Biochar : saturated hydraulic conductivity and methylene blue sorption characteristics as applied to storm water treatment Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/6969z3489

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  • This study evaluates the use and efficacy of biochar for treatment of source and nonpoint source pollutants in storm water. Biochar is the solid byproduct of incomplete combustion of biomass under low-oxygen and elevated temperature conditions (Keiluweit, 2010, Beesley and Dickinson, 2011, Bracmort, 2010). The source stock for tested biochar was chicken litter (500 °C), Douglas fir (550 °C) and gasification derived biochar (700 °C). This study involved screening three distinct biochars to investigate particle size characteristics, performing constant head column studies to measure saturated hydraulic conductivity, and investigating the sorption rates of three biochars using methylene blue solute batch studies for three different weights (2, 5, and 10 [and 20 g for chicken litter]). Results of the hydraulic conductivity test revealed hydraulic conductivity values of 0.32 cm/s for Douglas fir (r² 0.93), 0.10 cm/s for gasification (r² 0.76) and 9.0 for chicken litter derived biochar (r² 0.34). Although it is likely that the conductivity reading for chicken litter was invalid due to turbulence. The methylene blue sorption studies results indicate that each biochar showed slightly different sorption rates. Compared to the two other biochars gasification derived biochar had the greatest adsorption rate of methylene blue dye. Douglas fir had the next highest adsorption rate and chicken litter derived biochar had the lowest adsorption rate.
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  • description.provenance : Submitted by Perry Morrow (morrowp@onid.orst.edu) on 2013-06-18T22:32:13Z No. of bitstreams: 2 license_rdf: 1370 bytes, checksum: cd1af5ab51bcc7a5280cf305303530e9 (MD5) MorrowPerryR2013.pdf: 1113892 bytes, checksum: 6b606da40c92483b35ff1a118d62b20f (MD5)
  • description.provenance : Approved for entry into archive by Julie Kurtz(julie.kurtz@oregonstate.edu) on 2013-06-19T17:23:47Z (GMT) No. of bitstreams: 2 license_rdf: 1370 bytes, checksum: cd1af5ab51bcc7a5280cf305303530e9 (MD5) MorrowPerryR2013.pdf: 1113892 bytes, checksum: 6b606da40c92483b35ff1a118d62b20f (MD5)
  • description.provenance : Made available in DSpace on 2013-07-02T22:27:57Z (GMT). No. of bitstreams: 2 license_rdf: 1370 bytes, checksum: cd1af5ab51bcc7a5280cf305303530e9 (MD5) MorrowPerryR2013.pdf: 1113892 bytes, checksum: 6b606da40c92483b35ff1a118d62b20f (MD5) Previous issue date: 2013-06-07
  • description.provenance : Submitted by Perry Morrow (morrowp@onid.orst.edu) on 2013-06-12T19:30:24Z No. of bitstreams: 2 license_rdf: 1089 bytes, checksum: 0a703d871bf062c5fdc7850b1496693b (MD5) MorrowPerryR2013.pdf: 1113892 bytes, checksum: 6b606da40c92483b35ff1a118d62b20f (MD5)
  • description.provenance : Approved for entry into archive by Laura Wilson(laura.wilson@oregonstate.edu) on 2013-07-02T22:27:57Z (GMT) No. of bitstreams: 2 license_rdf: 1370 bytes, checksum: cd1af5ab51bcc7a5280cf305303530e9 (MD5) MorrowPerryR2013.pdf: 1113892 bytes, checksum: 6b606da40c92483b35ff1a118d62b20f (MD5)
  • description.provenance : Rejected by Julie Kurtz(julie.kurtz@oregonstate.edu), reason: Your ScholarsArchive@OSU submission has been rejected because you attached a CC0 or Public Domain License to your work. These licenses mean that you have "dedicated the work to the public domain by waiving all of your rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. Others can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission." We strongly suggest that you don't attach either of these licenses. We're assuming you probably meant to add a Creative Commons license to your work so that others could use it, but you intended to retain your copyrights. Please re-submit* your work and choose "Creative Commons License" from the License Type drop down box. You'll then be asked two questions about how you want people to use your work. You can also choose "No Creative Commons License". *To re-submit your work, log into ScholarsArchive@OSU. Your rejected submission will be in your Submissions & Tasks work file. You can just resume the submission. All your information will still be in the form; you need to change only the CC License page. on 2013-06-18T15:38:21Z (GMT)

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