Fly ash Utilization in Preparation of Nickel-Catalyst for CO Oxidation

Authors

  • Manish Agrawal Indian Institute of Technology Kanpur
  • Ankit Modi
  • Pranveer Singh Satvat
  • Vidya Batra

Abstract

Industries especially thermal power plants and steel mills produce fly ash as byproduct in huge quantity on coal combustion. Safe and sustainable disposal of fly ash is still challenge to environmental engineers. Conventionally, it disposes as dump in the open that causes severe menaces like entering heavy metals in food chain through air and water medium. The paradigm shifts in fly ash management since nineties extended its employability in making cement and other construction materials, paving roads and embankments, and ameliorating soils. However, about 40% of total fly ash is still unutilized and disposes as dump in India. Espousing the same concept of effective utilization of fly ash, the present research took over to develop fly ash supported nickel catalyst for oxidation of globally distributed air pollutant- CO (Carbon monoxide). The fly ash is pretreated with acids and is utilized as supportive material for nickel loading from its nitrate salt. The catalytic activities for CO oxidation have been analyzed over Gas Chromatography at three temperatures of 25oC, 250oC, and 500oC. The nitric acid pretreatment resulted in highest increment in surface area fly ash, and higher temperature led to better oxidation of CO gas. On over all basis, it can be deduced that the fly ash supported nickel catalyst is effective in CO oxidation. 

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Published

2016-11-17