Despite rising concern with climate change, carbon capture is yet to be implemented widely in the industry due to its size and cost. The rotating packed bed (RPB), a high gravity technology process, has been suggested to intensify the conventional packed bed. In this study, rigorous models of the RPB absorber and stripper for carbon capture are developed and implemented in the commercial simulator

An algorithm is proposed that combines nonlinear feature generation and sparse regression to learn interpretable nonlinear models from noisy and limited data. This Algebraic Learning Via Elastic Net for Static and Dynamic Nonlinear Model Identification algorithm employs automated feature generation including families of ubiquitous chemical and biological nonlinear transformations. ALVEN balances model

The aim of the present work was to prepare SiOxCyHz coatings in capacitively-coupled RF glow discharge from gaseous mixture of trimethylsilyl acetate (TMSAc) monomer and oxygen. The properties of deposited coatings have been investigated using several characterization methods. The presented study proves that properties of TMSAc-based thin films are significantly dependent on the monomer ratio in TMSAc/O2

In the current study, a self-healing coating was prepared by the synthesis of an absorbent copolymeric gel on the surfaces of titanium dioxide (TiO2) and its incorporation into epoxy resin. The preparation of the nanogel composite occurred in two steps; firstly, by using 3-(triethoxysilyl) propyl methacrylate (MPS) and then by the absorbent acrylamide (AAm) and acrylic acid (AA) copolymeric gel. The

A pilot-scale biological pre-treatment reactor filled with porous polyurethanes carriers (BioNET) was operated over 500 days under different hydraulic retention times (HRT) (1.3 to 0.5 hours) to evaluate the feasibility and efficiency of ammonia removal for a slightly contaminated source water. Under 0.5 hour HRT, 84% nitrification efficiency and 0.42 kg-N/m3/day ammonia removal rate could be achieved

Catalyst deactivation by carbon deposition is an important phenomenon of catalytic industrial processes, which will lead to the decrease of reaction rates and even the blockage of the reactor. In this work, coke deposition process is investigated by means of a particle-resolved CFD model considering the change of catalyst physical property and activity caused by carbon formation. The spatial and instantaneous

Integration of reaction and separation is attractive in production of biobased oligomers and short polymers from polysaccharides and proteins via catalytic degradation. The challenge lies in controlling the molar mass distribution. Theoretical analysis for process integration is performed for conventional CSTR, a multifunctional reactor, and reactor-separator-recycle processes. Closed-form solutions

Chemical looping with oxygen uncoupling (CLOU) and chemical looping air separation (CLAS) are novel and potentially promising processes for the combustion of solid fuels (e.g. biomass) for power generation with inherent CO2 capture. Redox-experiments at 850–950 °C confirmed that copper manganese spinel oxides are promising oxygen carriers for these processes, as they combine a relatively high O2 release

Polysiloxane is one of the most favorite polymeric materials used in the emerging field of passive surface icephobicity; This is due to its tailorable softness, hydrophobicity, and relatively high durability. Given the state-of-the-art ice adhesion strength of polysiloxane surfaces has reached a threshold below 1 kPa, a timely survey on the published polysiloxane icephobic surfaces can serve as a valuable

In this work, clinochrysotile-like magnesium silicate nanotubes (MS-TNs) were fabricated by a hydrothermal method and then modified with dodecyltrimethoxysilane (DTMS) for the first time to act as a superhydrophobic material (MS-TNs/DTMS), whilst the MS-TNs was used as a nanocontainer to load a corrosion inhibitor 2-mercaptabenzimidazole (2-MBI). Taking the advantage of epoxy resin as a coating matrix

Injection of water containing dissolved chemical components is one of the most important enhanced oil recovery (EOR) techniques. This problem can be modeled by an (n+1)×(n+1) system of hyperbolic partial differential equations representing the conservation of water and chemical components. In this paper we present the solution to the problem of oil displacement by a water slug containing n dissolved

Anaerobic digestion has historically shown critical operational limitations for treating industrial wastewater. Our work aims to evaluate the resilience capacity of a novel concept so-called microbial electrochemical fluidized bed reactor (ME-FBR) for treating real brewery wastewater under continuous operation mode over one year period. All assays were run in parallel using a conventional anaerobic

Closed-loop field development (CLFD) is an exhaustive combination of multidisciplinary tasks to use frequently acquired data for optimizing a pre-defined objective function of the field development plan (FDP). Although new information is bound to decrease the uncertainty around field development, previous studies have shown that CLFD could fail for several theoretical reasons. In this work, a risk-informed

Shale hydration and dispersion leading to wellbore instability is always a challenge in oil and gas drilling engineering. In this study, specifically designed nano-particles by grafting hyperbranched polyethyleneimine (Mw = 600) onto the surface of nano-silica particles were synthesized. The modified nano-particles were characterized with Fourier transform infrared spectrum (FT-IR), particles size

The development of tight gas reservoirs within the Ordos basin is closely related to the tectonic evolution. In this study, homogenization temperature of aqueous inclusions and the burial and thermal history of single well were combined to determine the tight gas charging time in the Permian Lower Shihezi sandstones in the Hangjinqi area, northern Ordos Basin. The paleo-structural characteristics and

