Showing papers in "Chemical Engineering Science in 2020"

TL;DR: In this paper, the Navier-Stokes order continuum theory is used for CFD simulation of the hydrodynamics of gas-solid fluidization, without taking the effects of heat and mass transfer as well as chemical reactions into consideration.

TL;DR: The results indicate that both of the models can give reliable predictions on the CO2 solubilities in ILs and the ANN-GC model performs slightly better than the SVM-based model.

TL;DR: In this article, a user-defined solver towards the high-fidelity CFD-DEM method with thermochemical sub-models integrating is developed based on the open-source MFIX-DEM software for simulating biomass gasification in a fluidized bed reactor.

TL;DR: In this paper, the authors provide an introduction to coupled computational fluid dynamics (CFD-DEM) modeling in process engineering systems, including heat and mass transfer and long range forces, and review the major researches in simulation of two-phase processes such as drying, coating, granulation, crystallization, chemical reactions (including combustion, gasification and pyrolysis) and mixing.

TL;DR: In this article, a new metal organic framework (MOF) sacrificicial strategy is designed to synthesize flux-enhancing nanofiltration membrane for efficient dye removal, which demonstrated a flux enhancement of 745% than pristine polypyrrole (PPy) one with maintained rejection.

TL;DR: In this paper, an improved control structure CS3 combining the composition-(RR1/SIDE) cascade and feedforward strategy is developed to achieve decent dynamic responses for the EDSH.

TL;DR: A workflow based on convolutional neural networks (CNN) is proposed that can be used with a wider range of experimental conditions and achieved accurate results for different experimental conditions.

TL;DR: In this paper, the incorporation of cellulose nanoparticles (CNCs) resulted in a greater surface roughness and a higher surface area to the membranes, and the results indicated that the water permeance of TFN membranes increased by 70% compared to a pristine TFC membrane with the CNCs loading mass of 5.5 µg/cm2.

TL;DR: In this paper, green and low-cost 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP or H4L) was used as pH-dependent switch to initially depress fluorite for calcite pre-removal at pH 6.0, and then activate fluorite to further upgrade fluorite concentrate at pH 8.0.

TL;DR: In this paper, methanol and ethylene glycol dispersions of ultrasmall ZnO nanoparticles are firstly adopted as pseudohomogeneous catalysts for alcoholysis of PET.

TL;DR: In this paper, an integrated analytical and experimental approach was scrutinized to find the heat transfer optimization of flow condensation using nanorefrigerant, and it was proved that the optimum nanoparticle fraction is significantly depend on the mass velocity and vapor quality.

TL;DR: In this article, the authors conducted experimental investigations to test the functionality of robust nanoemulsions comprising of gemini surfactant/polymer/silica nanoparticle assemblies; and explained mechanistic behavior of nanoemulsion-assisted oil displacement on a molecular scale.

TL;DR: The results show that SS-SAE can utilize both labeled and unlabeled data to extract quality-relevant features for soft sensor modeling, which is superior to multi-layer neural network, traditional SAE and DBN.

TL;DR: In this paper, a POM-based MOF was synthesized in situ with a carboxyl-functionalized ionic liquid as a bridge to combine the POM and MOF.

TL;DR: In this article, the results from a particle resolved simulation were used to calibrate the heat transfer and reaction kinetics of particles, and a hybrid drag model was used to consider the different fluidization properties of sands and biomass particles.

TL;DR: In this paper, the authors present a coherent understanding of the mechanism of sonocrystallization and a newly emerging field of ultrasonic spectroscopy, which is relatively unexplored but holds a tremendous potential for online monitoring of crystallization.

TL;DR: In this article, a calcination induced self-assembly concept was proposed to the fast synthesis of ordered mesoporous carbons with structural base N sites (A-N-OMC-Ts), without using any solvent and catalysts.

TL;DR: In this paper, the authors proposed a rational approach towards the design of a large scale air-lift reactor for cultured meat manufacturing, which is used as a primary tool to provide an a priori estimation of the mass transfer and mixing performance of the reactor and the effects of reactor internals.

TL;DR: In this article, Co/mesoporous alumina (MA) catalysts promoted with Ce, La, Sm, and Y were evaluated via methane dry reforming, and the results showed that Co particle dispersion on MA was evidently improved after promoter incorporation, resulting in smaller crystallite size and lesser Co agglomeration.

TL;DR: In this paper, an ex-situ flame doping and the TiO2 nanorod arrays, dopants of Sn and W ions are prototypical system for photoelectrochemical water splitting, in which the dopants are diffused quickly into the outer surface region of theTiO2 in less than 30 s.

TL;DR: In this article, a facile melamine-based approach for the synthesis of hierarchical architecture composed of ultrathin mesoporous silica nanosheets was presented, which showed higher CO2 capture ability (176.5mg/g−1 at 75°C and 1bar) than other mesoporus silica-supported amine sorbents, and provided durable adsorption performance.

TL;DR: In this article, an effective approach was presented for the synthesis of N-doped carbon dots via a microplasma-assisted process at atmospheric pressure, and the effects of operation parameters on the surface groups and photoluminescence property of carbon dots were studied in detail.

TL;DR: In this article, the authors reported the application of immobilized Ag/TiO2 onto coconut and sisal fibers to anthracene degradation via the UV-vis radiation using post-synthesis method.

TL;DR: In this paper, a review of the performance of metal foam heat exchangers for various industrial applications and the implications of particulate fouling on the thermal performance were provided, and the development of advanced numerical methods to unravel heat exchanger fouling mechanisms could pave the way for an optimized heat exchange design with minimum energy consumption and greenhouse gas emissions.

TL;DR: In this article, a coupled CFD-DEM and Monte Carlo approach was developed to investigate coating properties in a Wurster fluidized bed by considering gas flow, particle motion, droplet deposition, and drying and solidifying of droplets on particle surfaces.

TL;DR: In this paper, a large-scale roll-to-roll initiated chemical vapor deposition (iCVD) system was developed to allow for coating superhydrophobic thin films on flexible substrates.

TL;DR: In this article, the performance of 3D-printed zeolite monoliths for CO2/N2 separation at 5bar 25°C was evaluated and the effects of cell density, wall porosity, and inlet gas velocity on their separation performance were investigated.

TL;DR: In this article, the Fe3O4@Ti3C2 hybrid was proposed to address the dispersion and volume change of nanocrystals during continuous charge/discharge with the enhancement of structural stability and the exposure of abundant active sites.

TL;DR: In this article, a high-throughput computational screening of 6013 computation-ready experimental metal organic frameworks (MOFs) is employed to identity the best candidates for methanol-MOF pairs in adsorption-driven heat pumps and chillers.

TL;DR: In this paper, a nonthermal plasma source based on magnetically stabilized gliding arc discharge (MSGAD) was used to prepare carbon nanoparticles via methane decomposition.