Fully Automated Weighing of Liquid Substances with a Laboratory Robot

Werner, Albert; Blaschke, Tim; Harbou, Erik von; Hasse, Hans

doi:10.1002/ceat.201300605

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…In this work, the weighing of the sample and of the ISTD as well as the mixing were carried out manually. To reduce the manual labour further, these preparation steps can be carried out very accurately by a laboratory robot as described by Werner et al 41 The possibility to conduct the whole analysis process including the sample preparation and the GC analysis automatically makes this method very interesting when large numbers of samples have to be investigated such as in screening experiments.…”

Section: ■ Conclusionmentioning

confidence: 99%

Thermodynamic Study of a Complex System for Carbon Capture: Butyltriacetonediamine + Water + Carbon Dioxide

et al. 2016

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Different thermodynamic properties of aqueous solutions of butyltriacetonediamine (BuTAD), unloaded and loaded with carbon dioxide, are studied experimentally. For unloaded mixtures of BuTAD and water, protonation equilibrium constants between 283 and 333 K and liquid–liquid equilibria between 313 and 353 K, including the lower critical point, are determined at atmospheric pressure. Furthermore, the solubility of carbon dioxide in aqueous solutions of BuTAD between 313 and 393 K is determined at low loadings with an analytic method based on headspace gas chromatography and at high loadings with a synthetic method using a high pressure view cell. In the loaded system, solid precipitation, liquid–liquid phase split, and the presence of metastable states are observed in certain ranges. The data is interesting for assessing the aqueous solution of BuTAD as solvent for carbon capture. A short-cut method is used for comparing the new solvent with an aqueous solution of monoethanolamine (MEA) with respect to the energy requirement of an absorption/desorption process for CO2 scrubbing. Furthermore, a new and simple gas chromatographic method for determining the loading with carbon dioxide of aqueous solutions of amines is described.

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Section: ■ Conclusionmentioning

confidence: 99%

Thermodynamic Study of a Complex System for Carbon Capture: Butyltriacetonediamine + Water + Carbon Dioxide

et al. 2016

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“…Even though the set-up is ubiquitous, the optimum extraction conditions which maximizes solid-liquid extraction with minimal energy input and costs has not identified [40,41]. For identifying optimal conditions of a solid-liquid extraction, a laboratory robot provides a systematic and highly reproducible process development [42][43][44]. Temperature, pH value, and solvent composition influence not only extraction kinetics and pseudostationary equilibrium but also solubility and stability of the extracted secondary metabolites [45,46].…”

Section: Introductionmentioning

confidence: 99%

Polyphenols from Red Vine Leaves Using Alternative Processing Techniques

Bachtler

Bart

2018

Processes

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The extraction kinetics of polyphenols, which are leached from red vine leaves, are studied and evaluated using a laboratory robot and nonconventional processing techniques such as ultrasonic (US)-, microwave (MW)-, and pulsed electric field (PEF)-assisted extraction processes. The robotic high-throughput screening reveals optimal extraction conditions at a pH value of 2.5, a temperature of 56 •

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“…Both stock solutions were added in different ratios to the vials containing the adsorber using a fully automated liquid weighing laboratory robot. Details on the set-up are described in Werner et al (2014). The initial OA concentrations were between 0.1 mg/g and 5 mg/g and are known with an accuracy of better than 0.3 mg/g.…”

Section: Adsorption Experimentsmentioning

confidence: 99%

Adsorption of oleic acid dissolved in isopropanol–water mixtures on hydrotalcite

Fröscher

Hasse

2017

Adsorption Science & Technology

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Fatty acids are an interesting class of educts for chemical processes as they are available from renewable resources. For obtaining high-purity fatty acids, efficient separation techniques are needed. An interesting option is adsorption. In the present work, therefore, the adsorption of oleic acid on hydrotalcite, a readily available adsorbent, is studied. The focus is on studying the influence of the composition of the solvent on the adsorption. Adsorption isotherms are reported for oleic acid in pure isopropanol and mixtures of isopropanol and water at temperatures between 278 and 308 K. Even though the solubility of oleic acid in isopropanol is higher than in mixtures of isopropanol and water, the highest capacity of the adsorber is found for pure isopropanol. The reasons are discussed. No significant influence of the temperature was observed.

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Fully Automated Weighing of Liquid Substances with a Laboratory Robot

Cited by 7 publications

References 8 publications

Thermodynamic Study of a Complex System for Carbon Capture: Butyltriacetonediamine + Water + Carbon Dioxide

Thermodynamic Study of a Complex System for Carbon Capture: Butyltriacetonediamine + Water + Carbon Dioxide

Polyphenols from Red Vine Leaves Using Alternative Processing Techniques

Adsorption of oleic acid dissolved in isopropanol–water mixtures on hydrotalcite

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