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ChemEngineering, Volume 7, Issue 2

2023 April - 24 articles

Cover Story: Particle transport is still an immense challenge in many processes today and affects both the operation and the consistency of the product quality, which is essential in the pharmaceutical industry, for example. Therefore, we developed a suspension correlation of particles in the crystallization process for a slug flow crystallizer in the field of small-scale continuous crystallization in this paper to predict and ensure a reproducible process and consistent product quality. For this purpose, already existing dimensionless numbers were evaluated and modified employing force balances in order to predict the particle behavior in the liquid compartments in the slug flow crystallizer under different operating conditions and particle shapes of the substance system l-alanine/water using L-glutamic acid as an impurity during crystallization. View this paper
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Articles (24)

  • Article
  • Open Access
5 Citations
5,097 Views
13 Pages

Kinetic Study of Acid Hydrolysis of the Glucose Obtained from Banana Plant

  • Mónica Abril-González,
  • Angélica Vele-Salto and
  • Verónica Pinos-Vélez

The biomass of crops in rotation, such as that generated by the banana plant, is an interesting source of lignocellulose due to its composition and availability. This research aimed to compare the amount of glucose obtained from different parts of th...

  • Article
  • Open Access
12 Citations
3,965 Views
18 Pages

Synthesis and Characteristics of Composite Material with a Plant-Based Filler

  • Natalia Igorevna Cherkashina,
  • Zoya Vladimirovna Pavlenko,
  • Dar’ya Sergeyevna Matveenko,
  • Semen Nikolayevich Domarev,
  • Dar’ya Vasil’yevna Pushkarskaya and
  • Dar’ya Aleksandrovna Ryzhikh

The article presents the results of synthesis of polymeric composite material based on epoxy binder and plant-based filler. Pre-dried and powdered wheat straw was used as a plant-based filler. The wheat straw content in the composite varied from 10 t...

  • Article
  • Open Access
5 Citations
3,326 Views
12 Pages

One-Step Crystallization of Gahnite Glass-Ceramics in a Wide Thermal Gradient

  • Georgiy Yu. Shakhgildyan,
  • Roman O. Alekseev,
  • Nikita V. Golubev,
  • Vitaliy I. Savinkov,
  • Andrey S. Naumov,
  • Natalia N. Presnyakova and
  • Vladimir N. Sigaev

The glass crystallization regime plays a crucial role in the fabrication of glass ceramics: it affects both phase composition and microstructure, and thus the properties of the final product. In the search for new glass-ceramic materials, the develop...

  • Feature Paper
  • Article
  • Open Access
5 Citations
3,210 Views
15 Pages

Effect of Rigid Xanthan Gums (RXGs) on Flow and Pressure Drops to Improve Drag Reduction Rates in Horizontal Pipe Flow

  • Bashar J. Kadhim,
  • Omar S. Mahdy,
  • Sajda S. Alsaedi,
  • Hasan S. Majdi,
  • Zainab Y. Shnain,
  • Asawer A. Alwaiti and
  • Adnan A. AbdulRazak

Drag reduction in turbulent flow may be significantly reduced by adding tiny quantities of fiber, polymer, and surfactant particles to the liquid. Different drag-reduction agents have proven to be effective in enhancing the flowability of the liquid...

  • Article
  • Open Access
9 Citations
2,969 Views
17 Pages

Green Fractionation Approaches for the Integrated Upgrade of Corn Cobs

  • João Fialho,
  • Patrícia Moniz,
  • Luís C. Duarte and
  • Florbela Carvalheiro

Corn cob is an abundant agricultural residue worldwide, with high potential and interesting composition, and its valorization still needs to be studied. Selectively fractionating its structural components (hemicellulose, cellulose, and lignin), value...

  • Article
  • Open Access
5 Citations
2,719 Views
20 Pages

Prediction of Particle Suspension State for Various Particle Shapes Used in Slug Flow Crystallization

  • Anne Cathrine Kufner,
  • Nico Westkämper,
  • Henrik Bettin and
  • Kerstin Wohlgemuth

Particle transport is still an immense challenge in many processes today and affects both the operation and the consistency of the product quality, which is essential in the pharmaceutical industry, for example. Therefore, we developed a suspension c...

