A new approach to managing the extraction properties of eutectic solvents based on aliphatic alcohols is proposed. Aliphatic alcohols, when functioning as hydrogen bond donors within a eutectic ...
In addition, total phenolics and total flavonoids content with different solvents were found in the range of 11.08 to 196.76 mg GAE/g and 12.92 to 110.3 mg QE/g of extract respectively. Moreover, antioxidant capacities expressed in terms of IC50 (mg/mL) showed that methanol extract exhibited higher antioxidant capacity followed by ethanol extract.
Solvent Extraction and Ion Exchange. ISSN 0736-6299 (Print); ISSN 1532-2262 (Online)
Digital platform connecting chemistry and insight to make copper solvent extraction more efficient. Today, ore composition is not a constant, resulting in frequent variation in pregnant leach solution (PLS) grade and acidity. Such changes require adjustments in plant flows and operating conditions to maintain production targets.
The methanol-chloroform ratio, at which maximum extraction occurred (1:3, by vol), was further used to study the efficiency of lipid extraction by simultaneous and sequential treatment of the solvents; phospholipids and cholesterol were extracted better when the tissue was treated first with methanol and subsequently, with chloroform.
Recovery of Nickel and Cobalt Metal Powders from the Leaching Solution of Spent Lithium-Ion Battery by Solvent Extraction and Chemical Reduction pp. 415-425(11) Authors: Wen; Lee. Add to favourites Favourites: ADD. A Comprehensive Review on Cobalt Bioleaching from Primary and Tailings Sources
In particular, the evolution of solid-phase extraction towards miniaturized techniques is closely related to the introduction of nanomaterials as new sorbents. Microextraction techniques, both solid-based and liquid-based, allow for the reduction of solvent and sample volumes, as well as the sample processing times.
Solvent Extraction ABSTRACT Solvent extraction is a method used to separate and purify compounds. In the case of the this experiment the compound that will be extracted is dibenzyl acetone. The extraction technique heavily depends on a compounds solubility to separate the organic phase from the aqueous phase of a mixture.
Solvent extraction. Solvent extraction is one of the separation methods in which one component or solute present in one phase is extracted into another phase by using a suitable solvent. Thus, the process by which a solute is transformed from one phase to a new phase is known as extraction.
INTRODUCTION An extraction is a technique used for the separation and purification of organic compounds. In the extraction process water insoluble organic compounds can be extracted from an aqueous solution into an …
Solvent extraction is an effective method for extracting elements, such as Co, Ni, and Cu, from the pregnant solution. D2EHPA, Tributylphosphate (TBP), Cyanex 272, Cyanex 301 and LIX …
This tutorial review describes the coordination chemistry of commercial solvent extraction processes that are used to achieve the separation and concentration of the metals of value in …
The extraction was conducted by using supercritical carbon dioxide (SC-CO 2) with 50% ethanol-water as a co-solvent at selected operating conditions (200 bar, 60 °C, 10% co-solvent content and 3 ml/min solvent total flow rate).
The ultrasound centrifugation extraction and accelerated solvent extraction were compared, and the accelerated solvent extraction conditions, namely the proportion of the extraction solvent, the extraction temperature, extraction time and extraction times, were optimized. The operating conditions of LC-AFS and the mobile phase were optimized.
The irregular distribution of lithium mineral resources in countries and the unequal concentration in brine reserves also causes lithium extraction to be of critical importance. Today lithium is mainly recovered from minerals (especially spodumene) by acid, alkaline, and chlorination processes, and from brines by crystallization, solvent ...
Methods: The oil extraction was done in Soxhelt apparatus using petroleum ether as a solvent. Then, the oil extracts were assessed based on the determination of oil yield, acid value, percent free fatty acid, peroxide value, and free radical scavenging activity using 2, 2-diphenyl-1-picrylhydrazyl (DPPH) and hydrogen peroxide, and ascorbic acid.
