Abstract In recent years electrochemical energy storage solutions such as supercapacitors have emerged as an attractive option. Supercapacitor electrode materials which are carbon-based composites with metal/metal oxide/metal hydroxide show enhanced energy density properties otherwise lacking in purely carbon-based systems. In this work, carbon nanospheres (CNSs) were synthesized using the hydrothermal

Abstract In this study, the flotation behaviors of gold and gold-associated sulfide minerals (pyrite and sphalerite) in a polymetallic sulfide gold ore were investigated using flotation kinetics parameters. It was found that high gold recovery (>90%) can be achieved by the selective flotation of pyrite and sphalerite. However, the sphalerite flotation results showed that sphalerite could not be separated

Abstract Investigation of the parameters affecting the agglomeration process of nanoparticles and its morphology is a challenging research problem. In recent years, various computer simulation methods are developed to study the effect of different parameters on the process of agglomeration. This paper investigates the behavior of dry TiO2 nanoparticles in a three-dimensional periodic box. Simulations

Abstract The aim of the present investigation is to develop zaltoprofen-loaded extended-release (ER) pellets formulation by an extrusion-spheronization technique using glyoxalated pre-gelatinized starch (GPS) complex as a novel matrix-forming polymer. The prime objective was to prepare an efficient and robust ER drug delivery system of zaltoprofen. Pellets were characterized by physicochemical, morphological

Abstract The present study enabled green synthesis and characterization of starch-functionalized magnetic nanoparticles to be released by the chemical co-precipitation of magnetite phase from aqueous solution in a different type of polymeric starch matrix (corn and wheat). To examine the structural changes which would occur when preparing starch-functionalized magnetic nanocomposites, the parameters

Abstract Objective of study was to develop a solid self-nanoemulsifying rosuvastatin drug delivery system (S-SNEDDS) for enhancement of its oral bioavailability and to produce synergistic action with garlic oil for better management of hypertriglyceridemia. Results showed that mean globule size of all reconstituted self-nanoemulsifying drug delivery system (SNEDDS) was found to be in nanometric range

Abstract In this research article, we present a simple and rapid method for synthesis of zinc oxide nanoparticles (ZnONPs) using zinc acetate dehydrate, sodium hydroxide and leaf extract of an important anti-diabetic plant Andrographis serpelifolia (As). The results reveal that UV-visible absorption spectrum indicates peaks at 325 nm which confirms the biosynthesis of ZnONPs. Fourier transform infrared

Abstract Nanoparticles (NPs) are known as fundamental building blocks of nanotechnology. In this work, silver nanoparticles (AgNPs) were synthesized using Stachys annua L. sabsp. annua var. annua. The structure of AgNPs was elucidated by FTIR, UV-Vis, XRD, SEM analyses. The UV-Vis spectrum revealed the maximum absorption at 469 nm and SEM spectral analysis showed the formation of spherical shape AgNPs

Abstract In order to decrease the soot particles’ harmful emission, it is necessary to use a diesel particulate filter (DPF) on cars. Recent years, many countries standardize using DPF on cars. In this paper, a multi-objective design optimization study is performed by using the nondominated sorting genetic algorithm (NSGA-II) to obtain an optimum DPF geometry. In the present study, two objective functions

Abstract The improvement of vitrinite content in low-rank coal can enhance liquefaction efficiency. In this work, an innovative rotary triboelectric separator (RTS) was used to enrich the macerals of low-rank coal. The effects of friction wheel speed (A), separation voltage (B), and feed rate (C) of RTS on the macerals enrichment were investigated, and the interactions of the three factors were explored

Abstract This study focuses on the effects of bed-height and number of revolutions on the granular mixing performance with an objective to derive a mathematical relationship between mixing performance and number of revolutions. The simulations were carried out in a rectangular box in which three fill-levels and up to 15 blade revolutions were used. Blade forces were observed to have a direct relationship

Abstract The void content of aggregates (VCoA) considerably influences the mechanical response of asphalt concrete; the rapid prediction of VCoA can aid in designing high-performance concrete. To predict VCoA, the size and shape parameters of aggregate particles are measured using image analysis processing, and the results are used as inputs in a neural network model. Void content data is non-linear

