Heavy metal adsorption on iron oxide and iron oxide-coated silica ...

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BIOGRAPHICAL SKETCHAuthor: Ying XuDegree: Doctor of PhilosophyDate: October 2005Undergraduate and Graduate Education:• Doctor of Philosophy in Environmental Engineering,New Jersey Institute of Technology, Newark, NJ, 2005• Master of Engineering in Chemical Engineering,China University of Petroleum, Beijing, P. R. China, 1995• Bachelor of Engineering in Petroleum Refining Engineering,China University of Petroleum, Dongying, Shandong Province, P. R. China, 1992Major: Environmental EngineeringPresentations and Publications:Xu, Y.; Axe, L.; Yee, N. and J. A. Dyer (2005) Surface complexation modeling of heavy<strong>metal</strong> <strong>adsorption</strong> and competition on goethite (submitted).Xu, Y.; Axe, L.; Boonfueng, T.; Tyson, T.; Trivedi, P.; and Pandya K. (2005) Ni(II)complexation to amorphous hydrous ferric oxide: an x-ray absorption spectroscopystudy (submitted).Xu, Y.; Boonfueng, T.; Axe, L.; Maeng, S.; and Tyson, T. (2005) Surface complexationof Pb(II) on amorphous iron oxide and manganese oxide: spectroscopic and timestudies (submitted).Xu, Y. and Axe, L. (2005) Synthesis and characterization of iron oxide-coated silica andits effect on <strong>metal</strong> <strong>adsorption</strong>. I Colloid and Interface Sci., 282 (1) 11-19.Boonfueng, T.; Axe, L.; and Xu, Y. (2005) Properties and structure of manganese oxidecoatedclay. I Colloid and Interface Sci., 281 (1) 80-92.iv
Fan, M.; Boonfueng, T.; Xu, Y.; Axe, L.; and Tyson, T. A. (2005) Modeling Pb sorptionto microporous amorphous oxides as discrete particles and coatings. I Colloid andInterface Sci., 281 (1) 39-48.Xu, Y. and Axe, L. (2004) Characterization and Pb <strong>adsorption</strong> to iron oxide-coated silica.Proceedings of the Eleventh International Symposium on Water-Rock Interaction(Ed. Wanty, R.B. and Seal, R.R.II), Taylor & Francis Group plc, London, UK,2004, 1425-1429.Xu, Y.; Axe, L.; and Boonfueng, T. Iron Oxide Coatings and <strong>Heavy</strong> Metal Adsorption onIron Oxide-Coated Silica: Macroscopic, Spectroscopic, and Modeling Studies. 2005AEESP Research and Education Conference, Clarkson University, NY, July 24-27,2005.Xu, Y. and Axe, L. Goethite coated silica: synthesis, characterization, and its impact onNi <strong>adsorption</strong>. 228th American Chemical Society (ACS) National Meeting,Symposium Honoring Professor Charles O'Melia, Philadelphia, PA, August 22-26,2004.Xu, Y. and Axe, L. Characterization and Pb <strong>adsorption</strong> to iron oxide-coated silica. 11thWater Rock Interaction Symposium, Saratoga Springs, NY, June 27-July 2, 2004.Xu, Y.; Axe, L.; Maeng, S.; Trivedi, P.; Boonfueng, T.; Tyson, T. A.; and Pandya, K.Adsorption of heavy <strong>metal</strong>s on iron oxide coated silica. 226 ACS National Meeting,New York, NY, United States, Sept. 7-11, 2003.Fan, M.; Xu, Y.; Boonfueng, T.; Yuan, W.; Axe, L.; and Tyson, T. A. Intraparticlesurface diffusion of lead in amorphous aluminum, iron, and manganese oxides.Extended Abstracts presented at the 226th ACS National Meeting, 43(2), 1119-1124, 2003.Xu, Y. and Axe L. <strong>Heavy</strong> <strong>metal</strong> competition on iron oxide coated silica. ACS 77thColloid and Surface Science Symposium, Georgia Institute of Technology, Atlanta,GA, Jun. 15-18, 2003.v
Page 1 and 2: Copyright Warning & RestrictionsThe
Page 3 and 4: ABSTRACTHEAVY METAL ADSORPTION ON I
Page 5 and 6: HEAVY METAL ADSORPTION ON IRON OXID
Page 7: APPROVAL PAGEHEAVY METAL ADSORPTION
Page 11 and 12: ACKNOWLEDGMENTI would like to expre
Page 13 and 14: TABLE OF CONTENTS(Continued)Chapter
Page 15 and 16: TABLE OF CONTENTS(Continued)Chapter
Page 17 and 18: LIST OF TABLES(Continued)TablePageB
Page 19 and 20: LIST OF FIGURES(Continued)FigurePag
Page 21 and 22: LIST OF FIGURES(Continued)FigurePag
Page 23 and 24: CHAPTER 1INTRODUCTIONHeavy<
Page 25 and 26: 3and Sigg, 1992; Gunneriusson et al
Page 27 and 28: CHAPTER 2OXIDES AND THEIR EFFECT ON
Page 29 and 30: 7et al. 1996; Green-Pedersen et al.
