solvent efficiency for oil extraction from spent bleaching

Solvent efficiency for oil extraction from spent bleaching

Solvent efficiency for oil extraction from spent bleaching clay Article in Journal of the American Oil Chemists' Society 77(11):1219-1223 · November 2000 with 237 Reads How we measure 'reads'

Solvent efficiency for oil extraction from spent bleaching

Various alcohols and hydrocarbons were used as solvents to extract the residual oil in spent bleaching clay from palm oil refining. The content of oil and minor components in the spent clay was >40% by weight. The efficiencies of extraction by the polar alcohols, except for methanol, were higher but with a slower initial rate than the nonpolar hydrocarbons. The free fatty acids contents

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Solvent efficiency for oil extraction from spent bleaching

The content of oil and minor components in the spent cla Solvent efficiency for oil extraction from spent bleaching clay Lee 2000 Journal of the American Oil Chemists' Society Wiley Online Library

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Oil removal from spent bleaching clay by solvent extraction

In search of an efficient method for the revalorization of spent bleaching earth (SBE), a waste from vegetable oil refinery plant, three different solvent extraction strategies were adopted.

FAQ FOR SPENT BLEACHING EARTH OIL EXTRACTION

FAQ FOR SPENT BLEACHING EARTH OIL EXTRACTION 1. What is Spent Bleaching Earth? Spent Bleaching Earth is a solid waste material generated as a part of the refining process in the edible oil industry, worldwide. 2. What is the current application of Spent Bleaching Earth? Spent Bleaching Earth is usually disposed of in landfills or waste dumps. Due to increasing cost of disposal and being

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DEOILING EFFICIENCY FOR OIL EXTRACTION FROM SPENT

DEOILING EFFICIENCY FOR OIL EXTRACTION FROM SPENT BLEACHING CLAY AND THE QUALITY OF RECOvERED OIL Figure 1. Apparatus set-up for the laboratory bleaching process. Figure 2. Deoiling efficiency as a function of solid to solvent ratio. TABLE 1. COLOUR OF CRUDE PALM OIL (CPO) AND CRUDE PALM KERNEL OIL (CPKO) AFTER BLEACHING

Regeneration of Spent Lubricant Refining Clays by Solvent

Al-Zahrani designed extraction experiments on spent bleaching clay to recover oil using methyl ethyl ketone (MEK), acetone, petroleum ether, and hexane solvents at optimum conditions. Reactivation of the deoiled clays by calcination was investigated. The bleaching efficiency of the reactivated clays varied between 86 and 94% [10, 11]. Nebergall

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Recycling process of spent bleaching clay: Optimization by

Oil refining is an inevitable step in production of edible and industrial oil. Bleaching is the most important process among the refining processes. Bleaching adsorption is the most common method and clay is the most widely used adsorbent in this method. Disposal of bleaching clay, as a waste from re-refining plants, makes many environmental problems and economic losses.

Cited by: 3

Solvent efficiency for oil extraction from spent bleaching

Solvent efficiency for oil extraction from spent bleaching clay Solvent efficiency for oil extraction from spent bleaching clay Lee, C.; Seng, C.; Liew, K. 2000-11-13 00:00:00 Various alcohols and hydrocarbons were used as solvents to extract the residual oil in spent bleaching clay from palm oil refining. The content of oil and minor components in the spent clay was >40% by weight.

Oil removal from spent bleaching clay by solvent extraction

The effect of solvent type, solvent to clay ratio (SCR), time of extraction and extent of mixing on the percentage of oil extracted (POE) were investigated. The corresponding optimum conditions for the four solvents were: extraction time time = 5 minutes, solvent to clay ratio = 4 to 5, extraction temperature = 25 °C (room temperature) and mixing rate = 150 to 200 RPM. The bleaching

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Spent Bleaching Earth Recovery of Used Motor-Oil