Abstract Herein, high strength Al-Zn(-Mg) alloy designated as AA7068 based composites containing twin unlike dispersoids of ZrO2p and Grp were synthesized through an enhanced stir-squeeze caster. The density of the casted materials accompanying porosity was investigated through the liquid displacement technique following the Archimedes principle. Mechanical behavior, such as hardness, impact toughness

Abstract Gas-solid fluidized bed is an effective dry method for beneficiation of −6mm fine coal, belonging to Geldart D particle. Due to the density difference of concentrates and gangue in the raw coal, the bed can remove gangue through segregation of binary particles. The core problem is how to reduce the bubble coalescence and improve segregation degree in the bed. In this study, glass beads and

Abstract Talc processing starts with grinding followed by flotation. The flotation feed preparation significantly affects the concentrate quality. In this study, the preparation of talc flotation feed by grinding was investigated in the absence and presence of sodium dodecyl sulfonate (SDS), one of the well-known flotation reagents. The natural floatability of talc was compared to its floatability

Abstract This paper studies the influencing factors on the magnetic material (nickel-phosphorus coated SKD11 steel) polishing process were determined by investigating the distribution of magnetic iron (MIGs) and abrasive grains (AGs) in the working surface of magnetic liquid slurry (MLS). The influence of the factors, namely the diameters of the MIGs and the AGs and working distance (K), on the polishing

Abstract Predicting the performance of finely atomized sprays used for airborne dust suppression is an important aspect in ensuring workers are properly protected from harmful dust emissions in the industries that rely on bulk materials handling and processing. It is well known that finely atomized sprays are effective for airborne dust capture, however there is less understanding of the best methods

Abstract A horizontal double-tube counter-flow heat exchanger with and without twisted tape inserts (twist ratio of 3.2, 4, and 6) has been investigated experimentally using TiO2-H2O nanofluid. In this study, the heat transfer coefficient and friction factor of turbulent flow of TiO2-H2O nanofluid have been determined for Reynolds’ number varying from 5,000 to 25,000. Convective heat transfer coefficient

Abstract Advances in instrumentation have enabled researchers to understand aerosol processes at microscopic levels. Besides the development of instruments, other aspects like its calibration, interpretation of data, long term accuracy are pivotal. The Electrical Low-Pressure Impactor (ELPI) is one such advanced and relatively recent instrument that is used to measure the number and charge size distribution

Abstract Nickel hollow nanospheres (Ni HNSs) was prepared by solvothermal method using mixture of ethylenediamine (EN) and ethanol (ET), sodium borohydride as reducing agent and nickel chloride hexahydrate as precursor. The particle size of the Ni HNSs were tuned by varying several parameters including precursor concentrations, reaction temperatures (130–190 °C), and ET to EN volume ratios. The particle

Abstract The oil and gas industry produces sulfur as a by-product when the feed constitutes of sulfur compounds. In the sulfur finishing process, two processes are used to convert molten sulfur to solid particles namely granulation and prilling. The prilling process for sulfur involves molten sulfur being pumped into perforated trays and then poured into an agitated water bath dropwise. This is the

Abstract The sphericity and size of ammonium perchlorate (AP) particles are the most significant properties in composite propellants. In this study, using the Taguchi method, the effects of surfactant type, surfactant concentration, stirring speed, cooling rate, and AP concentration parameters were investigated on the sphericity and size of AP particles in the cooling crystallization process (CCP)

Abstract In this work, the effect of water on the packing and flow properties of cohesive powders was experimentally investigated. Two cohesive powders with small particle sizes were studied with weight percentages of added water of 0, 10, 25, 40, and 50%. Particle properties including conditioned bulk density, porosity, compressibility, flow function coefficient, cohesion, etc., were tested using

Abstract Green synthesis methods by plant extracts leads to production of metal nanoparticles without using harsh, toxic, and expensive chemicals commonly used in physical/chemical processes. In this study, silver nanoparticles (AgNPs) were prepared easily, fast, cost-effectively and successfully using aqueous galls extract of Quercus infectoria (Q. infectoria) as a reducing and capping agent. The

