Proceedings of the International Conference of CELSciTech 2019 - Science and Technology track (ICCELST-ST 2019)

Effect of Flouride Acid Activation of Natural Bentonite on Bleaching of Palm Oil

Authors
Sri Hilma Siregar, Wirdati Irma, Fitra Perdana, Jusnita, Olif Syahbella
Corresponding Author
Sri Hilma Siregar
Available Online December 2019.
DOI
https://doi.org/10.2991/iccelst-st-19.2019.17How to use a DOI?
Keywords
bleaching, palm oil, bentonite, acid activation, flouride
Abstract
A natural bentonite from Indonesia was activated with 1 % of fluoride acid. In characterizing the activated and raw clay samples, XRD, BET and infrared spectroscopy were utilized. Bleached oil was analysed to find out peroxide value content, the percentage of colour reduction (%CR), acid value as well as the percentage of free fatty acid (%FFA) content before and after bleaching. Bleaching efficiency was calculated from measurement of absorbance of UV light by frying oil before and after treatment with activated clay. The BET results obtained exhibited the values of surface area and pore volumes were 26.893 m2/g and 0.067 cc/g respectively for the natural bentonite, after the activation with 1 % of HF acid these values changed to 43.167m2/g and 0.108cc/g, respectively. The optimum bleaching condition of clay dosage and contact time of bleaching were 2 gram and 120 minutes resulted in %FFA was 0.27%, acid value was 0.537, peroxide value was 9.57meq/kg, oil retention was 54.48% and 80% of luminance of colour reduction. Our results show that activated bentonite can be used to reduce the concentration of peroxide value, the darkness colour of frying oil to reduce, and free fatty acid adsorption or reduction in acid value efficiencies increase with higher adsorbent dosages
Open Access
This is an open access article distributed under the CC BY-NC license.

Download article (PDF)

Proceedings
International Conference of CELSciTech 2019 - Science and Technology track (ICCELST-ST 2019)
Publication Date
December 2019
ISBN
978-94-6252-852-9
DOI
https://doi.org/10.2991/iccelst-st-19.2019.17How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Sri Hilma Siregar
AU  - Wirdati Irma
AU  - Fitra Perdana
AU  - Jusnita
AU  - Olif Syahbella
PY  - 2019/12
DA  - 2019/12
TI  - Effect of Flouride Acid Activation of Natural  Bentonite on Bleaching of Palm Oil
BT  - International Conference of CELSciTech 2019 - Science and Technology track (ICCELST-ST 2019)
PB  - Atlantis Press
UR  - https://doi.org/10.2991/iccelst-st-19.2019.17
DO  - https://doi.org/10.2991/iccelst-st-19.2019.17
ID  - Siregar2019/12
ER  -