CaO‐based adsorbent pellets from limestone and carbide slag powder were prepared by an extrusion–spheronization method. Three types of binder and peptizer materials were introduced to improve the adsorption performance and mechanical properties of adsorbent pellets. Weibull statistics was employed to analyze the compressive stress of adsorbent pellets. The results revealed that pseudo‐boehmite and

Analyzing the effects of feed characteristics and membrane transport properties are important for designing the industrial‐scale pervaporative desulfurization plants. In this study, a new method to analyze the effects of feed composition and membrane characteristics has been proposed, where these properties are represented by average vapor pressure and average permeance coefficient. Spiral wound module

This work is intended to investigate the molecular interactions and transport properties of five pseudo‐binary mixtures of various combinations of vegetable oils (sesame oil and sunflower oil) and organic extractants (Aliquat 336, TBP, D2EHPA and TOA) by determining their surface tension, density and viscosity over a temperature range of 25–60°C at atmospheric pressure. The experimental data are fitted

The primary intent of this article is to explicate the development of an efficient control strategy to enhance the automated drug infusion technique and thereby, regulating the mean arterial blood pressure (MABP) in both surgical and post‐surgical clinical scenarios. To simplify the already existing design techniques that are mathematically very complicated, a governed drug management system is required

Mature hydrogen producing technologies like steam methane reforming, coal combustion, and hydrogenation of hydrocarbons are leading emitters of greenhouse gases into the atmosphere. Catalytic decomposition of methane into carbon and hydrogen is a sure way of controlling the net emission of this greenhouse gas into the atmosphere. In this study, we present an environmentally benign approach of producing

We proposed a personalized bolus advisor for patients with type 1 diabetes (T1D). A bolus advisor is a decision support system that recommends insulin doses based on an open‐loop model‐based optimization. To construct the bolus advisor, the optimal open‐loop control of blood glucose (BG) concentration in T1D patients was represented as a multi‐objective optimization problem. The insulin types, doses

The natural gas produced from gas wells contains a lot of fine gravel impurities, which causes the blockage of precision pressure regulating equipment and metering equipment. Cyclone separator is widely used in the field of natural gas surface sand removal because of its simple structure and high separation efficiency. In the field application of traditional cyclone separators, there are some problems

The demand for bauxite has increased sharply due to the fast development of alumina industry, so new technology must be developed to take full advantage of nontraditional bauxite resources to realize a continuous supply of bauxite. In this experiment, anatase sulfuric acid leaching liquor is taken as the research object to conduct aluminum–iron separation and high‐purity alumina preparation. The leaching

The shear layer is a region between the internal and external recirculating zone of the flame, which is critical for combustion stabilization and emission. This study experimentally studied the effects of oxyfuel (CO2/O2) shear layer injections on combustion dynamics and pollutant emissions of a model gas turbine combustor. To evaluate the damping performances of ‘Oxy’ CO2/O2 shear layer jets on unsteady

With the extensive use of internal combustion engines, the large volume of lubricant consumption has become an urgent problem. In this study, a new adsorbent of modified sawdust (MS) was used to clean the waste diesel engine lubricant and prepared into a pure biomass oil filter (PBF) for the actual operation of buses. The characterization results of sawdust showed that the crystallinity index of MS

The “coordinative effect” was discovered in MEA + DEA bi‐solvents already, and it enhances both CO2 absorption and desorption within MEA + RR'NH simultaneously. A recent study verified strong coordinative effects within MEA + BEA (RR'NH) + AMP tri‐solvents, but whether the coordination was 100% attributed to interaction of MEA + BEA needs to be confirmed. This study investigated the “coordinative effect”

Aiming to utilize CO2 and solid waste form coal chemical industry synchronously, we proposed a novel process which integrated CO2 mineral carbonation and utilization of gasification slags based on chemical looping. With NH4Cl as the loop chemical, which generated HCl and NH3 through pyrolysis, the aluminum, calcium, and so forth were extracted by HCl from the coal slag, and CO2 was mineralized by calcium