Nano-pores play an important role in the pores system of shale matrix, and the size of pore throat restricts the flow of shale oil. This paper discusses the characteristics of pore structure, effective reservoir space and the lower limit of oil migration by using field emission scanning electron microscopy (FE-SEM) imaging, solvent extraction and small angle X-ray …
A new approach to managing the extraction properties of eutectic solvents based on aliphatic alcohols is proposed. Aliphatic alcohols, when functioning as hydrogen bond donors within a eutectic solvent, significantly …
Based on the change of the volume percentage of the mesopores before and after the solvent extraction, the oil content in the mesopores is revealed. The relative content of fine mesopores (2–10 nm) increases significantly after extraction, indicating as the effective shale oil storage space, the fine mesopores contain the high wax crude oil ...
Materials and Methods: Maceration, Hydro distillation, microwave-assisted extraction (MAE), and Soxhlet were performed. The best technique was identified according to yield and content. Further studies were conducted to examine the effects of different factors, such as solvent types (ethanol and methanol) and sample-to-solvent ratio (1:10 and 1 ...
The optimum conditions were as follows: at room temperature, using AB-8 macroporous resin, the concentration of crude polyphenol extract was 0.80 mg/mL at pH=6.5, with the 1 mL/min flow and the adsorption injection of 200 mL, and the eluting solvent was 70% ethanol with the flow rate of 1.5 mL/min and the volume of 70 mL.
Furthermore, an extensive overview of the extraction solvents, intensification technologies and mechanisms of lutein extraction by using deep eutectic solvents are systematically presented and critically compared. Finally, the current challenges and future prospects of microalgae lutein extraction are critically discussed.
They are used for example as lubricants, plasticizers, solvents and catalysts for synthesis, matrices for mass spectroscopy, solvents for extraction and in the manufacture of nano-materials, and as electrolytes. There are numerous studies in the corresponding literature concerning the unique properties, preparation methods, and different ...
Applications of solvent extraction. Solvent extraction is used in the production of fragrances, vegetable oils, biodiesel, etc. Using this process, radioactive plutonium from nuclear fuel can be recovered and utilized as nuclear fuel. It is employed in the separation of hazardous pollutants from sludge and sediments.
Execution of methodology is simple, products obtained in high yields and the reactions are completed within 30 min. The new methodology does not involve any solvent/solvent extraction while solid products were yielded in all cases which were filtered and washed.
This paper highlights various general methods for extracting piperine from the crude drug such as maceration extraction, hydrotropic extraction, accelerated solvent extraction, thin-layer chromatography, and extraction with ethanol & dichloromethane Ionic fluid-based ultrasonic-assisted extraction, etc. In this review, piperine and its analogs ...
The results show that the optimum extraction conditions of the pilot plant extraction process of 1-deoxynojirimycin were extraction temperature of 79.2 °C, extraction time of 1.46 h (87.6 min) and the ratio of sample to solvent of 1:9.82. Under these optimum conditions, the extraction yield was found to be 31.62 mg/g.
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SolvExtract ® is a first-of-its-kind digital platform that connects chemistry and operational insight to make solvent extraction more efficient. The digital platform brings Syensqo's technical expertise to customers at an unprecedented speed …
Different solvents, including aqueous, DMSO, and Benzene were used to conduct the phytochemical investigation. It made secondary metabolites obvious to be present. ... Aqueous leaves extract and NPs have 41% and 45% of scavenging activity and DMSO of both leaves extract and NPs has 40% and 54% of scavenging activity and Benzene has 36% and …
EE was prepared using ethanol as a solvent. Antioxidant, antibacterial and other biological activity of EO and EE was determined using appropriate methods. ... The antioxidant index in the case of using extract (1000 μg mL-1) was 77.3±1.5 %. The metal chelating activity of EE was 74.5±0.2 %. The tyrosinase inhibitory activities of EO, EE and ...
Podophyllotoxin, along with its congeners and derivatives exhibit strong biological activity mainly as antitumor drugs and antiviral agents. Here, the ultrasound-assisted extraction of podophyllotoxins including α-peltatin, podophyllotoxin, podophyllotoxinone and deoxypodophyllotoxin from Juniperus sabina L. leaves using deep eutectic solvents (DESs) …
The contents and activity of the plant may vary depending on the habitat and part of the plant and the solvent used for extraction. The present study deals with the comparative chemical analysis and in vitro antioxidant activity of methanolic fruits extracts and its subfractions (in ethyl acetate, butanol and water) of W. somnifera collected ...