Fluid–structure interaction (FSI), the combination of computational fluid dynamics and computational solid mechanics, is considered as a procedure to determine the stress or strain of the solid under the influence of flow movement. Common parameters such as pressure and temperature that existed in the fluid solver and solid solver are the core factors of date communication in FSI. This work investigated

In this study, double‐layer flat sheet membranes consist of nanocomposite polyvinylidene fluoride (PVDF)–ZnO layer on the top, whereas pristine polymeric PVDF on the bottom was fabricated via the double‐casting phase inversion (DCPI) method. The nanocomposite layer was prepared by loading 0.5%, 1.0%, 1.5% and 2.0% of ZnO nanoparticles. The morphology of the membranes changed as ZnO nanoparticles were

No abstract is available for this article.

Flue gas desulfurisation is a prerequisite for successful CO2 capture in coal‐fired power stations utilising aqueous amine absorbents. For nations like Australia, where there is nonexistence of mandatory flue gas desulfurisation, this increases the cost for power plants retrofitting CO2 capture. The CSIRO's CS‐Cap process, a potentially low cost method for combined CO2 and SO2 capture, provides an

In this work, we have explored for the first time the potential application of trace‐Fe(III)/chlorine system as an innovative oxidation technology for the degradation of persistent textile dyes. Fe(III)/chlorine combination improved the dye removal by ~40% within 30 s, as compared with chlorination alone, mainly through a radical pathway induced by the catalytic activation of chlorine in the presence

In this work, hierarchically porous nanocrystalline ZSM‐5 was synthesized hydrothermally. Different concentrations of copper were incorporated into the matrix by ion exchange method. The synthesized samples were characterized by means of X‐ray diffraction (XRD), Fourier‐transform infrared (FTIR), energy‐dispersive X‐ray spectroscopy, scanning electron microscopy, X‐ray photoelectron spectroscopy (XPS)

Hollow nanosphere structure has a favorable catalytic performance in catalysis. Not only the large specific surface area, excellent mass transfer ability but also the special cavity structure. This particular structure was applied in the direct synthesis of dimethyl carbonate (DMC) from CO2 and methanol. A series of CeO2 hollow spheres of varying sizes and shell numbers were fabricated via a facile

Glycol‐mediated facile solvothermal process for synthesis of mesoporous cobalt ferrite (CoFe2O4) nanoparticles (NPs) is reported. The structure, surface functionalization and morphology of the prepared sample are characterized by X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and field emission scanning electron microscope (FESEM). The role

Polyolester (POE) oil and mineral (Min) oil are widely used in household refrigerators as compressors lubricants in India. An experimental calculation on the thermal, chemical, corrosion, and nature‐friendly properties of POE oil and Min oil suspended with silica nanoparticles is conducted for confirming its practicality to adopt in refrigeration compressors as nanolubricant. No surfactants were used

In this work, pure barium titanate (BT) and cobalt doped barium titanate (CBT) were synthesized by using barium chloride, tetrabutyl titanate, cobalt chloride, and titanium chloride as precursors via a two‐step hydrothermal process. These precursor mixtures were further blended with a dispersion of surfactant + graphene nanoplatelets (GNP) judiciously during the second step of hydrothermal process

In the present study, a commercial TiO2, several BiVO4 photocatalysts, a WO3 nanomaterial, and their composites were used to prepare photocatalytic polyvinylidene fluoride (PVDF) ultrafilter membranes. Their photocatalytic activities and the effects of coatings on the filtration of oil‐in‐water emulsion (crude oil; coil = 100 mg L−1) were investigated. Fluxes, filtration resistances, purification efficiencies

In this study, naphthalene heat pipes were produced and filled with different materials to test the heat transfer performance. The relationship between the pipes' diameters, liquid content, wall temperature distribution, and transmission power was studied. An explosion test was designed to assess the operating temperature limit of the naphthalene heat pipes. The results demonstrated an optimum filling

A crude oil refining is a capital intensive process and releases a huge amount of environmentally unfriendly side‐products. Scheduling of crude oil that determines the optimal unloading of crude from vessels to storages, transfer to blending tanks, and charging to distillation units (CDUs) in a way that minimizes the total operating cost has become the focus of the studies in the last few decades.

