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Title: Nano-Scale Hydroxyapatite: Synthesis, Two-Dimensional Transport Experiments, and Application for Uranium Remediation

Journal Article · · Journal of Nanotechnology
DOI:https://doi.org/10.1155/2011/462382· OSTI ID:1198455
 [1];  [2];  [2];  [1]
  1. Department of Systems and Engineering Management, Air Force Institute of Technology, 2950 Hobson Way, WPAFB, Fairborn, OH 45433, USA
  2. Department of Civil Engineering, Auburn University, Auburn, AL 36849, USA

Synthetic nano-scale hydroxyapatite (NHA) was prepared and characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM) methods. The XRD data confirmed that the crystalline structure and chemical composition of NHA correspond to Ca 5 OH(PO 4 ) 3 . The SEM data confirmed the size of NHA to be less than 50 nm. A two-dimensional physical model packed with saturated porous media was used to study the transport characteristics of NHA under constant flow conditions. The data show that the transport patterns of NHA were almost identical to tracer transport patterns. This result indicates that the NHA material can move with water like a tracer, and its movement was neither retarded nor influenced by any physicochemical interactions and/or density effects. We have also tested the reactivity of NHA with 1 mg/L hexavalent uranium (U(VI)) and found that complete removal of U(VI) is possible using 0.5 g/L NHA at pH 5 to 6. Our results demonstrate that NHA has the potential to be injected as a dilute slurry for in situ treatment of U(VI)-contaminated groundwater systems.

Sponsoring Organization:
USDOE
Grant/Contract Number:
FG02-06ER64213
OSTI ID:
1198455
Journal Information:
Journal of Nanotechnology, Journal Name: Journal of Nanotechnology Vol. 2011; ISSN 1687-9503
Publisher:
Hindawi Publishing CorporationCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (27)

Effects of Phosphate on Uranium(VI) Adsorption to Goethite-Coated Sand journal November 2004
Immobilization of Cesium-137 and Uranium in Contaminated Sediments Using Soil Amendments journal January 2001
Synthesis and characterization of biocompatible hydroxyapatite coated ferrite journal December 2003
Time Scales for Sorption−Desorption and Surface Precipitation of Uranyl on Goethite journal August 2001
Lead orthophosphates—IV Formation and stability in the environment journal June 1974
Mechanism of aqueous uranium(VI) uptake by hydroxyapatite journal March 2004
Immobilization of Nickel and Other Metals in Contaminated Sediments by Hydroxyapatite Addition journal January 2001
Uranium removal from groundwater using hydroxyapatite journal August 2008
Effects of Solid-to-Solution Ratio on Uranium(VI) Adsorption and Its Implications journal May 2006
Molecular-Scale Characterization of Uranium Sorption by Bone Apatite Materials for a Permeable Reactive Barrier Demonstration journal October 2003
Effects of pH on Heavy Metal Sorption on Mineral Apatite journal March 1997
Removal of uranium(VI) from aqueous solutions by manganese oxide coated zeolite: discussion of adsorption isotherms and pH effect journal January 2007
Two Dimensional Transport Characteristics of Surface Stabilized Zero-valent Iron Nanoparticles in Porous Media journal February 2008
Sorption of plutonium(VI) by hydroxyapatite journal January 2005
KINETICS OF AQUEOUS Pb REACTION WITH APATITES journal January 2000
Mechanisms of Uranium Interactions with Hydroxyapatite:  Implications for Groundwater Remediation journal January 2002
Retention of Cd, Zn and Co on hydroxyapatite filters journal August 2006
Removal of Metals and Radionuclides Using Apatite and Other Natural Sorbents journal June 2003
Nanosized hydroxyapatite powders derived from coprecipitation process journal January 2002
Radionuclide Sorption onto Low-Cost Mineral Adsorbent journal December 2006
An Apatite II permeable reactive barrier to remediate groundwater containing Zn, Pb and Cd journal August 2006
In situ lead immobilization by apatite journal September 1993
Laboratory-scale investigation of saltwater intrusion dynamics: DYNAMICS OF SALTWATER INTRUSION journal April 2007
Correlation Equation for Predicting Single-Collector Efficiency in Physicochemical Filtration in Saturated Porous Media journal January 2004
Radionuclide removal from water journal May 1979
Structural Characterization of U(VI) in Apatite by X-ray Absorption Spectroscopy journal July 2002
Immobilization of Uranium in Contaminated Sediments by Hydroxyapatite Addition journal December 1998

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