Ecological Fluidizing Solvent for Road Bitumen Obtained by Pyrolysis of Mucilages Resulting from the Refining of Sunflower Oil

Mihaela Bombos,Sanda Velea,Dorin Bombos,Gabriel Vasilievici

doi:10.37358/rc.20.3.7995

Abstract

Catalytic pyrolysis of the mucilages resulting from the refining of vegetable oil was performed under optimal conditions for obtaining a flux for road bitumen. The mucilage emulsion was stabilized in a reverse emulsion containing the lipid fraction with a sorbitol-polyethoxylated fatty acid ester type surfactant. The pyrolysis of the mucilages was carried out in a continuous system, in a quartz tubular reactor, positioned in the central area of a vertical furnace. The experimental program was performed in the presence of the Cu catalyst at atmospheric pressure, temperature in the isothermal reaction zone 520 oC and liquid hourly space velocity of 0.5 h-1. The liquid fraction obtained was used to fluidize a road bitumen. The homogeneity of the fluidized bitumen was highlighted by determining the asphaltene content after its solidification.

Highlights

The accentuated industrial development was accompanied by a massive increase in the consumption of fossil raw materials; faced with the depletion of fossil resources and the impact of their use on the environment, the economy must find alternatives for raw materials
From the blackscattering curves it is observed that the stability of the mucilage emulsions has improved with the increase of the content in the Tween 80 emulsifier to 3% wt
The stabilization of the mucilage emulsion resulted in the refining of vegetable oil was achieved by re-emulsifying it in the presence of a nonionic ester type ester of fatty acids with sorbtol polyethoxylated

Summary

Introduction

The accentuated industrial development was accompanied by a massive increase in the consumption of fossil raw materials; faced with the depletion of fossil resources and the impact of their use on the environment, the economy must find alternatives for raw materials. As a precursor to fossil raw materials, biomass is composed of carbon and seems to be one of the best renewable solutions for replacing fossil resources in many applications. The use of biomass for these applications generally requires multi-stage conversions of the raw material. In order to develop such competitive processes, it is necessary to capitalize on the entire biomass content in the biorefines similar to those for the petroleum products. Its conversion by thermochemical methods seems to be a promising alternative for many energy applications [1]

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Results

Conclusion