The present study considers computational evaluation of mixing performance in a T‐mixer having staggered fins. A novel arrangement consisting of two pairs of staggered fins is incorporated and placed close to the entrance of the mixing channel. A parametric study is performed to examine the effects arising from the geometric and flow parameters alteration. With respect to all the parameters investigated

The present study aims to conduct a systematic assessment of Al‐SBA‐15 as the aluminum‐substituted mesoporous catalyst for raw methanol dehydration to dimethyl ether (MTD). The catalysts are synthesized by varying the pretreatment variables (pH of the preparation and Si/Al ratio), the posttreatment variable (steaming time), and by the addition of aluminophosphate as the binder. The experimental design

The particle attrition could lead to the degradation of industrial product quality and results in a series of environmental problems. However, the influence of material properties on the attrition process of particles has long been ignored by researchers. In this article, the particle attrition characteristics of inorganic materials are investigated in a laboratory‐scale fluidized bed reactor (FBR)

Fluidized beds are widely used in many chemical engineering industrials, and flow behaviors of multiphase flow have always been the focus of research. This paper presented how rolling friction and cohesive liquid affected wet particle flow behaviors by experiments, simulation, and data analyses. Experiments were conducted for applying a suitable range of rolling friction coefficient. A discrete element

Effects of combustion instability on flame macrostructures and NOx emissions were conducted experimentally in a model gas turbine combustor. Two variables of the CH4 flame were investigated—the flow rate and the equivalence ratio. Results indicate that flame macrostructure changes when the equivalence ratio increases from 0.50 to 1.00, the average total length of flame front firstly decreases from

Oil/water separation and heavy metal ion adsorptions have become a worldwide challenge due to the global industrial development and its indiscriminate discharge. Large numbers of methods have been developed to solve the problems, among which using superwettability material to selective separation is one of an efficient approach. However, this method cannot adsorb the heavy metal ions from water. Herein

Water washing can effectively remove Na, K, and Cl in biomass, which can cause fouling, slagging, and corrosion during thermal conversion process of biomass fuels. However, it is necessary to dispose the leachates appropriately after water washing. Characterization of organic matters in leachates should be performed first, which is beneficial to find an effective way to dispose the leachate. In this

This paper presents the design of a decentralized proportional–integral (PI) controller for a wastewater treatment plant (WWTP). The aeration rate and the return recycle sludge rate are manipulated inputs to the WWTP process, while substrate and biomass concentration are considered as the output variables. The study is divided into two segments: A decentralized controller is designed based on the best

The hydrodemethylation reaction of 3,4‐xylenol on micro/mesoporous catalysts with active component TiO2 was studied. TiO2/YM‐m and TiO2/YM‐c micro/mesoporous materials were, respectively, derived by loading TiO2 with the composition and mechanical mixing of Al‐MCM‐41 and HY zeolite. The effect of the bifunctional catalysts on the catalytic performance of hydroxymethylation of xylenol before and after

A comparative study of isobaric Vapor‐Liquid‐Liquid Equilibria (VLLE) prediction using the COnductor like Screening MOdel Segment Activity Coefficient (COSMO‐SAC) model was performed on nine Ionic Liquids (ILs) and their extractive properties were evaluated for the separation of toluene/1‐heptane mixtures using IL‐based extractive distillation. For better insights into the IL‐hydrocarbon mixture behavior

An improved high‐temperature flue gas combustion technology was developed and examined in this study. The high‐temperature flue gas generator generated a flow of flue gas at a high temperature (720°C) with low oxygen content (10%), which flowed into the main combustion zone and acted as the carrier gas for pulverized bituminous coal (0–0.355 mm) in the combustion chamber. In the combustion chamber

