Gasification of rice straw in an updraft gasifier using water purification sludge containing Fe/Mn as a catalyst

Kung Yuh Chiang, Yun Xi Lin, Cheng Han Lu, Kuang Li Chien, Ming Hui Lin, Chih Chao Wu, Shan Shin Ton, Jiann Long Chen

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21 Scopus citations

Abstract

This study investigated the feasibility of gasification of rice straw using an Fe/Mn sludge as a catalyst. The Fe/Mn sludge contained iron and manganese compounds produced from a water purification plant. The gasification temperature and equivalent ratio (ER) was set at 900 C and 0.30, respectively, with an amended catalyst ratio of 0%-15%. Experimental results indicated that the combustible gas production was increased from 0.61 m3/kg to 0.72 m3/kg with the Fe/Mn sludge addition. The lower heating value (LHV) of combustible gas and energy density (ED) were also increased with an increase in Fe/Mn sludge addition. The LHV and ED increased from 14.76 MJ/Nm3 to 15.82 MJ/Nm3 and from 1.37 MJ/MJ to 1.47 MJ/MJ, respectively. In conclusion, the catalytic gasification of rice straw was more efficient on an energy yield basis with the Fe/Mn sludge addition. The Fe/Mn sludge used in this research has been developed as a potential catalyst for the application of rice straw gasification.

Original languageEnglish
Pages (from-to)12318-12324
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number28
DOIs
StatePublished - 2013

Keywords

  • Catalyst
  • Gasification
  • Rice straw
  • Sludge

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