Journal articles: 'Oil extraction; Recovery'

1

Ahmed, Reem, Chandra Mohan Sinnathambi, and Usama Eldmerdash. "N-Hexane, Methyl Ethyl Ketone and Chloroform Solvents for Oil Recovery from Refinery Waste." Applied Mechanics and Materials 699 (November 2014): 666–71. http://dx.doi.org/10.4028/www.scientific.net/amm.699.666.

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Considerable amount of oily waste is generated from petroleum refinery in Malaysia. A typical refinery produces about 40 tons of sludge per month. Disposing via land filling (common method) is becoming less accepted and more expensive. As a result, refineries and other facilities have accumulated large volumes of this waste in makeshift landfills or other storage areas. For this reason solvent extraction method has been selected for oil recovery and to minimize the solid waste. Three solvents (chloroform, MEK, and n-hexane) and two extraction methods (sludge–solvent mixing method , and Soxhlet apparatus) were applied to recover the oil from the refinery sludge. Soxhlet extraction method has shown higher efficiency in extraction than sludge-solvent mixing method. Soxhlet extraction method using MEK solvent can recover about 48.3 % of oil, as compared to mixing method which accounts to only about 32.5 % of recovered oil. It has an added recovery of about 7.1 %, 15.8 % and 5.7 % for n-hexane, MEK and chloroform solvents respectively. FTIR results confirmed that MEK has the highest capability to extract hydrocarbon from refinery waste.

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Merchan-Arenas, Diego R., and Cindy Carolina Villabona-Delgado. "Chemical-Enhanced Oil Recovery Using N,N-Dimethylcyclohexylamine on a Colombian Crude Oil." International Journal of Chemical Engineering 2019 (May 2, 2019): 1–10. http://dx.doi.org/10.1155/2019/5241419.

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Oil recovery was improved using the tertiary amine, N,N-dimethylcyclohexylamine (DMCHA), a powerful and promissory switchable solvent, in simulated conditions similar to the Colombian crude oil reserves. Firstly, the Colombian crude oil (CCO) and the soil were characterized completely. Afterwards, an aged crude-rock system was obtained to use DMCHA that gave an oil crude extraction of 80% in our preliminary studies. Thus, a sand-pack column (soil-kaolin, 95 : 5) frame saturated with CCO was used to simulate the conditions, in which DMCHA could recover the oil. After the secondary recovery process, 15.4–33.8% of original oil in place (OOIP) is obtained. Following the injection of DMCHA, the recovery yield rose to 87–97% of OOIP. Finally, 54–60% of DMCHA was recovered and reinjected without affecting its potential in the simulated conditions.

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Tagle, Fabian R. "Automatic virgin coconut oil (VCO) extractor." MATEC Web of Conferences 192 (2018): 01045. http://dx.doi.org/10.1051/matecconf/201819201045.

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Virgin coconut oil (VCO) is a vegetable oil extracted from coconut milk that undergone either of the following extraction method: natural fermentation method with heat or without heat, expelling method or centrifugation method. Research showed that the extraction of VCO using expelling method had the highest percent oil recovery with 88.35% and yield of 30-31% followed by centrifugation method with oil recovery of 86.62% and yield of 31% then natural fermentation method with 65.95% oil recovery and yield of 16.5-19%. Even with low percent oil recovery and yield, VCO producers here in the Philippines particularly in Quezon province still employs the natural fermentation among other extraction method of VCO due to its cost-effectivity. The natural fermentation method involves several manual scooping activities in removing the VCO from the other component of the coconut milk which also takes time of waiting for about 24 to 48 hours for the VCO to be fractioned from the coconut milk mixture. This research therefore, focused in improving the natural fermentation method by developing a machine that automatically extracts the VCO from the coconut milk with higher percent oil recovery and yield. The designed machine was evaluated based on its oil recovery, and yield with respect to the current method of extraction. Furthermore, the effects of temperature and maturity of coconut kernel to the machine’s capability of extracting the VCO were carried out. The tests conducted showed that the Automatic Virgin Coconut Oil (VCO) Extractor had an oil recovery of 89.84%. The study also showed that the yield using the automatic extractor is 31.27%. It was also concluded that it is better to use the Automatic Virgin Coconut Extractor in the area with temperature of 35-37 °C and preferably good coconut kernel should be used for the extraction of VCO.

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Siregar, A. N., J. A. Ghani, C. H. C. Haron, M. Rizal, Z. Yaakob, and S. K. Kamarudin. "Comparison of oil press for jatropha oil – a review." Research in Agricultural Engineering 61, No. 1 (June 2, 2016): 1–13. http://dx.doi.org/10.17221/22/2013-rae.

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As petrol will soon be exhausted in the near future, Jatropha is going to be one of the substitute candidates for future biodiesel production. Countries of South-East Asia, such as Malaysia, they are going to start the establishment of Jatropha plantations assuming that Jatropha will be the main resource for biodiesel production. A press is commonly used to extract oils from Jatropha. An oil press can be manually driven or engine-powered. In this paper, we will review some available advances focused on mechanical extraction techniques, covering three types of press for Jatropha oil extraction. We have found that major points like operating principles, oil extraction levels, advantages and disadvantages of each press and important factors to increase oil recovery. Based on the study, three types of press are: ram press, which is ineffective; strainer press, which is able to produce more oil than others and cylinder-hole press, which is the best due to its capacity in extracting oil from Jatropha seeds for about 89.4% of oil yields.

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Gómez-Cruz, Irene, Cristóbal Cara, María del Mar Contreras, and Inmaculada Romero. "Recovery of Bioactive Compounds from Exhausted Olive Pomace." Proceedings 83, no. 1 (November 30, 2020): 9. http://dx.doi.org/10.3390/iecbm2020-08582.

