effect of sonication conditions solvent time temperature

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Sonication - Know More

Sonication is the act of applying sound energy to agitate particles in a sample for various purposes such as the extraction of multiple compounds from plants microalgae and seaweeds Ultrasonic frequencies gt 20 kHz are usually used leading to the process also being known as ultrasonication or ultra-sonication In the laboratory it is usually applied using an ultrasonic bath or an...

Determination of Some Heavy Metals in Human Hair by - Know More

Operating conditions for ultrasonic acid digestion of Cr Ni and Pb from human hair sampl Parameters Solvent systems HNO 3 H 2 O 2 ml Presonication time min Sonication time min Temperature 176 C Optimal conditions 2 1 10 30 60 311 Effect of solvent systems The influence of solvent systems of concentrated HNO 3 and mixture of HNO 3 and...

Insight into the deep eutectic solvent pretreatment of oil - Know More

Although Tajudin et al 2019 reported on the use of a choline chloride-imidazole mixture for pretreating different native EFB there has been no comprehensive study on the effect of different pretreatment conditions ie temperature biomass to solvent ratio and time on the performance of pretreated EFB and the DES liquor residues after...

Effect of sonication conditions solvent time and - Know More

Effect of sonication conditions solvent time temperature and reactor type on the preparation of micron sized vermiculite particles Farman Ali a b c Laurence Reinert a Jean-Marc Leveque a Laurent Duclaux a Fabrice Mullerd Shaukat Saeed...

Influence of the Sonication Temperature on the Debundling - Know More

The effect of sonication temperature on the debundling of carbon nanotube CNT macro-bundles is reported and demonstrated by analysis with different particle sizing methods The change of bundle size over time and after several comparatively gentle sonication cycles of suspensions at various temperatures is reported A novel technique is presented that produces a more homogeneous...

Effects of Sonication Processing on the Behavior of the - Know More

Variations of the sonication intensity probe are studied to determine its effect on the characteristics of nanoparticles such as average agglomerate size polydispersity of the solution and surface charge The processing conditions have an important effect on the morphology particle size and the formation of a stable nanoparticles phase 2...

Effect of sonication at different ultrasonic frequencies - Know More

determined The optimum extraction temperature was found to be 35 176 C and the optimum time was 8 min under agitation at 40 kHz There were other reports as highlighted above but extensive literature search did not yield any report on the effect of sonication on the quality or quantity of fatty acids of oils extracted from alga cells...

1 Introduction - Know More

The effect of sonication time on the intrinsic viscosity of the aqueous dispersions of microgels has been investigated at 12-mL reaction volume depth of horn as 2 cm and operating temperature at 25 176 C Figure 1 shows the effect of sonication time on the viscosity and swelling of hydrogel sample It can be seen from the figure that with the...

Processes Free Full - Know More

The effects of process variables sonication time and extraction temperature on oil recovery and quality vitamin E content and antioxidant capacity were investigated The fitted models gave significant p -values of 00007 00035 and 00022 for extraction yield vitamin E content and antioxidant capacity respectively with corresponding...

Effects of Sonication on the Size and Crystallinity of - Know More

Effects of Sonication on the Size and Crystallinity of Stable Zwitterionic Organic Nanoparticles Formed by Reprecipitation in Water Rabih O Al-Kaysi Astrid M Mu 168 ller Tai-Sang Ahn Soohyun Lee and Christopher J Bardeen Department of Chemistry University of California Riverside California 92521 Received May 2 2005 In Final Form June...

Influence of the Sonication Temperature on the Debundling - Know More

Jan 31 2013 0183 32 The effect of sonication temperature on the debundling of carbon nanotube CNT macro-bundles is reported and demonstrated by analysis with different particle sizing methods The change of bundle size over time and after several comparatively gentle sonication cycles of suspensions at various temperatures is reported...

Low temperature followed by matrix solid - Know More

Feb 28 2011 0183 32 Liquid-liquid extraction LLE followed by low temperature method were optimized by studying the effect of type and volume of organic solvent acetonitrile acetonitrile n-hexane 3 2 v/v and acetone and time of freezing to obtain high recovery yield and...

Effect of sonication conditions Time temperature and - Know More

Mar 03 2021 0183 32 The influence of sonication conditions amplitude of ultrasound probe = 50 and 75 time = 5 10 and 15 min and temperature = 45 55 and 65 ºC on the properties of yoghurt was investigated The apparent viscosity hardness and lightness increased when sonication time temperature and amplitude increased...

1 Introduction - Know More

To determine the optimal extraction conditions a number of experimental factors amount of graphene amount of salt type and volume of the desorbing solvent desorption time with and without sonication energy and temperature during desorption were studied The compounds of interest were separated and detected by an HPLC-UV employing a...

Ultrasound - Know More

Nov 06 2013 0183 32 extracts Indeed temperature solvent extracting power extraction time and the method adopted for extraction influence significantly the composition of the extract 4 This variability is due to the different affinities of these compounds for solvent extraction and specifically to the polarity of the molecules constituting the solvent 5 In...