  • Article
  • Open Access
8 Citations
2,855 Views
17 Pages

Evaluating Electrochemical Properties of Layered NaxMn0.5Co0.5O2 Obtained at Different Calcined Temperatures

  • Le Minh Nguyen,
  • Van Hoang Nguyen,
  • Doan My Ngoc Nguyen,
  • Minh Kha Le,
  • Van Man Tran and
  • My Loan Phung Le

P-type layered oxides recently became promising candidates for Sodium-ion batteries (NIBs) for their high specific capacity and rate capability. This work elucidated the structure and electrochemical performance of the layered cathode material NaxMn0...

  • Article
  • Open Access
2 Citations
3,912 Views
11 Pages

Effect of a Tetraethoxysilane Hydrolysis Reaction Catalyst on the Precipitation of Hydrolysis Products in the Pores of a Polyimide Track Membrane

  • Natalia Igorevna Cherkashina,
  • Vyacheslav Ivanovich Pavlenko,
  • Semen Nikolayevich Domarev and
  • Nikolay Valeriyevich Kashibadze

This paper presents the results of obtaining a composite film based on polyimide track membranes filled with a silica filler, although the issue of the deposition of this filler in the pores of the given membranes remained unexplored. The filler was...

  • Article
  • Open Access
20 Citations
4,843 Views
39 Pages

The removal of color from dye wastewater is crucial, since dyes are extremely toxic and can cause cancer in a variety of life forms. Studies must be done to use cost-effective adsorbents for the removal of color from dye effluents to protect the envi...

  • Article
  • Open Access
5 Citations
3,276 Views
19 Pages

Method for Intensive Gas–Liquid Dispersion in a Stirred Tank

  • Nikolai A. Voinov,
  • Alexander S. Frolov,
  • Anastasiya V. Bogatkova,
  • Denis A. Zemtsov and
  • Olga P. Zhukova

This article presents the results of hydrodynamics and mass exchange in a stirred tank upon the introduction of gas from an open gas vortex cavity into local liquid regions with reduced pressure. It establishes conditions for the intensive dispersion...

  • Article
  • Open Access
3 Citations
2,571 Views
12 Pages

Preparation and Spectroscopic Characterization of Ternary Inclusion Complexes of Ascorbyl Palmitate and Urea with γ-Cyclodextrin

  • Yutaka Inoue,
  • Ayumi Nanri,
  • Florencio Jr. Arce,
  • Gerard Lee See,
  • Takashi Tanikawa,
  • Takami Yokogawa and
  • Masashi Kitamura

A three-component inclusion complex of ascorbyl palmitate (ASCP), urea (UR), and γ-cyclodextrin (γCD) with a molar ratio of 1/12 has been prepared for the first time using the evaporation method (EVP method) and the grinding and mixing me...

  • Communication
  • Open Access
4 Citations
2,617 Views
10 Pages

Production of Anhydrite Binder from Waste Fluorangydrite

  • Lyaila Bayatanova,
  • Bauyrzhan Rakhadilov,
  • Aidar Kengesbekov,
  • Manarbek Kylyshkanov,
  • Saule Abdulina,
  • Meruyert Adilkanova and
  • Zhuldyz Sagdoldina

The technology for obtaining hydrofluoric acid and the peculiarities of its production were studied, and the physical and chemical properties of the waste were examined. Activators that accelerated the hardening of the anhydrite binder were selected....

  • Article
  • Open Access
5 Citations
3,187 Views
16 Pages

Heterogeneous Photodegradation Reaction of Phenol Promoted by TiO2: A Kinetic Study

  • Francesco Broccoli,
  • Rosanna Paparo,
  • Maria Rosaria Iesce,
  • Martino Di Serio and
  • Vincenzo Russo

Phenol is widely used in industry. Due to its high stability and toxicity, it represents a threat to the environment and human health. In this study, a kinetic investigation of phenol heterogeneous photodegradation was conducted using commercial Aero...

  • Article
  • Open Access
8 Citations
4,111 Views
14 Pages

Two types of membranes, for hydrophilic and hydrophobic microfiltration, were prepared as flat sheets to treat a phenol-contaminated water solution. The membranes were fabricated using four synthetic polymers: polysulfone, polyethylene oxide, dimethy...

  • Feature Paper
  • Article
  • Open Access
2,975 Views
17 Pages

Tools to predict vapor–liquid phase equilibria are indispensable for the conceptualization and design of separation processes. Modified separation of cohesive energy density (MOSCED) is a solubility-parameter-based method parameterized to make...

