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Removal of Nitrophenols by Modified Attapulgite

  • Kartonierter Einband
  • 116 Seiten
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This thesis concerns with the use of Iraqi Clay (attapulgite) for the removal of hazardous organic water pollutants, namely o-nitr... Weiterlesen
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Beschreibung

This thesis concerns with the use of Iraqi Clay (attapulgite) for the removal of hazardous organic water pollutants, namely o-nitrophenol, m-nitrophenol and p-nitrophenol from their aqueous solutions. Attapulgite was modified by surfactant (hexadecyltrimethylammonium bromide (HDTMA)). Attapulgite and its modified form (A-HDTMA), were purified, sampled and characterized by X-ray diffraction (XRD), FTIR spectroscopy, scanning electron microscope (SEM) and energy dispersive X ray spectroscopy (EDS) technique. Batch experiments were carried out at pre determined equilibration time, solution pH, adsorbent dosage, ionic strength, initial nitrophenols concentration and temperature. The results show that the maximum adsorption capacity for o-nitrophenol, m-nitrophenol and p-nitrophenol of the two clays are in the order: p-nitrophenol o-nitrophenol m-nitrophenol. Adsorption of nitrophenols was strongly affected by pH and best adsorption is achieved at pH 7.2. The maximum nitrophenols adsorption capacities increased from 1.438, 1.242 and 1.072 mg.g-1 of p-nitrophenol, o-nitrophenol and m-nitrophenol, respectively on raw attapulgite clay to 3.226, 3.076 and 2.988 mg g-1 for A-HDTMA.

Autorentext

Ph.D.of polymer Chemistry (University of Sussex, ton,U.K).M.Sc. and B.Sc. both from University of Baghdad. His research interest includes synthesis of liquid crystal materials and environmental chemistry. He has published 108 research papers and 12 patents. He is currently a professor of physical Chemistry at the University of Baghdad

Produktinformationen

Titel: Removal of Nitrophenols by Modified Attapulgite
Untertitel: Removal of o-, m-, and p-Nitrophenol by Surfactant-modified Attapulgite
Autor:
EAN: 9783659235061
ISBN: 3659235067
Format: Kartonierter Einband
Anzahl Seiten: 116
Gewicht: 189g
Größe: H220mm x B150mm x T7mm
Veröffentlichung: 01.09.2012
Jahr: 2012
Auflage: Aufl.