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Volume 8, Issue 5 (Suppl)

J Bioremediat Biodegrad, an open access journal

ISSN: 2155-6199

Biofuels Congress 2017

September 05-06, 2017

September 05-06, 2017 | London, UK

Biofuels and Bioenergy

World Congress on

Use of 4-dodecylbenzenesulfonic acid catalyst on the methanolysis of the rapeseed oil in meso-integral

baffled reactor

Luma Sh. Al-Saadi, Alexandra Alegría, Valentine Eze

and

Adam P Harvey

Newcastle University / Chemical engineering and advanced materials, UK

his study investigates the use of 4-dodecylbenzenesulphonic acid (DBSA) as a catalyst for fatty acid methyl ester (FAME)

production fromrapeseedoil, using amesoscale oscillatory baffled reactor (“meso-OBR”) as a screening platform.The effects

of oscillatory mixing intensity, methanol-to-oil molar ratio, catalyst to oil molar ratio and residence time on the conversion to

FAME were evaluated. The reaction conditions were optimised using the Design of Experiments (DoE) methodology. A Box-

Behnken design with one block, three variables (methanol to oil molar ratio, catalyst to oil molar ratio and residence time) and

three replicates of the central point was used. A response surface model was able to predict the FAME conversion over a broad

range of operating conditions. ANOVA analysis revealed that the catalyst to oil molar ratio and residence time were more

significant than the methanol to oil molar ratio. 100% conversion of rapeseed oil to FAME was achieved under mild reaction

conditions 6.5:1 methanol to oil molar ratio, 0.48:1 of catalyst to oil molar ratio and 120min. The DBSA catalyst allowed

operation at a significantly lower molar ratio than in conventional acid catalysis: below 7:1, as opposed to the 9:1 typically used

with sulphuric acid. Furthermore, the degree of agitation required was greatly reduced, due to its behaviour as a surfactant.

Only 180 min was required to accomplish the reaction compared with 19hr that for sulphuric acid. Finally, very little DBSA

catalyst was required (0.18wt %), compared to sulphuric acid (0.5 wt. %), under the reaction conditions investigated here.

The significant reductions in excess methanol and degree of agitation would significantly reduce operating costs, and the

substantial reduction in reaction time would significantly reduce reactor size, and therefore capital cost.

Luma Sh. Al-Saadi et al., J Bioremediat Biodegrad 2017, 8:5(Suppl)

DOI: 10.4172/2155-6199-C1-008