Recycling nickel from spent catalyst of Phu My fertilizer plant as a precursor for exhaust gas treatment catalysts preparation

  • Nguyen Le-Phuc
  • Thuy Ngoc Luong
  • Tri Van Tran
  • Yen Thi Hai Pham
  • Phuong Thuy Ngo
  • Sura Nguyen
SPECIAL FEATURE: ORIGINAL ARTICLE 3rd 3R International Scientific Conference (3rd 3RINCs 2016)
First Online:
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Accepted:

Abstract

In this study, a very promising way of treating and recycling spent nickel catalysts of fertilizer plants in Vietnam was proposed. Firstly, nickel was recovered from spent catalyst using HNO3—leaching process. Results show that nickel recovery of over 90% with a purity of over 90% can be achieved with HNO3 2.1–2.5 M at 100 °C in 75 min. The residue after leaching is not considered as a hazardous waste according to the Vietnamese regulations. Then, the leachate solution was used as a precursor to prepare a model catalyst for exhaust gas (CO, HC, NOx) treatment. In comparison with the catalyst prepared from the commercial nickel nitrate solution, the catalyst synthesized from recovered nickel exhibits similar properties and activities. The influence of Ni loading of Ni/alumina catalyst as well as the modification of active phase by some metals addition (Mn, Ba, Ce) was also investigated. It is feasible to modify active phase by transition metals such as Mn, Ba, and Ce for complete oxidation of CO and HC at 270 °C and a reduction of NOx below 350 °C at high volumetric flow condition (GHSV = 110.000 h−1).

Keywords

Spent catalyst Fertilizer plant Leaching CO-HC oxidation NOx reduction 
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Notes

Acknowledgements

Funding of this work was provided by the Ministry of Industry and Trade of the Socialist Republic of Vietnam (grant 02/HD-DT.13/CNMT)

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Copyright information

© Springer Japan 2017

Authors and Affiliations

  • Nguyen Le-Phuc
    • 1
  • Thuy Ngoc Luong
    • 1
  • Tri Van Tran
    • 1
  • Yen Thi Hai Pham
    • 1
  • Phuong Thuy Ngo
    • 1
  • Sura Nguyen
    • 1
  1. 1.PetroVietnam R&D Center for Petroleum ProcessingVietnam Petroleum InstituteHo Chi Minh cityVietnam

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