PDF Effects of Frequency and Sonication Time on - Know More

The effect of sonication time and Ca P ratio 15 and 167 on the properties of the powder was investigated by means of thermogravimetric analysis TGA X-ray diffraction XRD FT-Raman...

Extraction Quantification and Characterization of - Know More

Jul 01 2007 0183 32 The optimum conditions for extracting phenolics from rice bran were sonication with water 1 100 sample-to-solvent ratio for 1 min output intensity of 10 holding at ambient temperature and autoclave treatment for 20 min at 121 degrees C This procedure extracted 885 /- 018 mg of phenolics/g of dried rice bran...

Study of the Ultrasound - Know More

UAE process were temperature 176 C sonication time min and solvent concentration where each variable had three levels A total of 27 33 combinations of factors were obtained and performed Each experiment had three replicates and three readings for each sample Thus a total of 243 samples were used for the study The only effects...

Effect of sonication conditions Solvent time - Know More

May 01 2014 0183 32 The effects of temperature time solvent and sonication conditions under air and Argon are described for the preparation of micron and sub-micron sized vermiculite particles in a double-jacketed Rosett-type or cylindrical reactor...

Effects of indirect sonication pretreatment and solvent - Know More

following defined conditions that was set in the full factorial design with sonication power at 2 levels low and medium 10 50W sonication time at two levels 10 20 mins by using a bath sonicator Powersonic 420 Gyeonggi-do S Korea After that the sample mixture was subjected to solvent extraction for 1hr at room temperature using...

Review Article LIPOSOME METHODS OF PREPARATION AND - Know More

organic solvent by placing the vial or flask on a temperature sonication time and Since it is nearly impossible to reproduce the conditions of sonication size variation between batches produced International Journal of Pharmaceutical Studies and Research E-ISSN 2229-4619 IJPSR/Vol III/ Issue II/April-June 2012/14-20...

Optimization of the Ultrasound - Know More

Aug 07 2017 0183 32 The conditions for achieving the maximum yield of TMA were similar under the conditions that maximized the extraction of TPC particularly the sonication power and temperature The extraction time was the only parameter that slightly differed eg a 10-min increase in the extraction time caused a decrease in the TMA yield Figure 4 b...

Effects of Tip Sonication Parameters on Liquid Phase - Know More

Aug 17 2018 0183 32 Graphene nanoplatelets GNPs can be produced by exfoliating graphite in solvents via high-power tip sonication In order to understand the influence of tip sonication parameters on graphite exfoliation to form GNPs three typical flaked graphite samples were exfoliated into GNPs via tip sonication at power of 60 100 200 or 300 W for 10 30 60 90 120 or 180 min...

Lipid yield from the diatom Porosira glacialis is - Know More

Dec 17 2020 0183 32 This study investigated the effect of sonication solvent choice and number of extractions on the lipid yield lipid class composition and fatty acid composition of...

1 The Power of Ultrasound - Know More

in contact with the solvent In this way ultrasonication remains unique since no attained between the intended effects and sonication amplitude since as explained above high amplitudes lead to high sonication intensities and high sonication sonochemical effect is achieved 1313 Temperature...

Effect of sonication conditions solvent time - Know More

Effect of sonication conditions solvent time...

Sonochemical synthesis of ZnO nanoparticles The effect of - Know More

The effects of temperature time solvent and sonication conditions under air and Argon are described for the preparation of micron and sub-micron sized vermiculite particles in a double-jacketed Rosett-type or cylindrical reactor...

Effects of various factors of ultrasonic treatment on the - Know More

The effects of various factors including the extraction time temperature solvent/material ratio the ultrasonic intensity and duty cycle of ultrasonic irradiation on the extraction yield of all-trans-lycopene from red grapefruit by ultrasound-assisted extraction UAE were investigated...

Effect of sonication conditions solvent time - Know More

The effects of temperature time solvent and sonication conditions under air and Argon are described for the preparation of micron and sub-micron sized vermiculite particles in a double-jacketed Rosett-type or cylindrical reactor The resulting materials were characterized via X-ray powder diffraction XRD Field Emission Scanning Electron Microscopy FE-SEM Fourier Transform Infrared...

PDF Effect of sonication conditions Solvent time - Know More

Oct 21 2013 0183 32 The effects of temperature time solvent and sonication conditions under air and Argon are described for the preparation of micron and sub-micron sized vermiculite particles in...

EFFECT OF TEMPERATURE AND SONICATION ON THE - Know More

investigated extraction time 1-8 hours temperature 40 50 60 and 80 176 C and sonication 40 duty cycle and without sonication with solvent-to-sample ratio 1 10 The power intensity at 866 W/cm2 was implemented using ultrasonic processor Q700 700 watts 20kHz provided by...

