhang  1 , Robert W Munro  1 , Robert M Kriegel  4
Affiliations

Integration of decentralized torrefaction with centralized catalytic pyrolysis to produce green aromatics from coffee grounds

Li Chai et al. Bioresour Technol. 2016 Feb.

Abstract

The aim of this work was to integrate decentralized torrefaction with centralized catalytic pyrolysis to convert coffee grounds into the green aromatic precursors of terephthalic acid, namely benzene, toluene, ethylbenzene, and xylenes (BTEX). An economic analysis of this bioproduct system was conducted to examine BTEX yields, biomass costs and their sensitivities. Model predictions were verified experimentally using pyrolysis GC/MS to quantify BTEX yields for raw and torrefied biomass. The production cost was minimized when the torrefier temperature and residence time were 239°C and 34min, respectively. This optimization study found conditions that justify torrefaction as a pretreatment for making BTEX, provided that starting feedstock costs are below $58 per tonne.

Keywords: Aromatics; Biomass; Catalysis; Pyrolysis; Torrefaction.

PubMed Disclaimer

Similar articles

See all similar articles

Publication types

LinkOut - more resources