The crude oil extracted from milk thistle seeds was employed as a precursor for creating biodiesel (BD) via the cosolvent esterification–transesterification process. The high acid value of the extracted oil (11.90 mg KOH/g) encouraged its pre‐esterification in the occurrence of hexane as a cosolvent. The cosolvent esterification of oil diminished its acidity index to below 2.0 mg KOH/g using 1.5:1

Graphene oxide (GO)‐based hydrogel beads were synthesized by physical crosslinking of GO with carboxymethyl cellulose (CMC) to produce a pH‐sensitive drug carrier with selective drug‐release properties. Four different GO/CMC composite hydrogel beads (GCB) were prepared with GO oxidized at 30°C and 5q0°C with varying GO loading 1 or 5 mg/ml. Physicochemical properties of the synthesized GO and its composite

No abstract is available for this article.

During the operation of entrained‐flow gasifiers, the ash deposits located on the wall tubes in the radiant syngas coolers (RSC) reduce the heat transfer efficiency. Syngas sootblowing is an effective method to remove the slag deposits in the RSC. In this study, a 3D numerical model was developed by combining the cohesive zone method (CZM) and the coupled Eulerian–Lagrangian analysis to investigate

Ash fusion characteristics including ash properties and morphological changes in high‐temperature fusion test were studied among four types of fuels comprising two woody biomass, three straw biomass, two bituminous coals, and three biomass/coal mixtures. On the basis of ash fusion behavior and kinetic analysis of the ash melting process, a high‐precision acquisition method for ash fusion temperatures

Medium–low‐temperature coal tar pitch (MLP) is a by‐product of semi‐coke fabrication with a high content of carbon. However, the small amount of aromatic organic compounds in MLP makes prevents its practical use as a feedstock for the production of high‐quality artificial carbon materials (such as needle coke) via direct thermal conversion. To understand the effects of autogenous pressure thermal polymerization

A facile, rapid, and energy‐saving gel‐like‐solid method was applied to prepare zeolites from natural minerals. Using potassic rocks (PRs) activated by the alkali fusion decomposition method together with silica‐alumina xerogel as silicon‐ and aluminum‐species, zeolite P has been successfully synthesized via gel‐like‐solid phase method. The effects of crystallization time (t), crystallization temperature

The mercury intrusion test was conducted with an automatic mercury porosimeter, and the pore characteristics of five types of aggregates commonly used in road construction were analyzed using mercury injection data obtained under different pressures. The amount of asphalt that infiltrated the aggregate pores under an asphalt–aggregate ratio of 4% was experimentally and numerically determined, and the

The feasibility and performance of continuous hydrogen production from herbal wastewater via anaerobic fermentation was investigated at different organic loading rates (OLRs) (from 12 to 96 kg chemical oxygen demand [COD]·L−1·day−1) in diatomite‐immobilized sludge reactor and suspended sludge reactor. Results indicated that the diatomite‐immobilized sludge reactor presented more efficient and stable

Highly efficient separation of benzene, toluene, and xylenes (BTXs) from pyrolysis gasoline is very important in petrochemical industries. Though the extractive distillation (ED) process is simpler and consumes less energy compared with liquid–liquid extraction process, it is difficult for a single solvent, for example, sulfolane, to achieve both high purity and high yield of BTXs. In this work, methylsulfonylethane

For achieving the strengthened low‐NOx combustion plus high burnout in W‐shaped flame furnaces, a cascade‐arch low‐NOx and high‐burnout configuration (CLHC) is realized by positioning two burner layers in a 600 MWe furnace. The gas/particle flow, combustion, and NOx emission characteristics in the furnace are numerically evaluated at four upper/lower furnace depth ratios of CW = 0.458, 0.500, 0.529

This study explores the mechanistic issues of ultrasound‐assisted interesterification through identification of links between physics and chemistry of the process. Notably, the interesterification reactions have been carried out using blended feedstock of non‐edible oils—keeping in view requirements for large‐scale processes. The reaction system consisted of blended non‐edible oils, methyl acetate

