Determining the operating condition for maximum bio-oil production from pyrolysis of Nannochloropsis

Issue Date

8-2017

Abstract

The extent of bio-oil production from pyrolysis of Nannochloropsis oculata was investigated at varying temperatures (400, 500, 600 deg C) and pressures (0, 50, 100 psig) to establish operating conditions that maximizes bio-oil yield. Results showed that bio-oil production is greatly dependent on temperature (p0.001) and pressure (p=0.0048). Using Response Surface Analysis, the best conditions for bio-oil production were determined to be equal to 540°C and 0 psig. At best conditions, liquid product yield was about 43% wt (20% wt aqueous; 23% wt bio-oil) while char and gas yields were approximately equal to 32% wt and 12% wt, respectively. Bio-oil characteristics (i.e. heating value, chemical composition) indicate that it could be a potential replacement for crude oil after further processing. Char and gaseous product, on the other hand, contain considerable energy contents of about 20 MJ kg-1 and 21 MJ m-3, respectively which indicate that these products can also be used as alternative energy sources.

Source or Periodical Title

Philippine Journal of Crop Science

ISSN

0115-463X

Volume

42

Issue

2

Page

37-47

Document Type

Article

Physical Description

graphs; tables

Language

English

En – AGROVOC descriptors

OILS; PYROLYSIS; FUELS; BIOPRODUCTS; CHARS; PETROLEUM; TEMPERATURE

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