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ChemEngineering, Volume 10, Issue 3

2026 March - 11 articles

Cover Story: Scaling up the hydrogen economy requires flexible purification solutions capable of handling variable feed conditions. This study presents an optimization framework coupling particle swarm optimization (PSO) with the open-source dynamic PSA simulator toPSAil to tune step times in a 12-step, 4-bed pressure swing adsorption process across four representative hydrogen–methane feed scenarios. The algorithm converged within 25–30 iterations for all cases, achieving hydrogen purity above 99.1% with over 80% recovery—including fuel cell quality (99.7%) output in two scenarios. The results demonstrate that PSO-based step-time optimization is a viable method for designing adaptive hydrogen purification strategies under conditions characteristic of underground storage recovery. View this paper
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Articles (11)

  • Article
  • Open Access
1,283 Views
13 Pages

Metal-free electrodes are essential to promote electrochemical reactions, the core of sustainable energy resources. In search of better carbon-based electrode materials, we have explored several spatial arrangements of boron (B) within proximity in t...

(This article belongs to the Special Issue Development of Devices for Electrochemical Energy Storage and Generation)
  • Article
  • Open Access
1,350 Views
19 Pages

Pressure swing adsorption (PSA) is a viable method for separating hydrogen from gas mixtures, an important aspect of long-term hydrogen storage in depleted gas fields. This study explores optimizing a 12-step PSA process for recovering high-purity hy...

  • Review
  • Open Access
2 Citations
2,657 Views
55 Pages

Application, Challenges and Perspectives of Catalysts Applied in Power-to-X Technology to Produce Hydrogen-Derived Vectors for Energy Transition

  • María Lorena Malagón-Quinto,
  • Hilda Elizabeth Reynel-Ávila,
  • Didilia Ileana Mendoza-Castillo,
  • Adrián Bonilla-Petriciolet,
  • Norma Aurea Rangel-Vázquez,
  • Gloria Sandoval-Flores and
  • Sarah Essam

This review analyzes the catalytic routes for the Power-to-X (PtX) conversion of hydrogen to methane, methanol, ammonia, formic acid, and synthetic hydrocarbon fuels. The key reactive synthesis technologies and catalysts for each vector are described...

  • Article
  • Open Access
1,107 Views
14 Pages

Numerical Study on the Staged SCR Catalyst for Marine Exhaust After-Treatment

  • Kyungbin Park,
  • Hyeonseok Im,
  • Gyu Ryeol Baek and
  • Mino Woo

This study numerically investigates the NO removal performance of a staged catalyst substrate employed in an industrial marine after-treatment system. The computational domain is based on the lab-scale experimental device used for measuring pressure...

  • Article
  • Open Access
2,186 Views
22 Pages

Paint manufacturing wastewater contains complex mixtures of solvents, resins, surfactants, pigments, and polymeric additives that result in high chemical oxygen demand (COD), toxicity, and poor biodegradability. Conventional physicochemical treatment...

  • Article
  • Open Access
703 Views
14 Pages

This study investigates the fatigue failure of fiber-reinforced rubber used in automotive shock-absorbing elements subjected to cyclic loads. A quantitative simulation model integrated with material analysis to predict the service life and performanc...

  • Review
  • Open Access
1 Citations
4,396 Views
25 Pages

Friedel–Crafts: A Key Step in the Synthesis of Pharmaceutical Compounds

  • Konstantinos Anthopoulos,
  • Stefanos Michailidis,
  • Zafeiro Thomaidou,
  • Lydia Vogiatzaki and
  • Nikolaos C. Kokkinos

This comprehensive review provides a consolidated and practically oriented overview of the Friedel–Crafts reaction in pharmaceutical synthesis, bringing together data from 93 peer-reviewed studies published between 1962 and 2025. Through a stru...

  • Article
  • Open Access
1 Citations
1,883 Views
16 Pages

Machine Learning (ML) Modeling of CO2 Liquid–Vapour Equilibrium (LVE) Absorption in Amine Aqueous Solutions

  • Timur-Vasile Chis,
  • Monica Tegledi,
  • Laurentiu Prodea,
  • Alina Maria Faladau,
  • Sadigov Murat,
  • Mammadov Elmir,
  • Anamaria Niculescu,
  • Iolanda Popa and
  • Tiberiu Sandu

Predicting CO2 absorption behavior in aqueous amine systems is a critical challenge for optimizing carbon capture technologies. This research develops a high-precision Artificial Neural Network (ANN) to simulate equilibrium data across various amine...

(This article belongs to the Special Issue AI-Driven Digital Twin for Process Safety in Chemical Engineering)
  • Review
  • Open Access
4 Citations
2,737 Views
36 Pages

The intermittency of renewable-based power is a major barrier for long-term supply of clean energy, which necessitates the development of reliable solutions for clean energy storage and transition towards a carbon-neutral economy. Although hydrogen h...

(This article belongs to the Special Issue Development of Devices for Electrochemical Energy Storage and Generation)
  • Article
  • Open Access
1 Citations
2,526 Views
26 Pages

While Saccharomyces cerevisiae (baker’s yeast) offers a safe, non-animal source of chitin-glucan (CG), its potential as a functional cosmetic ingredient has been overshadowed by industrial sources like Aspergillus niger. This study advances the...

  • Article
  • Open Access
1 Citations
1,070 Views
16 Pages

Frequencies, Velocities, and Spacing of Interfacial Waves of Falling Liquid Films in a Large Diameter Vertical Pipe

  • Abbas H Hasan,
  • Shara K Mohammed,
  • Buddhika Hewakandamby,
  • Faiza Saidj,
  • Abdelwahid Azzi and
  • Barry James Azzopardi

Many of the film thickness measurements that have been reported in the literature tend to focus on small pipe diameters, which may not be practical for a variety of industrial applications. Additionally, single-point measurements are unable to provid...

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ChemEngineering - ISSN 2305-7084