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Exhausted olive pomace (EOP) is a residue derived from the olive pomace oil industry. One of the main components of this agro-industrial residue is the extractive fraction which contains non-structural components such as bioactive compounds. In this work, different extraction methods, including green technologies, have been compared to evaluate the extraction of antioxidants from EOP: hydrothermal extraction, aqueous accelerated extraction, organosolv extraction, and extraction with aqueous salt solutions. The extracts obtained were characterized regarding the content of total phenols by the Folin–Ciocalteu method. After characterization, hydroxytyrosol was found to be one of the potential active compounds in EOP.

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Wejnerowska, Grażyna, and Anna Ciaciuch. "Optimisation of oil extraction from quinoa seeds with supercritical carbon dioxide with co-solvents." Czech Journal of Food Sciences 36, No. 1 (February 28, 2018): 81–87. http://dx.doi.org/10.17221/122/2017-cjfs.

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In the present work supercritical fluid extraction with carbon dioxide was performed to obtain oil from quinoa seeds. The effects of extraction variables – namely pressure, temperature, time, particle size, and co-solvent, on supercritical carbon dioxide extraction are investigated. Total extraction yields and compositions using pure CO<sub>2</sub> and CO<sub>2</sub> + selected co-solvents are compared. The maximum recovery for quinoa oil is found to be about 89%, and is obtained when extractions are carried out at 25 MPa, 40°C for 80 minutes. A significant effect on the oil recovery is exerted by size reduction of seeds to a particle size ≤ 0.50 mm and addition of co-solvent to seed in an amount of 20% – methanol/ethanol (1 : 1, w/w). Irrespective of the extraction method and conditions, the fatty acid composition is not substantially changed.

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Fan, Jing Cun, Feng Chao Wang, Jie Chen, Yin Bo Zhu, De Tang Lu, He Liu, and Heng An Wu. "Molecular mechanism of viscoelastic polymer enhanced oil recovery in nanopores." Royal Society Open Science 5, no. 6 (June 2018): 180076. http://dx.doi.org/10.1098/rsos.180076.

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Polymer flooding is a promising chemical enhanced oil recovery (EOR) method, which realizes more efficient extraction in porous formations characterized with nanoscale porosity and complicated interfaces. Understanding the molecular mechanism of viscoelastic polymer EOR in nanopores is of great significance for the advancement of oil exploitation. Using molecular dynamics simulations, we investigated the detailed process of a viscoelastic polymer displacing oil at the atomic scale. We found that the interactions between polymer chains and oil provide an additional pulling effect on extracting the residual oil trapped in dead-end nanopores, which plays a key role in increasing the oil displacement efficiency. Our results also demonstrate that the oil displacement ability of polymer can be reinforced with the increasing chain length and viscoelasticity. In particular, a polymer with longer chain length exhibits stronger elastic property, which enhances the foregoing pulling effect. These findings can help to enrich our understanding on the molecular mechanism of polymer enhanced oil recovery and provide guidance for oil extraction engineering.

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ROSA, M. S. L., I. B. C. L. SILVA, N. T. M. ARAUJO, F. C. FIGUEIREDO, and J. R. SANTOS JUNIOR. "TREATMENT OF LUBRICATING OIL USED WITH THE USE OF SOLVENTS AND ADSORBENT MATERIALS." Periódico Tchê Química 15, no. 30 (August 20, 2018): 127–38. http://dx.doi.org/10.52571/ptq.v15.n30.2018.130_periodico30_pgs_127_138.pdf.

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The development of human activities in the industrial and transportat sectors has increased the contamination of water bodies by the release of used and contaminated lubricating oils used and contaminated (OLUC). To contain such contaminations, the process of re-refining the OLUC has been used worldwide to recover the base oil. Based on the literature, this process using the extraction and adsorption steps is effective, low cost, making the product able to enter the production chain again. So, this review highlights the recovery process of the base oil, from the extraction with solvent and adsorbent materials and the characterizations of the new oil, OLUC and oil recovered by Fourier Transform Infrared Spectroscopy (FTIR) and thermal analysis.

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John W. Goodrum and Mary B. Kilgo. "Rapeseed Oil Recovery by CO2 Solvent: Recovery Kinetics and Extraction Model." Transactions of the ASAE 32, no. 2 (1989): 0727–31. http://dx.doi.org/10.13031/2013.31061.

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10

Taiwo, E. A., and J. A. Otolorin. "Oil Recovery from Petroleum Sludge by Solvent Extraction." Petroleum Science and Technology 27, no. 8 (June 19, 2009): 836–44. http://dx.doi.org/10.1080/10916460802455582.

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11

Phan Tai, Huan, and Gerd Brunner. "Extraction of Oil and Minor Compounds from Oil Palm Fruit with Supercritical Carbon Dioxide." Processes 7, no. 2 (February 18, 2019): 107. http://dx.doi.org/10.3390/pr7020107.

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A significant quantity of tocochromanols and carotenoids remains in the residual from palm oil production by traditional screw pressing. Supercritical carbon dioxide extraction was used as alternative method with the purpose to recover better these valuable minor compounds. Total oil yield and co-extracted water were investigated in the course of extraction. Tocochromanols and carotenoids were evaluated, not only in the extraction oil, but also in the oil of residual fibre. Modelling of extraction process was also performed for a further up-scaling. The results showed that oil yield up to 90% could be observed within 120 min. Supercritical carbon dioxide (SCCO2) could extract tocochromanols and carotenoids with concentration in the same range of normal commercial processing palm oil, while co-extracted water remained rather low at a level of 2–4%. Moreover, recovery efficiencies of these minor compounds were much higher in case of extraction processed with supercritical carbon dioxide than those with screw pressing method.

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12

Bustillo Maury, Johnnys, Andrés Aldana Rico, Cindy García Pinto, Ingrid Hernández Medina, Juan Urueta Urueta, Jerry W. King, and Antonio Bula Silvera. "Oil Recovery from Palm Kernel Meal Using Subcritical Water Extraction in a Stirred Tank Reactor." Processes 7, no. 11 (November 2, 2019): 797. http://dx.doi.org/10.3390/pr7110797.

