Aug 01, 2020 The search for inexpensive and environmentally friendly alternatives for used motor oil (UMO) purification has become a topic of research. In this study, the use of bentonite clay modified by acid activation is proposed. Sulfuric acid, acetic acid (v-acid/w-clay ratio20, 40 and 60%) and sulfuric/acetic mixtures (11 ratio) were used in the bentonite clay activation.
Jan 01, 2009 In this regard, attempts were made to optimize the acid activation of an Algerian bentonite using a factorial 3 3 experiment design in order to improve the effectiveness, expressed in terms of bleaching capacity in the colza oil processing. For this purpose, the effects at 80 C of three key parameters were investigated, namely the effects of the acid concentration in aqueous solution, the
Acid activation is a chemical treatment traditionally used on clays, typically bentonites in hydrochloric or sulphuric acid, to obtain partly dissolved materials with enhanced surface properties ...
Abstract The design of various experiments in order to assess and simulate the effects of the acid activation of an Algerian bentonite bentonite Subject Category Chemicals and Chemical Groups see more details on the bleaching capacity of Colza oil is described. Three key parameters of the acidic activation, namely acid concentration, contact time and temperature, were considered.
inorganic acid (Sulfuric acid and hydrochloric acid) activated bentonite clay is very efficient and shows satisfactory results. But there is a major disadvantage associated with its use.
Aug 13, 2017 Acid activation (3 N) of M1 at different activation times (2, 4, and 6 h) and at different temperatures (25, 50, 75, and 90 C) is able to change the physicochemical properties by increasing their surface areas. At four hours of activation, it is possible to give clays whose surfaces were the highest (between 368 and 659 m 2 /g).
of pigmented vegetable oils. Key Words Acid activation, Kaolinite, Oil bleaching, Freundlich isotherm, Bentonite. INTRODUCTION Bentonite and kaolinite are econmic minerals with wide variety of industrial applications 1. In Jordan bentonites is mainly used in casting metal foundries, in the drilling of wells and as bleaching clay for oils and fats.
ASTE lubricant oils are generated from vehicles and machineries. This waste lubricating oil has higher ... for the finishing process of lubricating oil is the acid activated bentonite clay, but the mechanism of their action on the ... kernel powder was used without acid activation and with 15 % (wt) sulfuric acid activation. The egg shale was ...
activation occurred when (10%) acid was used in clay mixture. 2 /g and 0.1309( ) m. 3 /g respectively for the crude bentonite, after the activation with (10%) acid these values changed to (200 m. 2 /g ) and (0.5056 m. 3 /g respectively. On the other ha) nd maximum surface area (350) m. 2 /g was obtained by using (70%) acid activation.
Jun 13, 2019 Effect of acid agent composition on waste oil recovery and MB adsorption. The effect of activation agent composition of bentonite on waste lubricant oil recovery is represented in Fig. 1b in which the microwave power was controlled at the level of 600 W for 15 min. The enhancement of acetic acid proportion from 0 to 0.5 causes the recovery ratio to decrease as a result, the color of oil ...
colored oil before and after treatment with activated clay. This results obtained exhibited the values of surface area and pore volume were 59.9) m (C. The result revealed that optimum acid activation occurred when (10%) acid was used in clay mixture. 2 /g and 0.1309( ) m. 3 /g respectively for
Keywords Acid activation, Bentonite clay, Oil bleaching, Adsorption isotherm I. Introduction The term bentonite was first used to designate a particular highly colloidal, plastic clay found near Fort Benton in the Cretaceous beds of Wyoming, USA 1. Later the term was attributed to every plastic clay
3) Total acid Total acid of the oil after purification can be seen in fig 3. Fig 3 The graph of relationship between bentonite activation and bentonite application and total acid. The graph 3 showed acid amount of patchouli oil is lower before purification and all the treatments are fulfilled SNI 06-2385-2006.
concentration of acid used in the activation process. Palm oil was used to investigate the bleaching performance of the activated clay samples. When the oil was bleached at 90 C for 30 minutes using 4% clay activated with 2 mol/L H 2 SO 4, the bleaching performance increased up to 98%.
Oct 01, 2013 The activation of bentonite clay for the use as oil decolorizing agent is conventionally carried out by a batch system with agitation in the boiling temperature of the acid solution, at atmospheric pressure (Foletto et al., 2006, Foletto et al., 2011, Rossi et al., 2003, Wu et al., 2006).
