Composition-Preserving Extraction and Characterization of Biomass Extrinsic and Intrinsic Inorganic CompoundsClick to copy article linkArticle link copied!
- Kyungjun LeeKyungjun LeeMaterials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United StatesMore by Kyungjun Lee
- Sougata RoySougata RoyMaterials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United StatesMore by Sougata Roy
- Ercan CakmakErcan CakmakMaterials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United StatesMore by Ercan Cakmak
- Jeffrey A. LaceyJeffrey A. LaceyBiological and Chemical Processing Department, Idaho National Laboratory, Idaho Falls, Idaho 83415, United StatesMore by Jeffrey A. Lacey
- Thomas R. WatkinsThomas R. WatkinsMaterials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United StatesMore by Thomas R. Watkins
- Harry M. MeyerHarry M. MeyerMaterials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United StatesMore by Harry M. Meyer
- Vicki S. ThompsonVicki S. ThompsonBiological and Chemical Processing Department, Idaho National Laboratory, Idaho Falls, Idaho 83415, United StatesMore by Vicki S. Thompson
- James R. KeiserJames R. KeiserMaterials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United StatesMore by James R. Keiser
- Jun Qu*Jun Qu*E-mail: [email protected]. Phone: +1-865-576-9304.Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United StatesMore by Jun Qu
Abstract

The inorganic content of biomass impairs size reduction tool life and the conversion process. Conventional ash extraction relies on furnace combustion that inevitably alters the inorganic compounds due to oxidation and decomposition. This study developed composition-preserving methods for extracting and analyzing extrinsic and intrinsic inorganic compounds. Comprehensive characterization was carried out on selected biomass feedstocks, including corn stover, pine residue, and pine anatomical fractions, to reveal their inorganic species and morphology. The extrinsic inorganic compounds were found to be dominated by quartz, along with other minor minerals, such as albite, microcline, and gehlenite, and have particle sizes ranging from tens to hundreds of micrometers. Among the pine anatomical fractions, the needles contain the highest intrinsic silicon content while the bark trapped the most extrinsic minerals. By correlation of the total ash and extrinsic inorganic contents to the wear behavior, both the extrinsic and intrinsic inorganic compounds were concluded to have made significant contributions to the wear process. The results here validated a new approach to characterize inorganic compounds in biomass and provided fundamental insights for their potential impact on preprocessing tool wear.
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