Showing papers in "Chemical Engineering Science in 2019"

TL;DR: In this article, the authors focused on various flow and heat transfer modes of nanofluid, metal foam and the combination of the two, with the physical properties of nanophluid and metal foam summarized.

TL;DR: Zhang et al. as discussed by the authors modified Zn anode with graphene oxide (Zn@GO) by a facile solution casting method, which can deliver electrons across insulating ZnO, slow down the Zn intermediates from dissolving into the electrolyte, and thereby enhance the utilization and rechargeability of ZnAnodes.

TL;DR: In this article, the impacts of local thermal non-equilibrium model and Al 2 O 3 -water nanofluid on natural convection heat transfer in a porous cavity consisting of a bottom heated wavy wall and an inner solid cylinder are investigated.

TL;DR: In this article, waste cooking oil was gasified at variable temperatures (375,675,°C), feed concentration (25,40,wt%) and reaction time (15,60,min) to investigate their effects on syngas yield and composition.

TL;DR: In this article, the molar entropy and Gibbs free energy of pure gaseous substances were predicted in the temperature range of 100 to 6,000 K using a closed-form representation.

TL;DR: For a single isolated particle, the effect of overlap displacement on conduction and particle diameter/fluid velocity on convection were comprehensively studied using a CFD-DEM method coupled with heat exchange as mentioned in this paper.

TL;DR: The proposed methodology generates evidence from monitored process data and uses the information to update the DBN that captures the process knowledge and shows that it can detect the fault and diagnose the root cause of the fault precisely.

TL;DR: Rational mesoscale models can be established to provide multiscale simulation methods that do not need to fully reproduce the micro- and mesoscales details of the systems but can still take into account their effects on macroscales.

TL;DR: This study introduces a novel methodology for fault detection and diagnosis (FDD), based on a combined approach of data and process knowledge driven techniques, which detects the abnormalities based on process history while the Bayesian Network diagnoses the root causes of faults.

TL;DR: In this article, a numerical method for calculating the mass transfer coefficient in fibrous media is presented, where pressure driven flow is modelled using the Lattice Boltzmann Method.

TL;DR: In this article, a zwitterionic surfactant was selected to study its wettability alteration and adsorption behavior on sandstone and carbonate samples, and the adorption profile was fitted to isotherm models and best-fitted model was determined by R2 values.

TL;DR: In this article, a visualization experiment was carried out to study the gas-liquid flow in a vertical pipe containing a swirler with four helical vanes, and a swirling flow regime map was proposed and compared with the previous non-swirling and swirling maps available in the publications.

TL;DR: In this article, a dynamic 1D heterogeneous model is presented for the methanation of carbon dioxide under industrially relevant operating conditions with periodic oscillations of the inlet feed composition.

TL;DR: In this article, the effects of ultrasonic power and frequency on nanobble concentration and diameter were investigated and the results calculated by the model were in good agreement with the experimental data.

TL;DR: In this article, the displacement behavior of CO2/N2 flooding was investigated at the molecular and atomic level, and the synergistic effect of the CO2 slug and N2 slug was found to be better than single phase injection and even better than mixture gas (flue gas) flooding.

TL;DR: In this article, a coarse-grained computational fluid dynamics and discrete element method (CFD-DEM) is developed for modeling the fluidized bed gasifier and the results show the non-uniform spatial distributions of the gasification rate in both the horizontal and vertical directions, which reflect the preferential distribution of fuel particles.

TL;DR: In this article, the influence of the Ga loading on the physicochemical properties of Ga-modified HZSM-5 zeolite and its performance in the gas-phase aromatization of 2,5-dimethylfuran with ethylene was investigated.

TL;DR: In this article, an inorganic-organic light-absorbing material, copper sulfide-macroporous polyacrylamide hydrogel (CuS-m-PAM), is reported for the first time.

TL;DR: In this article, a single transition metal (TM) atom (TM = Sc, Ti, V, Cr, Mn, Fe, Co, Ni and V atom anchored on the experimentally realized 558 grain boundary (GB) was investigated as a highly efficient electrocatalyst for hydrogen evolution reaction (HER).

TL;DR: In this article, a microfluidic and transparent sand pack model was used to investigate mechanisms of emulsion propagation and plugging in both pore and macro scales, and the effect of pore structure on residual oil displacement after surfactant/polymer (SP) flooding by injecting the same emulsion slug.

TL;DR: In this article, the impact of two different MOF defect sites on the multicomponent CO2/H2O adsorption behavior was determined and the simulations provided a molecular-level understanding of the role of these defects on the single and binary adaption behavior.

TL;DR: In this article, an apparatus was designed for investigating hydrate dissociation in drilling fluids, and the effects of thermodynamic hydrate inhibitors (THIs), polyvinyl pyrrolidone (PVP), and soybean lecithin were studied.

TL;DR: In this paper, spout deflection in a flat-bottomed spout fluidized bed is investigated at the particle scale by means of Computer Fluid Dynamic-Discrete Element Method (CFD-DEM) coupling approach.

TL;DR: In this paper, a graphene oxide-based nanohybrids decorated with TiO2 nanoparticles (TiO2@rGO) were synthesized and incorporated into the thin-film nanocomposite (TFN) membrane for efficient organic solvent nanofiltration (OSN) with antifouling properties.

TL;DR: In this paper, the changes in interaction and confining distances between water molecules and the nanotube wall can induce freezing, wet/dry transitions and even produce high flow rates.

TL;DR: In this paper, a novel surfactant bearing both hydroxyl and thione groups was proposed for selective flotation-separation of chalcopyrite from pyrite.

TL;DR: In this article, the mean activity coefficients of NPs in solution combined with the equation proposed by Li and Lu (2001) for single electrolyte solutions to estimate the change in surface tension.

TL;DR: In this article, a strategy for confining single-atom Fe in porous carbon was proposed and the Fe@COF catalysts were tested as peroxymonosulfate (PMS) activators for organic pollutants abatement.

TL;DR: This fundamental investigation attempts to derive a material-property-dependent drag modification based on generated data from an initially homogeneous state of periodic gas-particle suspensions and introduces a deviation index (DI) to quantify the predictive capability of the extended model.

TL;DR: In this article, a fast adhesive discrete element method based on scaling laws is proposed to reduce particle Young's modulus, surface energy and modify rolling and sliding resistances simultaneously in the framework of Johnson-Kendall-Roberts (JKR)-based contact theory.