In addition to some natural clay minerals such as attapulgite and sepiolite, acid-activated calcium bentonites are commonly used as adsorbents in the decolourization process of …

Sunflower Oil Bleaching by Adsorption onto Acid-Activated Bentonite 1 71 Brazilian Journal of Chemical Engineering Vol. 28, No. 01, pp. 169 - 174, January - March, 2011 The residual Ca 2+, Na ...

The optimum Al(III) activation conditions for white bentonite (Ordu, Turkey), used as a bleaching agent for cottonseed oil, were investigated. AlCl 3 –clay suspension was hydrolyzed in situ using NaOH to investigate possible pillars. Five

Many studies have reported successful bleaching of oil using acid activated clays from across the world [5, 14, 15] but few have been carried out using local Kenyan clay [16]. …

The bleaching of palm oil using acid activated local bentonite clay, charcoal and periwinkle shell was studied. The raw oil was characterized to determine its properties .Chemical activation of the bleaching agent was done using Phosphoric acid (H3PO4) .the activated samples were used to adsorb color pigment from palm oil.

Kheok SC, Lim EE. 1982. Mechanism of palm oil bleaching by montmorillonite clay activated at various acid concentrations. J. Amer. Oil Chem. Soc. 59, 129–131. Kirali EG, Laçin O. 2006. Statistical modelling of acid activation on cotton oil bleaching by Turkish bentonite. J. Food Eng. 75, 137–141. Liew KY, Tan SH, Morsingh F, Khoo LE. 1982.

DOI: 10.1016/0377-8401(92)90108-I Corpus ID: 84694322; Evaluation of spent bleaching and filtering clay—a bentonite product from palm oil refining as a potential feed ingredient in layer diets

Bentonite Pacitan was modified with cetyl trimethylammonium bromide (CTAB) and LAS for bleaching crude palm oil. The organo-bentonites were prepared by normal heating and microwave irradiation.

Moreover, these results reveal that the removal of the carotenoids from the crude edible oil (451 nm, 479 nm) by the bleaching clay used in this study is easier than the removal of the chlorophyll ...

Previously, many studies have been done on degumming and bleaching process especially on the effect of clay type on color quality [8], [9], estimation on chemical dosage to degumming and bleaching ...

Civil Engineering Journal Vol. 4, No. 3, March, 2018 573 about 80 to 140 kg of filtered clay per ton of refined used oil is generated in this process. Taking into account the initial economic ...

The particle size distribution of the bentonite was not affected to any great extent by acid activation (Önal and Sarıkaya 2007b). Alkali-refined soybean oil (SO) and cottonseed oil (CSO) used for bleaching were acquired from a vegetable oil plant and used as received (Marsa, Istanbul, Turkey). Analytically pure H 2 SO

Bentonite Clay and Application of the Treated Clay in Palm Oil Bleaching Euphrosine Ujeneza, Helen N. Njenga*, Damaris N. Mbui, David N. Kariuki Department of Chemistry, University of Nairobi P.O. Box 30197-00100, Nairobi, Kenya Abstract: Athi River bentonite clay was activated using sulphuric acid at various acid concentrations, clay-

Request PDF | Performance of an Argentinian acid-activated bentonite in the bleaching of soybean oil | In this work, a bentonite clay from Mendoza, Argentina was activated with H2SO4 (4 and 8 N ...

It is possible to observe a minimum difference in oil sample purified with modified clay (0.75 g) oil sample "in natura" oil sample purified with commercial clay (0.75 g) Fig. 5 Images of "in natura" and purified açaí oil oil sample purified with commercial clay (1.50 g) 338 C. G. Bastos Andrade et al. oil sample purified with ...

Biodiesel obtained by transesterification of vegetable oils and fats is an alternative for petro-diesel fuel. Purification of biodiesel is one of the crucial steps in the production of biodiesel. The conventional wet washing of biodiesel involves huge quantities of water, energy, and time. Therefore, dry washing was carried out with raw bentonite …

Kheok SC, Lim EE. 1982. Mechanism of palm oil bleaching by montmorillonite clay activated at various acid concentrations. J. Amer. Oil Chem. Soc. 59, 129–131. Kirali EG, Laçin O. 2006. Statistical modelling …

The acidity of the activated bentonite surface and the increased surface area contributes to the bleaching activity in the refining process. The refining removes a …

Natural and active clays are usually used as bleaching agents for edible vegetable oils [3], [4], and clay activation is usually done with inorganic acids such as H2SO4 [5], [6] and HCl [7], [8 ...

Among these steps bleaching is the very important and critical step because it ensures the good color and odor of vegetable oil. The famous method of bleaching in Pakistan is …

Request PDF | On Jan 1, 2014, Euphrosine Ujeneza and others published Optimization of Acid Activation Conditions for Athi River Bentonite Clay and Application of the Treated Clay in Palm Oil ...

DOI: 10.1016/J.CLAY.2013.08.017 Corpus ID: 95093480; Acid-activation assisted by microwave of a Brazilian bentonite and its activity in the bleaching of soybean oil @article{Foletto2013AcidactivationAB, title={Acid-activation assisted by microwave of a Brazilian bentonite and its activity in the bleaching of soybean oil}, author={Edson Luiz …

Among these steps bleaching is the very important and critical step because it ensures the good color and odor of vegetable oil. The famous method of bleaching in …

The bentonite tonnage indicated in Fig 1 for oil refining is largely made up of the crude bentonite, which subsequently is acid-activated to produce activated bleaching clays.

Bleaching is the physical and chemical interaction of an oil or fat with bleaching earth to improve its quality. One definition of quality is "to reach a level of excellence." However, with respect to oil specifications, it is quite variable and depends on the product and market we are …

It is normally used as a building material. The aim of this study is to activate bentonite then to use it as a bleaching agent for edible oil. Sample of bentonite were obtained from Jabel Um Ali, North State of Sudan .X–ray fluorescence measurement was performed to determine the chemical composition of the raw clay.

Several reports disclosed the activation of bentonite clay via microwave-assisted irradiation have showed excellent performance as an oil bleach agent [26, 28] and photocatalyst [27]. However, as ...

Two bentonite clays with different mineralogical compositions from Mendoza, Argentine, were activated with H2SO4 solutions of 4 and 8 N at 90oC for 3.5 hours. This treatment affected clay structural properties, as was shown by thermogravimetry, infrared spectrometry and chemical analysis. Bleaching efficiency for sunflower oil was strongly …

Abstract and Figures The bleaching potential of Afashio kaolin (AFK), from Edo state in Nigeria, for removal of pigments from palm oil was investigated in comparison with that of local bentonite (BN).

TONSIL® grades are made from bentonite clay and consist of fine bleaching earth powders and granules with high adsorption capacity. Mined in a sustainable way, our natural products are developed to ensure high levels …