Coal fly ash (CFA), a solid waste from power plants, was selected as the support of Ni‐based catalysts used for steam reforming of toluene in a fixed‐bed reactor. The CFA support was thermally pretreatment first, followed by chemical activation with different treatment time (6 h to 4 days) in 2‐mol/L HNO3 solution. Then, series low‐cost catalysts were prepared by wet impregnation. The prepared catalysts

Clean water supply has become one of the biggest challenges of the 21st century; therefore, water source protection is of increasing importance. Beyond environmental protection reasons, economic concerns—derived from increasing costs of processing water and wastewater discharge—also prompt industries to use advanced wastewater treatment methods, which ensure higher purification efficiency or even the

It is challenging to separate 2,4‐/2,5‐xylenol isomers with very close boiling points. In the present work, a multistep process for the separation of 2,4‐/2,5‐xylenol isomers from coal tar was investigated, involving alkylation, distillation, and dealkylation. Starting from the selection of suitable catalyst, the operating conditions for alkylation, distillation, and dealkylation were optimized by

Researches about commercial‐scale production of fucoxanthin are increasing day by day due to the much interest of its broad beneficial health effects. The aim of this study was to investigate the scale‐up methodologies in airlift photobioreactor and to simulate fluid flow using computational fluid dynamics (CFD) for fucoxanthin production from Phaeodactylum tricornutum microalgae. During the transition

In the new era of Chinese economy stepping toward high‐quality development, with the enhancement of the public environmental protection awareness and continuous improvement of technological innovation level, it is of great significance to study how technological innovation reduces water contamination against unofficial environmental regulations, which is also the primary task of construction of ecological

To commercialize large‐scale and high‐density microalgae cultivation, a 10L cross‐flow flat‐plate airlift photobioreactor (CFA‐PBR) was designed and amplified to two types of 40L CFA‐PBRs via different scaling‐up methods. The multiphase flow characteristics and bioreaction process of these CFA‐PBRs were studied by experiments and computational fluid dynamics (CFD) simulation. The results show that

Ce0.85Sm0.15O1.925–Sm0.6Sr0.4Al0.3Fe0.7O3‐δ (SDC‐SSAF) hollow fiber membranes aimed for oxyfuel application are fabricated via a phase inversion‐sintering technique using powders synthesized from EDTA–citrate complex method. Oxygen ions transport is revealed to be the limiting step that determines the overall oxygen transport rate in SDC‐SSAF. SDC‐SSAF hollow fiber membrane attained a maximum flux

In the present article, the special effects of fluid inertia forces and magnetic field in circular squeeze film bearings greased with a time‐independent thixotropic non‐Newtonian fluid have been brought to the limelight. The pressure delivery and load carrying capacity representing the recitals of bearing have been calculated with the values of yield number, thixotropic parameter, power‐law index,

TiO2 nanotube array (TNA) electrode materials can effectively degrade organic compounds by photoelectrocatalysis. In this study, the depletion oxidation reaction in thin‐layer reactor was adopted, and the reaction characteristic and reaction mechanism of photoelectrocatalytic degradation of different types of organic pollutants by TNA electrode prepared by anodizing technology were studied. Moreover

For the lime modified carbonate rock soil road subgrade of port highway, after the lime modified carbonate rock filler is used to treat it, the particle discrete unit has the characteristics of sparsity, and the particle gradation is caused by the seepage of soil mass, and with the increase in load, overload load occurs. It is therefore necessary to establish relevant mathematical models to analyze

The flow blockage of the horizontal pipe is a severe problem in dense pneumatic conveying; accelerating the collapse of blockage can improve the efficiency of powder transportation. In this paper, the pipe‐rotation mechanism was proposed for the first time, and its effect on blockage collapse was preliminarily discussed. A horizontal pipe‐rotation geometry with a linear variation of rotating speed

Separation of phenolic compounds from coal tar is of both economic and technological interest in the processing of coal tar. In this work, three deep eutectic solvents (DES) of betaine‐glycerol, betaine‐dl ‐lactic acid, and betaine‐levulinic acid were formed and used to extract phenolic compounds from model coal tar. The effects of extraction time, temperature, initial phenol content, and mass ratio