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Palm kernel meal (PKM) is one of the main byproducts of the oil palm industry. PKM can be obtained as the result of solvent or mechanical extraction of palm kernel oil; in both cases, meal has a remaining oil content that could be recovered. In this work, PKM coming from a mechanical pressing extraction system with an initial oil content between 7 to 8% (wt.) was treated with subcritical water in a batch stirred reactor. To find the proper operational conditions, a three-step experimental process was performed. Extraction temperature, reaction time, particle size and alkaline catalyst usage were selected as process factors. After subcritical extraction, the system was cooled down and depressurized; then oil phase was separated by centrifugation. After extraction, meal was oven-dried at 80 °C. A maximum recovery of 0.034 kg-oil/kg-meal was obtained at 423 K, 720 s and particles smaller than 0.001 m. The experimental procedure showed consistent extraction yields of 40% without modifying the quality of the obtained oil.

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13

Jusoh, Norela, Norasikin Othman, Gabriella Geeta, Muhammad Bukhari Rosly, Raja Norimie Raja Sulaiman, Norul Fatiha Mohamed Noah, and Khairul Sozana Nor Kamarudin. "Emulsion liquid membrane extraction of polyphenols compound from palm oil mill effluent." Malaysian Journal of Fundamental and Applied Sciences 16, no. 1 (February 2, 2020): 96–101. http://dx.doi.org/10.11113/mjfas.v16n1.1443.

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Polyphenols possess many health attributes, as they are powerful antioxidants. Recovery of value-added compounds from industrial waste is a new approach in order to promote sustainability. In this study, the extraction of polyphenols from palm oil mill sterilization condensate by emulsion liquid membrane (ELM) process is proposed. The sterilization condensate was first characterized to determine the total phenolic content (TPC) in the sample. For the extraction, liquid membrane was formulated to choose the best diluent, carrier, and stripping agent. Once the formulation was successfully attempted, the extraction of polyphenols to recover polyphenols was performed. The results show that 2627.3 mg GAE/L of TPC was obtained in the condensate. During the liquid membrane formulation, palm oil was chosen as a green diluent, TBP and n-Octanol were selected as the most appropriate carriers for synergize in a composition of 8:2 by volume, while sodium hydroxide was selected as the most appropriate stripping agents to best facilitate the extraction process. The extraction and recovery performance of polyphenols showed performance of 96.5% and 31%, respectively. The findings of this study show that ELM is a potential technology to extract and recover polyphenols from palm oil mill sterilization condensate.

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Urvantsev, R. V., and S. E. Cheban. "ASSESSMENT OF OIL WELL PRODUCTIVITY IN LOW-PERMEABILITY RESERVOIRS IN THE FIELDS OF EASTERN SIBERIA." Oil and Gas Studies, no. 3 (July 1, 2017): 30–36. http://dx.doi.org/10.31660/0445-0108-2017-3-30-36.

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The 21st century witnessed the development of the oil extraction industry in Russia due to the intensifica- tion of its production at the existing traditional fields of Western Siberia, the Volga region and other oil-extracting regions, and due discovering new oil and gas provinces. At that time the path to the development of fields in Eastern Siberia was already paved. The large-scale discoveries of a number of fields made here in the 70s-80s of the 20th century are only being developed now. The process of development itself is rather slow in view of a number of reasons. Create a problem of high cost value of oil extraction in the region. One of the major tasks is obtaining the maximum oil recovery factor while reducing the development costs. The carbonate layer lying within the Katangsky suite is low-permeability, and its inventories are categorised as hard to recover. Now, the object is at a stage of trial development,which foregrounds researches on selecting the effective methods of oil extraction.

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15

Suhardiyono, Y.B. Che Man, B.A. Asbi, and M.N. Azudin. "THREE IMPROVED METHODS FOR COCONUT OIL EXTRACTION." CORD 9, no. 01 (June 1, 1993): 34. http://dx.doi.org/10.37833/cord.v9i01.268.

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Three methods for coconut oil extration using acetic acid, baker's yeast, and mixed enzymes were investigated. Coconut milk was allowed to settle for two hours; for cream separation. When the cream reacted with 25 % acetic acid at 0.l % ‑ 0.4 % levels or baker's yeast at 0.5 ‑ 2 g levels for 10 ‑ 14 hours, the oil was separated into two phases; the upper phase containing coconut oil‑rich fraction and the lower phase consisting of water. The oil phase was finally boiled for 20 minutes to remove moisture. The other extraction method was based on the combined action of cellulase, a ‑amylase, protease, and poly‑galacturonase at 0.1 % to 1 % on grated coconut meat at pH 4 to 8, 400C to 600C for 30 minutes. Oil recovely, moisture content, FFA, peroxide value, saponification value, anisidine value, iodine value and colour of the oil were studied. Up to 60 % recovery of high quality oil was obtained by acetic acid or baker's yeast treatment whilst that of mixed enzymes treatment was 73 %. These three alternatives wet processing showed significant improvement as compared to the traditional process.

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Manyele, S. V., and I. F. Kahemel. "Investigation of the Effect of Particle Size on Groundnut-Oil Solvent Extraction." Tanzania Journal of Engineering and Technology 31, no. 2 (December 31, 2008): 1–13. http://dx.doi.org/10.52339/tjet.v31i2.425.

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An investigation of the effect of particle size on the performance of vegetable oil recovery by solvent extraction is reported. Experiments were conducted using soxhlet extractor, groundnuts and n-hexane. Samples were grouped into mean particle sizes of 0.25, 0.75, 1.3, 3.3, and 7.5 mm using standard sieves. The effect of particle size was studied for extraction time intervals of 1, 2, 3, 4, 5 and 8 hours. The oil yield, oil recovered per kg solvent used, kg solvent lost per unit time, and the rate of extraction (kg oil recovered per hour) decreased with increasing particle size. Meanwhile, the percent of solvent recovered, the ratio of oilrecovered to the total volatile matter driven off and the kg solvent lost per kg oil recovered, increased with increasing particle size. Based on the normalization of averaged extraction-parameters, a mean particle size of 3.3 mm was observed to be the optimum size.

