| Title: | Spontaneous Aerosol Ejection: Origin of Inorganic Particles in Biomass Pyrolysis |
| Author(s): | Teixeira AR; Gantt R; Joseph KE; Maduskar S; Paulsen AD; Krumm C; Zhu C; Dauenhauer PJ; |
| Address: | "Department of Chemical Engineering, University of Massachusetts Amherst, 686 North Pleasant Street, Amherst, MA, 01003, USA. Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, MN, 55455-0132, USA. Department of Chemical Engineering, University of Massachusetts Amherst, 686 North Pleasant Street, Amherst, MA, 01003, USA. hauer@umn.edu. Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, MN, 55455-0132, USA. hauer@umn.edu" |
| ISSN/ISBN: | 1864-564X (Electronic) 1864-5631 (Linking) |
| Abstract: | "At high thermal flux and temperatures of approximately 500 degrees C, lignocellulosic biomass transforms to a reactive liquid intermediate before evaporating to condensable bio-oil for downstream upgrading to renewable fuels and chemicals. However, the existence of a fraction of nonvolatile compounds in condensed bio-oil diminishes the product quality and, in the case of inorganic materials, catalyzes undesirable aging reactions within bio-oil. In this study, ablative pyrolysis of crystalline cellulose was evaluated, with and without doped calcium, for the generation of inorganic-transporting aerosols by reactive boiling ejection from liquid intermediate cellulose. Aerosols were characterized by laser diffraction light scattering, inductively coupled plasma spectroscopy, and high-speed photography. Pyrolysis product fractionation revealed that approximately 3 % of the initial feed (both organic and inorganic) was transported to the gas phase as aerosols. Large bubble-to-aerosol size ratios and visualization of significant late-time ejections in the pyrolyzing cellulose suggest the formation of film bubbles in addition to the previously discovered jet formation mechanism" |
| Keywords: | Aerosols *Biomass Cellulose/chemistry Inorganic Chemicals/*chemistry Particle Size Temperature Volatilization biomass calcium cellulose pyrolysis; |
| Notes: | "MedlineTeixeira, Andrew R Gantt, Rachel Joseph, Kristeen E Maduskar, Saurabh Paulsen, Alex D Krumm, Christoph Zhu, Cheng Dauenhauer, Paul J eng Research Support, U.S. Gov't, Non-P.H.S. Germany 2016/04/30 ChemSusChem. 2016 Jun 8; 9(11):1322-8. doi: 10.1002/cssc.201600112. Epub 2016 Apr 29" |
