scholarly journals DEMONSTRATION OF THE NEXT-GENERATION CAUSTIC-SIDE SOLVENT EXTRACTION SOLVENT WITH 2-CM CENTRIFUGAL CONTRACTORS USING TANK 49H WASTE AND WASTE SIMULANT

2011 ◽  
Author(s):  
R. Pierce ◽  
T. Peters ◽  
M. Crowder ◽  
T. Caldwell ◽  
D Pak ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Next Generation ◽  
Extraction Solvent

scholarly journals Density of Next-Generation Caustic-Side Solvent Extraction Solvent

2021 ◽  
Author(s):  
Bruce Moyer ◽  
Nathan Bessen
Keyword(s):  
Solvent Extraction ◽  
Next Generation ◽  
Extraction Solvent

scholarly journals DEMONSTRATION OF THE NEXT-GENERATION CAUSTIC-SIDE SOLVENT EXTRACTION SOLVENT WITH 2-CM CENTRIGUGAL CONTRACTORS USING TANK 49H WASTE AND WASTE SIMULANT

2011 ◽  
Author(s):  
R. Pierce ◽  
T. Peters ◽  
M. Crowder ◽  
D. Pak ◽  
S. Fink ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Next Generation ◽  
Extraction Solvent

scholarly journals The anthocyanin pigment extract from red rose as antibacterial agent

2018 ◽  
Vol 14 (1-2) ◽  
pp. 184-187
Author(s):  
Elfi Anis Saati ◽  
Annisa Dyah Pusparini ◽  
Mochammad Wachid ◽  
Sri Winarsih
Keyword(s):  
Escherichia Coli ◽  
Antioxidant Activity ◽  
Solvent Extraction ◽  
Shelf Life ◽  
Antibacterial Agent ◽  
Block Design ◽  
Pseudomonas Sp ◽  
Anthocyanin Pigment ◽  
Extraction Solvent ◽  
Pigment Extract

Red rose consisting of anthocyanin pigment has been used as an antibacterial agent. However, there is no study on the anthocyanin pigment extract from red rose as the antibacterial agent. The effectiveness of the antibacterial agent can be affected by the solvent extraction and the flower shelf life. Here, we report the effects of solvent extraction and red rose (Rosa sp.) shelf life on the antibacterial activity. Red rose concentrated extraction and randomized complete block design factorial was carefully used with factors of long display and solvent extraction. The extraction solvent (P) comprised of water, ethanol, and mixture of water-ethanol (1 : 1), while the red rose shelf life (M) consisted of 0, 2, 4 and 6 days. Moreover, pH, antioxidant activity and minimum bactericidal concentration (MBC) with four variations of concentrated concentration (100%, 50%, 25% and 12.5%) on Escherichia coli, Salmonella thypi, and Pseudomonas sp. were analyzed. After two days of shelf life using water as the solvent for extraction, the antioxidant activity achieved 79% at pH of 2.5. It was also demonstrated that it was able to kill all the investigated bacterias, which were Escherichia coli, Salmonella thypi, and Pseudomonas sp. with concentrated concentrations of 100%, 50% and 25%. When the concentrated concentration was 12.5%, the MBC value was constantly found to be 1.39 × 108 cfu/g for Escherichia coli and 9.53 × 107 cfu/g for Salmonella thypi.

scholarly journals Thermal and Spectroscopic Analyses of Caustic Side Solvent Extraction Solvent Contacted with 16 Molar and 8 Molar Nitric Acid

2008 ◽  
Vol 43 (9-10) ◽  
pp. 2826-2839 ◽  
Author(s):  
F. F. Fondeur ◽  
D. T. Hobbs ◽  
S. D. Fink
Keyword(s):  
Nitric Acid ◽  
Solvent Extraction ◽  
Extraction Solvent ◽  
Spectroscopic Analyses

scholarly journals Regeneration of used engine lubricating oil by solvent extraction

2012 ◽  
Vol 23 (2) ◽  
pp. 149-154
Author(s):  
Ancaelena-Eliza Sterpu ◽  
Anca Iuliana Dumitru ◽  
Mihai-Florinel Popa
Keyword(s):  
Solvent Extraction ◽  
Oil Recovery ◽  
Vacuum Distillation ◽  
Product Yield ◽  
Lubricating Oil ◽  
Lubricating Oils ◽  
Extraction Solvent ◽  
Used Oil ◽  
Incomplete Removal ◽  
Pre Treatment

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.

scholarly journals Next Generation Solvent Development for Caustic-Side Solvent Extraction of Cesium

2014 ◽  
Author(s):  
Bruce A. Moyer ◽  
Joseph F. Birdwell ◽  
Peter V. Bonnesen ◽  
Stephanie Bruffey
Keyword(s):  
Solvent Extraction ◽  
Next Generation

Deacification of High Acid-Containing Crude by Solvent Extraction under Ultrasonic Irradiation

2014 ◽  
Vol 521 ◽  
pp. 638-643
Author(s):  
Hong Guan Wu ◽  
Hai Feng Li ◽  
Guo Xian Yu
Keyword(s):  
Reaction Time ◽  
Solvent Extraction ◽  
Ethylene Glycol ◽  
Ultrasonic Irradiation ◽  
Weight Ratio ◽  
Acid Value ◽  
Naphthenic Acids ◽  
Extraction Solvent ◽  
Glycol Solution ◽  
Temperature Time

A compounded deacidificant was used for deacidification of domestic Bei-Jiang crude. In this work, its formulation was optimized in detail. Effect of reaction temperature, time and the ratio to crude oil was examined. Acceleration by using ultrasonic irritation in deacidification process was investigated. Our results revealed a deacificant composed of ethylene glycol as neutralization agent and cyclohexylamine as extraction solvent not only provided an excellent deacidificcation extent, but also no emulsion problem appeared. 30% cyclohexylamine-containing ethylene glycol solution has the best performance. Deacidification extent reached 85% and higher at a solvent and oil weight ratio of 15%.Ultrasonic wave played an accerleration role, resulting in a shorter reaction time. Naphthenic acids and solvent components were recovered by using vacuum distillation.The recovery rate for solvent components were 99.3% for ethylene and 96.6% for cyclohexylamine respectively. The purity of recovered naphthenic acids was rather high, reaching a acid value of 167.

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