microwave activation as a cheap adsorbent holds great potential to remove oil-soluble green pigment in the wastewater treatment process. Keywords activated bentonite, acid activation, microwave heating, oil-soluble green pigment, adsorption Introduction As it is known, vegetable oils contain many kinds of pigments, including chlorophylls,
Feb 06, 2007 Acid-activated bentonite was used as a bleaching agent to remove the dark color in repeatingly used palm oil. Two bentonite samples with different colors were used. It was found that the paler one gave better bleaching results. The optimum condition needed 5 h to reflux bentonite with sulfuric acid pH of the bentonite suspension was 3, bleaching temperature was 8085C and
Mar 12, 2018 2.2. Activation of Bentonite by Hydrochloric Acid. The hydrochloric acid (HCl) (98%, g/cm 3) and other chemicals used are of analytical grade. The purified bentonite was prepared for acid activation 15 g 0.01 g of the purified sample was weighed into a
Aug 05, 2010 In this work, a bentonite clay from Turkey (Somas bentonite) was activated with different concentrations of H2SO4 and HCl at 7090C and 58 h. Under these conditions several cations were removed from natural bentonite (Al, Mg, and Fe) and DTA-TGA and FT-IR curves of the solids obtained after acid treatment were examined. Treatment time and acid concentration increased the degree of ...
parameters used to bleach the alkali refined soybean oil. Keywords acid activation, bentonite, bleaching, porosity, soybean oil . 2 *Corresponding author Dr. Merref nal Department of Chemistry Faculty of Science, Ankara University 06100 Ankara, TURKEY
Jul 01, 2006 The aim of the study was to determine the highest bleaching capacity and derive a model for acid activation of a Turkish bentonite using a full factorial design. The selected factors were contact time, solid to liquid ratio, acid concentration and moisture of bentonite. A first-order model is obtained by using 2(4) full factorial design.
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Currently, substantial amount of activated bentonite used by vegetable oil industries are imported. In this research, the bentonite was obtained locally from the region of Leuwiliang (Bogor, West Java). The bentonite was purified using solution of sodium-hexa-meta-phosphate (NaPO 3) 6, and was activated using acid reflux methods (H 2 SO 4 ...
Bleaching of vegetable oil using organic acid activated fullers earth (Bentonite Clay) Atif Khan . ... alternative method for activation procedure of bentonite clay and this method should be the safest method for both the labor and equipment used in vegetable oil industry. So safety is the major motivation for this research.
The particle size distribution of the bentonite was not affected to any great extent by acid activation (nal and Sarkaya 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
The design of various experiments in order to assess and simulate the effects of the acid activation of an Algerian bentonite on the bleaching capacity of Colza oil is described. Three key parameters of the acidic activation, namely acid concentration, contact time and temperature, were considered.
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...
Jul 10, 2015 Treatment with inorganic acid (Sulfuric acid and hydrochloric acid) activated bentonite clay is very efficient and shows satisfactory results. But there is a major disadvantage associated with its use. Fumes of hydrochloric acid or sulfuric acid are very dangerous for both the equipment and labor involved in manufacturing of vegetable oil.
Meanwhile, acid activation of montmorilonite using 4MHCl for 4 h. causing reduction in intensity and broading of the d001. Fig. 1 X-ray diffraction pattern of Ca-montmorillonite Oil treated with unactivated Bent. TABLE I UNITS FOR MAGNETIC PROPERTIES Oil Specimens Symbol Codes Used Oil A B Oil treated with acid activated Bent. C Oil treated ...
Mar 01, 2021 Purification and activation of the Iraqi bentonite for edible oil Production. Hameed R D Alamery 1 and Saad A Ahmed 2. Published under licence by IOP Publishing Ltd IOP Conference Series Materials Science and Engineering, Volume 1090, 1st International Conference on Engineering Science and Technology (ICEST 2020) 23rd-24th December 2020, Samawah, Iraq Citation Hameed R D
bentonite. Then 500 g of degummed oil were filtered. New bentonite was used for every oil sample no further studies on the saturation capacity of the filter were performed. The density, the flash point and the color of the filtered oils were then measured and compared with
The raw bentonite has a CEC of 0.6497 meqg 1 and allows to be characterized as typical sodium bentonite. In order to bleach cottonseed oil, optimum conditions for sulfuric acid activation of the raw bentonites were investigated, which were obtained by selecting various acid strength, at 9698C and activating for 4h with 12 solid ...
Mar 01, 2012 The greater the concentration of the acid used, the greater the bleaching performance of the clay. The effect of acid activation on oil retention increased markedly by 18%, from 34% to 52% for raw and 3 M HCl activated clay, respectively.
Dec 19, 2017 Acid activation of upper Eocene Ca-bentonite for soybean oil clarification. Chakroun S, Herchi M, Mechti W, Gaied ME. Environ Sci Pollut Res Int, 24(28)22557-22569, 13 Aug 2017 Cited by 0 articles PMID 28804805
Mary McMahon Activated clay can be used to help clean up oil spills. Activated clay is clay, usually of bentonite origin, which has been treated to improve its ability to adsorb. The clay is processed with acid, upping the adsorption properties of the clay considerably. Once it has been treated, activated clay can also be reactivated as it is used, allowing people to reuse the clay rather than ...
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