Phase separation of bio-oil produced by co-pyrolysis of corn cobs and polypropylene

D. Supramono, Julianto, Haqqyana, H. Setiadi, M. Nasikin

Research output: Contribution to journalConference articlepeer-review

14 Citations (Scopus)


In co-pyrolysis of biomass-plastics, bio-oil produced contains both oxygenated and non-oxygenated compounds. High oxygen composition is responsible for instability and low heating value of bio-oil and high acid content for corrosiveness. Aims of the present work are to evaluate possibilities of achieving phase separation between oxygenated and non-oxygenated compounds in bio-oil using a proposed stirred tank reactor and to achieve synergistic effects on bio-oil yield and non-oxygenated compound layer yield. Separation of bio-oil into two layers, i.e. that containing oxygenated compounds (polar phase) and non-oxygenated compounds (non-polar phase) is important to obtain pure non-polar phase ready for the next processing of hydrogenation and used directly as bio-fuel. There has been no research work on co-pyrolysis of biomass-plastic considering possibility of phase separation of bio-oil. The present work is proposing a stirred tank reactor for co-pyrolysis with nitrogen injection, which is capable of tailoring co-pyrolysis conditions leading to low viscosity and viscosity asymmetry, which induce phase separation between polar phase and non-polar phase. The proposed reactor is capable of generating synergistic effect on bio-oil and non-polar yields as the composition of PP in feed is more than 25% weight in which non-polar layers contain only alkanes, alkenes, cycloalkanes and cycloalkenes.

Original languageEnglish
Article number012072
JournalIOP Conference Series: Earth and Environmental Science
Issue number1
Publication statusPublished - 9 Nov 2017
Event2nd International Conference on New Energy and Future Energy System, NEFES 2017 - Kunming, China
Duration: 22 Sept 201725 Sept 2017


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