Numerical simulations of shear‐thinning and shear‐thickening fluid flows past a circular cylinder are performed using a lattice Boltzmann method. In this study, the property of shear‐thinning and shear‐thickening fluids is expressed by the Carreau model. We focus on the definition of an effective (representative) Reynolds number for describing the flow of shear‐thinning and shear‐thickening fluids

A sensitive hollow shell‐based non‐enzymatic glucose sensor was developed using Mn‐Cu‐Al layered triple hydroxide on the surface of nickel foam (Mn‐Cu‐Al‐TH/NF). Mn‐Cu‐Al‐TH nanocomposites were prepared using a facile microwave‐assisted technique, and its hollow structure was created by continuous treatment with urea. The electrochemical activity of the Mn‐Cu‐Al‐TH/NF electrode was examined by cyclic

The relationship between valence state of cerium ion and the catalytic activity for dimethyl carbonate (DMC) synthesis directly from carbon dioxide and methanol was investigated by using four CeO2 catalysts calcined at the different temperatures, which showed different concentrations of Ce4+ analyzed by XPS. In situ Fourier transform infrared spectroscopy (FTIR) was used to probe CO2 and methanol adsorption

No abstract is available for this article.

Multieffect distillation with thermal vapour compression (MED–TVC) is one of the most attractive thermal desalination technologies for the production of freshwater. Several mathematical models were presented in the open literature to analyse the steady‐state performance of such process. However, these models have several limitations and assumptions. Therefore, there remains the challenge of having

Herein, we report on the activity and selectivity of bulk γ‐Mo2N catalysts for Fischer–Tropsch lower olefin (FTO) synthesis. An increase in surface area and a decrease in crystallite size were observed for γ‐Mo2N catalysts prepared with the increased molar amount of citric acid (CA), used as a chelating agent during the catalyst synthesis. The reaction products were mainly C2–C3 hydrocarbons in the

The adsorption of Reactive Red 33 dye from aqueous solution onto light expanded clay aggregate (LECA) in a batch mode, fixed‐bed reactor has been investigated. The adsorption studies were determined as a function of dye initial concentration, pH, flow rate, temperature, and adsorbent size using response surface methodology. The maximum amount of dye removal (85.11%) was obtained in the optimized conditions

In order to improve the yield of crops, the method of soil water content detection and analysis based on experimental reflectance spectrum data is adopted. From the four aspects of the farmland soil water detection based on reflection spectrum information, soil water content detection in farmland based on spectral absorption characteristics, remote sensing inversion of soil water content of farmland

The traditional capillary radiant air conditioning system based on back propagation (BP) neural network optimization model of carbon dioxide refrigerant filling, using neural network algorithm to optimize the carbon dioxide refrigerant filling, there is a big error. Aiming at this problem, a carbon dioxide refrigerant charging and filling optimization model in capillary radiant air conditioning system

The combined influence of temperature dependent viscosity and internal heat source on the onset of convection in porous enclosures saturated by a viscoelastic fluid is studied using linear and weak nonlinear stability theories. The enclosures are taken to be rectangular, square, and slender. For the viscoelastic fluid, the Oldroyd‐B type model is used, whereas the Darcy's model is taken for porous

Since the existence of cement concrete, the early cracking problem of recycled concrete directly affects the application of concrete in engineering. Cracks can increase the permeability of concrete and lead to the decrease of structural durability of concrete in the corrosive environment. The reason causing this fatal problem is the shrinkage of concrete. The purpose of this paper is to improve the

The gas permeability of a coal seam was the main factor determining the efficiency of gas extraction from the mines and was closely related to the coal damages. In this paper, a triaxial compression failure test of the raw coal was carried out in the gas seepage state using the MTS 815 rock mechanics testing system. The damage evolution law of the coal containing gas under triaxial compression was

Experiments were conducted to investigate the inner structure of gas–liquid flow in airlift pumps by a laser Doppler velocimetry (LDV) system and a laser‐high speed photography. The measured central plane of the riser pipe was illustrated by a laser device, and the corresponding gas–liquid flow in this plane was recorded by a high speed camera. The results showed it was the wispy annular flow, rather

