AIChE Journal

Publisher: American Institute of Chemical Engineers, John Wiley and Sons

Journal description

The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering.

Current impact factor: 2.58

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2011 Impact Factor 2.261

Additional details

5-year impact 2.54
Cited half-life 0.00
Immediacy index 0.61
Eigenfactor 0.02
Article influence 0.77
Website AIChE Journal website
Other titles AIChE journal (Online), AIChE journal, American Institute of Chemical Engineers journal
ISSN 1547-5905
OCLC 43667889
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details

John Wiley and Sons

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • See Wiley-Blackwell entry for articles after February 2007
    • On personal web site or secure external website at authors institution
    • Deposit in institutional repositories is not allowed
    • JASIST authors may deposit in an institutional repository
    • Non-commercial
    • Pre-print must be accompanied with set phrase (see individual journal copyright transfer agreements)
    • Published source must be acknowledged with set phrase (see individual journal copyright transfer agreements)
    • Publisher's version/PDF cannot be used
    • Articles in some journals can be made Open Access on payment of additional charge
    • 'John Wiley and Sons' is an imprint of 'Wiley'
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: We analyze the flow and mass transfer in a discontinuous reactor configuration consisting of a pair of corotating enclosed disks with a chemical reaction taking place at the disk surfaces. The calculated mass transfer efficiencies do not follow the expected Sh = Sh(Re,Sc) dependence because the overall mass transfer process is not boundary–layer controlled, especially at high Schmidt numbers.It has been found in all of the cases investigated that despite the fact that the reactant concentration is continuously dropping with time its spatial distribution, relative to the volume–averaged value, becomes stationary after a short initial transient. This result implies that the mass transfer efficiency in the discontinuous reactor also becomes stationary and the resulting time–independent value, Sh∞, obtained either directly from calculation or from the fit of the collected results, provides a fairly good estimate of the reactor operation time needed to achieve the target reactant conversion. © 2014 American Institute of Chemical Engineers AIChE J, 2014
    AIChE Journal 03/2015; 61(3):1015-1031.
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    ABSTRACT: Absorption of a weakly soluble gas into a two-layer film flowing down a vertical wall is studied in the framework of an approximate long-wave model. It is shown that wavy regimes in the film strongly affect the absorption rate. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;
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    ABSTRACT: Spontaneous oil percolation in french fries was studied dynamically at cellular scale using deep-UV synchrotron radiation enabling to image simultaneously the fluorescence of cell walls and of dyed oil. Experimental results report 75 oil filling kinetics of potato parenchyma cells previously emptied and equilibrated with superheated steam in conditions mimicking immersion frying. Counter-current oil-air flow was found the dominant factor controlling the kinetic of oil penetration, whereas trapped bubbles delay the passage of oil from the first to the second cell layer for additional several minutes. The frequency of occurrence of passages between layers was assessed much lower than the percolation threshold suggested by the hierarchical honeycomb arrangement of cells. A description relating microscopic oil-air flow and oil uptake is detailed in a companion paper. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;
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    ABSTRACT: This investigation studies accurate state of health (SOH) estimation in lithium-ion batteries, which plays a significant role not only in state of charge (SOC) estimation but also in remaining useful life (RUL) prognostics. SOC estimation and RUL prognostics often require one-step-ahead and long-term SOH prediction respectively. In this study, a systematic multiscale Gaussian process regression (GPR) modeling method is proposed to tackle accurate SOH estimation problems. Wavelet analysis method is utilized to decouple global degradation, local regeneration and fluctuations in SOH time series. GPR with the inclusion of time index is utilized to fit the extracted global degradation trend, and GPR with the input of lag vector is designed to recursively predict local regeneration and fluctuations. The proposed method is validated through experimental data from lithium-ion batteries degradation test. Both one-step-ahead and multi-step-ahead SOH prediction performances are thoroughly evaluated. The satisfactory results illustrate that the proposed method outperform GPR models without trend extraction. It is thus indicated that the proposed multiscale GPR modeling method can not only be greatly helpful to both RUL prognostics and SOC estimation for lithium-ion batteries, but also provide a general promising approach to tackle complex time series prediction in health management systems. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;
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    ABSTRACT: Lignocellulosic biomass is an abundant, renewable source of polysaccharides that could be available in amounts sufficient to provide a source of sugars for carbon neutral biofuel production. We review the background to biofuels production in the US from corn sugars and subsequent R and D efforts to saccharify plant biomass to provide an alternative sugar source. Research efforts and programs have generally not addressed the key technical hurdles in providing a commodity-scale supply of biomass and in developing biological routes to saccharify it at high yields. Techno-economic analyses of proposed processes highlight the importance of biomass cost and the role of pretreatment on both inhibitor generation and the contribution of enzyme costs to saccharification. Alternatives, such as the production of fatty acids by microalgae, have comparable technical hurdles. Although there is a regulatory framework for biofuels, which is discussed, a credible biological process for large-scale, cost-effective production of lignocellulosic biofuels remains elusive. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;
