Selective adsorption of vitamin E from palm fatty acid distillate on silica-packed fixed-bed columns

Chu, Boon-Seang and Baharin, Badlishah Sham and Yaakob, Che Man and Quek, Siew-Young (2009) Selective adsorption of vitamin E from palm fatty acid distillate on silica-packed fixed-bed columns. International Journal of Food Engineering, 5 (5). pp. 1-15. ISSN 1556-3758

Full text not available from this repository.

Abstract

Understanding the behavior of vitamin E adsorption during chromatographic separation was useful for a better control of the process. In this study, a pre-concentrated vitamin E fraction from palm fatty acid distillate (PFAD) was subjected to a normal phase silica-packed fixed-bed column for further purification. The effect of various operational parameters i.e. column bed height, vitamin E inlet concentration, column temperature and flow rate on column performance were detailed. It appeared that the breakthrough curves of all systems showed a typical S-shaped profile. The service time of the column increased when increasing the column bed height, or reducing the inlet concentration, column temperature and flow rate. It was found that column efficiency in terms of adsorbent usage rate could be improved by decreasing the inlet concentration and flow rate. Decreasing the column temperature resulted in higher column capacity, suggesting that the adsorption of vitamin E on silica was an exothermic process. The Bed Depth Service Time (BDST) model described the adsorption process well, with coefficient of determination ranging from 0.92 to 0.99 and low residual sum of square (< 0.28) and standard error (< 0.35). The model could explain the characteristic operational parameters well except for the effect of flow rate in this study.

Item Type:Article
Keyword:Adsorption; Breakthrough curve; Fixed-bed column; Silica gel; Vitamin E.
Subject:Fatty acids.
Subject:Vitamin E.
Faculty or Institute:Faculty of Food Science and Technology
Publisher:Walter de Gruyter
DOI Number:10.2202/1556-3758.1656
ID Code:16652
Deposited By: Khairil Ridzuan Khahirullah
Deposited On:14 Nov 2012 08:31
Last Modified:14 Nov 2012 08:31

Repository Staff Only: item control page

Document Download Statistics

This item has been downloaded for since 14 Nov 2012 08:31.

View statistics for "Selective adsorption of vitamin E from palm fatty acid distillate on silica-packed fixed-bed columns "


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.