Soil is an important part of human survival, and people's lives cannot be separated from soil. At present, soil pollution in China is becoming more and more serious, especially heavy metal pollution. Based on this, a method for evaluating the effect of heavy metal pollution treatment in rural areas in northern Anhui was proposed. Taking Liulangguan Lane, Nanling, and Dapu in the south of Anhui Province

The production of energy from wood biomass is as old as humanity itself. There has been enormous progress in research of sustainable pyrolysis processes for optimal energy conversion in the past 30 years. Pyrolisis–gas chromatography–mass spectrometry (PY‐GC‐MS) was used to examine the components of bark and wood of Toona sinensis for expanding high value utilization different parts of trees. In the

The operational status of Wastewater Treatment Plant (WWTP) A in Tianjin was simulated via WEST 2012 software. It was found that with secondary biological treatment, the chemical oxygen demand (COD), ammonia nitrogen, and total nitrogen in the effluent can reach Level 1‐A standards, while the total suspended solids (TSS) and total phosphorus slightly exceed the standard threshold. When subjected to

The supernatant solution of silicate species extracted from coal fly ash (CFA) by NaOH fusion is used under acidic conditions with surfactant pluronic P‐123 to prepare the mesoporous silica (SBA‐15). Structural properties of prepared SBA‐15 are found close to those prepared by pure chemicals. Furthermore, the synthesized mesoporous silica (SBA‐15) from CFA is used as support in Fischer–Tropsch synthesis

This work aims at enhancing the thermal conductivity of base fluids (water and methanol) through successive washing of polymers from the surface of polyvinylpyrollidone (PVP)‐stabilized copper (Cu) nanoparticles. Cu nanofluids were successfully synthesized and characterized using transmission electron microscope and UV–vis spectrophotometer. Thermal conductivity of freshly prepared Cu nanofluid shows

Three kinds of activated coke powders (ACPs) were prepared from different coal by a one‐step rapid pyrolysis activation method. Detailed pore structure and surface characteristics of the ACPs were characterized by BET specific surface area test, scanning electron microscope (SEM), and Fourier transform infrared spectrometer (FTIR). Adsorption capacity of ethyl acetate, benzene, and p‐xylene onto the

In this work, Zr‐doped CaO‐based sorbents were prepared at several kilograms per batch using a simple sol–gel technique. CO2 adsorption performance and cycling stability of the synthesized sorbents were significantly improved in consequence of the incorporation of Zr component. Technological conditions of the scale‐up production were optimized, including precursor concentration of calcium, amount of

This study investigated the environmental impact of the operation of lignite‐fired power plants in Yunnan Province. Soil, water, vegetable plant, and bottom ash samples were collected from around three lignite‐fired power plants in the area and the contamination levels of Cr, Cu, U, Mn, Cd, Ba, Pb, Sb, Co, and Ni in the samples were measured by inductively coupled plasma‐mass spectrometry (ICP‐MS)

The interface mechanical properties of graphene and titanium composites in traditional studies lack molecular dynamics simulation and cannot construct composite interface model. A method for studying the interfacial mechanical properties of graphene/titanium in composite materials based on beam search algorithm is proposed, using the beam search algorithm to simulate the tensile deformation of graphene

In order to quantitatively analyze the effect of powder on fiber dispersion, the surface free energy theory was applied to test the surface free energy parameters of each powder based on the “capillary rise method”. Then, the surface free energy of each powder was further calculated. Finally, based on a certain ratio, the fiber reinforced cement was formed. In terms of the test piece, the profile of

Biodiesel production technologies, which are non‐catalytic and those involving the use of heterogeneous catalyst(s), have gained much interest owing to its high biodiesel and pure glycerol throughput. During the past 15 years, many studies were devoted to explore new catalysts as well as improve non‐catalytic technologies with aims to ultimately industrialize such biodiesel production processes. This