The formation sands of natural gas hydrate (NGH) reservoirs in the South China Sea are fine silty sands with a high content of clay, and it is difficult to be controlled effectively. We carried out a series of experiments to investigate the microcosmic retaining and plugging behavior of screen media with highly argillaceous fine sand samples, with median size of 10.13 μm. The screen sand-retention

The permeability measurement of marine natural sediments is helpful to evaluate the characteristics of seawater immersion in the sediment layer and the difficulty of upward escape of gas below the sediments. In this work, the stress on the natural sediments in the Shenhu Area of the South China Sea with different buried depths was simulated by confining pressure. The effective gas permeability of natural

Due to harsh environment in the cutting area, access to the cutting region is still limited for the existing temperature sensors. As such, measuring temperature signals remains a challenge for real-time tool wear monitoring. In this paper, a polycrystalline cubic boron nitride (PCBN) cutting tool embedded with thin-film thermocouple (TFTC) was devised and used for tool wear monitoring during the cutting

The existing technical standards for determining the minimum ignition temperature (MIT) of dust clouds are inadequate. According to existing technical standards, this study expands the test pressure conditions. The MIT of dust clouds can be determined by a variety of different dispersion pressures, that is, 0.02, 0.04, 0.06, 0.08 and 0.1 MPa. But, whether the MIT of dust clouds tested under different

Hexagonal boron nitride (h‐BN) exhibits great potential for tribological applications due to its attractive 2D layered structure. In this work, functionalised hexagonal boron nitride (f‐BN) was prepared by ultrasonic exfoliation of pristine h‐BN in water and subsequent hydrothermal modification with sodium oleat. Fourier infrared spectra and X‐ray photoelectron spectra analyses showed that long alkyl‐chains

Membranes are considered promising tools for gas sweetening due to their lower footprint (i.e., area and energy requirement, considering elimination of solvent/absorbent and its associated regeneration procedures), and ease of scale-up. Performing membrane gas separation is strongly dependent on membrane materials. With a 0.38-nm pore size, the SAPO-34 membrane surpasses the upper bond limit for CO2/CH4

A novel Hilbert fractal photo microreactor (PMR) was proposed to investigate the photochemical synthesis of 2,5-hexanedione (2,5-HDN) through direct C-C coupling of acetone in continuous-flow mode. The conventional fluorinated ethylene propylene (FEP) capillary PMR was used for comparison. The flow in the Hilbert fractal PMR was numerically analyzed by Computational Fluid Dynamics (CFD). It was found

Pigments, such as chlorophylls and carotenoids, have important applications in various fields, such as colorants in food, cosmetic or textile industries and in biomedical applications. Both pigments have an important role in the photosynthetic process and can be found in the marine green macroalgae genus Ulva. In this work, an integrated downstream process was developed to extract chlorophylls and

A novel aqueous biphasic system (ABS) composed of acetonitrile and amine solution (MeCN + TEOA) has been constructed by CO2 (1 atm) gas flush process and applied for water purification. The formation process can be approached by various ways, including gas flush, salt addition and pH regulation. The usage of low cost materials in current system provided a feasible way in terms of large scale industrial

Cyrene is an emerging bio-based green solvent that has been shown to have the ability to increase the solubility of hydrophobic substances in water. Even though the water-Cyrene system is an attractive solvent, its applications are hampered by difficulties in the understanding of its solvation mechanism, caused by a delicate chemical equilibrium established between water and Cyrene. This work aims

Different from the traditional uniaxial stretching films, the biaxial stretching films have excellent properties and broad application prospects. In this paper, by adopting simultaneously biaxial stretching (BO) and solid-state shear milling (S3M) technologies, PVDF films with more β phase and homogeneous structure, as well as better comprehensive properties were prepared. The powerful squeezing and

Cl-free Ru/CeO2 spherical catalysts were prepared by incipient wetness impregnation and subsequent washing processes using RuCl3·3H2O and a commercial spherical CeO2 support. Cs addition improved catalytic performance for NH3 decomposition, and the optimal Cs loading was a Cs/Ru molar ratio of 0.43. TEM and SEM-EDX suggested that Cs was present around Ru metal particles and served as an anchor for

Oilfield chemists and engineers have searched a method for intelligent flooding of chemical-intervention-based process with self-regulating mobility in subterranean areas for decades. By designing hydrophilic nanoparticles (ATNPs) and nonionic surfactant laurel monoanolamide (LEMA) molecules with complementary hydrogen bonding functionalities that bind one another at the oil-water interface, we developed

Despite the priority of titanium dioxide (TiO2) as electron transport layers (ETLs) for perovskite solar cells (PSCs), some questions are still needed to be solved to achieve better high-power conversion efficiency (PCE). Herein, TiO2 nanotube (TD-NT) with network structures has been obtained through an inexpensive hydrothermal strategy. The obtained TD-NT has been incorporated in constructing PSCs

A novel, particularly robust method for the calculation of critical curves of fluid mixtures is proposed that makes use of differential equations representing the critical conditions (isochoric thermodynamics formalism). These differential equations are integrated with adaptive numerical integration methods, thus avoiding the convergence problems that so often afflict methods using algebraic equations