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    ABSTRACT: The composition of the stack gas from an oxy-combustion power plant is about 75 mol% carbon dioxide. The stream must be purified to about 95 mol% by removing light inerts such as nitrogen, oxygen and argon. The product stream must be compressed to 110 bar for sequestration. This paper presents a simple control structure for the double-flash compression and purification process to achieve these objectives. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;
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    ABSTRACT: The double T-junction microchannel is a classical microstructured chemical device used to generate gas/liquid/liquid three-phase microflows. An experimental study that focused on the three-phase flow phenomena and bubble/droplet generation rules in a double T-junction microchannel was introduced. Based on the published knowledge of gas/liquid and liquid/liquid two-phase microflows, new flow patterns were carefully defined: bubble cutting flow, spontaneous break-up and bubble cutting coupling flow, and bubble/droplet alternate break-up flow. According to the classical correlations of bubble and droplet volumes and their generation frequency ratio, the operating criteria for creating different three-phase flow patterns were established and a model for the dimensionless average bubble and droplet volumes in the three-phase microflows was developed. These various three-phase microflows have great application potential in material science and flow chemistry synthesis. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;
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    ABSTRACT: Fault detection and identification is challenged by a lack of detailed understanding of process dynamics under anomalous circumstances as well as a lack of historical data concerning rare events in a typical process. Qualitative trend analysis (QTA) techniques provide a way out by focusing on a coarse-grained representation of time series data. Such qualitative representations (QRs) are valid in a larger set of operating conditions and are thus provide a robust way to handle the detection and identification of rare events. Unfortunately, available methods fail when faced with moderate noise levels or result in rather large computational efforts. For this reason, this article provides a novel method for QTA. This leads to dramatic improvements in computational efficiency compared to the previously established shape constrained splines (SCS) method while the accuracy remains high. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;
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    ABSTRACT: Uncertainties in property models can significantly affect the results obtained from process simulations. If these uncertainties are not quantified, optimal plant designs based on such models can be misleading. With this incentive, a systematic, generalized uncertainty quantification (UQ) methodology for property models is developed in this work. Starting with prior beliefs about parametric uncertainties, a Bayesian method is used to derive informed posteriors by using the experimental data. To reduce the computational expense, surrogate response surface models are developed. For down-selecting the parameter space, a sensitivity matrix-based approach is developed. The methodology is then deployed to the property models for an MEA-CO2-H2O system. The UQ analysis is found to provide interesting information about uncertainties in the parameter space. The sensitivity matrix approach is also found to be a valuable tool for reducing computational expense. Finally, the effect of the estimated parametric uncertainty on CO2 absorption and MEA regeneration is analyzed. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;
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    ABSTRACT: Consideration is given to shear-rate-dependent rheology effects on mass transport in a heterogeneous microreactor of rectangular cross section, utilizing both numerical and analytical approaches. The carrier liquid obeys the power-law viscosity model and is actuated primarily by an electrokinetic pumping mechanism. It is discovered that, considering the shear-thinning biofluids to be Newtonian fluids gives rise to an overestimation of the saturation time. The degree of overestimation is higher in the presence of large Damkohler numbers and EDL thicknesses. It is also increased by the application of a favorable pressure gradient, whereas the opposite is true when an opposed pressure gradient is applied. In addition, a channel of square cross section corresponds to the maximum fluid rheology effects. Finally, the numerical results indicate the existence of a concentration wave when employing long channels. This is confirmed by analytical solutions, providing a closed form solution for wave propagation speed. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;
  • AIChE Journal 02/2015;
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    ABSTRACT: Controlling the final shape resulting from evaporation of pinned droplets containing polymer, is important in the fabrication of P-OLED displays by inkjet printing. Typically a coffee-ring shape arises, due to the pinning and associated outward capillary flow. For operational reasons, this is undesirable - a flat topography is required. We wish to understand the important groups governing the shape, to provide a practical guide to ink selection. The theory presented is based on a thin-film lubrication model. We solve the governing equations numerically and continuously track the lateral progression of a liquid/gel front. A large capillary number or large ratio of initial to maximal polymer volume fraction can suppress the coffee-ring. White light interferometry is used to confirm these findings experimentally. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;
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    ABSTRACT: To investigate dynamic behaviours of mono-charged particle systems, a direct truncation (DT) method and a hybrid particle-cell (HPC) method are implemented into the discrete element method coupled with computational fluid dynamics (DEM-CFD) with defined cut-off distances. The DT method only considers electrostatic interactions between particles within the cut-off distance while the HPC method computes electrostatic interactions in the entire computational domain. The deposition process of mono-charged particles in a container in air was simulated using the developed DEM-CFD. It was found that, using DT method, the macrostructure, evolution of granular temperature and radial distribution function of the particle system are sensitive to the specified cut-off distance. In contrast, using HPC method, these results were independent of the specified cut-off distance, as expected. This implies that, although electrostatic interactions between particles with large separation distances are weak, they should be considered in DEM-CFD for accurate modelling of charged particle systems. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;