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Taiwo, Elijah A., and John A. Otolorin. "Solvent Blend Performance in Hydrocarbon Recovery from Nigerian Tank Bottom Sludge." International Journal of Engineering and Technologies 9 (December 2016): 20–28. http://dx.doi.org/10.18052/www.scipress.com/ijet.9.20.

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Oil sludge waste associated with crude oil production generally consists of oil, sands and untreatable emulsions segregated from the production stream, and sediment accumulated on the bottom of crude oil and water storage tanks. The use of single solvent and combination (solvent blend) was evaluated for extraction of hydrocarbon content (oil) of the Tank Bottom Sludge (TBS) associated with the crude oil production with a view to optimizing hydrocarbon recovery from the sludge. TBS samples were contacted with selected solvents blends of varying volumetric ratios, each at a time. The blend generated from xylene, hexane, cyclohexane and petroleum ether representing aliphatic and aromatic interactive combination with varying polarity. Their effects on the oil recovery from tank bottom sludge were determined, with solubility parameter as a factor. The optimum oil recovery by blendA,BandCat room temperature of 29°C, from sample 1 are respectively 54.48% (3:2), 60.33% (2:3) and 61.10% (1:1); from Sample 2, were respectively 66.25% (2:3), 60.80 (3:2) and 63.35 (1:1) at room temperature of 29°C . At room temperature BlendChas the highest performance in extracting oil from sample 1. The highest performance in recovery of oil from sample 2 was observed with blendA(66.25 %.). Solvent extraction process is very effective in recovering hydrocarbons oil from TBS. The use of solvents mixture greatly improved oil recovery from TBS and varies with blend composition and the operating temperature condition.

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Li, Tan, Zhu Ming, Ye Shen, Gang Lv, and Xin Sun. "Effects of Solvents and Extraction Methods to Extraction of Fructus Leonuri." Advanced Materials Research 790 (September 2013): 539–41. http://dx.doi.org/10.4028/www.scientific.net/amr.790.539.

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Effects of solvent types and extraction methods were investigated for effective recovery of fatty oils from Fructus Leonuri fruit . Among the five solvents tested, dichloromethane gave the highest recovery with Soxhlet extract ion (SE) , and ethanol gave the highest recovery with microwave assisted extraction (MAE) . In addition, the fatty oil content of the MAE extract was found to be only slightly lower than that of SE, but MAE was shown to permit comparable extract ion efficiency with 30 fold reduction in extraction time and 2 fold reduction in solvent consumption.

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Carpenter, Chris. "Slurrified Heavy-Oil-Reservoir Extraction as a Recovery Method." Journal of Petroleum Technology 66, no. 03 (March 1, 2014): 129–31. http://dx.doi.org/10.2118/0314-0129-jpt.

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Hruschka, Steffen. "Valuable oil recovery: process improves extraction and lowers costs." Filtration & Separation 43, no. 1 (January 2006): 38–39. http://dx.doi.org/10.1016/s0015-1882(06)70766-2.

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Busto, Mariana, and Carlos Román Vera. "Deacidification of vegetable oil by extraction with solvent recovery." Adsorption 25, no. 7 (May 9, 2019): 1397–407. http://dx.doi.org/10.1007/s10450-019-00102-9.

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Al Attar, Lina, Bassam Safia, Basem Abdul Ghani, and Jamal Al Abdulah. "Recovery of NORM from scales generated by oil extraction." Journal of Environmental Radioactivity 153 (March 2016): 149–55. http://dx.doi.org/10.1016/j.jenvrad.2015.12.014.

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Park, Ji-Yeon, Gye-An Lee, Keun-Yong Kim, Ki-Yong Kim, Sun-A. Choi, Min-Ji Jeong, and You-Kwan Oh. "Microalgal Oil Recovery by Solvent Extraction from Nannochloropsis oceanica." Korean Chemical Engineering Research 52, no. 1 (February 1, 2014): 88–91. http://dx.doi.org/10.9713/kcer.2014.52.1.88.

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Mofijur, M., F. Kusumo, I. M. Rizwanul Fattah, H. M. Mahmudul, M. G. Rasul, A. H. Shamsuddin, and T. M. I. Mahlia. "Resource Recovery from Waste Coffee Grounds Using Ultrasonic-Assisted Technology for Bioenergy Production." Energies 13, no. 7 (April 7, 2020): 1770. http://dx.doi.org/10.3390/en13071770.

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Biodiesel is a proven alternative fuel that can serve as a substitute for petroleum diesel due to its renewability, non-toxicity, sulphur-free nature and superior lubricity. Waste-based non-edible oils are studied as potential biodiesel feedstocks owing to the focus on the valorisation of waste products. Instead of being treated as municipal waste, waste coffee grounds (WCG) can be utilised for oil extraction, thereby recovering an energy source in the form of biodiesel. This study evaluates oil extraction from WCG using ultrasonic and Soxhlet techniques, followed by biodiesel conversion using an ultrasonic-assisted transesterification process. It was found that n-hexane was the most effective solvent for the oil extraction process and ultrasonic-assisted technology offers a 13.5% higher yield compared to the conventional Soxhlet extraction process. Solid-to-solvent ratio and extraction time of the oil extraction process from the dried waste coffee grounds (DWCG) after the brewing process was optimised using the response surface methodology (RSM). The results showed that predicted yield of 17.75 wt. % of coffee oil can be obtained using 1:30 w/v of the mass ratio of DWCG-ton-hexane and 34 min of extraction time when 32% amplitude was used. The model was verified by the experiment where 17.23 wt. % yield of coffee oil was achieved when the extraction process was carried out under optimal conditions. The infrared absorption spectrum analysis of WCG oil determined suitable functional groups for biodiesel conversion which was further treated using an ultrasonic-assisted transesterification process to successfully convert to biodiesel.