Page 31 and 32: 9identify components, distribution,
Page 33 and 34: 11oxides. Because extraction method
Page 35 and 36: 13Table 2.2 Some Coating Work and C
Page 37 and 38: 15increasing the sorbate concentrat
Page 39 and 40: 17mole Cu g-1 goethite (-1-7% of th
Page 41 and 42: 19Overall, macroscopic adso
Page 43 and 44: 21hematite (up to 9.9 limo' Pb ril-
Page 45 and 46: 23concentration in their system was
Page 47 and 48: 25Surface complexation modeling (SC
Page 49 and 50: 27Overall, surface complexation mod
Page 51 and 52: 29Spectroscopic techniques, especia
Page 53 and 54: 31• Understand the effect of comp
Page 55 and 56: 33existing in almost all soils and
Page 57 and 58: CHAPTER 4EXPERIMENTAL METHODSIn thi
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37included coating temperature (T),
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39generated at 45 kV and 40 mA, sca
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41PZC include electrophoretic mobil
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43Lin-edge, from 8,133 to 8,884 eV
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CHAPTER 5CHARACTERIZATION OF IRON O
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47measured by potentiometric titrat
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Table 5.2 XRD Data of Alfa Aesar (A
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51Table 5.3 XRF Results for Alfa Ae
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Figure 5.4 Particle size distributi
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55Figure 5.5 ESEM micrograph for Al
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585.2.5 Surface Charge Distribution
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Figure 5.10 Potentiometric titratio
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CHAPTER 6SYNTHESIS AND CHARACTERIZA
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Figure 6.1 Comparison between Fecon
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Figure 6.2 XRD patterns for goethit
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68iron oxide coatings at 60 °C, go
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70substrate diameter of 0.2 mm, an
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72goethite and silica results in on
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Figure 6.7 ESEM micrograph (9000x)
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76Furthermore, because discrete goe
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78Table 6.2 Surface Area and Porosi
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Figure 6.10 Surface charge distribu
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Figure 6.11 Ni adsorption</
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84that for pure silica, and the goe
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Table 7.1 Sample Preparation Condit
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Figure 7.2 EXAFS spectra of Pb/HFO
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Figure 7.3 Fourier transform and fi
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Figure 7.4 Fourier transform and fi
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Table 7.3 EXAFS Results of Pb/HFO S
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967.2 Fe XAS of Iron Oxides and Pb/
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Figure 7.7 EXAFS spectra of iron ox
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100and Venturelli, 1999). Overall t
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102(hematite, goethite, akaganeite,
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104adsorption proc
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106of pH, ionic strength, Pb loadin
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Figure 8.1 Ni adsorption</s
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110high metal load
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Figure 8.3 x(k)•k3 spectra and Fo
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Figure 8.4 (k)•k3 spectra of Ni-H
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Figure 8.5 Fourier transforms (magn
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118be fit using either Fe or Ni ato
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1208.3 EXAFS Analysis of FeThe x(k)
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Table 8.4 EXAFS Results of HFO and
Page 146 and 147:
CHAPTER 9SURFACE COMPLEXATION MODEL
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Figure 9.1 Potentiometric titration
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128Table 9.1 Surface Reactions and
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Page 154 and 155:
132Table 9.2 Model Parameters for N
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Page 158 and 159:
1369.3 Zn Adsorption on GoethiteReg
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Figure 9.6 Zn adsorption</s
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140data over a broad range of condi
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142Figure 9.8 Ni adsorption
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144oxide-coated silica. Ni and Zn s
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Page 170 and 171:
Figure 10.2 Zn adsorption</
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152one for GACS (2.77x10 -6 mole si
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Figure 10.6 Zn adsorption</
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CHAPTER 11CONCLUSIONS AND FUTURE WO
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158surfaces are needed for successf
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Figure A.2 Ni speciation in 1x10 -5
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Figure A.4 Pb speciation in 5x10 -8
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Figure A.6 Zn speciation in 1x10 -5
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166Table B.2 Potentiometric Titrati
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168Table BA Potentiometric Titratio
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170Table C.3 Zn Adsorption Edges on
Page 194 and 195:
APPENDIX DADSORPTION STUDIES ON SIL
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174Table D.5 Zn Adsorption Isotherm
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176Table E.3 Pb CBC Study on 0.3 g
Page 200 and 201:
APPENDIX GINTRAPARTICLE DIFFUSION M
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180DofA = flier ^ 2fA = Exp(-fD * f
Page 204 and 205:
REFERENCES1. Adamson A. W. (1982) P
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18426. Blake R. L., Hessevick R. E.
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18650. Combes J. M., Manceau A. and
Page 210 and 211:
18876. Elzinga E. J. and Sparks D.
Page 212 and 213:
190102. Gupta V. K. (1998) Equilibr
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192126. Joshi A. and Chaudhuri M. (
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194150. Liu C. and Huang P. M. (200
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196175. Muller B. and Sigg L. (1992
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200. Perry R. H. and Green D. W. (1
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200226. Scheinost A. C., Kretzschma
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202252. Swallow C. K., Hume D. N. a
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204278. Villalobos M., Trotz M. A.
Page 228:
304. Zhong Z. Y., Prozorov T., Feln
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