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Ultrasound-assisted leaching

In liquid-solid extraction (LSE) the analyte is extracted from the solid by a liquid, which is separated by filtration. Numerous extraction processes, representing various types and levels of energy, have been described steam distillation, simultaneous steam distillation-solvent extraction (SDE), passive hot solvent extraction, forced-flow leaching, (automated) Soxh-let extraction, shake-flask method, mechanically agitated reflux extraction, ultrasound-assisted extraction, y -ray-assisted extraction, microwave-assisted extraction (MAE), microwave-enhanced extraction (Soxwave ), microwave-assisted process (MAP ), gas-phase MAE, enhanced fluidity extraction, hot (subcritical) water extraction, supercritical fluid extraction (SFE), supercritical assisted liquid extraction, pressurised hot water extraction, enhanced solvent extraction (ESE ), solu-tion/precipitation, etc. The most successful systems are described in Sections 3.3.3-3.4.6. Other, less frequently... [Pg.60]

Salim OM, Mahir I, Mahmut Bayramo glu (2005) Leaching of silver from solid waste using ultrasound assisted thiourea method. Ultrason Sonochem 12(3) 237-242... [Pg.265]

FAAS, ETAAS The variables implied on an ultrasound-assisted acid leaching procedure were evaluated by experimental designs. The relevant variables were subsequently optimised by a central composite design and response surface... [Pg.114]

F. Priego-Capote and M. D. Luque-de-Castro, Dynamic ultrasound-assisted leaching of essential macro and micronutrient metal elements from animal feeds prior to flame atomic absorption spectrometry. Anal. Bioanal. Chem., 378(5), 2004, 1376-1381. [Pg.149]

P. Bermejo-Barrera, A. Moreda. Pineiro and A. Bermejo-Barrera, Factorial designs for Cd, Cr, Hg, Pb and Se ultrasound-assisted acid leaching from human hair followed by atomic absorption spectrometric determination, J. Anal. At. Spectrom., 15(2), 2000, 121-130. [Pg.152]

A continuous ultrasound-assisted device was studied by an experimental design in order to determine the leaching parameters... [Pg.304]

The leaching conditions of a ultrasound-assisted device were studied to obtain the best experimental settings Microwave acid extraction was implemented to recover metals from solid materials. The operational conditions needed to form the hydrides were set after ana-... [Pg.304]

The experimental conditions influencing an ultrasound-assisted continuous leaching process were studied using an experimental design... [Pg.304]

Vaisainen, A. and R. Suontomo. 2002. Comparison of ultrasound-assisted extraction, microwave-assisted acid leaching and reflux for the determination of arsenic, cadmium and copper in contaminated soil samples by electrothermal atomic absorption spectrometry. J. Anal. At. Spectrom. 17 739-742. [Pg.465]

Ultrasound-assisted extraction (USE) is an effective method for leaching many analytes from different kinds of samples [52-55]. It is simple, fast, efficient, and inexpensive in comparison with conventional extraction techniques such as solvent extraction in the Soxhlet apparatus. Ultrasound-assisted solid-liquid extraction is an effective and time-saving extraction method. Sonication accelerates the mass-transfer process between two phases. Use of ultrasound results in a reduction in operating temperature, allowing the extraction of temperature-sensitive components. The ultrasound apparatus is cheaper and its operation is easier in comparison with other novel extraction techniques such as MAE. [Pg.136]

Some contradictory results are obtained in the comparison of results in the determination of arsenic after ultrasonic slurry sampling — the use of sampling is not most appropriate in this case as the sampling step is before the slurry formation — ultrasound-assisted extraction — leaching has been the correct word in this case — and microwave-assisted digestion [28], which will be treated in detail in Chapter 5. [Pg.43]

DISCRETE VERSUS CONTINUOUS ULTRASOUND-ASSISTED LEACHING... [Pg.101]

Ultrasound-assisted leaching involves irradiating a sample-leachant system in order to facilitate the transfer of the target analytes to the liquid phase. [Pg.101]

Figure 4.2. Sample cells for continuous ultrasound-assisted leaching. (A) One-piece cell and (B) DIsmountable cell. (Reproduced with permission of Elsevier, Ref [2].)... Figure 4.2. Sample cells for continuous ultrasound-assisted leaching. (A) One-piece cell and (B) DIsmountable cell. (Reproduced with permission of Elsevier, Ref [2].)...
Figure 4.5. Experimental set-up for continuous ultrasound-assisted leaching in an open (A) and closed manifold (B). C — coil, CR — collection reservoir, L — leachant, LC — leaching chamber, PC — personal computer, PL — propagating liquid, PP — peristaltic pump, S / — switching valve, UP — ultrasonic probe, 1/1/ — waste and 1/1/6 — water bath. Figure 4.5. Experimental set-up for continuous ultrasound-assisted leaching in an open (A) and closed manifold (B). C — coil, CR — collection reservoir, L — leachant, LC — leaching chamber, PC — personal computer, PL — propagating liquid, PP — peristaltic pump, S / — switching valve, UP — ultrasonic probe, 1/1/ — waste and 1/1/6 — water bath.
ULTRASOUND-ASSISTED LEACHING VERSUS OTHER LEACHING ALTERNATIVES... [Pg.120]

Ultrasound-assisted leaching versus conventional Soxhiet leaching... [Pg.122]

Ultrasound-assisted leaching provides several interesting advantages over MAE, namely ... [Pg.123]


See other pages where Ultrasound-assisted leaching is mentioned: [Pg.223]    [Pg.82]    [Pg.99]    [Pg.100]    [Pg.101]    [Pg.102]    [Pg.103]    [Pg.104]    [Pg.105]    [Pg.106]    [Pg.107]    [Pg.108]    [Pg.109]    [Pg.110]    [Pg.111]    [Pg.112]    [Pg.113]    [Pg.113]    [Pg.114]    [Pg.115]    [Pg.116]    [Pg.117]    [Pg.118]    [Pg.119]    [Pg.120]    [Pg.122]    [Pg.123]    [Pg.124]   
See also in sourсe #XX -- [ Pg.48 , Pg.49 , Pg.50 , Pg.51 , Pg.52 , Pg.53 , Pg.54 , Pg.55 , Pg.56 , Pg.57 , Pg.58 , Pg.59 , Pg.60 ]




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Continuous Ultrasound-Assisted Leaching

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