Exploring mechanisms that drive the development of reversible soil hydrophobicity Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/cv43p004g

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • This study focuses on one widespread characteristic of poor soil quality: hydrophobic soil. Previous research has produced conclusive evidence to show that soil hydrophobicity is affected by soil organic matter (SOM) and soil water content (WC). Hydrophobicity that responds to changes in WC is a unique form of surface hydrophobicity and is termed "reversible hydrophobicity" (RHP). Recent experimental results support an amphiphilic model for SOM, which contains mechanisms for the occurrence of RHP. What has not been directly demonstrated, however, are conformational changes in the orientation of amphiphilic moieties as an effect of WC that would be associated with RHP. Quincy soils, which exhibit RHP, were investigated at varying WC using Photoacoustic Fourier transform infrared spectroscopy (Pas-FTIR), chemical analysis of carbon:nitrogen, and physical measurement of hydrophobicity, using the Capillary Rise Method and the Sessile Drop Method, in order to reveal how SOM and water interact to drive the creation of hydrophobic surfaces. This investigation suggests that SOM and water interact at the molecular scale to drive hydrophobic phenomena at the field-scale.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Keyword
Subject
Rights Statement
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Julie Kurtz(julie.kurtz@oregonstate.edu) on 2013-07-01T18:33:22Z (GMT) No. of bitstreams: 1 WoolvertonPriscillaB2013.pdf: 1854422 bytes, checksum: e57700bed4def241de6f2c4601b661cf (MD5)
  • description.provenance : Submitted by Priscilla Woolverton (woolverp@onid.orst.edu) on 2013-06-20T16:46:21Z No. of bitstreams: 1 WoolvertonPriscillaB2013.pdf: 1854422 bytes, checksum: e57700bed4def241de6f2c4601b661cf (MD5)
  • description.provenance : Approved for entry into archive by Laura Wilson(laura.wilson@oregonstate.edu) on 2013-07-16T19:48:14Z (GMT) No. of bitstreams: 1 WoolvertonPriscillaB2013.pdf: 1854422 bytes, checksum: e57700bed4def241de6f2c4601b661cf (MD5)
  • description.provenance : Made available in DSpace on 2013-07-16T19:48:15Z (GMT). No. of bitstreams: 1 WoolvertonPriscillaB2013.pdf: 1854422 bytes, checksum: e57700bed4def241de6f2c4601b661cf (MD5) Previous issue date: 2013-06-07

Relationships

In Administrative Set:
Last modified: 08/04/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items