Determination of optimum densification conditions for production of corn stover pellets

Apoorva Karamchandani, Hojae Yi, Virendra M. Puri

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

2 Scopus citations

Abstract

In the United States, more than three-fourth of the agricultural crop residue resource is corn stover. Densification of biomass is an effective way to manage and transport corn stover as bio-feedstock. In this research, physical and mechanical properties of ground corn stover were determined. Densification characteristics of corn stover were studied using a lab-scale die and roller pellet mill to understand the densification process, and to determine the optimum densification conditions for production of corn stover pellets. The effects of densification process variables such as moisture content (17.5% and 20% on wet basis) and particle size (size reduction machinery used with two different screen sizes-: 3.175 mm and 6.35 mm) on the densification characteristics of corn stover were studied. Conditioned material of 3.175 mm screen size at 20% and 6.35 mm screen size at 17.5% formed better pellets than other combinations tested. Physical and mechanical properties of those selected bio-feedstock and pellets were measured. Durability and strength of pellets are important properties which are indicative of the quality of pellets. The durability index for pellets formed at these selected conditions was higher than 95%. Pellets have stronger axial compressive strength (10 MPa) than diametral tensile strength (5 MPa).

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
Pages888-891
Number of pages4
ISBN (Print)9781627486651
StatePublished - Jan 1 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

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Bioengineering

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  • Cite this

    Karamchandani, A., Yi, H., & Puri, V. M. (2013). Determination of optimum densification conditions for production of corn stover pellets. In American Society of Agricultural and Biological Engineers Annual International Meeting 2013, ASABE 2013 (pp. 888-891). (American Society of Agricultural and Biological Engineers Annual International Meeting 2013, ASABE 2013; Vol. 2). American Society of Agricultural and Biological Engineers.