Quality of bio-oil from catalytic pyrolysis of microalgae Chlorella vulgaris

Nur Hidayah Zainan, Srikanth Chakravartula Srivatsa, Fanghua Li, Sankar Bhattacharya

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138 Citations (Scopus)


This study investigates the yield and quality of bio-oil produced from catalytic and non-catalytic pyrolysis of microalgae Chlorella vulgaris using Ni supported zeolite (Si/Al = 30) prepared by two different methods, ion exchange (IE) and wet impregnation (WI) to examine the effect of catalyst preparation methods on the bio-oil quality. The experiments were also conducted to investigate the effect of different temperatures (300–600 °C) and catalyst to algae ratio (1:5, 1:2, 1:1 and 2:1) on the yield and quality of bio-oil. The results showed that catalytic pyrolysis using Ni supported zeolites produced high hydrocarbon, less oxygenated and acid compounds compared to non-catalytic pyrolysis. The catalyst preparation method did not affect the yield but had an effect on the bio-oil composition. The results obtained from this study are useful in developing the catalytic pyrolysis process to refine bio-oils for commercial use.

Original languageEnglish
Pages (from-to)12-19
Number of pages8
Publication statusPublished - 1 Jul 2018


  • Bio-oil
  • Catalytic pyrolysis
  • Chlorella vulgaris
  • Fixed bed reactor
  • Metal-loaded zeolites

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