Low blood pressure drop is an important performance characteristic of a hollow‐fiber membrane oxygenator (HFMO). While the application of natural blood corresponds to complex handling procedures, the in vitro investigation of liquid pressure drop is mainly done using water or similar fluids (e.g., normal saline solution [NSS]). In this study, a comprehensive phenomenological model has been proposed

The ash‐related issues hinder the safe utilization of Zhundong coal, closely relevant to its ash compositions. Previous studies mainly focused on the experimental methods and the selection of ash composition benchmark was restricted to a specific coal sample with limited element types, ignoring the comprehensive elemental interaction. Here, the impacts of eight compositions on ash fusion and crystal

The optical texture of coke is undoubtedly one of the important factors that determined many properties of coke, but it still mostly depends on the skills and experience of manual analysis. In this paper, a novel automatic measurement method is proposed for coke optical texture. this method through two analyzer angle images(10° and 170°) under polarizing microscope to recognize isochromatic regions

A systematic design and optimization method for vinyl acetate/acetic acid/acetic anhydride ternary system separation processes is proposed. Herein, four separation schemes including the conventional distillation, the inter‐column mechanical vapor recompression heat pump distillation (IMVRHP), the double mechanical vapor recompression heat pumps distillation (DMVRHPs), and DMVRHPs with heat exchange

Nano‐Ni1Co1Ox spinel catalysts were prepared via a coprecipitation method, followed by calcination in different atmospheres (air, CO air, N2, and static air flow) tested CO oxidation in air. The calcination of basic cobalt‐nickel precursor in CO air mixture flow (4.5 vol.%) led to the formation of nano‐Ni1Co1Ox spinel with highest specific surface area, smallest crystallite size, porous, and well‐dispersed

In paper industries, Multiple Stage Evaporator (MSE) is used to concentrate black liquor. Due to the energy intensive nature of MSE, the global energy scenario stresses on optimizing its energy efficiency. Moreover, the necessity of a tight control of product quality demands superior understanding of system dynamics for controller design. This paper presents a robust fractional‐order Proportional–Integral–Derivative

Hydroprocessing of vegetable oil to high‐quality jet fuel range hydrocarbons (HRJ) plays a significant role in the development of completely interchangeable substitute for conventional petroleum‐derived jet fuel and has drawn the attention of aviation experts due to its capacity to mitigate greenhouse gas emissions associated with the aviation industry. The limited performance of 1 wt. % Sn promoted

No abstract is available for this article.

To reduce greenhouse gas emissions, biomass fuels are used to gradually replace fossil fuels in the sintering process. Unfortunately, the sinter quality will deteriorate sharply due to too fast combustion rate when using biomass fuels. To address this problem, pregranulation proved to be an effective method. In this study, the pilot‐scale sinter pot tests were carried out to study the effect of coating

Densities of pure distilled water, tetra butyl ammonium bromide glycerol{[TBAB][Gly]}, and different concentration of aqueous bisphenol A (aq. BPA) (i.e., 25, 50, 75, and 100 ppm) were measured at different temperatures from 293.15–343.15 K. Further, densities of the pseudo binary mixtures of aq. BPA and {[TBAB][Gly]} over the entire mole fraction were measured at different temperatures from 293.15–343

Ultra‐supercritical double‐reheat technology, as one of the most advanced coal‐fired power generation technology, is an important direction for emission reduction and energy saving in the world. In this study, the numerical calculation was executed in a 660‐MW ultra‐supercritical double‐reheat tower‐type boiler under deep‐air‐staging conditions. The refined HCN oxidation model was adopted to substitute

Effective control of a blast furnace (BF) process requires accurate estimates of key process indicators (KPIs), namely, productivity, coke rate, direct reduction per cent, adiabatic flame temperature, bosh gas volume and top gas utilization. Some of these KPIs are obtained directly from the measurements, and some are derived by carrying out material and energy balances on measurements of different

