Mar 01, 2021· Organosolvent extraction with steam explosion pretreatment made the biomass suitable for the enzyme activity due to the changes in its physicochemical characteristics. The optimization of cellulase activity including substrate loading, enzyme loading, pH, and, Temperature, resulted in better interaction on cellulase activity IU/ml yield.Feb 07, 2018· Shirzad et al. also studied on optimization of olive leave extraction in order to shorten the time of extraction and decrease the consumption of energy. The conditions for obtaining maximum yield of polyphenols, total flavonoids and antioxidants were optimized using RSM The effects of ultrasonic temperature (35–65°C), ultrasonic time (5–15 ...اقرأ أكثر
microwave-assisted extraction, supercritical fluid extraction, accelerated solvent extraction, or high hydrostatic pressure extraction are also applied in the extraction of different compounds (Xu et al., 2017). Among them, solid-liquid extraction represents the most commonly used method for extracting phenolics from various plants.Jun 01, 2020· The influence of experimental factors in solvent extraction for hydrocarbon recovery from oil sludge was investigated using an orthogonal experimental design. The results indicated that temperature, solvent type, solvent blend, solvent to sludge ratio, and treatment duration had significant effects on hydrocarbon recovery. In this investigation, a response surface methodology used to …اقرأ أكثر
This study intends to valorize by-products of the industrial processing of tobacco to obtain nicotine and phenolics as value-added compounds. Three influential parameters of the microwave-assisted extraction-MAE (temperature, treatment time, and solvent/solid ratio) were studied for the optimization of the extraction protocol for tobacco leaves and three types of waste—scrap, dust, and ...Back extraction optimization 1·10-3mol/L of picrates and the feed solution was mixed with was also successful with 94,12% removed Pb(II) ions from 50 mL of dichloromethane as organic solvent (contained the dichloromethane organic solvent layer with the same 1·10-3mol/L DCH18C6 as ligand).اقرأ أكثر
Mar 19, 2021· The results showed that L-Men-Lac was the best extraction solvent with extraction yields of 0.3286 mg/g (tryptanthrin), 0.5451 mg/g (indigo) and 0.4782 mg/g (indirubin), respectively, which were higher than those of other DESs and traditional solvents. In DESs, the type of HBD determined the extraction efficiency of alkaloids.Sebenik, Roger Frank, "The optimization of a solvent extraction plant to process monazite rare earth nitrates " (1968).Retrospective Theses and Dissertations. 3261. https://lib.dr.iastate.edu/rtd/3261اقرأ أكثر
Optimization of ultrasonic-stimulated solvent extraction of sinigrin from Indian mustard seed (Brassica Juncea L.) using response surface methodology Phytochem Anal . May-Jun 2011;22(3):205-13. doi: 10.1002/pca.1266.Optimization of extraction of antioxidants from the melon flesh was performed using 22 solvent combinations to understand the impact of extraction solvents on the antioxidant activity. Both DPPH and ABTS scavenging activities were carried out to investigate the effect of solvents on antioxidants extraction.اقرأ أكثر
Keywords: optimization, solvent extraction, nicotine, tobacco, RSM, I. INTRODUCTION Tobacco (Nicotiana tabacum L) belong to the genus Nicotiana, and is native to America. These plants spread all over Indonesia and have utility primarily for raw material for making cigarettes. In 2005 the land area is 198 367 ha of tobacco, consists of various ...suitable solvent for the TC extraction from rapeseed among the tested solvents. 3.2 Optimization of Extraction Conditions by RSM In our preliminary study, variables affecting TC extrac- tion were solid-solvent ratio, extraction duration, extrac-tion repeated cycles and extraction temperature. The optimum experiments were conducted by using a five-اقرأ أكثر
Jul 27, 2020· In order to achieve the maximum levels of oil extraction efficiency and antioxidant activity, and the minimum peroxide value and color index, optimization of oil extraction from hemp seed with ultrasound pretreatment was conducted at different temperatures (30–60°C) and different times (30–90 min) using different solvents (hexane ...diluent (biodiesel-phase) to solvent (water-phase). The unsteady mass balance of the solute glycerol in the stirred tank batchwise solvent extraction is dt dC kca CA * −CA = A (1) Optimization of Biodiesel Washing by Water Extraction Suprihastuti Sri Rahayu and Aswati Mindaryani Proceedings of the World Congress on Engineering and Computer ...اقرأ أكثر
1 Optimization of accelerated solvent extraction of antioxidants from Spirulina platensis microalga. Miguel Herrero1, Pedro J. Martín-Álvarez1, F. Javier Señoráns2, Alejandro Cifuentes1, Elena Ibáñez1* 1 Instituto de Fermentaciones Industriales (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain. 2 Área de Tecnología de Alimentos, Facultad de Ciencias, Univ. Autónoma de Madrid,The solvent extraction of petroleum nut oil by soaking method (Pittosporum resinferum Hemsl.) using ethanol as solvent, was studied and optimized. The petroleum nuts used were deseeded, dried and sized reduced to an upper limit of 0.5 cm. The parameters that were considered in the optimization study were operating temperature and solvent-to-nut ...اقرأ أكثر
Mar 01, 2021· Solvent extraction has been traditionally performed in devices such as extraction columns, centrifugal extractors, and mixer-settlers. These usual methods have some defects, for instance, long operation time, ... Optimization of operating parameters and validation of results.A Box-behnken response surface methodology (RSM) was used for the optimization study while statistical analysis using ANOVA was used to test the significance of the variables for the process. The variables considered for this study were: sample weight (g), solvent volume (ml) and extraction …اقرأ أكثر
Raspberries have been reported to contain abundant anthocyanins and other active compounds. To extract anthocyanins from raspberries more efficiently, a novel procedure of ultrasound-assisted deep eutectic solvent extraction (UADESE) was proposed in this paper. The extraction process was optimized by response surface methodology coupled with a genetic algorithm.Solvent Extraction Optimization of Chlorophyll Dye 17 2.2 Solvent Extraction and Determination of Total Chlorophyll The acetone and the deionized water were used as solvent in the chlorophyll dye extraction process at an 80:20 ratio. The solvent was added to a 250-mL Erlenmeyer flask with a known quantity of Conocarpus lancifolius leave ...اقرأ أكثر
Sep 19, 2018· This study aims to increase the hazelnut oil yield using ultrasound as initial treatment in hexane solvent extraction. A Box–Behnken design was applied to optimize the ultrasound amplitude (30%, 60%, and 90%), solvent to solid ratio (6:1, 8:1, and 10:1) and extraction …Feb 02, 2017· The extraction section of the solvent extraction plant consists of a number of mixer-settlers in series. The aqueous leach liquor flows through these counter-current to an organic stream which is made up of LIX 64N dissolved in a kerosene carrier, and the copper content of the leach liquor is transferred into the organic phase.اقرأ أكثر
Feb 01, 2017· Description of the Solvent Extraction Process. Solvent extraction (SX) is applicable in any instance where it is desirable to selectively remove or extract a species from one solution into another. This can apply either to the removal of a valuable component from contaminants or to the removal of contaminants from the valuable component.Background: We received a phone call from a customer that was planning to start up a Solvent Extraction facility designed to process wheat germ.. The facility was supposed to extract wheat germ oil and wheat germ meal from wheat germ, both very valuable products — if the user's specifications are met. The original start up team spent several weeks trying to make the equipment work, but ...اقرأ أكثر
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