Purification of crude glycerol by short path evaporation. Theoretical and practical analysis of process parameters

Ancuţa Roxana Trifoi; Augustin Crucean; Lucica Stănuleţ; Olimpiu Blăjan; Paul Şerban Agachi

Purification of crude glycerol by short path evaporation. Theoretical and practical analysis of process parameters

Ancuţa Roxana Trifoi, Augustin Crucean, Lucica Stănuleţ, Olimpiu Blăjan, Paul Şerban Agachi

Chemical, Materials & Metallurgical Engineering

Research output: Contribution to journal › Article

Abstract

Crude glycerol, the by-product from biodiesel production process, increased drastically as rapid growth of biodiesel industry. This by-product contains many impurities such as water, soaps, free fatty acids, esters etc. This paper presents a process development based on molecular distillation or short path evaporation, for glycerol purification up to 99%. Several experiments and theoretical analysis have been carried out to identify the effect of important parameters (mean free path, Knudsen number, evaporation rate, feed flow rate and evaporation temperature) which determine the performance of the molecular distillation process. The purified glycerol is collected in the distillate while the residue is enriched in higher molar mass components. High performance liquid chromatography (HPLC) was employed to determine the purity of glycerol.

Original language	English
Pages (from-to)	157-164
Number of pages	8
Journal	Studia Universitatis Babes-Bolyai Chemia
Volume	60
Issue number	4
Publication status	Published - Jan 1 2015

All Science Journal Classification (ASJC) codes

Chemistry(all)

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Trifoi, A. R., Crucean, A., Stănuleţ, L., Blăjan, O., & Agachi, P. Ş. (2015). Purification of crude glycerol by short path evaporation. Theoretical and practical analysis of process parameters. Studia Universitatis Babes-Bolyai Chemia, 60(4), 157-164.

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AU - Blăjan, Olimpiu

AU - Agachi, Paul Şerban

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