Due to the large amounts of CO pollutant from iron ore sintering and vehicle emissions, the control of CO emission becomes more and more important for the environment. To control the emission of CO more effectively, the catalysts of LaMnO3 perovskite with HZSM‐5 zeolite as support were prepared by sol–gel method. The structure and catalytic activities of catalysts were characterized and analyzed. According

Compared with the compressor, the ejector is a novel cost‐effective device to pressurize gas. Taking the regeneration natural gas pressurization process in the molecular sieve dehydration system as an example, it is first proposed to replace the compressor with an ejector to accomplish the pressurized recovery of low‐pressure regeneration natural gas. The numerical simulation method has been validated

In this study, a biodegradable alternative to synthetic plastics was explored, where gelatinized corn starch was blended with polyvinyl alcohol (PVA) using the solution casting method at different ratios. Tensile tests showed that films made of only starch exhibited the lowest tensile strength at 3.66 MPa, which increased as the ratio of PVA in the blend was raised. The water vapor transmission rate

The present study describes the unsteady mixed convection nanofluid flow past a vertical shrinking porous surface in occurrence of slips and heat source/sink. Applying proper transformations, the foremost differential equations which are partial in nature are changed into non‐linear differential equations which are ordinary in nature. With the support of Runge–Kutta method, shooting technique is used

Worldwide chemical industries are concerned towards pollution‐free and green processes. In this regard, alternative energy resource having minimal pollutant and toxins emission would be preferred. Jatropha curcas (JCO) is one of the important and alternative feedstock for biodiesel production. In the present work, JCO with higher (5.5%) free fatty acid (FFA) was used for transesterification using K–Mg

Coal water slurry technology and gasification technology are used to simultaneously treat wastewater and CO2; coal water slurry is prepared from fixed‐bed coal gasification wastewater; and then, thermogravimetric analysis, Fourier‐transform infrared spectrometry, scanning electron microscopy, energy‐dispersive spectrometry, and X‐ray diffraction are used to analyze the characteristic parameters of

In the adaptability of a proposed cascade‐scrubbing technology used for ocean ships, ASPEN PLUS desulfurization simulations for a packing scrubber of a 10 000‐kW large‐scale marine diesel engine were performed to uncover effects of the scrubber's configurational parameters (i.e., scrubber diameter, spherical packing diameter, and packing thickness) and meanwhile confirm the selected parameters' availability

The investigation of the wet coal flow characteristics is carried out in a three‐dimensional silo system by experiments and simulations. The effect of the moisture content on the flow characteristics is firstly investigated by experiments, which is in terms of bulk density, angle of repose, and flow rate at outlet. When moisture content is below 9%, the coal particles act as the easy flow mode. When

Oil sludge (OS) is a typical dangerous waste in petroleum industry, which also contains abundant energy. The purpose of this study was to recover resources from OS gasification. To figure out the gasification process, a thermal analyzer was used to carry out OS gasification experiments under steam/nitrogen atmosphere with different heating rates. Results showed that the OS gasification reaction could

Deodorisation is the key process to produce high‐quality refined, bleached and deodorised palm oil (RBDPO) in a palm oil refinery. In this work, an integrated simulation–optimisation approach was adopted for the analysis of a deodorisation process in an operating palm oil refinery. The process includes a deodoriser unit that removes free fatty acids (FFA) from bleached palm oil (BPO), and a vacuum

This study explored the feasibility of applying sequential argon‐CF4 plasmas treatment as a featured approach towards enhancement of polyvinylidene fluoride (PVDF) membrane structure and surface topography for application in membrane distillation (MD). Systematic procedures were conducted to synthesize membranes of different combinations composed mainly from PVDF and assisted by addition of polyvinylpyrrolidone

Ethyl acetate is one of typical volatile organic compounds (VOCs) emitting from solvent use, and removing ethyl acetate from exhaust air is vital to VOCs abatement. The mesoporous manganese oxide (MnOx) samples were sonochemically synthesized by the reduction of KMnO4 using Mn(NO3)2. The characterization shows that γ‐MnO2, β‐MnO2, and bixbyite‐like Mn2O3 were obtained by calcining the MnOx samples

