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1
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Separation of surfactant functionalized single-walled carbon nanotubes via free solution electrophoresis method

100%
Scheibe B., Rümmeli M., Borowiak-Palen E., Kalenczuk R.
Open Physics
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2011
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vol. 9
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issue 2
325-329
EN
This work presents the application of the free solution electrophoresis method (FSE) in the metallic / semiconductive (M/S) separation process of the surfactant functionalized single-walled carbon nanotubes (SWCNTs). The SWCNTs synthesized via laser ablation were purified through high vacuum annealing and subsequent refluxing processes in aqua regia solution. The purified and annealed material was divided into six batches. First three batches were dispersed in anionic surfactants: sodium dodecyl sulfate (SDS), sodium cholate (SC) and sodium deoxycholate (DOC). The next three batches were dispersed in cationic surfactants: cetrimonium bromide (CTAB), benzalkonium chloride (BKC) and cetylpyridinium chloride (CPC). All the prepared SWCNTs samples were subjected to FSE separation process. The fractionated samples were recovered from control and electrode areas and annealed in order to remove the adsorbed surfactants on carbon nanotubes (CNTs) surface. The changes of the van Hove singularities (vHS) present in SWCNTs spectra were investigated via UV-Vis-NIR optical absorption spectroscopy (OAS).
2
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The separation of TM and TE wave in multi-layer metamaterial structure

100%
Xia L., Yu G., Wang Q.
Open Physics
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2014
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vol. 12
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issue 2
141-146
EN
A mixed-structure form of one-dimensional metamaterial structure composed of single negative permittivity material and anisotropic metamaterial has been investigated in this paper. Such a multi-layer metamaterial structure constitutes special resonant structures, which can be used to control wave propagation and realize the complete separation of TM and TE wave by choosing specific parameters. Theoretical analysis and numerical calculations have been performed to confirm the above results. Specifically, augments in incident angles of TM and TE waves make complete transmission frequencies right shift, and the thicknesses of this resonant structure determine propagation modes and propagation frequencies.
3
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Numerical study on the standing morphology of an oblique detonation wave under the influence of an incoming boundary layer

100%
Zhou J., Liu Y., Lin Z.-y.
Open Physics
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2015
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vol. 13
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issue 1
EN
The influence of an incoming boundary layer to the standing morphology of an oblique detonation wave (ODW) induced by a compression ramp is numerically studied in this paper. The Spalart-Allmaras (SA) turbulence model is used to perform simulation of detonationboundary- layer interactions. Three different wall conditions are applied to realize control on the boundary-layer separation scales. Accordingly, different standing morphologies of the ODWs are obtained, including smooth ODW (without transverse wave) under no-slip, adiabatic wall condition with large-scale separation, abrupt ODW (with transverse wave) under no-slip, cold wall condition with moderate-scale separation, and bow-shaped detached ODW under slipwall condition without a boundary layer.
4
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The effect of hydrotropes on the solubility and mass transfer coefficient of 2-nitrobenzoic acid

100%
Thenesh-Kumar S., Gnana-Prakash D., Nagendra-Gandhi N.
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EN
A comprehensive investigation on the solubility and mass transfer coefficient enhancement of 2-nitrobenzoic acid through hydrotropy, has been undertaken. The solubility and mass transfer coefficient studies were carried out using hydrotropes such as sodium acetate, citric acid and nicotinamide under a wide range of hydrotrope concentrations (0 to 3.0 mol/L) and different system temperatures (303 to 333 K). It was found that the solubility and mass transfer coefficient of 2-nitrobenzoic acid increases with an increase in hydrotrope concentration and also with system temperature. All hydrotropes used in this work showed an enhancement in the solubility and mass transfer coefficient to different degrees. The maximum enhancement factor value has been determined for both the solubility and mass transfer coefficient. The effectiveness of hydrotropes was measured in terms of Setschnew constant Ks and reported for all the hydrotropes used in this study.
5
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Investigation of the distribution of chemical components in selected landfill layers and fly ash fractions

88%
Sambor A., Szymanek A.
Chemical and Process Engineering
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2012
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vol. 33
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issue 2
221-229
EN
The article concerns fly ashes generated from the combustion of hard coal and deposited on landfills. Investigation results describing fly ash taken from a combustion waste landfill are presented in the article. The investigation results indicate a possibility for combusting the coal reclaimed by separation from the fly ash and utilizing the remaining fly ash fractions.
6
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Automated test bench for research on electrostatic separation in plastic recycling application

88%
Regulski R., Czarnecka-Komorowska D., Jędryczka C., Sędziak D., Rybarczyk D., Netter K., Barański M., Barczewski M., Regulski R., Czarnecka-Komorowska D., Jędryczka C., Sędziak D., Rybarczyk D., Netter K., Barański M., Barczewski M.
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2021
7
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Investigation of the distribution of chemical components in selected landfill layers and fly ash fractions

75%
Sambor A., Szymanek A.
Chemical and Process Engineering
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2012
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issue 2
8
Content available remote

A study of cerium extraction by TBP and TODGA using a rotating diffusion cell

75%
Bromley M. A., Boxall C.
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issue 4
859-864
EN
For the study of the coupled interfacial-mass transfer kinetics of, inter alia, TBP, TODGA, CyMe4-BTBP and CyMe4-BTPhen based solvent extraction processes, a new rotating diffusion cell (RDC) apparatus has been established at Lancaster University. RDC studies of Ce(IV)/TBP and Ce(III)/TODGA extraction systems have been undertaken in order to improve the understanding of the chemical and kinetic processes involved. In each case, an interesting dependency on local hydrodynamics at the solution phase boundary with results suggesting that the organic extractant molecules migrate into the aqueous phase in order to capture Ce.
9
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A novel approach for calculating packed column height based on new correlation of mass transfer coefficient

75%
Rahbar-Kelishami A., Bahmanyar H., Hajamini Z.
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EN
The calculation of column’s height plays an important role in packed columns precise design. This research is based on experimentally measurement of mass transfer coefficients in different heights of packed column to predict its height. The objective of presented work is to introduce a novel conceptual method to predict column height via new correlation for mass transfer coefficient. As the mass transfer coefficient is decreased with increase of column height, the HTU’s are not constant figures along the column so this new approach is called increasing HTU’s. The results of the proposed idea were compared with other correlations and the conventional method i.e. constant HTU’s. Since the results are in very good agreement with experimental data comparing to conventional method, it seems this approach can be a turning point in design of all differential columns like packed columns. Making use of this method is suggested for design of differential columns.
10
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Influence of feed quality on quality of separation products evaluated by means of the fuerstenau plot for symmetrical separation curves

63%
Duchnowska M., Drzymała J., Duchnowska M., Drzymała J.
Gospodarka Surowcami Mineralnymi
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2011
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issue 2
11
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Comparing automatic baseflow separation filters on three watersheds in the urbanised area of East Java, Indonesia

63%
Indarto I., Hardiansyah M., Sujarwo M. W., Indarto I., Hardiansyah M., Sujarwo M. W.
Journal of Water and Land Development
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2021
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issue 50
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