Impacts of Inorganic Material (Total Ash) on Surface Energy, Wettability, and Cohesion of Corn Stover
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- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- North Carolina Agricultural and Technical State Univ., Greensboro, NC (United States)
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Material Physics Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
The impacts and variability of inorganic material (measured as total ash) on surface area, surface energy, wettability, and cohesion of corn stover samples from Iowa were examined. The impact of total ash on the acid component of surface energy was determined to be significant with the acid component increasing with increasing ash content, in particular, the samples with total ash contents greater than 10%. Negligible effects with ash content were observed on both the dispersive and base components of surface energy. The work of cohesion for the compositions of corn stover with varying amounts of total inorganic matter increased with increasing total ash content, giving rise to potential bulk solids handling and transport challenges related to segregation, agglomeration, rat-holing, arching, and discontinuous flow patterns. Both the wettability (hydrophilicity) and work of cohesion increased for compositions of corn stover with increasing total inorganic content. Washing proved effective at removing extrinsic inorganic material from corn stover with a reduction in total ash content from 20.4% to 6.2%, accompanied by a significant reduction (from 85.6 to 42.5 mJ/m2) in the acid component of the surface energy.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Bioenergy Technologies Office (EE-3B); USDOE Office of Energy Efficiency and Renewable Energy (EERE). Bioenergy Technologies Office (EE-3B)
- Grant/Contract Number:
- 89233218CNA000001; AC36-08GO28308
- OSTI ID:
- 1603258
- Report Number(s):
- LA-UR--20-20760; NREL/JA--5100-75793
- Journal Information:
- ACS Sustainable Chemistry & Engineering, Journal Name: ACS Sustainable Chemistry & Engineering Journal Issue: 4 Vol. 8; ISSN 2168-0485
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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