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Jokic, Stela, Tihomir Moslavac, Krunoslav Aladic, Mate Bilic, Djurdjica Ackar, and Drago Subaric. "Hazelnut oil production using pressing and supercritical CO2 extraction." Chemical Industry 70, no. 4 (2016): 359–66. http://dx.doi.org/10.2298/hemind150428043j.

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In the hazelnut oil production it is very important to find an appropriate method to recover the oil from kernels. The objective of this study was to evaluate the oil extraction process from hazelnuts by screw pressing followed by extraction with supercritical CO2. The effects of temperature head presses, frequency and nozzle size in pressing experiments on oil temperature and recovery were monitored. The optimal pressing condition using response surface methodology was determined. In obtained hazelnut oil the following quality parameters were determined: peroxide value 0 mmol O2/kg, free fatty acids 0.23%, insoluble impurities 0.42%, moisture content 0.045%, iodine value 91.55 g I2/100 g, saponification value 191.46 mg KOH/g and p-anisidine value 0.19. Rosemary extract was the most effective in protecting the oil from oxidative deterioration. The residual oil that remained in the cake after pressing was extracted totally with supercritical CO2 and such defatted cake, free of toxic solvents, can be used further in other processes.

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Romashev, Artyom, Dongsheng He, Tatiana Aleksandrova, and Nadezhda Nikolaeva. "Technological Typomorphic Associations in Caustobiolites and Methods of Their Extraction." Metals 11, no. 1 (January 9, 2021): 121. http://dx.doi.org/10.3390/met11010121.

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Heavy oil is considered as a multipurpose complex mineral, and the processing of heavy oils as a “complex problem”, aimed both at increasing the yield of light fractions and “transport” ability of oil, and at extracting metals from heavy asphaltene resinous fraction. The recovery of heavy metals (such as vanadium, nickel, titanium, iron, etc.) from heavy oil was performed by cavitation extraction technology with the use of light hydrocarbon solvents and chemical extractants, including a stage of extraction in an ultrasonic field with separation of insoluble fraction of asphaltenes in which a significant part of initial heavy metals and sulfur is concentrated, followed by re-extraction of metals and magnetic separation of metal aggregates.

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Romashev, Artyom, Dongsheng He, Tatiana Aleksandrova, and Nadezhda Nikolaeva. "Technological Typomorphic Associations in Caustobiolites and Methods of Their Extraction." Metals 11, no. 1 (January 9, 2021): 121. http://dx.doi.org/10.3390/met11010121.

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Heavy oil is considered as a multipurpose complex mineral, and the processing of heavy oils as a “complex problem”, aimed both at increasing the yield of light fractions and “transport” ability of oil, and at extracting metals from heavy asphaltene resinous fraction. The recovery of heavy metals (such as vanadium, nickel, titanium, iron, etc.) from heavy oil was performed by cavitation extraction technology with the use of light hydrocarbon solvents and chemical extractants, including a stage of extraction in an ultrasonic field with separation of insoluble fraction of asphaltenes in which a significant part of initial heavy metals and sulfur is concentrated, followed by re-extraction of metals and magnetic separation of metal aggregates.

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Gaaseidnes, Knut, and Joseph Turbeville. "Separation of Oil and Water in Oil Spill Recovery Operations." Pure and Applied Chemistry 71, no. 1 (January 1, 1999): 95–101. http://dx.doi.org/10.1351/pac199971010095.

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The separation of water from oil that is collected in any oil spill recovery operation is a continuing and necessary requirement during every stage of the effort. Its importance is reflected in the cost of transport and storage of large volumes of oily water, the salvage value of separated oil and the added labor costs associated with long-term recovery operations.This paper addresses the effects of weathering and emulsion generation which increase the problems normally associated with water extraction. Separation theory, practical separation technology and recommendations for the future direction of research and development are presented.

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Wang, Yan-zhen, Hai-long Xu, Li Gao, Meng-meng Yan, Hong-ling Duan, and Chun-min Song. "Regeneration of Spent Lubricant Refining Clays by Solvent Extraction." International Journal of Chemical Engineering 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/207095.

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Step-by-step solvent extraction was used to regenerate spent clay by recovering the adsorbed oil in lubricating oil refining clay. Several polar and nonpolar solvents were tested, and petroleum ether (90–120°C) and ethanol (95 v%) were selected as the nonpolar and polar solvents, respectively. The spent clay was first extracted using petroleum ether (90–120°C) to obtain ideal oil and then extracted with a mixed solvent of petroleum ether (90–120°C) and ethanol (95 v%) two or three times to obtain nonideal oil before being extracted with ethanol and water. Finally, the clay was dried at 130°C to obtain regenerated clay. The total oil recovery can be more than 99 wt% of the adsorbed oil. The recovered ideal oil can be used as lubricating base oil. Shorter storage times for spent clay produce better regeneration results. The regenerated clay can be reused to refine the lubricating base oils.

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Fornasero, M. L., R. N. Marenchino, and C. L. Pagliero. "Deacidification of Soybean Oil Combining Solvent Extraction and Membrane Technology." Advances in Materials Science and Engineering 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/646343.

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The aim of this work was to study the removal of free fatty acids (FFAs) from soybean oil, combining solvent extraction (liquid-liquid) for the separation of FFAs from the oil and membrane technology to recover the solvent through nanofiltration (NF). Degummed soybean oil containing 1.05 ± 0.10% w/w FFAs was deacidified by extraction with ethanol. Results obtained in the experiences of FFAs extraction from oil show that the optimal operating conditions are the following: 1.8 : 1 w : w ethanol/oil ratio, 30 minutes extraction time and high speed of agitation and 30 minutes repose time after extraction at ambient temperature. As a result of these operations two phases are obtained: deacidified oil phase and ethanol phase (containing the FFAs). The oil from the first extraction is subjected to a second extraction under the same conditions, reducing the FFA concentration in oil to 0.09%. Solvent recovery from the ethanol phase is performed using nanofiltration technology with a commercially available polymeric NF membrane (NF-99-HF, Alfa Laval). From the analysis of the results we can conclude that the optimal operating conditions are pressure of 20 bar and temperature of 35°C, allowing better separation performance: permeate flux of 28.3 L/m2·h and FFA retention of 70%.

