Enameled steel chemical reactor equipment. © gen_A@AdobeStock

Addressing climate change necessitates the rapid discovery of efficient CO₂ adsorbents. This review examines the synergistic integration of density functional theory (DFT) and machine learning (ML), emphasizing how their combination accelerates the design, screening, and optimization of solid amine, metalorganic framework (MOF), and calcium-based adsorbents.

The effect of foam mat drying of Syzygium cumini pulp on the efficiency of extraction of anthocyanin was analyzed in this study. Microwave assisted foam drying was found to be the most efficient method resulting in faster drying and higher anthocyanin yield.

Sustainable porous carbon, a waste from the silica production and energy generation.

The present work investigated the biological performance of mixed-flow impellers. To the authors’ knowledge, this is the first experimental study on such impellers in a fermentation process using A. vinelandii, which was chosen as a microorganism due to its high oxygen demand. Results showed that the mixed-flow impellers performed better in high-viscosity media than the Rushton turbines.

This study presents a numerical analysis of liquid jet breakup in rotary atomization. By comparing different boundary conditions and focusing on gas–liquid interactions, the simulation reveals nonlinear instabilities that govern droplet formation. The findings offer insights into breakup behavior beyond the scope of conventional linear theories.

This study presented a superhydrophobic polytetrafluoroethylene hollow fiber membrane (PTFE-HFM) modified with a PDMS/nano-SiO₂ composite coating for high-temperature waste oil purification. By integrating interfacial engineering and thermal stabilization, the membrane achieved tunable hydrophobicity (water contact angle up to 158°) and hierarchical roughness via controlled SiO₂ loading. At 2 wt.% SiO₂, the optimized membrane exhibited exceptional performance: superior high-temperature permeation flux (162.38 L·m⁻²·h⁻¹·bar⁻¹ at 150 °C), and remarkable anti-fouling stability (flux attenuation reduced to 7.35 % over 200 h). The synergistic PDMS/SiO₂ coating enhanced mechanical robustness while maintaining structural integrity under dynamic conditions. The membrane demonstrated efficient separation of water-in-oil emulsions (96.78 % rejection) and sustained operational stability in high-temperature environments, offering a promising solution for industrial oily wastewater treatment.

This study reports the green synthesis of silver nanoparticles (AgNPs) using Cymbopogon citratus (lemon grass) leaf extract. The bio-reduction of Ag⁺ ions was visually confirmed by a color change from light yellow to dark brown and characterized by a distinct surface plasmon resonance (SPR) peak at 447 nm. Various analytical techniques, including FTIR, XRD, SEM, and TEM, confirmed the formation of crystalline, spherical nanoparticles with an average size of 26 nm. The biosynthesized AgNPs exhibited significant antibacterial activity against both gram-positive and gram-negative bacteria, as well as dose-dependent inhibition of α-amylase enzyme, indicating antidiabetic potential. This eco-friendly synthesis approach supports future applications of AgNPs in antimicrobial and therapeutic domains.

This study presents valuable perspectives that can be applied to various sectors, ranging from thermal engineering to nanotechnology and fluid dynamics. The practical implications of these perspectives can enhance HT processes in industries like nuclear power generation, aerospace technology, microfluidics, and manufacturing. Moreover, integrating dissipation and radiative impacts into HNF flow models introduces a fresh outlook on comprehending HT mechanisms, opening doors for progress in related research areas.

The incorporation of Ag-doped Fe₃O₄ nanofluids leads to a marked enhancement in heat transfer performance within compact thermal systems. This work offers insights into how nanoparticle design and synthesis routes can be strategically used to unlock new levels of efficiency in convective heat exchange in enhanced tubes.

This study presents a novel biphasic aqueous solvent system using TETA and TMEDA for energy-efficient post-combustion CO₂ capture. The optimized blend achieved 22% lower regeneration energy and 62% higher cyclic capacity than MEA, with stable performance over multiple cycles and rapid phase separation.

Pore diffusion limitations in Fischer–Tropsch synthesis are typically seen as detrimental due to lower reaction rates. This study shows that they reduce thermal sensitivity and increase reactor stability. A 2D model demonstrates how these limitations enable higher conversions in multi-tubular reactors—turning a drawback into a process advantage.

The aim of this work was to assess for the first time the supercritical fluid extraction (SFE) process feasibility to obtain a CBG-rich extract from Cannabis. Extraction experiments highlighted that CBG can be properly extracted at 18 MPa and 40 °C and the extraction plant scheme affected CBG recovery and purity.

Biodiesel production from renewable sources is now prevailing over the fossil diesel fuel to combat environmental pollution. The use of model predictive tool is vital to monitor copper coupon corrosion rate in biodiesel.

