Upgrading of bio-oil from the pyrolysis of biomass over the rice husk ash catalysts

2nd International Conference on Chemical Engineering (ICCE) UNPAR

Sutrisno, B.^1 ; Hidayat, A.^1

Chemical Engineering Department, University of Islam Indonesia, Jalan Kaliurang km 14, 5, Yogyakarta

55584, Indonesia^1

关键词: Chemical feedstocks;    Chemical functionality;    Complex mixture;    FTIR analysis;    Gas chromatography-mass spectrometries (GC-MS);    High viscosities;    Possible futures;    Pyrolysis oil;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/162/1/012014/pdf
DOI  :  10.1088/1757-899X/162/1/012014

来源: IOP

【 摘 要 】

The pyrolysis oils are complex mixtures of organic compounds that exhibit a wide spectrum of chemical functionality, and generally contain some water. Their direct use as fuels may present some difficulties due to their high viscosity, poor heating value, corrosiveness and instability. For possible future use as replacements for hydrocarbon chemical feedstocks and fuels, the liquids will require considerable upgrading to improve its characteristics. By esterification of the bio oil as the upgrading method, the properties of the bio-oil could be improved. In the paper, the upgrading of a bio-oil obtained by pyrolysis was studied over rice husk ash catalysts. The raw bio-oil was produced by pyrolysis of rice husk.From the experiment results, it can be concluded that the densities of upgraded bio-oil were reduced from 1.24 to 0.95 g.cm-3, and the higherheating value increased from 16.0 to 27.2 MJ/kg and the acidity of upgraded bio-oil was also alleviated from 2.3 to 4.4. The results of gas chromatography-mass spectrometry (GC-MS) and FT-IR analysis showed that the ester compounds in the upgraded bio-oil increased. It is possible to improve the properties of bio-oil by esterifying the raw bio-oil.