rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    non sort: The
    title: effect of certain chemical additives on the physical and chemical properties of montmorillonitic clays
  name:
    name part: Law, James Pearce.
    role:
      role term: creator
  name:
    name part: Bloodworth, Morris E.
    role:
      role term: degree supervisor.
  name:
    name part: Hacskaylo, Joseph
    role:
      role term: degree committee member.
  name:
    name part: Kunze, George W.
    role:
      role term: degree committee member.
  name:
    name part: Meyers, Edward A.
    role:
      role term: degree committee member.
  name:
    name part: Smerdon, E. T.
    role:
      role term: degree committee member.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: theses
  genre: Academic theses.
  origin info:
    place:
      place term: txu
    date issued: 1965
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: 138 leaves illustrations
  abstract: The use of surface active chemicals in agricultural applications has greatly increased and continued to become more diversified in recent years. The development and growth of the chemical branch of "agribusiness" has taken place with little apparent concern for the potential effects that certain of the chemical ingredients might have on the physical and chemical properties of the soils upon which they are deposited. One of the primary concerns of this study was to investigate those potential effects and to determine, if possible, the extent to which they might detrimental or possibly beneficial to certain physical and chemical soil properties. Further objectives were: (a) To investigate the effects of the surface active chemicals on the surface reactions of clays, with particular emphasis on the swelling and shrinking of montmorillonite; (b) to develop a better understanding of the absorption mechanisms involved; and (c) to gain further knowledge concerning their influence on soil structural properties. To accomplish those objectives, kaolinite and three montmorillonitic clays were selected for study, along with two soils known to be high in montmorillonite: Houston Black clay soil and Lufkin fine sandy loam subsoil. Three anionic, three cationic, and two nonionic surface active chemicals were selected to cover a wide range of molecular weights. The clays and soils were treated with each surfactant at three well-chosen treatment rates. Quantitative adsorption was determined, and the adsorption mechanisms were studied by x-ray diffraction and thermal methods. Their effect on swelling of montmorillonite was studied by two methods and their effect on certain physical and structural characteristics of the two soils was investigated. The anionic surfactants were adsorbed only in very small quantities and exerted their greatest influence lowering on swelling, and on physical and structural soil properties by their effective lowering of the surface tension of the liquid ph…
  note: Ph. D. in Soil Physics Texas A & M University
  subject:
    topic: Major soil physics
  classification: S593 L38
  identifier: http://proxy.library.tamu.edu/login
  identifier: https://hdl.handle.net/1969.1/DISSERTATIONS-176800
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: https://hdl.handle.net/1969.1/DISSERTATIONS-176800
  record info:
    record content source: TXA
    record creation date: 791127
    record change date: 20220103135242.0
    record identifier: in00000171467
    language of cataloging:
      language term: eng