Search Results

1 - 10 of 100 items :

  • "solvent extraction" x
Clear All
Solvent Extraction of Metal Ions from Sulfate Solutions Obtained in Leaching of Spent Ni-MH Batteries

Acid Leaching, Solvent Extraction and Precipitation. Hydrometallurgy 133, pp. 37-43. Gega, J., Gajda, B., Walkowiak, W. (2001). Separation of Co(II) and Ni(II) ions by Supported and Hybrid Liquid Membranes, Separation and Purification Technology, 22-23, pp. 551-558. Innocenzi, V., Ippolito, N.M., De Michelis, I., Prisciandaro, M. (2017). A Review Of The Processes and Lab-Scale Techniques For The Treatment Of Spent Rechargeable NimhBatteries. Journal of Power Sources, 362, pp. 202-218. Jha, M.K.; Kumari A.; Pand, R.; Kumar, J.R.; Yoo, K.; Lee, J

Open access
Regeneration of used engine lubricating oil by solvent extraction

Abstract

Huge 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.

Open access
A calculation model for liquid-liquid extraction of protactinium by 2,6-dimethyl-4-heptanol

. International Atomic Energy Agency. (2007). Use of reprocessed uranium. In Technical Committee Meeting. Vienna, Austria: IAEA. (IAEA-TECDOC-CD-1630). 4. Simpson, M. F., & Law, J. D. (2010). Nuclear fuel reprocessing. Idaho Falls, Idaho: Idaho National Laboratory. (INL/EXT-10-17753). 5. Kirby, H. W. (1959). The radiochemistry of protactinium. National Academy of Sciences National Research Council. (Nuclear Series, NAS-NS 3016). 6. Rydberg, J., Musikas, C., Choppin, G. R., & Cox, M. (2004). Solvent extraction principles, and

Open access
SACSESS – the EURATOM FP7 project on actinide separation from spent nuclear fuels

. Part. Nucl. Phys., 66, 144-166. 3. SACSESS report summary, http://cordis.europa.eu/result/rcn/158019_en.html. 4. Modolo, G., Wilden, A., Geist, A., Magnusson, D., & Malmbeck, R. (2012). A review of the demonstration of innovative solvent extraction processes for the recovery of trivalent minor actinides from PUREX raffinate. Radiochim. Acta, 100, 715-725. DOI: 10.1524/ract.2012.1962. 5. Wilden, A., Modolo, G., Schreinemachers, C., Sadowski, F., Lange, S., Sypula, M., Magnusson, D., Geist, A., Lewis, F. W., Harwood, L. M

Open access
Determination of formation constants of uranyl(VI) complexes with a hydrophilic SO3-Ph-BTP ligand, using liquid-liquid extraction

., Kaden, P., Modolo, G., Wilden, A., & Zevaco, T. (2012). Actinide( III)/lanthanide(III) separation via selective aqueous complexation of actinide(III) using a hydrophilic 2,6-bis(1,2,4-triazin-3-yl)pyridine in nitric acid. Solvent Extr. Ion Exch., 30, 433-444. 8. Modolo, G., Wilden, A., Geist, A., Magnusson, D., & Malmbeck, R. (2012). A review of the demonstration of innovative solvent extraction processes for the recovery of minor actinides from PUREX raffinate. Radiochim. Acta, 100, 715-725. 9. Ansari, S. A., Pathak, P., Mohapatra, P

Open access
Development of the Chalmers Grouped Actinide Extraction Process

References 1. Madic, C., Testard, F., Hudson, M., Liljenzin, J. -O., Christiansen, B., Ferrando, M., Facchini, A., Geist, A., Modolo, G., Gonzalez-Espartero, A., & De Mendoza, J. (2004). PARTNEW New solvent extraction processes for minor actinides. Final report. CEA. (Report CEA-R-6066). 2. Aoki, S. (2002). Research and development in Japan on long-lived nuclide partitioning and transmutation technology. Prog. Nucl. Energy, 40, 343-348. 3. Salvatores, M., Slessarev, I., Ritter, G., Fougeras, P., Tchistiakov, A

Open access
Extraction of rubidium and cesium from brine solutions using a room temperature ionic liquid system containing 18-crown-6

LITERATURE CITED 1. Arnold, W.D., Crouse, D.J., & Brown, K.B. (1965). Solvent extraction of cesium (and rubidium) from ore liquors with substituted phenols. Industrial & Engineering Chemistry Process Design and Development 4(3), 249–254. DOI: 10.1021/i260015a002. 2. McDowell, W.J., Case, G.N., McDonough, J.A., & Bartsch, R.A. (1992). Selective extraction of cesium from acidic nitrate solutions with didodecylnaphthalenesulfonic acid synergized with bis (tert-butylbenzo)-21-crown-7. Anal. Chem . 64(23), 3013–3017. DOI: 10.1021/ac00047a024. 3

Open access
Quaternary phosphonium salts as effective extractants of zinc(II) and iron(III) ions from acidic pickling solutions

-liquid extraction. J. Hazard. Mater. , 150(3), 669-678. DOI: 10.1016/j.hazmat.2007.05.019. El Dessouky, S. I., El-Nadi Y. A., Ahmed, I. M., Saad, E. A. & Daoud, J. A. (2008). Solvent extraction of Zn(II), Fe(II), Fe(III) and Cd(II) using tributylophosphate and CYANEX 921 in kerosene from chloride medium. Chem. Eng. Process. , 47(2), 177-183. DOI: 10.1016/j.cep.2007.03.002. Visser, A. E., Swatlowski, R. P., Griffin, S. T., Hartman, R. D. & Rogers, D. H. (2001). Liquid/liquid extraction of metal ions in room temperature ionic

Open access
Processes and Technologies for the Recycling of Spent Fluorescent Lamps

.08.004. 18. Naitou, M., Yoshikawa, M. & Narita, K. (1987). U.S. Patent No. 4650652. Process for recovering highly pure rare earth oxides from a waste rare earth phosphor. 19. Bou-Maroun, E., Chebib, H., Leroy, M.J.F. & Boos, A. (2006). Solvent extraction of lanthanum(III), europium(III) and lutetium(III) by bis(4-acyl-5-hydroxypyrazoles) derivatives. Sep. Purif. Technol. 50, 220-228. DOI: 10.1016/j.seppur.2005.11.029. 20. Sun, X., Wang, J., Li, D. & Li, H. (2006). Synergistic extraction of rare earths by mixture of bis(2,4,4-trimethylpentyl

Open access
Selective recovery of cobalt(II) towards lithium(I) from chloride media by transport across polymer inclusion membrane with triisooctylamine

manufacturing of lithium ion batteries. J. Power Sources 167, 536-544. DOI: 10.1016/j.powsour.2007.02.046. 12. Suzuki, T., Nakamura, T., Inoue, Y., Niinae, M. & Shibata, J. (2012). A hydrometallurgical process for the separation of aluminum, cobalt, copper and lithium in acidic sulfate media. Sep. Purif. Technol. 98, 396-401. DOI: org/10.1016/j. seppur.2012.06.034. 13. Swain, B., Jeong, J., Lee, J. & Lee, G. (2007). Extraction of Co(II) by supported liquid membrane and solvent extraction using Cyanex 272 as an extractant: A comparison study. J

Open access