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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)157-164
Number of pages8
JournalStudia Universitatis Babes-Bolyai Chemia
Volume60
Issue number4
Publication statusPublished - Jan 1 2015

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Glycerol
Purification
Evaporation
Biofuels
Distillation
Byproducts
Soaps (detergents)
Molar mass
High performance liquid chromatography
Nonesterified Fatty Acids
Esters
Flow rate
Impurities
Water
Industry
Experiments
Temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

Trifoi, Ancuţa Roxana ; Crucean, Augustin ; Stănuleţ, Lucica ; Blăjan, Olimpiu ; Agachi, Paul Şerban. / Purification of crude glycerol by short path evaporation. Theoretical and practical analysis of process parameters. In: Studia Universitatis Babes-Bolyai Chemia. 2015 ; Vol. 60, No. 4. pp. 157-164.
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Purification of crude glycerol by short path evaporation. Theoretical and practical analysis of process parameters. / Trifoi, Ancuţa Roxana; Crucean, Augustin; Stănuleţ, Lucica; Blăjan, Olimpiu; Agachi, Paul Şerban.

In: Studia Universitatis Babes-Bolyai Chemia, Vol. 60, No. 4, 01.01.2015, p. 157-164.

Research output: Contribution to journalArticle

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