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:
    title: Manganese Based Oxidative Technologies For Water/Wastewater Treatment
  name:
    name part: Desai, Ishan
    role:
      role term: creator
    role:
      role term: author.
  name:
    name part: Boulanger, Bryan
    role:
      role term: thesis advisor.
  name:
    name part: Batchelor, Bill
    role:
      role term: thesis advisor.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2014
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 1 online resource.
  abstract: Manganese is a commonly occurring mineral found in soil and sediments that takes part in chemical reactions in groundwater and soil systems. It plays a significant role in controlling the environmental fate and transport of organic and inorganics by facilitating redox reactions. The reactivity of manganese oxides with some emerging contaminants like 4-tert octylphenol (OP) in aqueous systems is yet to be explored. Additionally, manganese's use within treatment systems designed to remove trace organics is yet to be fully developed. This research work explores the reactivity of manganese oxide to degrade OP in aqueous systems. The rate equation has been determined by conducting experiments at various conditions of oxide and organic loading as well as different pH's. The reaction order was found to be approximately equal 1.1 for both oxide as well as the organic. The reactivity was much higher under acidic conditions. The presence of metals and humic acids greatly reduced the reactivity. The primary reaction by-product observed in the system was 4-(2,4,4-trimethylpentan-2yl)benzene-1,2-diol. Magnetic manganese ferrites were further created in the laboratory using a novel combustion method in order to blend the catalytic properties of manganese with the magnetic and structural properties of ferrites. These laboratory prepared catalysts were thoroughly characterized using XRD, SEM, TEM, HR-TEM, and BET. Their magnetic properties have also been studied. These manganese ferrites offer the potential to enhance hydroxyl radical production within catalytic ozonation systems. Thus their catalyst effectiveness was determined by measuring R[subscript ct], ozone exposure, hydroxyl radical production, and ozone decomposition. The effect of catalyst type, catalyst dosage, pre-ozonation, pH, and presence of dissolved organic matter (DOM) on the hydroxyl radical production during catalytic ozonation was also explored. An increase in ozone dosage, catalyst dosage, and PVA content enha…
  note: by Ishan Desai.
  note: "Major Subject: Civil Engineering"
  note: Includes vita.
  note: Doctor of Philosophy Texas A & M University 2013 http://hdl.handle.net/1969.1/151643
  note: Includes bibliographical references.
  note: Text (Dissertation)
  subject:
    topic: Major Civil Engineering
  subject:
    topic: manganese oxide
  subject:
    topic: endocrine disruptors
  subject:
    topic: octylphenol
  subject:
    topic: magnetic
  subject:
    topic: manganese ferrite
  subject:
    topic: catalytic ozonation
  subject:
    topic: advanced oxidation processes
  identifier: http://hdl.handle.net/1969.1/151643
  record info:
    record content source: TXA
    record creation date: 140623
    record change date: 20151206101832.0
    record identifier: in00003453749
    language of cataloging:
      language term: eng