Vanadium and nickel speciation in pulverized coal and petroleum coke co-combustion

Luis F.O. Silva, Marcos L.S. Oliveira, Carlos H. Sampaio, Irineu A.S. De Brum, James C. Hower

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

Vanadium and nickel in emissions from fossil-fuel combustion and in the fly ash can be an environmental concern. The fly ash from the combustion of a 70% coal/30% petroleum coke blend in a 500 MW pulverized-fuel utility boiler was studied by a variety of X-ray, optical microscopy, and electron beam methods. The fly ash V and Ni are present in heterogeneous silicates, glass, sulfates, oxides and oxyhydroxides, and crystalline and/or amorphous mixed clay minerals, and also in Ni, detrital ferromagnesian silicates. Vanadium- and Ni-bearing spinels are incorporated into magnetite structures. Multiwalled nanotubes encapsulate V and Ni, and C60, C70, and C80 fullerenes and their derivatives are present.

Original languageEnglish
Pages (from-to)1194-1203
Number of pages10
JournalEnergy and Fuels
Volume27
Issue number3
DOIs
StatePublished - Mar 21 2013

ASJC Scopus subject areas

  • General Chemical Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

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