This study explores co-pyrolysis of Tamanu seed (TS) and waste polypropylene (PP) from saline bottles for sustainable energy. Process optimization, product characterization, kinetic modeling (isoconversional and model-fitting methods), thermodynamic analysis, and reaction mechanism evaluation were performed. Synergistic effects improved degradation behavior, oil yield, quality, and composition.

Crystallization-induced diastereomeric transformation (CIDT) was used to separate (S)-ketoprofen-(S)-phenylethylamine salts with high purity. A mixed solvent system and phase diagrams guided the process, while DBU emerged as the best catalyst. The study shows how CIDT, aided by DBU's dual role, offers a method for enantioseparation in pharmaceutical manufacturing.

This study examines multiple-slip effects in a micropolar Williamson hybrid nanofluid influenced by an exponential heat source and inertial drag within a rotating porous medium. By including thermal radiation and medium permeability, the model accounts for velocity and thermal slip and is solved numerically using the Runge–Kutta method.

This article deals with the invention of a reference material representing a bulk material with its main parts, the fine and the coarse fraction. The idea is to use this material to support and improve further research dealing with the prediction of dust emissions when handling coarsely dispersed bulk materials.

CFD analyzes gas-solid flow characteristics in CFB-FGD towers affected by key components including bottom design, diffusion section, and bypass tubes. Two indices (CV value, particle mass-weighted life) evaluate distribution uniformity and residence time. Findings reveal optimization pathways for enhanced flue gas distribution and desulfurization efficiency, offering crucial design insights.

Fuel filters are necessary to prevent damage of the fuel injection system caused by particles and water. To take real operational conditions into the test labs the ISO 19612 is currently in work. The article provides insights of the filtration performance when simulating real-life fuel flow and vibration, highlighting the most dominant influencing parameters.

This study proposes a vapor–aeration (V–A) method to produce fine crystalline particles with a narrow size distribution. The V–A method successfully induced nucleation even under low supersaturation conditions where nucleation was not observed using the conventional method. Furthermore, it produced fine particles with improved size distribution due to its nucleation enhancement.

A new method for separating perfluorodecalin – perfluoro(butylcyclohexane) mixture by heteroazeotropic distillation is proposed. Water is used as a heteroazeotrope-forming agent. This approach allows the isolation of perfluoro(butylcyclohexane) with a purity of more than 0.99 mol.fr. The efficiency of this method is experimentally demonstrated on laboratory and semi-industrial scales.

This work integrates moving bed adsorption and fluidized bed desorption processes in one chemical engineering equipment by using internally recirculating fluidized bed (IRFB) technology. The in-house-developed IRFB prototype uses activated carbon as an adsorbent to continuously remove trichloroethylene (known to be mutagenic and a suspected carcinogen) from gaseous streams.

Ion-exchanged Cu-SSZ-13 catalysts achieve single-site activity via Cu migration from six-membered rings to elliptical cavities. This structural evolution drives synergistic enhancement in methane conversion and methanol selectivity, unlocking efficient methane-to-methanol processes.

Displacement washing improves product quality by removing contaminants from filter cakes, but its efficiency is limited by partial reslurrying of the cake surface, which unintentionally contaminates the wash liquid. This study presents experimental wash curves demonstrating this previously undescribed limitation and introduces the cake reslurry ratio φ to quantify its impact. Process parameters influencing washing outcomes are evaluated, leading to recommendations for optimizing displacement washing.

Discover a sustainable approach to synthesizing copper oxide nanoparticles (CuO NPs) using potato starch as a green reducing and stabilizing agent. This method yields CuO NPs with a 13.92 nm crystallite size, flake-like structures, and a 2.95 eV bandgap, showcasing enhanced photocatalytic and antimicrobial properties. Achieving 99.2 % degradation of Evans Blue dye in 140 min and complete atrazine removal in 160 min, alongside significant inhibition zones (up to 26 mm for bacteria, 14 mm for fungi), these NPs offer a promising, eco-friendly solution for environmental cleanup and antimicrobial applications.

This review article discusses the role of Direct Membrane Filtration (DMF) in up-concentrating municipal wastewater (MWW). DMF is a promising alternative to the conventional aerobic wastewater treatment processes, wherein we can recover energy from MWW. Different membrane module configurations and fouling control strategies are also discussed. Finally, the possibility of treating the up-concentrated wastewater anaerobically is also presented.

At low temperature, Ammonium perchlorate undergoes decomposition and forms ammonium ion and perchlorate ion. Then proton transfer takes place to form NH₃ molecules which are adsorbed on the surface of AP to inhibit the further decomposition process. Catalyst provide the necessary surface area to the NH₃ molecules and relieve AP free to decompose further.

