Details

Autor(en) / Beteiligte

• Leal, Juan H.
• Moore, Cameron M.
• Sutton, Andrew D.
• Semelsberger, Troy A.

Titel

Surface energy of air fractionated corn stover

Ist Teil von

• Industrial crops and products, 2019-10, Vol.137 (C), p.628-635

Ort / Verlag

United States: Elsevier B.V

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •γsab is the major contributor to total surface energy in all samples.•γsab of corn stover is dominated by basic sites.•Thermal treatment of corn stover increased γst, predominately from the increase in γsab interactions.•γsd for all air fractionated corn stover samples remained relatively unchanged.•Leafy fractions have a higher surface energy (i.e., higher hydrophilicity) than the stalk, sheath, or cob fractions. Despite decades of research, Integrated Biorefineries (IBRs) are still not commercially viable because of the long-standing, unresolved challenges related to biomass solids handling and transport (e.g., flowability and fouling), and pretreatment e.g., wettability and conversion). The compendium of challenges facing IBRs lead to operational reliability and time-on-stream estimates of 30%, yet economically viable IBRs require greater than 90% operational reliabilities. The performance of commercial solids handling operations is largely dependent on the fundamental thermodynamic property, surface energy. Combining surface area, thermogravimetric, and inverse gas chromatography analyses, we show the observed differences in surface energy (e.g., wettability and work of cohesion) for anatomically air fractionated corn (Zea mays L.) stover. This study highlights the importance of understanding and tuning biomass surface energy to improve IBR solids handling and transport, and pretreatment operations.