Affordable Access

Access to the full text

Recycled eggshells as precursors for iron-impregnated calcium oxide catalysts for partial oxidation of methane

Authors
  • Karoshi, Gourishankar1
  • Kolar, Praveen1
  • Shah, Sanjay B.1
  • Gilleskie, Gary2
  • 1 North Carolina State University, Campus Box 7625, Raleigh, NC, 27695-7625, USA , Raleigh (United States)
  • 2 North Carolina State University, Campus Box 7928, Raleigh, NC, 27695-7928, USA , Raleigh (United States)
Type
Published Article
Journal
Bioresources and Bioprocessing
Publisher
Springer Singapore
Publication Date
Aug 17, 2020
Volume
7
Issue
1
Identifiers
DOI: 10.1186/s40643-020-00336-4
Source
Springer Nature
Keywords
License
Green

Abstract

There is a significant interest in converting eggshells into value-added products. Therefore, the goal of this research is to synthesize and study iron-impregnated eggshells as a catalyst for partial oxidation of methane. The objectives of this research were to test the effects of iron loading, flow rate, oxygen concentration, and temperature on methane oxidation. The catalysts were synthesized using ferric chloride hexahydrate at various loadings and tested in a heated stainless-steel reactor under different experimental conditions. The reaction products included C2–C7 hydrocarbons, carbon monoxide, and carbon dioxide depending on the reaction conditions. Results indicated that iron loading beyond 5 wt% caused a decrease in methane conversion. A decrease in oxygen concentration enhanced methane conversion with a substantial drop in the production of CO2. Besides, an increase in temperature resulted in a decrease in methane conversion with a simultaneous increase in the production of CO2 via overoxidation. The reusability experiments indicated that the catalyst was active for four reaction cycles. Our results indicate that eggshells can be used as catalyst support for methane partial oxidation and can simultaneously solve the waste disposal problems faced by the poultry industry.

Report this publication

Statistics

Seen <100 times