The additive drag reduction technology has wide application and high economic value in drag reduction of oilfield water injection system. With CTAC/NaSal (cetyltrimethyl ammonium chloride/sodium salicylate) aqueous solution as the research object, this paper explores the effects of oilfield water component on its rheological characteristics under the experimental condition of 10–60°C, .1–1 000 s−1

The jet microbubble generator is often used to produce bubbles in flotation equipment, which generates microbubbles by self‐absorbing or inflating. Bubble behavior is a dominant factor in froth flotation, and its velocity, size, and distribution greatly affect flotation performance. However, the asymmetry distribution of the pressure, bubble velocity, and gas holdup in generator with single inlet probably

A new type of cigarette butts/coal‐based composite porous carbon was prepared by potassium hydroxide chemical activation method and used for methane decomposition to hydrogen. The effects of mass mixing ratio of the used cigarette butts/coal and carbonization temperature on the surface properties and structure of carbon materials were studied. The results show that the optimal mass mixing ratio of

The recycling of chemical containing glass bottles is generally not recommended due to high health risk. In this study, used glass ampoules were devitrified into a porous material by coprocessing with eggshells, salt, and soda at different temperatures. In this thermochemical reaction, eggshells decomposed into calcium, porogenic gases, and char. The calcium worked as a flux in the reaction while char

In this work, the mass transfer performance of a new eductor liquid–liquid extractor is investigated experimentally and modeled by dimensional analysis and response surface methodology (RSM) with the utilization of water/acetic acid/toluene system. A correlation is derived for the overall mass transfer coefficient versus the Reynolds number, throat to nozzle area ratio, projection ratio, and the two

Polydopamine (PDA) was coated on poly(vinylidene fluoride) (PVDF) membranes with different structures to select the most suitable structure for achieving outstanding hydrophilicity, permeability, stability, and antifouling properties. PVDF membranes were prepared with different solvents (N‐methyl‐2‐pyrrolidone [NMP], N,N‐dimethylacetamide [DMAc], N,N‐dimethylformamide [DMF], NMP/DMAc, NMP/DMF, DMAc/DMF

No abstract is available for this article.

The Ti–Mn cladding layers with different ratios were prepared on the surface of 310S steel using tungsten inert gas (TIG) technology for inhibiting coking in ethylene cracking, and the cladding specimens were oxidized by muffle furnace for 10 h at 800°C. The coking evaluation tests of the oxidized specimens with different Ti–Mn powder ratios were carried out with light naphtha at 850°C. The results

Output saturation is observed in many chemical processes and microbial cultivation processes. In these processes, output saturation can cause a number of control problems near the saturation point due to the nonlinear continuous input multiplicity interval after the saturation point. In general, the widely used proportional‐integral‐derivative (PID) controller cannot perform its function due to the

Different schemes in the production of structured triglycerides based on solvent‐free esterification of oleic acid and palmitic acid with glycerol were evaluated in terms of reactant conversion, product composition, and yield. Two‐step processes, with or without glycerol dosing, were compared with one‐step versions carried out at temperature conditions within 40°C–60°C to a final oleic acid/palmitic

During the working process of passive microdirect methanol fuel cell (μDMFC), the characteristics of inverse movement between two‐phase substances are quite distinct from macro gas–liquid inverse movement, including electrochemical reactions, electrical drag, multicomponent diffusion, evaporation, and condensation. Due to the complexity of internal operation system of μDMFC, it is difficult to monitor

In coal‐fired power plants, the feed water treatment processes (FWTPs) supply qualified water to utility boilers. The faults of an FWTP may endanger the whole power plant. The classical PCA‐/KPCA‐based fault detection algorithms are valid mainly under single operation condition. When they are put to a practical FWTP, they cannot deal with the problems as treatment route switching, multiple operation