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He, Lin, Xin Gang Li, Yong Liang Du, Guo Zhong Wu, Hong Li, and Hong Sui. "Parameters of Solvent Extraction for Bitumen Recovery from Oil Sands." Advanced Materials Research 347-353 (October 2011): 3728–31. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.3728.

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Solvent extraction was applied in the separation of oil sands and considered as a promising technology. Results in this study indicated that the factors such as the volume of solvent to mass of oil sand (v/m), solvent aromatic content (the amount of aromatic hydrocarbons in the solvent), and the polarity of the solvent significantly influenced the oil sands bitumen recovery. A value of v/m greater than 5 was proposed in the extraction. The bitumen recovery increased with the increase of the solvent aromatic content. In addition, an appropriate polarity of the solvent with the range from 1.5 to 3.0 was suggested in the solvent selection. Hence, results demonstrated that the solubility of the composite solvent of n-heptane and toluene was less than the sum of the single ones. This study provided useful guidance for the solvent selection in the subsequent works.

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QIN, H., J. MA, W. QING, H. LIU, M. CHI, J. BAI, and L. ZHANG. "SHALE OIL RECOVERY FROM OIL SHALE SLUDGE USING SOLVENT EXTRACTION AND SURFACTANT WASHING." Oil Shale 32, no. 3 (2015): 269. http://dx.doi.org/10.3176/oil.2015.3.06.

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Bonetti, A., S. Venturini, A. Ena, and C. Faraloni. "Innovative method for recovery and valorization of hydroxytyrosol from olive mill wastewaters." Water Science and Technology 74, no. 1 (April 12, 2016): 73–86. http://dx.doi.org/10.2166/wst.2016.181.

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The nutritional properties of olive oil can be attributed to its oleic acid and phenolic compounds content, acting as natural oxidants to prevent human diseases. In particular, hydroxytyrosol has an anti-inflammatory action similar to omega 3 fatty acids from fish oil. The olive oil production was conducted by two extraction procedures: first, a two-phase extraction giving extra-virgin olive oil and humid pomace, second, a three-phase working process of humid pomace, obtaining another minimum quantity of extra-virgin olive oil, ‘dry’ pomace devoid of polyphenols, and mill wastewaters rich in anti-oxidant compounds. The aim of this processing was to employ water to extract the highest concentration of polyphenols from humid pomace and convey them in oil mill wastewaters for extraction. Processed olives were 37,200 kg, pomace deprived of polyphenols was equal to 20,400 kg and processing was performed with 500 kg of olives per hour. This method offers advantages of using cheap equipment and technical simplicity.

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Hu, Guangji, Jianbing Li, Shuhui Huang, and Yubao Li. "Oil recovery from petroleum sludge through ultrasonic assisted solvent extraction." Journal of Environmental Science and Health, Part A 51, no. 11 (June 13, 2016): 921–29. http://dx.doi.org/10.1080/10934529.2016.1191308.

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Javed, Farhan, Syed Waqas Ahmad, Abdul Rehman, Shahzad Zafar, and Shahid Raza Malik. "Recovery of Rice Bran Oil Using Solid-Liquid Extraction Technique." Journal of Food Process Engineering 38, no. 4 (November 18, 2014): 357–62. http://dx.doi.org/10.1111/jfpe.12166.

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Hussain, Sajid, Amir Shafeeq, and Usamah Anjum. "Solid liquid extraction of rice bran oil using binary mixture of ethyl acetate and dichloromethane." Journal of the Serbian Chemical Society 83, no. 7-8 (2018): 911–21. http://dx.doi.org/10.2298/jsc170704023h.

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The aim of the study is to investigate the potentials of less hazardous, binary mixtures of ethyl acetate (EA) and dichloromethane (DCM) for rice bran oil recovery. Nine solvent mixtures are used with different volumetric ratios of EA/DCM ranging from 0.11 to 9. Solvent mixture with volumetric ratio of 4 (S8) has enabled the maximum oil recovery 88.04 %. The oil extraction yield is enhanced from 76.41 to 89.7 % by increasing the preheating temperature from 40 to 65?C. The other optimized parameters for enhanced oil recovery are: bran particle size <125 ?m (obtained with 120 mesh sieve), solvent to bran ratio of 5 mL/g, and stirring time of 15 min. The minimum stirring rate for preventing agglomeration in the mixture and optimized oil recovery is 80 rpm.

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Shah, Raj, and John Calderon. "Developments in green surfactants for enhanced oil recovery." INFORM International News on Fats, Oils, and Related Materials 32, no. 4 (April 1, 2021): 12–16. http://dx.doi.org/10.21748/inform.04.2021.12.

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Scientists are developing improved surfactants for enhanced oil extraction that have superior capabilities while being environmentally friendly and capable of strong operational tolerances to pH, salinity, and temperature.In laboratory tests, numerous green surfactants synthesized from vegetable oils and other plant-based materials matched or exceeded the capabilities of conventional synthetic surfactants. Plant-based zwitterionic surfactants are reported to have strong interfacial reduction values and operational tolerances

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Hoang, Chuyen V. "Effects of different extraction methods on the recovery yield of bixin from annatto seeds (Bixa orellana L.)." Journal of Agriculture and Development 18, no. 06 (December 27, 2019): 58–65. http://dx.doi.org/10.52997/jad.8.06.2019.

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Bixin is a principal color component of annatto pigment which is obtained from the seed coat of Bixa orellana L., a tropical shrub. The extraction yield of bixin from annatto seeds using acetone, soybean oil and sodium hydroxide solution with different extraction conditions were investigated in this study. The extraction time, temperature, solid-liquid ratio and light exposure showed significant effects on the bixin yield. The extraction using soybean oil had the lowest bixin yield followed by the extraction using sodium hydroxide solution. The extraction using acetone resulted in the highest extraction yield (68.1%) after only 40 min. The extraction using soybean oil at 100oC led to two-fold bixin yield compared to that operated at 80oC while the mild temperature (50oC) was found to be the most suitable for the extraction using sodium hydroxide solution. The exclusion of light exposure by covering extraction beakers with aluminum foil could significantly improve the bixin extraction yield due to the reduction in bixin degradation. Therefore, the extraction using acetone avoiding light exposure is suggested for recovering bixin from annatto seeds.

