Publications

Journal Publications

  1. Shahini, S., Judge, W.D., Tam, J., Azimi, G., “Design, fabrication, and characterization of porous yttria-stabilized zirconia ceramics for hot gas filtration applications,” Advanced Engineering Materials, 1700941, 1-10 (2018). doi:10.1002/adem.201700941.
  2. Yao, Y., Farac, N.F., and Azimi, G., “Supercritical Fluid Extraction of Rare Earth Elements from Nickel Metal Hydride Battery,” ACS Sustainable Chemistry & Engineering 6, 1417-1426 (2018). doi: 10.1021/acssuschemeng.7b03803.
  3. Tam, J., Palumbo, G., Erb, U., and Azimi, G., “Robust Hydrophobic Rare Earth Oxide Composite Electrodeposits,” Advanced Materials Interfaces 4, 1700850 (1-11) (2017), doi: 10.1002/admi.201700850.
  4. Reid, S., Tam, J., Yang, M., and Azimi, G., “Technospheric Mining of Rare Earth Elements from Bauxite Residue (Red Mud): Process Optimization, Kinetic Investigation, and Microwave Pretreatment,” Scientific Reports 7, Article number: 15252 (2017), doi:10.1038/s41598-017-15457-8.
  5. Ang, C.A., Zhang, F., and Azimi, G., “Waste Valorization Process: Sulfur Removal and Hematite Recovery from High Pressure Acid Leach Residue for Steelmaking,” ACS Sustainable Chemistry and Engineering 5, 8416-8423 (2017). doi: 10.1021/acssuschemeng.7b02245.
  6. Judge, W.D., and Azimi, G., “Thermodynamic Investigation of the Reduction-Distillation Process for Rare Earth Metals Production,” JOM 69, 1987-1991 (2017). doi: https://doi.org/10.1007/s11837-017-2473-9.
  7. Judge W. D., Allanore A., Sadoway D. R., and Azimi G., “E-logpO2 Diagrams for Ironmaking by Molten Oxide Electrolysis.” Electrochimica Acta 247, 1088-1094 (2017). doi: http://doi.org/10.1016/j.electacta.2017.07.059.
  8. Walawalkar, M., Nichol, C., and Azimi, G., “An Innovative Process for the Recovery of Consumed Acid in Rare-Earth Elements Leaching from Phosphogypsum,” Ind. Eng. Chem. Res. 55, 12309−12316 (2016). doi: 10.1021/acs.iecr.6b03357.
  9. Walawalkar, M., Nichol, C., Azimi, G., “Process investigation of the acid leaching of rare earth elements from phosphogypsum using HCl, HNO3, and H2SO4”, Hydrometallurgy, 166, 195-204 (2016) doi:10.1016/j.hydromet.2016.06.008.
  10. Cai, Y., Coyle, T. W., Azimi, G., Mostaghimi, J, “Superhydrophobic Ceramic Coatings by Solution Precursor Plasma Spray” , Nature Scientific Reports, 6, 24670 (2016).
  11. Stoerzinger,  K. A., Hong, W. T., Azimi, G., Giordano, L., Lee, Y.-L., Crumlin, E. J., Biegalski, M. D., Bluhm, H, Varanasi, K. K. & Shao-Horn, Y. “Reactivity of Perovskites with Water: Role of Hydroxylation in Wetting and Implications for Oxygen Electrocatalysis“, Journal of Physical Chemistry C, 19, 18504–18512 (2015).