This research utilized the spent bleaching earth (SBE) in used motor oil purification process via thermal remediation (650 ˚C) and acid washing methods (1 M HCl). Then, the activated spent bleaching earth (ASBE) was characterized. The results obtained from the BET analysis show the specific surface area and pore volume of the ASBE, activated virgin bleaching earth (AVBE) and virgin bleaching

Oil removal from spent bleaching clay by solvent

The effect of solvent type, solvent to clay ratio (SCR), time of extraction and extent of mixing on the percentage of oil extracted (POE) were investigated. The corresponding optimum conditions for the four solvents were: extraction time time = 5 minutes, solvent to clay ratio = 4 to 5, extraction temperature = 25 °C (room temperature) and mixing rate = 150 to 200 RPM. The bleaching

In-situ transesterification of residual vegetable oil in

At the optimum conditions, the efficiency of oil extracted from the SBC was 65.21%, while the conventional method of oil extraction from SBC showed a maximum extraction yield of 64.67% when ethanol was used as solvent (this can be seen in Table 2). In-situ transesterification not only improved the efficiency of oil extracted from SBC by 0.54%, but also unified the two steps of conventional

Optimization of Bleaching Process American Oil

The contact time between the oil and the bleaching earth refers to the total time that the bleaching clay is in contact with the oil going from the slurry tank through the filter press. Times typically range from 15 to 45 minutes, with 20 to 30 minutes being most common. In batch systems, contact time tends to be longer due to the sequential nature of the batch process. The positive effect of

Deoiling and Regeneration Efficiencies of Spent Bleaching Clay

The effect of various ratios of solid to solvent on the extraction of palm oil and palm kernel oil from SBC is investigated by employing the batch extraction method. A conventional modified Soxhlet extraction is used as a reference, in which 100% of the residual oil is extracted. Deoiling efficiency and regeneration efficiency of Deoiled Spent Bleaching Clay (DSBC) is determined. Deoiling

US6780321B2 Recovery of oil from spent bleached earth

The invention discloses a process to recover oil from spent bleaching earth recovered from vegetable oil refining process. The process involve three sub-processes comprising of reacting the spent bleaching earth with a solvent selected from a group consisting of toluene, acetone, xylene, isopropyl alcohol or n-hexane at a temperature between 35° C. to 50° C.; separating the solids and liquid

Recovery of oil and free fatty acids from spent bleaching

This work represents the extraction of oil with high free fatty acid content from spent bleaching earth using sub-critical water technology as a greener production pathway. The extraction efficiencies under different conditions were investigated. The studied parameters include temperatures in the range of 180 to 270˚C, the feed to solventfeed-to-solvent (in this case water) ratio (1:1, 1:2, 1

Supercritical carbon dioxide extraction of spent

A discrepancy was also apparent in the total oil mass balance, since combining the extracted and residual oil wt % for Runs 1, 2, 3, and 4 yielded 24.0, 26.5, 32.9, and 34.3 wt %, respectively.It was obvious that remixing the spent bleaching clay did not assure total extraction of all available oil. Determinationof the total oil content in the spent clay matrix via Soxhlet extraction is at

REGENERATION AND CHARACTERIZATION OF SPENT BLEACHING CLAY

polar solvent hexane was used as the solvent for the extraction process. Oil trapped in SBC was extracted using conventional Soxhlet extraction. A sample of about 10 g was placed into the thimble and covered by gauze at the top of the sample layer. Hexane solvent was placed in a round-bottomed flask. Extraction was carried out for 8 hr. The solvent was evaporated and separated by a rotary

Used bleaching earth evacuation in oil refining Quality

Refineries are part of extraction process and contains typically 18 to 25% oil in it, you can add this bleaching earth into the inlet system of solvent extraction process to extract out the oil which will benefit the oil yield (provided that output oil is getting FFA in specifications; plus the meal of this oil will get the required silica (you do not need to add more silica) but please make

Recycling process of spent bleaching clay: Optimization by

for 5 minutes. In a similar study, percentage of oil extraction for MEK was 72% at the best situation (Al-Zahrani and Daous, 2000). Using solvent extraction of clay in soybean oil bleaching industry, MEK was introduced as the best solution in this field (Foletto et al., 2002). Analyzing the extracted palm oil

