Fachzeitschriften

Chemie Ingenieur Technik

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Titelbild Chem. Ing. Tech. 4/2024

19.03.2024

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„Immer über den Tellerrand hinausschauen”

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Production of Galacto‐Oligosaccharides by Enzymatic Membrane Reactors Using Free β‐Galactosidase

von Cao Teng et al.

· 19.03.2024

Attachment of a membrane module with an already existing stirred-tank reactor, designated as free enzyme membrane reactor, which might be a potential alternative for the industrial production of prebiotic galacto-oligosaccharide. In this review, dif...

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Production of Fructo‐Oligosaccharides in Membrane Bioreactor Using Rotating Ceramic Membrane Disc

von Rong Fan et al.

· 19.03.2024

Dynamic cross-flow filtration is a promising alternative for fouling control. A rotating ceramic membrane device could minimize the deposition of protein and increase the enzyme rejection by the joint effect of centrifugal field and tangential cross...

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Fractionation of Glycans from Hot‐Water Extracts with Ceramic Ultrafiltration Membranes

von Marius Wolf et al.

· 19.03.2024

Industrial biogenic residues are a large feedstock for material utilization. Extraction, purification and fractionation of hemicellulose are a challenging task but will lead to a sustainable source of biopolymers for further modification and applica...

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Separation and Purification of Vanillin and Syringaldehyde from an Oxidized Kraft Liquor – A Mini Review

von Meilia Yoseba et al.

· 19.03.2024

Viable and integrated reaction and separation techniques are necessary for effective lignin valorization to generate high added-value monomeric phenolics like syringaldehyde and vanillin. Extensive research has been directed toward techniques like e...

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Separation of Biobased Carboxylic Acids by Aqueous Phase Nanofiltration

von Lukas Rübenach et al.

· 19.03.2024

We demonstrate the suitability of a commercial membrane for the aqueous nanofiltration of biobased carboxylic acids. The system is suitable for their in situ separation from fermentation mixtures by selective permeation of the acids at low pH while ...

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Wheat bran extract as a source of amino compounds and sugar for biotech processes

von Stefan Hanstein

· 19.03.2024

By-products of food processing are underutilized. For wheat bran a simple, efficient extraction method with two industrial enzymes is described, which can be integrated into the production sites of nutrient additives, enzymes and natural products. ...

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Aggregate Removal by Responsive Electrospun Membrane based Hydrophobic Interaction Chromatography

von Xiaolei Hao et al.

· 19.03.2024

Salt responsive polymer, poly(N-vinylcaprolactam), becomes hydrophobic in high salt concentration buffer. Electrospun cellulose nanofiber membranes grafted with PVCL polymer chains can separate protein monomer from its dimer as dimer has stronger hy...

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Process Intensification by Inoculating Antibody Production Bioreactors Directly from Cryovials

von Jan Ott et al.

· 19.03.2024

An approach to eliminate seed train bioreactors for antibody production with CHO cells is presented. An ultra-high cell density cell bank is used for inoculation of fed-batch and perfusion experiments at lab-scale. The fed-batch process is scaled-up...

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Review on the Impact of Impeller‐induced Hydrodynamics on Suspension Cell Culture for Production of Biopharmaceuticals

von Ralf Pörtner et al.

· 19.03.2024

Within this review first a brief introduction to hydrodynamic effects is given, followed by an evaluation of common process design approaches with respect to hydrodynamic effects and recommendations for process development. Abstract Hydrodynamic ...

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Comparative Study of Fluid Dynamic Stress on Aspergillus niger and Model Systems

von Philipp Waldherr et al.

· 19.03.2024

Filamentous microorganisms are stress-sensitive, and the productivity of a cultivation process is closely linked to the particle stress employed by the stirrer and the aeration unit. To facilitate the experimental investigation of particle stress, d...

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Additive Manufacturing of Metal Load‐Bearing Implants 1: Geometric Accuracy and Mechanical Challenges

von Elisabetta M. et al.

· 19.03.2024

Additive manufacturing makes it possible to produce sustainable and personalized metal implants with intricate designs. Stringent geometry requirements, materials' constraints and mechanical challenges, question the broader adoption of additive manu...

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Additive Manufacturing of Metal Load‐Bearing Implants 2: Surface Modification and Clinical Challenges

von Elisabetta M. et al.

· 19.03.2024

Additive manufacturing makes it possible to produce sustainable and personalized metal implants with intricate designs. Interaction between implants and surrounding tissues, question the broader adoption of additive manufacturing over traditional ma...

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Assessment and Upgrading of Preparation Protocols for Emulsified Crude Oils Mimicking Real Produced Water Characteristics

von Hasan Idrees et al.

· 19.03.2024

This study aims at assessment, reproduction and upgrading of literature-based preparation protocols for synthetic produced water (PW) at tertiary treatment stage. The objective was to produce synthetic model water as standardized controllable medium...