  12. Khan, S. Azimi, G., Yildiz, B. & Varanasi, K.K. “Role of surface oxygen-to-metal ratio on the wettability of rare-earth oxides,” Appl. Phys. Lett., 106, 061601 (2015).
  13. Azimi, G., Kwon, H. & Varanasi, K.K. “Superhydrophobic surfaces by laser ablation of rare-earth oxide ceramics,” MRS Communications, 4, 95-99 (2014).
  14. Azimi, G., Cui, Y., Sabanska, A. & Varanasi, K.K. “Scale-resistant surfaces: fundamental studies of the effect of surface energy on reducing scale formation,” Applied Surface Science, 313, 591-599 (2014).
  15. Subramanyam, S.B., Azimi, G. & Varanasi, K.K. “Designing lubricant-impregnated textured surfaces to resist scale formation,” Advanced Materials Interfaces, 1, 1–6 (2014).
  16. Ates, A., Azimi, G., Choi, K.H., Green, W.H. & Timko, M.T. “The role of catalyst in supercritical water desulfurization,” Applied Catalysis B: Environmental, 147, 144–155 (2014).
  17. Azimi, G., Dhiman, R., Kwon, H.M., Paxson, A.T. & Varanasi, K.K. “Hydrophobicity of rare-earth oxide ceramics,Nature Materials, 12, 315–320 (2013).
  18. Azimi, G. & Papangelakis, V.G. “Mechanism and kinetics of gypsum-anhydrite transformation in aqueous electrolyte solutions,” Hydrometallurgy, 108, 122–129 (2011).
  19. Azimi, G. & Papangelakis V.G. “The solubility of gypsum and anhydrite in simulated laterite pressure acid leach solutions up to 250°C,” Hydrometallurgy, 102, 1–13 (2010).
  20. Azimi, G., Papangelakis, V.G. & Dutrizac, J.E. “Development of a chemical model for the solubility of calcium sulphate in zinc processing solutions,” Can. Metall. Quart. 49, 1–8 (2010).
  21. Azimi, G. & Papangelakis, V.G. “Thermodynamic modeling and experimental measurement of calcium sulphate in complex aqueous solutions,” Fluid Phase Equilibria, 290, 88–94 (2010).
  22. Azimi, G., Papangelakis, V.G. & Dutrizac, J.E. “Development of an MSE-based chemical model for the solubility of calcium sulphate in mixed chloride–sulphate solutions,” Fluid Phase Equilibria, 266, 172–186 (2008).
  23. Azimi, G., Papangelakis, V.G. & Dutrizac, J.E. “Modeling of calcium sulphate solubility in concentrated multi-component sulphate solutions,” Fluid Phase Equilibria, 260, 300–315 (2007).
  24. Seyfkar, N., Azimi, G., Ghotbi, C. & Taghikhani, V. “Application of non‑primitive MSA-based models in predicting the activity and osmotic coefficients of aqueous electrolyte solutions,” Fluid Phase Equilibria, 221, 189–196 (2004).
  25. Ghotbi, C., Azimi, G., Taghikhani, V. & Vera J.H. “On the correlation of the activity coefficients in aqueous electrolyte solutions using the K-MSA model,” Ind. Eng. Chem. Res. 42, 1279–1284 (2003).

