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Response surface methodology applied to optimization of distilled monoglycerides production
Author(s) -
Fregolente Leonardo Vasconcelos,
Batistella César Benedito,
Filho Rubens Maciel,
Maciel Maria Regina Wolf
Publication year - 2005
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-005-1127-9
Subject(s) - distilled water , response surface methodology , distillation , chromatography , evaporator , volumetric flow rate , glycerol , chemistry , vacuum distillation , materials science , analytical chemistry (journal) , thermodynamics , organic chemistry , physics , heat exchanger
This work demonstrates that response surface methodology (RSM) is a powerful tool for the optimization of the production of distilled MG. Experiments with a centrifugal molecular distillator having an evaporation area of 0.0046 m 2 were carried out using RMS to identify operating conditions that can lead to higher MG purity. The independent variables studied were the evaporator temperature (TEV) and the volumetric feed flow rate (Q). The experimental range was from 100 to 300°C for TEV and between 5 and 15 mL/min for Q. High‐performance size exclusion chromatography was used to evaluate TG, DG, MG, FFA, and glycerol (GL) compositions. Results were presented as MG concentration surfaces. Starting from a material with 10.8% of TG, 37.7% of DG, 43.6% of MG, and 7.2% of GL, the maximum MG, purity in the distillate stream with just one distillation step was 82.6% at a TEV equal to 250°C and Q equal to 5 mL/min. At these conditions, the MG recovery was 61%. A strategy was developed to obtain distilled MG with 96.3% purity.