Ultrasonic - Know More

Sonication however improves the extraction efficiency of substances by increasing yield and reducing processing time and solvent consumption Moreover ultrasonic-assisted extraction is done at a low temperature preventing thermal damage to the extracts and loss of volatile components Vilkhu et al 2008 In order to optimize...

Sonication in Organic Synthesis Chem - Know More

May 07 2016 0183 32 Unlike the stirring conditions the sonicated conditions showed little solvent dependence Application to acetal protection of a sugar 3 The use of ultrasonication shortened the reaction time and improved the yield of diacetal by 20-30...

Optimization of ultrasound - Know More

The optimal conditions were 20 min sonication time 40 176 C temperature at pH 50 using a 4 1 mL/g solvent-to-sample ratio The study demonstrated that optimization of ultrasound-assisted process conditions for the enzyme extraction could improve the enzymatic characteristics and yield of...

Study of the temperature and solvent content effects on - Know More

optimized reactants composition and operating conditions Operating conditions such as reaction time pressure pH and temperature are very important to obtain high quality MOF crystals 20 32-34 The crystal structure prediction design and control of topology of MOFs can be possible just through a detailed study on these factors...

Sonication - Know More

Jul 01 2020 0183 32 Sonication-assisted extraction has been used to extract bioactive substance from Hibiscus sabdariffa Deep eutectic solvent was specially designed by mixing and heating citric acid hydrogen bond acceptor and ethylene glycol hydrogen bond donor The process conditions amplitude of the ultrasound extraction time and water level in the solvent of the sonication-assisted extraction were...

Effect of sonication conditions solvent time - Know More

Abstract International audienceThe effects of temperature time solvent and sonication conditions under air and Argon are described for the preparation of micron and sub-micron sized vermiculite particles in a double-jacketed Rosett-type or cylindrical reactor...

Effect of ultra - Know More

et al 2010 During ultra-sonication treatment various factors viz frequency solvent temperature percentage of amplitude treatment time viscosity of the solvent ultrasonic input and output power etc may affect the efficacy of the treatment Cao et al 2010 Controlling all these variables is difficult therefore a robust and potent...

Solubility and molecular state of Ce0 and in solvents and - Know More

solvent may depend on the experimental conditions The possible effects of temperature illumination or sonication always should be clarified to get meaningful solubility valu MOLECULAR STATE OF C AND C IN SOLUTION There are two problems concerning the molecular states of fullerenes in solution One should determine...

Preparation and optimization of nano - Know More

Preliminary screening was performed based on solubility and the Damkohler number which resulted in the selection of acetone as a solvent and n-hexane as an anti-solvent The L-18 Hunter design was applied for studying the effect of five independent variables type of stabilizer concentration of stabilizer sonication time temperature and...

Effect of sonication conditions solvent time - Know More

Effect of sonication conditions solvent time temperature and reactor type on the preparation of micron sized vermiculite particles Farman Ali Laurence Reinert Jean-Marc Lévêque Laurent Duclaux Fabrice Muller Shaukat Saeed Syed Sakhawa Shah To cite this version Farman Ali Laurence Reinert Jean-Marc Lévêque Laurent Duclaux Fabrice Muller et al...

PDF Ultrasound - Know More

The sonication conditions of 120 sec and 26 output power were established in a previous study for o-DCB wherein it was observed that the absorbance before centrifugation was seen to be maximised Clearly this is not quite the case for the dispersions after sonication but most importantly the optimal sonication conditions are solvent dependent...

Techniques for extraction and isolation of natural - Know More

Apr 17 2018 0183 32 Any factor enhancing the diffusivity and solubility in the above steps will facilitate the extraction The properties of the extraction solvent the particle size of the raw materials the solvent-to-solid ration the extraction temperature and the extraction duration will affect...

Use of Sonication for the Coupling of Sterically Hindered - Know More

a reaction time of 7 days was required to achieve synthetically useful yields 70-75 However when the reaction concentration was increased from 01 to 30 M and submitted to sonication conditions compound 1 was obtained in 75 yield in only 15 min In this report we demonstrate the utility of this variation of the Mitsunobu...

Ultrasound - Know More

sonication conditions vary significantly including sonicator types sonication times and temperature solvent parameters are temperature dependent therefore increasing the complexity of the study used to investigate the effect of sonication time from 20 s to 220 s in 20s intervals for each sample All 6...

Ultrasound - Know More

Apr 19 2010 0183 32 The effects of sonication intensity and time were investigated in o-dichlorobenzene o-DCB and dimethylformamide DMF The aggregation fraction below the dispersion limit of SWNTs in the range of organic solvents was found to be influenced by the solvent parameters particularly solvent vapor pressure and viscosity...

PDF Catalyst and solvent - Know More

Entry Solvent Time S Yielda Ultrasound assisted synthesis of organic compounds is a well 1 Solvent-free 20 99 established protocol and has been authenticated as a substitute en- 2 Hexane 20 90 ergy source for organic reactions ordinarily accomplished through 3 Ethyl acetate 20 89 heating27 Many homogeneous and heterogeneous reactions can...

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