Refereed Conference Publications

  1. Judge, W.D., Azimi, G., “Electrochemical behaviour of iron in molten oxides,” ECS Trans. (2018) 85(4) 91-102.
  2. Anawati, J., Reid, S., Azimi, G., “An innovative and sustainable valorisation process to recover rare earth elements from Canadian bauxite residue – synthetic oxalate precipitation study,” 2018, Y. Pontikes (ed.) In Proceedings of the 2nd International Bauxite Residue Valorisation and Best Practices Conference BR2018, 393-399.
  3. Tam, J.,  Erb, U., Azimi, G., “Non-Wetting Nickel-Cerium Oxide Composite Coatings with Remarkable Wear Stability,” MRS Advances (2018),
  4. Lambert, A., Tam, J., and Azimi, G. “Microwave Treatment for Extraction of Rare Earth Elements from Phosphogypsum,” The Minerals, Metals & Materials Series, Kim et al. (Eds): Rare Metal Technology 2017, Chapter 5, 1-7, 2017.
  5. Walawalkar, M., Nichol, C., Azimi, G., “Leaching of rare earth elements from phosphogypsum (by-product of phosphate fertilizer production)”, In: COM2016, Rare Earth ElementsSymposium, Quebec City, QC, Sep. 11-15, 2016.
  6. Walawalkar, M., Nichol, C., Azimi, G., “Sustainable processing of phosphogypsum waste stream for the recovery of valuable rare earth elements”, In: TMS2016, REWAS 2016: Enabling Sustainability through Materials Processing and Waste Valorization Symposium, Nashville, TN, Feb. 14-18, 2016.
  7. Azimi, G., Dhiman, R., Kwon, H.M., Paxson, A.T. & Varanasi, K.K. “Non-wetting rare-earth oxide ceramics with applications to sustained hydrophobicity”, In: COM 2014, Symposium: Rare Earth Elements (REE) Extraction, Processing, Separation and Economics, Vancouver, BC, Sep. 28 – Oct. 1, 2014.
  8. Azimi, G. & Papangelakis, V.G. “Chemical modeling of calcium sulphate phase equilibria in multicomponent electrolyte solutions,” In: AIChE Annual Meeting, Philadelphia, PA, Nov. 16-21, 2008.
  9. Azimi, G., Adams, J.F., Jones, M., Liu, H. & Papangelakis, V.G. “Chemical modeling of calcium sulphate solubility in hydrometallurgical process solutions,” In: Sohn International Symposium, Advanced Processing of Metals and Materials, TMS, San Diego, CA, vol.3, pp. 416–426, Mar. 12-16, 2006.

Intellectual Properties

Awarded

  1. Azimi, G., Paxson, A., Smith, D., Varanasi, K.K., “Liquid-impregnated Rare-earth Based Ceramic Surfaces,” Patent number: 9,309,162B2, Published: April 12, 2016.

Applied

  1. Azimi, G., Yao, Y., Zhang, J., Anawati, J., “Method and system for supercritical fluid extraction of metal,” USPTO Application 62/651,848 (filed on 04/03/2018).
  2. Azimi, G., Cui, Y., Smith, D.J., Varanasi, K.K. “Articles and methods providing scale-phobic surfaces,” USPTO Application 15/881,669 (filed on 01/26/2018).
  3. Cai, Y., Coyle, T.W., Mostaghimi, J., & Azimi, G., “Solution precursor plasma sprayed (“Spps”) ceramic superhydrophobic coatings, processes for applying the coatings and articles coated with same,” USPTO Application 62/158,068 (filed on 05/07/2015).
  4. Khan, S., Azimi, G., Paxson, A.T. & Varanasi, K.K., “Improving longevity of rare earth oxide coatings using an adhesion layer,” USPTO Application 14/528,799 (filed on 10/30/2014).
  5. Azimi, G., Varanasi, K.K., Dhiman, R., Paxson, A.T. & Kwon, H.M. “Hydrophobic materials incorporating rare-earth elements and methods of manufacture,” USPTO Application 13/428,652 (filed on 3/23/2012).
  6. Subramanyam, S. B., Azimi, G., Smith, D.J. & Varanasi, K.K. “Articles and methods providing liquid-impregnated scale-phobic surfaces,” Provisional United States Application 61/771, 486 (filed on 3/1/2013).
  7. Cui, Y., Paxson, A.T., Azimi, G. & Varanasi, K.K. “Devices and methods for providing nanostructures and articles made thereby,” Provisional United States Application 61/800, 485 (filed on 3/15/2013).

Invited Talks

  1. Azimi, G., “Innovative extraction, recycling, and utilization of rare earth elements,” 17th Brazilian Mining Congress & EXPOSIBRAM 2017, Belo Horizonte, Brazil, September 20, 2017.
  2. Azimi, G., “Laboratory For Strategic Materials: where materials science and process engineering meet,” University of Guelph, July 13, 2017.
  3. Azimi, G., “Metals of Future: extraction and recycling of strategic rare earth metals,” UTEC: University of Engineering and Technology, Lima, Peru, June 26, 2017.
  4. Azimi, G., “Laboratory For Strategic Materials: where materials science and process engineering meet”, Brazil-Canada Seminar/Roundtable on Rare Earth Elements (REE) – Prospects for Cooperation in Research, Development and Innovation, March 7, 2017.
  5. Azimi, G., “Laboratory for Strategic Materials: where materials science and process engineering meet,” Presented in UT^2 workshop at the University of Tokyo, Japan, June 2016.