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Triana-Maldonado, D. M., S. A. Torijano-Gutiérrez, and C. Giraldo-Estrada. "Supercritical CO₂ extraction of oil and omega-3 concentrate from Sacha inchi (Plukenetia volubilis L.) from Antioquia, Colombia." Grasas y Aceites 68, no. 1 (March 1, 2017): 172. http://dx.doi.org/10.3989/gya.0786161.

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Sacha inchi (Plukenetia volubilis L.) seeds were employed for oil extraction with supercritical CO2 at laboratory scale. The supercritical extraction was carried out at a temperature of 60 °C, pressure range of 400–500 bars and CO2 flow of 40–80 g/min. The maximum recovery was 58% in 180 min, favored by increasing the residence time of CO2 in the extraction tank. Subsequently, the process was evaluated at pilot scale reaching a maximum recovery of 60% in 105 min, with a temperature of 60 °C, pressure of 450 bars and CO2 flow of 1270 g/min. The fatty acid composition of the oil was not affected for an extraction period of 30–120 min. The Sacha inchi oil was fractionated with supercritical CO2 to obtain an omega-3 concentrate oil without finding a considerable increase in the proportion of this compound, due to the narrow range in the carbon number of fatty acids present in the oil (16–18 carbons), making it difficult for selective separation.

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He, De Min, Fan Nie, Jun Guan, Hao Quan Hu, and Qiu Min Zhang. "Hot Water Extraction and Fixed Bed Pyrolysis for Bitumen Recovery of an Indonesian Oil Sand." Applied Mechanics and Materials 672-674 (October 2014): 624–27. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.624.

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An Indonesian oil sand were studied by hot water extraction and fixed bed pyrolysis for bitumen recovery. It was found that the concentration of alkali and temperature both had effects on the yield of water extraction. But the maximum yield was only 12.74wt% under the investigated condition due to its oil-wet structure. As to pyrolysis in fixed bed reactor, the influence of holding time, flow rate of gas carrier and temperature on the tar yield were considered. The maximum tar yield was 17.01wt% under 140mL/min of gas carrier, 480°C, 0.1MPa and holding for 40min. The results show that pyrolysis is more suitable for bitumen recovery of the oil sand compared with hot water extraction.

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Ntalikwa, Justin W. "Solvent Extraction of Jatropha Oil for Biodiesel Production: Effects of Solvent-to-Solid Ratio, Particle Size, Type of Solvent, Extraction Time, and Temperature on Oil Yield." Journal of Renewable Energy 2021 (July 28, 2021): 1–8. http://dx.doi.org/10.1155/2021/9221168.

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The aim of this study was to examine the effects of solvent-to-solid ratio, particle size, extraction time, and temperature on the extraction of Jatropha oil using three organic solvents, i.e., n-hexane, petroleum ether, and ethanol. The Soxhlet extraction method was used, and the parameters were varied in the following ranges: extraction temperature of 24–80°C, extraction time of 2 to 8 h, solvent-to-solid ratio of 4 : 1 to 7 : 1, and particle size of 0.5–0.8 mm. After obtaining optimal conditions, a large volume of Jatropha oil was prepared, purified, and subjected to analysis of quality parameters. It was found that the oil content of the Jatropha curcas L. seeds used was 48.2 ± 0.12% w/w. The highest oil yield of 47.5 ± 0.11% w/w corresponding to an oil recovery of 98.6 ± 0.3% w/w was obtained with n-hexane under the following conditions: solvent-to-solid ratio of 6 : 1, particle size of 0.5–0.8 mm, extraction time of 7 h, and extraction temperature of 68°C. This was followed by that of petroleum ether (46.2 ± 0.15% w/w) and lastly by ethanol (43 ± 0.18% w/w). The quality parameters of the oil extracted compared favorably well with most of the values reported in the literature, suggesting that the oil was of good quality for biodiesel production. Environmental and safety concerns over the use of hexane pose a great challenge. Thus, ethanol, which is environmentally benign, is recommended for application. The conditions for ethanol extraction that gave high oil yield were as follows: extraction temperature of 70°C, extraction time of 7 h, solvent-to-solid ratio of 6 : 1, particle size of 0.5–0.8 mm, and oil yield of 43 ± 0.18% w/w corresponding to an oil recovery of 89.2 ± 0.4% w/w.

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Ahmadi, M. A., T. Kashiwao, and A. Bahadori. "Prediction of Oil Production Rate Using Vapor-extraction Technique in Heavy Oil Recovery Operations." Petroleum Science and Technology 33, no. 20 (October 18, 2015): 1764–69. http://dx.doi.org/10.1080/10916466.2015.1098672.

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Östbring, Karolina, Emma Malmqvist, Kajsa Nilsson, Ia Rosenlind, and Marilyn Rayner. "The Effects of Oil Extraction Methods on Recovery Yield and Emulsifying Properties of Proteins from Rapeseed Meal and Press Cake." Foods 9, no. 1 (December 24, 2019): 19. http://dx.doi.org/10.3390/foods9010019.

