Showing papers in "Chemical Engineering Science in 2006"

TL;DR: The fundamental understanding of properties of inorganic nanoparticles in relation to cellular delivery efficiency as the most paramount issue will be highlighted and some key issues in efficient cellular delivery using in organic nanoparticles are highlighted.

TL;DR: Recently reported approaches to improve the enzyme stability in various nanostructures such as nanoparticles, nanofibers, mesoporous materials, and single enzyme nanoparticles (SENs) are reviewed.

TL;DR: In this paper, commercial single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotsubes (MWCNT) were used as adsorbents to study the adsorption characteristics of zinc from water.

TL;DR: In this article, an experimental verification of these expectations and simultaneously checking whether this anticipated gain in the filtration efficiency is not overpaid with an excessive pressure drop was performed, and the results of the experiments confirmed that using nanofibrous filters can achieve a significant growth of filter efficiency for the most penetrating particle size (MPPS) range and the pressure drop rises moderately.

TL;DR: In this paper, the numerical simulation of the Taylor flow in a microchannel, particularly on gas and liquid slugs, was performed on a T-junction empty microchannel with varying cross-sectional width (0.25, 0.75, 1, 2 and 3 mm).

TL;DR: Recent advances in the production of recombinant proteins by high cell density culture of E. coli are reviewed for enhanced protein production based on high-throughput omics approaches such as transcriptomics and proteomics.

TL;DR: In this paper, a gas phase process of single-walled carbon nanotube (SWCNT) formation, based on thermal decomposition of iron pentacarbonyl or ferrocene in the presence of carbon monoxide (CO), was investigated in ambient pressure laminar flow reactors in the temperature range of 600-1300 ǫ.

TL;DR: The mechanisms of aqueous wollastonite carbonation as a possible carbon dioxide sequestration process were investigated experimentally by systematic variation of the reaction temperature, CO 2 pressure, particle size, reaction time, liquid to solid ratio and agitation power as mentioned in this paper.

TL;DR: In this paper, the authors provide analysis of different regimes of diffusion and laminar flow convection combined with bimolecular surface reactions relevant to biochemical assays performed in microfluidic devices.

TL;DR: In this article, an experimental investigation was conducted in which carbon dioxide was captured in order to shift the steam reforming equilibrium for the production of hydrogen, and an atmospheric-pressure bubbling fluidized bed reactor (BFBR) of diameter 100mm was operated cyclically and batchwise, alternating between reforming/carbonation conditions and higher-temperature calcination conditions to regenerate the sorbent.

TL;DR: In this article, the mixing characteristics of a T-shaped micro-reactor with rectangular cross sections are studied for three different flow regimes, and a measure of the scale of segregation which employs the concept of specific contact area is defined.

TL;DR: In this article, a layered pressure swing adsorption (LPSA) process is proposed to selectively remove carbon dioxide and nitrogen from low and medium natural gas flowrates, which is composed of a zeolite 13X to selectively removing carbon dioxide followed by a layer of carbon molecular sieve 3K to make the separation of nitrogen from methane.

TL;DR: In this paper, the authors used a simple T-shaped micro-mixer with rectangular cross-sections and very smooth surfaces (reactive ion etching) to enable a good approximation by numerical models.

TL;DR: In this article, the effect of the model constant used in the sub-grid scale (SGS) model, as well as the interfacial closures for the drag, lift and virtual mass forces were investigated.

TL;DR: In this article, the influence of drag models on the computational fluid dynamics (CFD) modeling of spouted beds was analyzed. And the results obtained by the different drag models were verified using experimental data of He et al.

TL;DR: In this article, the shape and velocity of the slug, the velocity distribution and the distribution of local wall shear stress were computed and compared favourably with the published experimental findings.

TL;DR: The recent advances in protein folding are reviewed based on a classification of the approaches in comparative modeling, fold recognition, and first principles methods with and without database information.

TL;DR: A better understanding of the effects of PEGylation on the physicochemical properties of proteins (isoelectric point, surface charge density and distribution, molecular size and relative hydrophobicity) and interactions between P EGylated proteins and surfaces is needed for the future development of optimal purification processes and media.

TL;DR: In this paper, the authors investigated the hydrodynamics and heat transfer characteristics of tube-in-tube helical heat exchanger at the pilot plant scale, where the inner and outer tubes were fitted with semicircular plates to support the inner tube and provide high turbulence in the annulus region.

TL;DR: In this paper, a 3D simulator for methane hydrate formation and dissociation in porous media is developed for designing and interpreting laboratory and field hydrate experiments, which is used to study the formation and the dissociation of hydrates in laboratory-scale core samples.

TL;DR: A new discretization method for aggregation equations is developed which preserves all the advantages of the conventional discretized methods and provides a significant improvement in predicting the particle size distribution (PSD).

TL;DR: In this paper, the authors developed a hybrid predictive control strategy to stabilize a continuous crystallizer at an open-loop unstable steady-state, which employs logic-based switching between model predictive control and a fall-back bounded controller with a well-defined stability region.

TL;DR: In this paper, the second-order kinetic rate constant was found to be 70m3 mol−1 s−1 at a temperature of 298.15K, with an activation temperature of 4.1 × 103 K.

TL;DR: In this paper, a novel synthesis method based on a flow injection technique was developed and the synthesis of magnetite nanoparticles was performed to demonstrate the concept and the technique consisted of continuous or segmented mixing of reagents under laminar flow regime in a capillary reactor.

TL;DR: In this article, a kinetic theory based CFD code with a drag corrected for clusters captured the basic features of this flow regime: the dilute and dense regions, high dispersion coefficients and a strong anisotropy.

TL;DR: In this paper, the adsorption of Cr(VI) ions from aqueous solutions onto waste of tea factory in fixed beds was investigated, and experiments were carried out as a function of liquid flow rate, initial feed of CrVI concentration, particle size, feed solution pH and bed depth.

TL;DR: Venkatasubramanian et al. as discussed by the authors proposed a process history-based method to estimate the failure probabilities of safety systems and end states using copulas and Bayesian analysis to ensure better predictions.

TL;DR: In this article, an attempt is made to model slug flow inside square capillaries containing Newtonian liquids and a comprehensive description of such flow is obtained and a comparative study is conducted.

TL;DR: This review focuses on experimental and theoretical studies of protein-protein interactions and discusses the current caps in understanding these forces, which play a crucial role in biological systems.

TL;DR: In this article, gas dispersion in a double turbine baffled tank is modeled using a commercial computational fluid dynamics (CFD) code FLUENT 6.1 (Fluent Inc., USA) in order to account for the combined effect of bubble break-up and coalescence in the tank.