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    ABSTRACT: Reactive crystallization is widely used in the manufacture of active pharmaceutical ingredients (APIs). Since APIs often have low solubility, traditional stirred tank reactors and the route of process operation and control using metastable zone width are not effective. The current work investigated the integration of an impinging jet mixer and a stirred tank crystallizer that can take advantage of both the reaction and crystallization characteristics, the focus being on design optimization and scale-up using process analytical techniques based on the Fourier transform Infrared spectroscopy and Focused Beam Reflectance Measurement, as well as X-ray diffraction and particle imaging Morphologi G3. The parameters for process operation and design of the impinging jet mixer were optimized. The research was carried out with reference to the manufacture of an antibiotic, sodium cefuroxime, firstly in a 1L reactor, then a 10L reactor. The crystals produced showed higher crystallinity, narrower size distribution, higher stability and purity. © 2014 American Institute of Chemical Engineers AIChE J, 2014
    AIChE Journal 02/2015; 61(2):503-517.
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    ABSTRACT: An inventory control system was developed for multiproduct batch plants with an arbitrary number of batch processes and storage units. Customer orders are received by the plant at order intervals and in order quantities that are subject to random fluctuations. The objective of the plant operation is to minimize the total cost while maintaining inventory levels within the storage or warehouse capacity by adjusting the startup times, the quantities of raw material orders, and production batch sizes. An adaptive model predictive control algorithm was developed that uses a periodic square wave model to represent the flows of the material between the processes and the storage units. The boundedness of the control output and the convergence of the estimated parameters in implementations of the proposed algorithm were mathematically proven under the assumption that disturbances in the orders are bounded. The effectiveness of this approach was demonstrated by performing simulations. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;
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    ABSTRACT: Accurate ηρpT data for isobutane were measured for nine isotherms between 298.15 K and 498.15 K using simultaneously a vibrating-wire viscometer and a single-sinker densimeter. The maximum pressure was 93 % of the saturated for subcritical isotherms and 30 MPa for supercritical isotherms. The density measurements are generally characterized by an uncertainty of ≤ 0.1 %. Allocation errors for temperature and pressure influence significantly their uncertainty in the near-critical region. A comparison with the equation of state by Bücker and Wagner shows agreement normally within ±0.1 %. The near-critical isotherm 410.15 K reveals differences to –3.7 % exceeding the uncertainty of 1.9 %. The uncertainty in viscosity is ≤ 0.3 %. The comparison with the correlation of Vogel et al. yields deviations exceeding the uncertainty of the correlation (3 %). The critical enhancement becomes evident for the near-critical isotherm amounting to 1.4 %. The new data will improve the viscosity surface correlation. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;
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    ABSTRACT: The sorption reaction CaO−CO2 was examined in a countercurrent gas−solid trickle flow reactor with regularly stacked packing at T = 500 − 600 °C, pCO2 = 40 − 50 kPa, solid-phase fluxes S = 0.3 − 0.5kg m−2s−1, and CaO particles of 500 − 710 μm in size. Sorption kinetics was evaluated by thermogravimetric (TG) technique. The random pore model was used for the description of the carbonization reaction. Hydrodynamic characteristics of gas−solid trickle flow were estimated at room temperature and ambient pressure. Plug flow model of both gas and solid-phase, with the parameters obtained from TG and hydrodynamics experiments, satisfactorily described the sorption process in countercurrent gas−solid trickle flow reactor. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;
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    ABSTRACT: Single- and double-walled anatase TiO2 nanovesicles have been respectively prepared by a template-free hydrothermal treatment of Ti(SO4)2 with H2O2 and urea. Photocatalytic degradation of Rhodamine B indicates that double-walled TiO2 nanovesicles have an initial lower but a final higher photocatalytic efficiency than single-walled ones. All nanovesicles have significantly lower performance than commercially available P25 TiO2. The enhanced capacity for UV light absorption and •OH radicals production, large specific surface area, and unique hierarchical hollow architectures contributes to the enhanced photocatalytic activity and improved feasibility of anatase TiO2 nanovesicles for engineering applications. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;
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    ABSTRACT: A detailed numerical study of the individual and cumulative effects of various mass, heat and momentum transfer resistances, which are generally present inside a practical adiabatic adsorber, on the overall separation performance of a rapid pressure swing adsorption (RPSA) process is carried out for production of nearly pure helium gas from an equi-molar binary (N2 + He) gas mixture using 5 A zeolite. Column bed size factor (BSF) and helium recovery (R) from the feed gas are used to characterize the separation performances. All practical impediments like column pressure drop, finite gas-solid mass and heat transfer resistances, mass and heat axial dispersions in the gas phase, and heats of ad(de)sorption causing non-isothermal operation have detrimental impacts on the overall process performance, which are significantly accentuated when the total cycle time of a RPSA process is small and the product gas helium purity is high. These impediments also prohibit indefinite lowering of BSF (desired performance) by decreasing process cycle time alone. This article is protected by copyright. All rights reserved.
    AIChE Journal 02/2015;