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The agricultural sector is thought to be responsible for around 30% of the anthropogenic climate change and it is well established that high meat consumption has a tremendous impact on the environment. Rapeseed is mainly used for production of vegetable oil, but press cake has high protein content with the potential for incorporation into new plant protein-based foods. Protein was recovered from press cakes generated from different oil pressing processes. Industrially cold-pressed, hot-pressed, and solvent-extracted rapeseed press cake and the effect of heat treatment in the recovery process was assessed. Protein recovery yield, protein concentration and emulsifying properties were analyzed. Cold-pressed rapeseed press cake (RPC) recovered in the absence of heat, yielded the highest protein recovery (45%) followed by hot-pressed rapeseed meal (RM) (26%) and solvent-extracted RM (5%). Exposure to heat during recovery significantly reduced the yield for cold-pressed RPC but no difference was found for hot-pressed RM. The protein recovery yield was improved for solvent-extracted RM when heat was applied in the recovery process. The ability to stabilize emulsions was highest for protein recovered from cold-pressed RPC, followed by hot-pressed RM and solvent-extracted RM, and was in the same range as commercial emulsifying agents. Heat treatment during recovery significantly reduced the emulsifying properties for all pressing methods examined. This study suggests that cold-pressed rapeseed press cake without heat in the recovery process could be a successful strategy for an efficient recovery of rapeseed protein with good emulsifying properties.

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Ahmad, Syed W., Farhan Javed, Sajjad Ahmad, Muhammad Akram, and Abdur Rehman. "Parametric optimization of rice bran oil extraction using response surface methodology." Polish Journal of Chemical Technology 18, no. 3 (September 1, 2016): 103–9. http://dx.doi.org/10.1515/pjct-2016-0055.

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Abstract Use of bran oil in various edible and nonedible industries is very common. In this research work, efficient and optimized methodology for the recovery of rice bran oil has been investigated. The present statistical study includes parametric optimization, based on experimental results of rice bran oil extraction. In this study, three solvents, acetone, ethanol and solvent mixture (SM) [acetone: ethanol (1:1 v/v)] were employed in extraction investigations. Response surface methodology (RSM), an optimization technique, was exploited for this purpose. A five level central composite design (CCD) consisting four operating parameter, like temperature, stirring rate, solvent-bran ratio and contact time were examined to optimize rice bran oil extraction. Experimental results showed that oil recovery can be enhanced from 71% to 82% when temperature, solvent-bran ratio, stirring rate and contact time were kept at 55°C, 6:1, 180 rpm and 45 minutes, respectively while fixing the pH of the mixture at 7.1.

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Shamilov, V. M. "Potential applications of carbon nanomaterials in oil recovery." SOCAR Proceedings, no. 3 (September 30, 2020): 90–107. http://dx.doi.org/10.5510/ogp20200300450.

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Carbon nanomaterials and compositions containing them are attracting increased attention. The high variety of carbon nanomaterials structures and morphologies as well as the simplicity of its surface functionalization, make it possible to effectively select the nanomaterial properties for the target task. The presented study provides an overview of the oil industry stages and shows the main directions of using nanotechnology in them. The main attention is focused on the trends of carbon nanomaterials (nanodiamonds, carbon nanotubes and graphene-like materials) applications in the petroleum extraction stage (drilling and enhanced oil recovery processes).

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Han, D. Y., W. Q. Yu, K. Y. Luo, and Z. B. Cao. "Study on the process of oil recovery from oil sludge and tailing oil sands by blending extraction." Petroleum Science and Technology 37, no. 22 (June 24, 2019): 2269–74. http://dx.doi.org/10.1080/10916466.2019.1633347.

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Al-Marzouqi, Ali H., Abdulrazag Y. Zekri, Baboucarr Jobe, and Ali Dowaidar. "Supercritical fluid extraction for the determination of optimum oil recovery conditions." Journal of Petroleum Science and Engineering 55, no. 1-2 (January 2007): 37–47. http://dx.doi.org/10.1016/j.petrol.2006.04.011.

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Li, Xingang, Wenjun Sun, Guozhong Wu, Lin He, Hong Li, and Hong Sui. "Ionic Liquid Enhanced Solvent Extraction for Bitumen Recovery from Oil Sands." Energy & Fuels 25, no. 11 (November 17, 2011): 5224–31. http://dx.doi.org/10.1021/ef2010942.

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Tian, Yuan, William B. McGill, Todd W. Whitcombe, and Jianbing Li. "Ionic Liquid-Enhanced Solvent Extraction for Oil Recovery from Oily Sludge." Energy & Fuels 33, no. 4 (March 6, 2019): 3429–38. http://dx.doi.org/10.1021/acs.energyfuels.9b00224.

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Sterpu, Ancaelena-Eliza, Anca Iuliana Dumitru, and Mihai-Florinel Popa. "Regeneration of used engine lubricating oil by solvent extraction." Analele Universitatii "Ovidius" Constanta - Seria Chimie 23, no. 2 (December 1, 2012): 149–54. http://dx.doi.org/10.2478/v10310-012-0025-2.

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AbstractHuge amounts of used lubricating oils from automotive sources are disposed of as a harmful waste into the environment. For this reason, means to recover and reuse these wastes need to be found. Problems arising from acid treatment include environmental problems associated with the disposal of acid sludge and spent earth, low product yield (45-65%) and incomplete removal of metals. The processes of re-refining of used lubricating oils depend greatly on the nature of the oil base stock and on the nature and amount of contaminants in the lubricant resulting from operations. The study was carried out on a sample of 15W40 type used oil collected from one automobile. The re-refining process of used oil consists of dehydration, solvent extraction, solvent stripping and vacuum distillation. This study aims to investigate a process of solvent extraction of an alcohol-ketone mixture as a pre-treatment step followed by vacuum distillation at 5 mmHg. The primary step was conducted before the solvent extraction that involves dehydration to remove the water and fuel contaminants from the used oil by vacuum distillation. The solvent extraction and vacuum distillation steps were used to remove higher molecular weight contaminants. The investigated solvent to oil ratios were 2, 3, 4, 5 and 6. The solvent composition is 25% 2-propanol, 50% 1- butanol and 25% butanone or methyl ethyl ketone (MEK). The percentage of oil recovery for the solvent to oil ratio of 6:1 is further improved, but for the ratio values higher than 6:1, operation was considered economically not feasible. Finally, the re-refined oil properties were compared with the commercial virgin lubricating oil properties.

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Journal articles on the topic 'Oil extraction; Recovery'

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