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Table 3 Leaching tests profile of CaMgO and CaZnO

From: Heterogeneous base catalysts for edible palm and non-edible Jatropha-based biodiesel production

Catalysts CaMgO CaZnO
Element contenta(ppm) Ca Mg Ca Zn
Fresh catalyst 17.9 ± 0.5 36.2 ± 0.3 10.0 ± 0.4 74.3 ± 0.7
3rd run b 15.6 ± 0.7 29.8 ± 0.2 8.6 ± 0.3 67.4 ± 0.6
  1. aCa, Mg and Zn content from catalysts were determined by ICP-AES analysis.
  2. bLeaching experiments were conducted in triplicate to determine the content of the CaMgO and CaZnO after reaction in Jatropha oil.