Abstract In this study, the influence of ultrasound on the stability of colemanite suspension was first studied without reagents, and the effects of ultrasound power value, treatment regime (batch and continuous), probe immersion depth, and treatment time on the suspension stability were determined. Then, the effects of ultrasound on the flocculation of colemanite with sodium dodecyl sulfate, Aero

Abstract The Computational fluid dynamics (CFD)–discrete element method (DEM) numerical simulation may be applied to predict the hydrodynamic behavior of dense particle–fluid flows. The main drawback of this simulation is the long computational time required owing to the large number of particles and the minute time-step required to maintain a stable solution. In this work, a new method to improve

(2021). Seventh International Conference on Advances in Energy Research (ICAER 2019) – Selected Articles. Particulate Science and Technology: Vol. 39, No. 5, pp. 616-616.

Abstract Structured lipid microparticles (StLMs) composed of oil and solid lipid in specific ratios are drawing significant attention, owing to their stability in loading and controllability in releasing bioactive compounds. In this study, we formulated monodisperse StLMs with palmitic acid or tripalmitin mixed with soybean oil in different ratios using microchannel emulsification (MCE) at ∼70 °C and

Abstract This work describes the fabrication of quantum dot (QD)/silica (SiO2) core–shell particles immobilized with Au nanoparticles and the evaluation of their abilities in fluorescence and x-ray computed tomography (CT) imaging. The QD nanoparticles were coated with silica shells by a sol-gel method using tetraethyl orthosilicate (QD/SiO2). Reduction of Au3+ in a citrate aqueous solution gave an

Abstract Machine learning has revolutionized the way complex problems are solved in engineering. In the current work, machine learning methodology has been applied for predictive modeling of surface roughness generation during machining of Al-Mg based metal matrix composites (MMCs) reinforced with micro boron carbide and multiwalled carbon nanotube particles. Machine learning was used for parameter

Abstract In the present work, the thermal conductivity (TC) of stable water base fly ash and fly ash-Copper (80:20 vol.%) nanofluid was determined experimentally in the temperature range of 30–60 °C for the volume concentration range of 0–4.0%. The two-step method was applied to prepare the nanofluids. The outcomes revealed that the TC of both the nanofluids augmented with the temperature and concentration

Abstract In the present study, silver nanoparticles were synthesized by aqueous extract of Stachys byzantina K. Koch and characterized by various analytical methods. The formation of AgNPs was confirmed by UV–Visible spectroscopy at 441.75 nm. The XRD study affirmed the crystalline structure of AgNPs. The value of zeta potential was −43.9 mV that showed the stability of nanoparticles. The TEM images

Abstract In this study, the effects of quick lime (QL), calcite, and sodium lignosulfonate (SL) powders combined with liquid on granular system were compared. Different loading stresses were used to compare their shear and tensile characteristics. Glass beads (400–600 µm in size) and varying powder-to-liquid contents (from 0% to 5% in mass) as the binder in mixture were used to investigate their shear

Abstract During hydraulic fracturing, conventional spherical proppant particles tend to settle rapidly in a low-viscosity fluid, which results in low permeability and poor supporting performance in the fractures. In this study, we introduce two types of novel nonspherical proppant particles; the transport processes of both the novel and conventional proppants in hydraulic fractures are simulated using

Abstract The impacts of the plastic particles on the vertical electrodes of the free-fall tribo-electrostatic separator (FFTES) is one of the main drawbacks of this separator for sorting millimeter-size particles. The impact on the electrode causes in general a strong reflection of the particles causing the decrease of the separation purity because the particles impacting with the electrode are ejected

Abstract In this study, limestone samples were investigated in terms of grinding product particle size distribution (PSD) differentiations after microwave treatment. Initially, collected limestone samples (a total of 58 sample) were crushed and prepared for microwave treatment. In order to observe the effect of microwave treatment, 58 of these samples were ground directly while the other 58 samples

Abstract Energy efficiency is one of the key criteria for evaluating the performance of an air classifier mill in the aquafeed industry. A pilot-scale air classifier mill was utilized to evaluate the influence of impact velocity, number of hammers, and air mass flow rate on the grinding performance. By measuring the input torque and speed, the input energy of the grinding process was obtained and used