Conference Presentations

  1. Yao, Y., Reid, S. , Walawalkar, M., Farac, N., Zhang, F.v, Carter, B., and Azimi, G., “Novel technologies for technospheric and urban mining of rare earth elements from phosphogypsum, red mud, hybrid car batteries, and wind turbine magnets,” Invited Keynote, TMS2018, Phoenix, Arizona, USA, March 11-15, 2018.
  2. Ang, C.A., Zhang, F., and Azimi, G., “Recovery of hematite from HPAL residue of laterite ore,” Conference of Metallurgists (COM2017), Vancouver, BC, Canada, August 27-30, 2017.
  3. Ko, O., Reid, S., and Azimi, G., “Technospheric mining of rare earth elements from landfilled stocks of industrial process residues: phosphogypsum and red mud,” 28th Rare Earth Research Conference, Ames, Iowa, USA, June 18-22, 2017.
  4. Reid, S., Walawalkar, M., and Azimi, G., “Valorization of rare earth-containing landfilled stocks of industrial process residues: phosphogypsum and red mud,” 2nd conference on European Rare Earth Resources, Santorini, Greece, May 28-31, 2017.
  5. Lambert, A., Tam, J.,Walawalkar M., and Azimi, G., “Microwave treatment for extraction of rare earth elements from phosphogypsum,” TMS 2017 conference, San Diego, California, USA, February 26-March 2, 2017.
  6. Walawalkar, M., Nichol, C., and Azimi, G., “Leaching of rare earth elements from phosphogypsum (by-product of phosphate fertilizer production)”, COM 2016 conference, Quebec City, QC, Sep. 11-15, 2016.
  7. Reid, Sable, and Azimi, G., “Recovery of rare earth elements from red mud”, In COM2016, Symposium: Rare Earth Elements, Quebec City, QC, Sep. 11 – 15, 2016.
  8.  Ang, Cheen Aik, and Azimi, G., “Recovery of hematite from high-pressure acid leach residue”, COM2016, Symposium: Iron Control in Hydrometallurgy, Quebec City, QC, Sep. 11 – 15, 2016.
  9.  Shahini, Shayan, and Azimi, G., “Rare earths containing ceramic membranes for high temperature gas filtration”, COM2016, Symposium: Rare Earth Elements, Quebec City, QC, Sep. 11 – 15, 2016.
  10.  Walawalkar, M. Nichol, C., and Azimi, G., “Leaching of rare earth elements from phosphogypsum (by-product of phosphate fertilizer production)”, COM2016, Symposium: Rare Earth Elements, Quebec City, QC, Sep. 11 – 15, 2016.
  11.  Azimi, G., “LABORATORY FOR STRATEGIC MATERIALS: where materials science and process engineering meet,” UT^2 workshop at the University of Tokyo, Japan, June 2016.
  12.  Walawalkar, M. Nichol, C., and Azimi, G., “Sustainable processing of phosphogypsum waste stream for the recovery of valuable rare earth elements”, TMS2016 conference, Nashville, TN, February 2016.
  13.  Walawalkar, M. Nichol, C., and Azimi, G., “Recovery of rare earths from phosphoric acid production waste material”, CSChE2015 conference, Calgary, AB, October 2015.
  14.  Walawalkar, M. and Azimi, G., “Extraction of Rare Earth Materials from Phosphogypsum”, Presented in COM2015 conference, Toronto, ON, August 2015.
  15. Azimi G., Varanasi K.K. “Non-wetting rare-earth oxide ceramics with applications to sustained hydrophobicity,” COM 2014, Vancouver, BC, September 2014.
  16. Azimi, G., Dhiman, R., Kwon, H.M., Paxson, A.P., and Varanasi, K.K. “Hydrophobicity of rare-earth oxide ceramics with applications to sustained dropwise condensation,” MRS, Boston, MA, December 2013.