A Study of Residual Oils Recovered from Spent Bleaching

Abstract: This study described the extraction of residual oils of spent bleaching earth (SBE) from palm oil refining industry, the properties and applications of residual oils obtained there from. Residual oils of SBE (acid-activated, WAC and neutral, NC) were recovered via solvent and supercritical-fluid (SC-CO 2) extraction. The yields of residual oils recovered from WAC were higher than

Deoiling efficiency for oil extraction from spent

Deoiling efficiency for oil extraction from spent bleaching clay and the quality of recovered oil. ABSTRACT The disposal and reuse of spent bleaching clay (SBC) from the palm oil processing industry is a problem of growing importance. Although today the only practical way of removing SBC is by disposal, extraction with organic solvents is a well-known method of deoiling contaminated SBC

Oil extraction Soybean Production Medicinal Plants

The quality of mechanically pressed and filtered oil is higher than that obtained from solvent extraction as less oil-soluble impurities (e.g. phosphatides) are removed, and is suitable for direct consumption. Efficiently pressed cake will retain 4-6% residual oil. Solvent-extracted meal has <1% residual oil. However, the main disadvantage of solvent extraction is high equipment cost, and

Solvent Efficiency for Oil Extraction from Spent Bleaching

Solvent Efficiency for Oil Extraction from Spent Bleaching Clay C.G. Lee, C.E. Seng, and K.Y. Liew* higher than the nonpolar solvents by about 7%. In general, the color of the polar solvent-extracted oils was darker than those extracted with nonpolar solvents. The increased quan- tity of polar components extracted using the polar solvents undoubtedly includes minor components present in the

Recovery of oil and free fatty acids from spent bleaching

the oil flavor and stability. Spent bleaching earth (SBE) usually contains between 17% and 28% by weight (wt) of oil with high content of free fatty acids, which is not removed during the final filter pressing process. Accor- dingly, it should be treated carefully prior to its disposal. Fire hazard due to spontaneous autoignition is the main concern with handling SBE from the bleaching of

RESIDUAL OIL FROM SPENT BLEACHING EARTH (SBE) FOR

Spent bleaching earth (SBE) is usually disposed of in landfi lls, normally, paid for by the refi nery. Due to the increasingly high cost of disposal, it is desir-able to use the material instead. The oil in SBE (Fig-ure 1) can be recovered via solvent or supercritical fl uid extraction (SC-CO 2) with a yield of up to 30% by weight of the SBE

Extraction of Spent Bleaching Earth in the Production of

The extraction of oils based on animal fat and vegetable oil from two types of spent bleaching earths, namely from the acidic sepiolite and the nonacidic palygorskite, was investigated by the Soxhlet method with hexane as a solvent. The yields of oil were independent of the feedstock, whereas a much lower oil yield was obtained with palygorskite exhibiting also a smaller surface area as

Solvent Extraction American Oil Chemists' Society

Put simply, the high oil content makes it difficult to adequately flake the oilseed and cook it for solvent extraction without oil coming free of the seed and fouling equipment. Furthermore, the 40% oil content would require much more than the optimum energy for removal of solvent from miscella in extraction. Therefore, the screw press technology is used before extraction to better prepare the

IN SITU BIODIESEL PRODUCTION FROM RESIDUAL OIL

(2005). Key Fuel Properties Of Palm Oil Alkyl Esters. (2000). Regeneration of A Spent Bleaching Earth And Its Reuse In The Refining Of An Edible Oil. (2007). Residual Oil from Spent Bleaching Earth for Biodiesel and Biolubricant Applications. MPOB Information Series. (2000). Solvent Efficiency for Oil Extraction from Spent Bleaching Clay. (1998

Solvent Extraction American Oil Chemists' Society

Put simply, the high oil content makes it difficult to adequately flake the oilseed and cook it for solvent extraction without oil coming free of the seed and fouling equipment. Furthermore, the 40% oil content would require much more than the optimum energy for removal of solvent from miscella in extraction. Therefore, the screw press technology is used before extraction to better prepare the

Deoiling efficiency for oil extraction from spent

The disposal and reuse of spent bleaching clay (SBC) from the palm oil processing industry is a problem of growing importance. Although today the only practical way of removing SBC is by disposal, extraction with organic solvents is a well-known method of deoiling contaminated SBC. Various hydrocarbon solvents are used as solvents to extract the residual oil in SBC.