Abstract Iron oxide (Fe2O3) nanoparticles are of great interest compared to their bulk counterpart due to their higher surface area, enhanced possibilities of bio-distribution and high rate of reactivity. In the present work, we report a simple, rapid, and cost-effective method for the synthesis of Fe2O3 nanoparticles based on the aqueous-gaseous phase reaction of iron (III) chloride solution by ammonia

Abstract A mesoporous zincite with a surface area of 10.34 m2 g−1, a pore volume of 0.030 cm3 g−1, and a pore radius of 1.98 nm was prepared using a colloidal dispersion of starch, calcined at 600 °C, and the resulting material was identified as the hexagonal wurtzite phase. The porous colorless zincite (PCZ) was used for the removal of textile dyes (blue and red) and removed 99.87% of blue dye, and

Abstract In this study, the coating of urea granules with a composite shell was performed in a laboratory-scale pan granulator. The composite shell of coated particles consisted of a filler and a binder. Aqueous solutions of sodium silicate, methylcellulose, and polyacrylamide were used as the binders. Powdery calcium carbonate was used as the filler. The influence of the pan rotation speed, the pan-tilt

Abstract The paper presents an experimental study of the triboelectrostatic separation feasibility of two plastic mixtures, high-impact polystyrene (HIPS)/acrylonitrile butadiene styrene (ABS) and high-impact polystyrene (HIPS)/acrylonitrile butadiene styrene-polycarbonate (ABS-PC). To mirror real-world material recovery situations, the mixtures of 1-2 mm granular samples were sourced from Information

Abstract Dust generation and dispersion continue to be a major concern for many in the industries that rely on bulk materials handling, and the ability to predict dust generation and dispersion remains challenging. This study looks at the use of computational fluid dynamics (CFD) and discrete element method (DEM) as a means of predicting dust generation and dispersion. The paper outlines work completed

Abstract In the present study, green synthesis of silver nanoparticles (AgNPs) was performed using flower extracts of Aerva lanata (Al) from Amaranthaceae family. The size, shape, and elemental composition of the silver nanoparticles (AgNPs) was studied using transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), and UV-visible spectroscopy

Abstract This study examined the accuracy of a Lagrangian scheme for simulating both the motion and wall impaction of neutrally buoyant inertial spheres (8.85 ≤ St ≤ 18.04) moving in the subcritical regime (Re = 10,972 and 22,366) of flows past a circular cylinder. The accuracy of the eddy-resolving simulations of the flow field was verified based on available data at nearly comparable flow conditions

Abstract Modified rice flours were obtained by high-impact milling. A factorial design was performed in a planetary ball mill varying rotational speed (450–650 rpm) and milling time (10–40 min) while milling energy (0.3–4.3 kJ/g), particle size distribution (PSD) of rice flour, and changes in starch structure were recorded. The effect of rotational speed and time on milling energy was satisfactorily

Abstract The present hypothesis was to identify the potential of sorafenib tosylate (ST) loaded liposomal dry powder inhaler (ST-LDPI) for targeting non-small cell lung cancer (NSCLC). ST-LDPI was obtained by spray drying the ST loaded liposomes, evaluated for physicochemical properties and in vitro lung deposition by Andersen Cascade Impactor (ACI). Optimized liposomal formulation showed the particle

Abstract Nanoparticles reveal unique properties due to their application in many fields. The easy, eco-friendly, and cost-effective method for synthesis of silver nanoparticles (AgNPs) from the aerial part of Echinacea purpurea (L.) Moench was demonstrated in this work. The synthesized AgNPs were elucidated by Ultraviolet-visible (UV-Vis), Fourier transform infrared (FTIR), X-ray diffraction (XRD)

Abstract The objective of the present research is to evaluate the effect of changing the length of the cylinder and cone such that the total cyclone length remains unaltered. For this purpose, five different cyclone models with increasing lengths of cylindrical section (Hc/D = 0.5, 1.0, 1.5, 2.0, and 2.5) have been considered. A comparison is made among different flow variables as well as the performance