  17. Azimi G., and Varanasi K.K. “Hydrophobic rare-earth oxide ceramics with applications to sustained dropwise condensation,” ASME Summer Heat Transfer Meeting; Minneapolis, MN, July, 14–19, 2013.
  18. Azimi G., and Varanasi K.K. “Development of superhydrophobic nano-structured ceramics for high efficiency power generation,” TMS Annual Meeting & Exhibition, Orlando, FL, Mar. 11–15, 2012.
  19. Azimi G., Cui Y., Smith D.J., and Varanasi K.K. “Nano-engineered surfaces and coating technologies for scale remediation,” MRS Fall Meeting & Exhibit, Boston, MA, Nov. 28–Dec. 2, 2011.
  20. Azimi G., Cui Y., Smith D.J., and Varanasi K.K. “Development of scale-phobic surfaces by investigating scale nucleation and adhesion properties of nano-engineered surfaces and coatings,” ASME International Mechanical Engineering Congress & Exposition, Energy and water scarcity, Denver, CO, Nov. 11–17, 2011.
  21. Azimi G., Allanore A., and Sadoway R.D. “Molten oxide electrolysis application to steelmaking: a new approach of slag science?” TMS Annual Meeting & Exhibition, San Diego, CA, Feb. 27–Mar. 3, 2011.
  22. Paramore D.J., Kim H., Allanore A., Azimi G., and Sadoway D.R. “Inert anode development for molten oxide electrolysis,” 218th ECS Meeting, Las Vegas, NV, October 10–15, 2010.
  23. Azimi G., and Papangelakis V.G. “Calcium sulphate scaling in hydromet systems,” 25th OLI Simulation Conference, Morris Plains, NJ, Nov. 16–17, 2010.
  24. Azimi G., and Papangelakis V.G. “Solubility measurements and thermodynamic modeling of CaSO4 in hydrometallurgical solutions,” 8th World Congress of Chemical Engineering, Montreal, QC, Aug. 23–27, 2009.
  25. Azimi G., and Papangelakis V.G. “Thermodynamic modeling and experimental measurement of calcium sulphate solubility in complex aqueous solutions,” 17th Symposium on Thermo-physical Properties, Boulder, CO, June 24–27, 2009.
  26. Azimi G., and Papangelakis V.G. “Thermodynamics of calcium sulphate in hydrometallurgical solutions,” 92nd Canadian Chemistry Conference and Exhibition, CSC2009, Hamilton, ON, June 1-3, 2009.
  27. Azimi G., and Papangelakis V.G. “Development of a database for a speciation-based chemical model for aqueous phase equilibria,” 58th Canadian Chemical Engineering Conference, Ottawa, ON, Oct. 19-22, 2008.
  28. Azimi G., Papangelakis V.G., and Dutrizac J.E. “Development of a chemical model for the solubility of calcium sulphate in zinc processing solutions,” COM2008: CIM, Winnipeg, MB, August 24-17, 2008.
  29. Azimi G., Roshdi S., Jones M., and Papangelakis V.G. “Chemical modeling of phase equilibria and speciation in hydrometallurgical processes,” COM2007: Cu2007, CIM, Toronto, ON, Canada. (Poster)
  30. Azimi G., Liu H., and Papangelakis V.G. “Chemical modeling of calcium sulphate solubility in sulphate media,” COM 2006: Global Partnerships & Technical Innovation, CIM, Montreal, QC, Canada. (Poster)
  31. Ghotbi C., Azimi G., and Taghikhani V. “Application of non-primitive-MSA-based models in predicting the activity and osmotic coefficients of aqueous electrolyte solutions,” 53rd CSChE, Hamilton, ON, Oct. 26-29, 2003.