  • Article
  • Open Access
1 Citations
4,083 Views
12 Pages

Dibasic Magnesium Hypochlorite as an Oxidant to Tune Pasting Properties of Potato Starch in One Step

  • J. O. P. Broekman,
  • Brian W. Dijkhuis,
  • Johanna A. Thomann,
  • André Heeres,
  • Hero J. Heeres and
  • Peter J. Deuss

Modified starches are used widely in the food industry but often have a low nutritional value, lacking minerals vital for the human body, such as magnesium. Magnesium addition to native starches has been shown to result in changes in pasting properti...

  • Article
  • Open Access
9 Citations
3,939 Views
17 Pages

Ti/Zr/O Mixed Oxides for the Catalytic Transfer Hydrogenation of Furfural to GVL in a Liquid-Phase Continuous-Flow Reactor

  • Anna Saotta,
  • Alessandro Allegri,
  • Francesca Liuzzi,
  • Giuseppe Fornasari,
  • Nikolaos Dimitratos and
  • Stefania Albonetti

This work aims to develop an efficient catalyst for the cascade reaction from furfural to γ-valerolactone in a liquid-phase continuous reactor. This process requires both Lewis and Brønsted acidity; hence, a bifunctional catalyst is nece...

  • Article
  • Open Access
7 Citations
3,079 Views
10 Pages

Photocatalytic and Glucose Sensing Properties of ZnO-Based Nanocoating

  • Dina Bakranova,
  • Bekbolat Seitov and
  • Nurlan Bakranov

Here, we report a simple and versatile synthesis of low-dimensional ZnO nanosheet (NS) arrays modified with Fe2O3 (hematite) to assemble photocatalytic coatings and non-enzymatic glucose sensors. Photocatalytic coatings made of widespread elements (z...

  • Article
  • Open Access
1 Citations
2,938 Views
19 Pages

Comparison of the Dynamic and Thermal Behavior of Different Ideal Flow Crystallizers

  • László Balogh,
  • Attila Egedy,
  • Zsolt Ulbert and
  • Ágnes Bárkányi

In this simulation study, we compare the dynamics and thermal behavior of different ideal flow crystallizers. The first step in creating mathematical models for the crystallizers was the implementation of the population balance equation. The populati...

  • Article
  • Open Access
4 Citations
3,398 Views
12 Pages

Graphite/β-PbO2 Composite Inert Anode Synthesis Using Electrochemical Methods

  • Selpiana Selpiana,
  • Sri Haryati and
  • Muhammad Djoni Bustan

The anode material is one of the determining factors for the success of the electrowinning process. This study aims to coat the graphite substrate with β-PbO2 to produce an inert graphite/β-PbO2 composite material with low cost and good qua...

  • Article
  • Open Access
6 Citations
2,350 Views
16 Pages

A study of the high-heat distribution of reacting species with approximation kinetics is essential in practical applications, for example, chemical synthesis, explosion safety and propulsion denotatives. As such, the temperature distribution and ther...

  • Article
  • Open Access
5 Citations
2,485 Views
9 Pages

Degradation Studies of Air-Exposed Black Phosphorous and Black Arsenic Phosphorous

  • Usman O. Abu,
  • Dinushika Vithanage,
  • Ashan Vitharana,
  • Jacek B. Jasinski and
  • Gamini Sumanasekera

This work investigates the effects of oxygen and humidity on black phosphorous (BP) and black arsenic phosphorous (AsxP1x ) flakes using Raman spectroscopy and in situ electric transport measurements (four-probe resistance and thermoelectric p...

  • Article
  • Open Access
5 Citations
3,920 Views
12 Pages

Utilizing oxo-degradable additives is an alternate, efficient method of managing plastic trash. To prepare the polymer chain for microorganisms to break down the fragments over time, oxo-degradation of plastics involves breaking the chain into small...

  • Article
  • Open Access
2 Citations
4,064 Views
20 Pages

Experimental Evaluation of a Coated Foam Catalytic Reactor for the Direct CO2-to-Methanol Synthesis Process

  • Kyatsinge Cedric Musavuli,
  • Nicolaas Engelbrecht,
  • Raymond Cecil Everson,
  • Phillimon Modisha,
  • Gunther Kolb,
  • Ralf Zapf,
  • Christian Hofmann and
  • Dmitri Bessarabov

The era of considering carbon dioxide (CO2) as a waste stream has passed. New methods of utilising CO2 as a carbon feedstock are currently the focus of extensive research efforts. A fixed-bed reactor containing a commercial Cu/ZnO/Al2O3 catalyst wash...

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ChemEngineering - ISSN 2305-7084