Abstract Dense-phase pneumatic conveying is widely applied in large-scale entrained-bed gasification systems for feeding and conveying pulverized coal into the gasifiers. The discharge stability of blow tanks will affect the conveying process of powders in the conveying pipelines, and ultimately influence the long-term safe and stable operation of the gasifiers. In this paper, aiming at the problem

Abstract In this study, pomegranate peel extract (PPE) was used for the green synthesis of silver nanoparticles (AgNPs). The AgNPs were characterized by X-ray diffraction pattern (XRD) and transmission electron microscopy (TEM). TEM micrograph showed the spherical shape of AgNPs sized between 30 and 50 nm. XRD confirmed the face-centered cubic (FCC) crystalline structure of AgNPs. The antibacterial

Abstract The objective of this study is to synthesize QD-embedded molecularly imprinted membranes (MIMs) with 2-mercaptoethanol-capped manganese-doped zinc sulfide quantum dots (ME-capped Mn-doped ZnS QDs) through chemical precipitation followed by surface molecular imprinting. For the synthesis of the MIMs, the weight of ME-capped Mn-doped ZnS QDs was first manipulated, followed by their characterization

Abstract In this work, a facile and fast green synthesis of highly stable and well-dispersed copper oxide nanoparticles (CuO-NPs) was successfully carried out using aqueous extract of galls of Quercus infectoria (Q. infectoria) as a reducing and capping agent along with ultrasonic irradiation. XRD pattern indicated the formation of the end-centered monoclinic structure of highly pure CuO-NPs with a

Abstract The present article describes a numerical study conducted to investigate particle movement inside a rotating drum under different operating conditions. The discrete element method (DEM) was used in order to describe granular flow dynamics. The effects of the main operating conditions (i.e., rotating speed and fill level) on the dynamic angle of repose were studied. It was found that the dynamic

Abstract Wet granular materials develop both shear stresses and normal stresses during simple shear. Over a certain range of shear rate levels, both the shear stress and the normal stress that develop are linearly proportional to the shear rate. In addition, such materials exhibit permanent increase in volume during simple shear. In this article, a model is developed to capture these features of the

Abstract This paper deals with the influence of different definitions for evaluating the sphericity factor on the prediction of minimum fluidization velocity (U mf) of different agro-industrial/forestry biomass residues and sand. Three biowastes (sawdust, grape marc, and grape stalk) and sand were characterized by sieving, and sphericity was calculated using images obtained by scanning electron microscopy

Abstract Turbulent particle flow is modeled using CFD to predict the erosion rate in the pipe. Anisotropic turbulence of the Reynolds Stress Model (RSM) is used in modeling turbulent fluid (natural gas) and particle (sand) flow through the Eulerian-Lagrangian equations. Since RSM can simulate the effects of anisotropy and flow history, it can better predict the behavior of particles that are dependent

Abstract The angularity of the coarse aggregate (CA) affects the performance of the concrete. A digital microscope is used to obtain three-dimensional contour data points on the surface of a CA and thus improve the effectiveness of the evaluation of the angularity of the CA. Three methods of characterizing the angularity of the CA, namely applying a fitted ellipsoid model (AIf), steradian model (AIc)

Abstract The nanocomposite of WO3/Fe3O4 was prepared using a facile precipitation method and characterized by several techniques. XRD patterns showed a magnetite and a monoclinic structure, respectively, for Fe3O4 and WO3 particles. Formation of WO3/Fe3O4 nanocomposite proved using EDX spectra and also EDX element maps indicated the uniform distribution of Fe, W, and O atoms in the prepared nanocomposite

Abstract Properties, such as morphology, particle size, and hardness affect the ability of a powder to flow and bond to a surface in additive manufacturing (AM) applications. The effects of high energy ball milling on spherical copper and stainless steel powders were evaluated. Morphology of both stainless steel and copper powders, quantifiable by aspect ratio, showed larger changes due to ball-to-powder

Abstract Properties, such as morphology, particle size, and hardness affect the ability of a powder to flow and bond to a surface in additive manufacturing (AM) applications. The effects of high energy ball milling on spherical copper and stainless steel powders were evaluated. Morphology of both stainless steel and copper powders, quantifiable by aspect ratio, showed larger changes due to ball-to-powder