Abstract: Pyrene Sorption to and Extraction From Corn Stover Char. (ASA, CSSA and SSSA Annual Meetings (Cincinnati, OH- Oct. 21

216-5 Pyrene Sorption to and Extraction From Corn Stover Char.

See more from this Division: ASA Section: Environmental Quality
See more from this Session: Biochar Effects On Soils, Plants, Waters, and Greenhouse Gas Emissions: III

Tuesday, October 23, 2012: 9:15 AM

Duke Energy Convention Center, Room 212, Level 2

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Thomas R. Holm¹, Mike L. Machesky¹ and John W. Scott², (1)State Water Survey, University of Illinois, Champaign, IL
(2)Sustainable Technology Center, University of Illinois, Champaign, IL

Biochar was produced by slow pyrolysis of corn stover at 450, 550, and 700 degrees C. The total concentrations of USEPA priority PAHs were determined by pressurized solvent extraction and gas chromatography-mass spectrometry. The sum of PAH concentrations decreased as pyrolysis temperature increased. Char samples were artifically aged by freezing and heating at 60 and 110°C. Pyrene sorption to fresh and aged chars was characterized by synchronous fluorescence spectrometry. Freundlich isotherms fit the sorption data very well. Pyrene availability was characterized by extraction with hydroxypropyl-beta-cyclodextrin and passive sampling with polyoxomethylene.

See more from this Division: ASA Section: Environmental Quality
See more from this Session: Biochar Effects On Soils, Plants, Waters, and Greenhouse Gas Emissions: III

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