Relationship between biomass feedstock electrical capacitance and bulk density during compression

Yuesheng Tan, Zewei Miao, Tony E. Grift, K. C. Ting

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Biomass feedstock in general and herbaceous feedstock in particular, is characterized by a low bulk density, low energy density and high variability in chemical and physical composition. Mechanical pre-processing such as size reduction and densification can significantly improve feedstock properties. To commercialize feedstock production on a large scale, there is a need for precise, instantaneous methods allowing the measurement of material properties. The objective of this study was to investigate the relationship between biomass electrical capacitance and bulk density during mechanical densification. A lab-scale hydraulic compressor was built and employed by combining two lateral and two vertically oriented capacitor plates into a mini-bale compression chamber. A MatLab® data acquisition system was developed to record pressure, plunger position and biomass capacitance simultaneously. The experimental design included three feedstock types (Miscanthus, switch grass and sugarcane bagasse), one particle size (ground through a 6.35-mm screen by a hammer mill) and three moisture levels (air-dry (oven-dried at 49°C for 72 h), 13% and 17.5% of moisture content). The results showed significant relationships between biomass capacitance and bulk density during compression. Biomass moisture significantly increased biomass capacitance but did not affect the positive relationships between bulk density and capacitance. The study showed that electrical capacitance may serve as a proxy measure for biomass density.

Original languageEnglish (US)
Title of host publicationAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2013, ASABE 2013
PublisherAmerican Society of Agricultural and Biological Engineers
Pages1044-1053
Number of pages10
ISBN (Print)9781627486651
StatePublished - 2013
EventAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2013 - Kansas City, MO, United States
Duration: Jul 21 2013Jul 24 2013

Publication series

NameAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2013, ASABE 2013
Volume2

Other

OtherAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2013
CountryUnited States
CityKansas City, MO
Period7/21/137/24/13

Keywords

  • Biomass conductance
  • Densification
  • Energy crops
  • Moisture content
  • Physical property

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Bioengineering

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  • Cite this

    Tan, Y., Miao, Z., Grift, T. E., & Ting, K. C. (2013). Relationship between biomass feedstock electrical capacitance and bulk density during compression. In American Society of Agricultural and Biological Engineers Annual International Meeting 2013, ASABE 2013 (pp. 1044-1053). (American Society of Agricultural and Biological Engineers Annual International Meeting 2013, ASABE 2013; Vol. 2). American Society of Agricultural and Biological Engineers.