Technological update on edible oil refining processes

on edible oil refining processes Vincent Fiers ‐ Desmet Ballestra Group OFI TECHNICAL/SCIENTIFIC CONFERENCE Tuesday 13th May 2014 Istanbul ‐ Turkey. Edible Oil Refining : Where are we now ? 2 Crude Oil Water degumming Alkali ANeutralisation Deod orization Refined Oil Soapstock Spent bleaching earth Deodorizer Distillate Mechanical Pressing OILSEEDS Oil Extraction Solvent Extraction WDG Oil

Spent Bleaching Earth Mecpro Heavy Engineering Limited

Serious fire and pollution hazards arising during stocking and disposal of spent earths also call for appropriate technical solutions for recovery of oil from spent earth. In view of these, Mecpro developed a method to extract the oil from spent bleaching earth economically and safely. The first continuous plant in the world with a non-flammable solvent was established for Wilmar, Indonesia

Seng Chye Eng USM

Lee C.G., Seng C.E. and Liew K.Y. (2000) Solvent efficiency for oil extraction from spent bleaching clay. J. Am. Oil Chem. Soc. 77(11), 1219-1222. 2. Seng C.E., Lee C.G. and Liew K.Y. (2001) Adsorption of Cr (VI) and Ni (II) ions on acid and heat activated deoiled spent bleaching clay. J. Am. Oil Chem. Soc. 78(8), 831-835. 3. Lim P.E., Ong S.A. and Seng C.E. (2002). Simultaneous adsorption and

Desmet Ballestra Continuous Sparbleach bleaching

The originality of Sparbleach ® is that the adsorption of coloring matters by the bleaching earth is enhanced by means of sparge steam resulting in a significant saving in bleaching earth.. The Sparbleach ® is a two stage vessel. Oil/earth mixure is introduced under vacuum into the top stage where it is heated and continuously agitated by injected sparge steam.

Extraction of spent bleaching materials, Journal of the

Extraction of spent bleaching materials Sieck, Herbert 1937-12-01 00:00:00 Large amounts of oils and fats are recoverable from spent bleaching materials. On account of the extreme fineness of the bleaching materials special equipment is required. A solvent extraction process, plant and equipment are described with operating costs and results given.

EXTRACTION AND REFINING

and solvent extraction, the process can be applied to a wide range of feedstocks, without modifying the internals of the extractor. The Lurgi extractor has superior processing efficiency in oil extraction from all forms of flakes, expanded shape, cakes, leaving least possible oil residue. The drive sprocket and chain are designed with C45 material and operate at low speed with hydraulic pack

Spent Bleaching Earth, Activated Bleaching Earth,

Spent Bleaching Earth is By-Product from Edible oil Refineries which is used for production of spent earth oil which is used for soap industries,biodiesel etc. we can supply Palm,Sun flower,Ground Nut,Cotton Seed,Rice Bran ,spent bleaching Earth in bulk quantity in truck with Oil Percentage varying from 15-25% at Competitive Price.

Cleaning Spent Bleaching Clay through Using Solvent

Under the best laboratory conditions and using RSM, the highest extraction efficiency was 5.97 ml/g for the ketone solvents (acetone and methyl ethyl ketone) at the extraction time of 3 minutes and 6 seconds, and 5.92 ml/g for hexane at the extraction time of 24 minutes and 30 seconds. Key words: Cleaning, Spent Bleaching Clay, Solvent Extraction, Response Surface Methodology (RSM), Oil



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