The knowledge about the functionality of atomizers is of fundamental importance for their application. In case of the metal mesh atomizers, the operating principle is highly discussed. This study examines the dependencies, such as volume flow rate, droplet size distribution, and efficiency, on the operating conditions of this type of atomizer and shows the related droplet formation mechanism.

Understanding how each mass balance equation affects the sulfur removal is relevant for proper simulation of HDT reactor. This study uses reactor modeling to assess the individual and combined effects of HDT reaction mass balances on HDS performance, offering insights into inhibition phenomena and hydrogen consumption critical for ULSD production.

This paper summarizes the current development status of radial flow wave rotor technology, with a focus on the research progress of the radial flow wave rotor combustor and top-cycle radial flow wave rotors for ultra-micro gas turbines.

This study present a new structured methodology for improving diesel fuel properties through solvent extraction. Diesel fuel is analyzed using an experimental approach, including solvent selection, extraction, phase separation, and characterization. Optimizing extraction conditions and evaluating fuel quality using Fourier Transform Infrared (FTIR) and Gas Chromatography (GC) techniques.Serves as a guide for systematically designing and executing research on fuel enhancement, the results demonstrating solvent extraction as a viable method for refining diesel fuel properties.

This study develops a novel and reusable wheat-bran-derived adsorbent (DMTD-WB), exhibiting outstanding selectivity and a high removal efficiency of 98.15 % for Ag(I) from a mixed Ag(I)–Cu(II)–Pb(II)–Zn(II)–Ni(II) effluent. The findings provide a sustainable strategy for the simultaneous recovery of silver and the valorization of agricultural waste in environmental remediation.

A machine-learning-based modeling approach that integrates an adaptive immune genetic algorithm with random forest to intelligently select process features as input variables for green ammonia process modeling, and predict green ammonia production yields under different feed loads.

Impact of conductive heating on the thick layer of sawdust pyrolisis is investigated. The conductive heating from the substrate tray accelerates pyrolysis and increases tar and gas yields, whereas a perfectly insulated substrate tray results in a slow heat transfer, delaying temperature stabilization but producing denser, higher yield char.

A novel coupled model integrating MATLAB and Aspen Plus is developed to simulate azelaic acid's cooling-antisolvent crystallization. Overcoming Aspen Plus's limitation in dynamic solubility tracking. Validated via crystal size distribution, this tool accurately captures process dynamics, aiding optimization of antisolvent crystallization for enhanced industrial efficiency.

In this research, a highly efficient and stable catalytic layer loaded with palladium nanoparticles was successfully prepared in a microchannel reactor by layer-by-layer self-assembly and ion exchange–in situ reduction technology. This method achieved an even and stable distribution of the catalyst on the inner wall of the microreactor. Reactant molecules were transferred from the main solution to the catalyst surface through convection and diffusion, enhancing mass transfer and further improving the reaction efficiency.

Water molecules significantly impact methane diffusion in silica by altering diffusion coefficients, activation energy, and pathways. Hydration affects methane mobility and accessibility through hydrate formation within the porous structure.

Physical characteristics, DEM contact and Tavares Breakage parameters were measured for an itabirite iron ore. Comparison of experiments in a laboratory jaw crusher to simulations showed good agreement of throughputs, marginal underpredictions of power, while some overpredicted product fineness.

This study demonstrates highly effective and reusable methylene blue (MB) removal using coal fly ash-derived silica. Over 12 cycles, consistent 97 % MB removal was achieved, surpassing other reported silica adsorbents. This highlights the material's economic potential and promotes sustainable waste repurposing for environmental remediation.

Four types of slow-release NPK fertilizers were prepared by coating granules with pyrolysis oils derived from both bio-based and petroleum-based polymeric waste materials. The functional groups present in these oils played a crucial role in strong chemical interactions with ions of the fertilizer, leading to the formation of porous coatings. This porous structure effectively slowed the release of nutrients. Among the coatings, those made from lignocellulosic feedstocks exhibited improved nitrogen retention and a more controlled release profile. This approach demonstrates how waste streams can be transformed into efficient agricultural inputs, offering an eco-friendly alternative to synthetic coatings and advancing sustainable nutrient management practices.

Through design of experiments, key variables in a persulfate–catalyzed Fenton-like system were optimized for phenolic removal from OMW. Achieving 62.09 % efficiency, the study underscores the value of statistical modeling in wastewater remediation.

A three-staged contactor combining Venturi and cyclone achieves gas-liquid co-current and countercurrent modes by adjusting gas channels. Countercurrent mode, operable at 7.5–17.5 L min⁻¹ liquid flow, outperforms co-current in mass transfer within a critical gas flow range. It features gas self-suction, efficient bubble dispersion, and low gas consumption, offering promising potential for sewage deoxygenation and volatile organic compound separation. This novel design bridges mixing-separation processes, enhancing mass transfer efficiency in chemical engineering.