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Showing papers in "Chemical Engineering Science in 2003"


Journal ArticleDOI
TL;DR: In this article, a simple, rapid and generalizable aerosol decomposition (spray pyrolysis) process for the continuous synthesis of nanoparticles with adjustable sizes, narrow size distribution, high crystallinity and good stoichiometry is described.

556 citations


Journal ArticleDOI
TL;DR: In this article, a two-dimensional elliptic, computational fluid dynamics (CFD) model of a micro-burner is solved to study the effects of microburner dimensions, conductivity and thickness of wall materials, external heat losses, and operating conditions on combustion characteristics and flame stability.

398 citations


Journal ArticleDOI
TL;DR: In this paper, the scaling-up of nanoparticle synthesis by the versatile flame spray pyrolysis process at production rates up to 1.1kg/h is investigated.

382 citations


Journal ArticleDOI
TL;DR: In this article, the fluoride ions were removed electrochemically from a solution using a combined electrocoagulation and electroflotation process, and the composition of the sludge produced from the operation was analyzed using X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometers (ToF-SIMS).

370 citations


Journal ArticleDOI
TL;DR: In this article, a new computational fluid-dynamic model with a separate granular temperature (2/3 random particle kinetic energy per unit of mass) equation for each phase or particle size was developed using constitutive equations derived earlier by Huilin, Gidaspow and Manger.

345 citations


Journal ArticleDOI
TL;DR: A short introduction of chemotherapeutic engineering to chemical engineers, biomedical engineers, other engineers, clinical oncologists, and pharmaceutical scientists, who are interested in developing new dosage forms of drugs for chemotherapy of cancer and other diseases with the best efficacy and the least side effects.

344 citations


Journal ArticleDOI
TL;DR: In this paper, the authors investigated the reaction between carbon dioxide and high CO 2-loaded, concentrated aqueous solutions of MEA over the temperature range from 293 to 333 K, MEA concentration range from 3 to 9M, and CO 2 loading from ∼ 0:1 to 0.49 mol/mol.

342 citations


Journal ArticleDOI
TL;DR: In this paper, a general model called the Donnan steric pore model and dielectric exclusion (DSPMD) is presented, in which the hindered nature of diffusion and convection of the species inside the membrane is considered.

314 citations


Journal ArticleDOI
TL;DR: In this article, the competition among heavy metals and hydrogen ions in solution is modeled by an equilibrium model describing the competition between heavy metals in the solution, where carboxylic and phenolic groups are the main active sites for metal removal.

305 citations


Journal ArticleDOI
TL;DR: In this article, a theoretical study of methane steam reforming coupled with methane catalytic combustion in a catalytic plate reactor (CPR) based on a two-dimensional model is presented.

261 citations


Journal ArticleDOI
TL;DR: The possibility of establishing a generalized multi-scale methodology, effective for analyzing single-phase turbulent flow in pipe, gas-solid two-phase fluidization, and gas- Solid-solid-liquid three- phase fluidization is proposed.

Journal ArticleDOI
TL;DR: In this paper, the quadrature method of moments (QMOM) is implemented in a commercial computational fluid dynamics (CFD) code (FLUENT) for modeling simultaneous aggregation and breakage.

Journal ArticleDOI
TL;DR: In this paper, a review of low-dimensional manifold construction for chemical kinetics from the standpoint of the method of invariant manifold (MIM) is presented, which is based on a formulation of the condition of invariance as an equation, and its solution by Newton iterations.

Journal ArticleDOI
TL;DR: In this article, the light-off of the partial oxidation of methane to synthesis gas (H2 and CO) on a rhodium/alumina catalyst is studied experimentally and numerically.

Journal ArticleDOI
TL;DR: In this article, the four-phase coexistence curves for the structure-H hydrates of methylcyclohexane and cis-1,2-dimethylcycloencylhexane in the presence of methane are measured in the temperature range 274.09-288.29K and pressure range 1.42-8.89MPa.

Journal ArticleDOI
TL;DR: In this article, a theoretical breakup kernel function for bubbles/droplets in a turbulent flow, based on an eddy-bubble/droplet collision method, is developed.

Journal ArticleDOI
TL;DR: In this paper, a new flowability criterion based on a novel technique to determine a high packing density was proposed, which is more sensitive to differences in flowability, as quantified by the repose angle.

Journal ArticleDOI
TL;DR: In this article, a Monte-Carlo method was used to generate realistic random packings of spherical particles, and the subsequent numerical simulation of the 3D flow field and coupled mass transport of reacting species is done by means of lattice Boltzmann methods.

Journal ArticleDOI
TL;DR: In this paper, the double-shell sorption mechanism was established for CO2 sorption kinetics and it can fit experimental data quite well, and the experimental CO2 uptake curves with the model were consistent with the literature data.

Journal ArticleDOI
TL;DR: In this paper, the energy and exergy losses of an air-blown biomass gasifier were analyzed for adiabatic systems at atmospheric pressure, with input of biomass and air at ambient conditions and steam at atmospheric pressures and temperature of 500 K.

Journal ArticleDOI
TL;DR: In this paper, the authors presented an experimental and theoretical investigation of CO2 absorption into aqueous blends of 2-amino-2-methyl-1-propanol (AMP) and diethanolamine (DEA).

Journal ArticleDOI
TL;DR: In this paper, the effects of surface-active contaminants on mass transfer coefficients k L a and k L were studied in two different bubble contactors and a theoretical interpretation was proposed based on modelling the kinetics of single bubble contamination, followed by sudden surface transition from mobile to rigid condition, in accordance with the stagnant cap model.

Journal ArticleDOI
TL;DR: In this paper, mathematical models of hollow-fibre and spiral-wound membrane modules were developed from rigorous mass, momentum and energy balances and can be used to describe a generic membrane separation, in contrast to most existing models which are typically process specific and are only valid within a limited operating range.

Journal ArticleDOI
TL;DR: In this article, the physicochemical and electrochemical properties as well as the activity of novel Ti/B-diamond electrodes for anodic oxidation of various dyes were investigated.

Journal ArticleDOI
TL;DR: In this paper, the authors presented a model that accurately predicts equilibrium pressures as a function of temperature of hydrates with CH 4, C 2 H 6, C 3 H 8, N 2, H 2, and CO 2 and their mixtures as guests.

Journal ArticleDOI
TL;DR: In this paper, a review of well-known fundamental work on the analysis of VLE diagrams is presented, along with a survey of less-known published results, especially from the Russian literature.

Journal ArticleDOI
TL;DR: In this paper, a Lyapunov-based nonlinear controller design approach that accounts explicitly and simultaneously for process nonlinearities, plant-model mismatch, and input constraints is proposed.

Journal ArticleDOI
TL;DR: In this paper, a model was developed to predict the change in droplet mass and temperature when it is exposed to hot air, as in spray drying of droplets containing solids.

Journal ArticleDOI
TL;DR: In this article, a bi-dimensional population balance model was developed to simulate the time variations of two characteristic sizes of crystals, and the nonlinear population balance equations were solved numerically over the bidimensional size domain using the so-called method of classes.

Journal ArticleDOI
TL;DR: A new miniature bioreactor with a diameter equal to that of a single well of a 24-well plate is described and its engineering performance as a fermenter assessed.