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Increasing the Sustainability of Pharmaceutical Grade Water Production

von Frank Rögener

· 19.03.2024

The pharmaceutical industry is one of the world's largest consumers of water and energy. Considerable efforts must therefore be made in the future to ensure the sustainability of processes as well as product quality. Abstract Water serves for the...

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Comparative Analysis of pH Prediction Routines in ADM1 and a Specialized Water Chemistry Simulator

von Pascal Kosse et al.

· 19.03.2024

pH simulations play a crucial role in modeling anaerobic digestion processes. Visual Water, a water chemistry software tool, provides a reliable pH prediction routine along with an automated mathematical uncertainty analysis. Its reliability was val...

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Impact of Pickering Emulsions Composition on Lipase Catalyzed Peroxyacetic Acid Synthesis

von Lemuel Adomi et al.

· 19.03.2024

Peroxyacetic acid synthesis was carried out in a biphasic system stabilized by silica nanoparticles. The nanoparticles provided a protective environment for the enzymes against the detrimental effect of the oxidant and acetic acid. Increased hydroph...

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Design of Induction Heatable Carbon‐Based Foams for Catalysis

von Jonathan Maier et al.

· 27.03.2024

The development of catalyst supports with direct incorporation of the catalyst material and magnetically heatable particles during the foaming process is presented. The developed materials will be used in a reactor with induction heater for the synt...

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Quantitative Beschreibung der partiellen Kuchenresuspendierung bei der Filterkuchenwäsche im LabormaßstabQuantitative Description of Partial Cake Reslurrying during Displacment Washing

von Hendrik Simon et al.

· 22.03.2024

Bei industriellen Waschprozessen werden Filterkuchen während der Waschflüssigkeitsaufgabe aufgewirbelt, was zur frühen Kontamination der Waschflüssigkeit führt. Die Vernachlässigung dieses Effekts beeinträchtigt die Auslegung eines Waschprozesses. E...

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One‐Dimensional View of the Structural Changes in the Filtering Layer during Continuous Dust Deposition – A New Approach to a Holistic View of the Filtration Process

von Qian Zhang

· 22.03.2024

The overall filtration process is viewed as a continuous change in the structure of the active deposition zone of a given filter layer: from the initial clean filter medium, via continuous particle deposition, to a new, dynamically preserved stable ...

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Ein neues Konzept zur CO2‐Bereitstellung aus Luft als Gaswäsche mit ionischen FlüssigkeitenA New Concept for CO2 Supply from Air as Gas Scrubbing with Ionic Fluids

von Peter Kussin et al.

· 22.03.2024

Ein innovatives Direct Air Capture (DAC)-Konzept zur CO₂-Bereitstellung aus Luft wird präsentiert. Die Machbarkeit einer Gaswäsche zur CO₂-Gewinnung aus der Umgebungsluft wird nachgewiesen, bei der ein konzentriertes CO₂-Produktgas anfällt. Die Basi...

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NaWuReT Colloquium: Career Pathways and Opportunities for Reaction Engineers in Industry

von Bjarne Kreitz et al.

· 22.03.2024

What are typical pathways of an industrial career? How do I find the best position for my personal well-being? How flexible is an industrial career? With this report, you have more answers than questions. Abstract The Nachwuchs Reaktionstechnik (...

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Experimental Heat Transfer Coefficients for Zeotropic Mixture Condensation of Hexamethyldisiloxane/Octamethyltrisiloxane and Ethanol/Hexamethyldisiloxane

von Conrad Zimmermann et al.

· 23.02.2024

Experimental data is presented for mixture condensation within a wide composition range. Different aspects in the heat transfer deterioration of mixtures are discussed. The results serve to develop a novel superposition approach for the approximate ...

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Dry Recycling of Lithium‐Containing Material by Forced Tribocharging and Electrostatic Separation

von Mehran Javadi et al.

· 13.02.2024

Forced dry triboelectric charging and electrostatic separation of powdered materials was investigated, focusing on the charging behavior of lithium aluminate and talcum. Successful lithium enrichment from the talcum-lithium aluminate mixture points ...

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Goal‐Oriented Two‐Layered Kernel Models as Automated Surrogates for Surface Kinetics in Reactor Simulations

von Felix Döppel et al.

· 30.01.2024

Specialized kernel models are introduced as a plug-and-play solution to significantly accelerate simulations of reactive systems without requiring machine learning expertise from the users. The workflow reduces the need for expensive training data a...

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Grundlagenuntersuchungen zum Einfluss verschiedener Zerkleinerungsparameter auf die spezifische Zerkleinerungsarbeit von kohlenstofffaserverstärkten KunststoffenBasic Investigations of the Influence of Comminution Parameters on the Specific Comminution Energy of Carbon Fiber Reinforced Polymers

von Philipp Karsten et al.

· 30.01.2024

Die Effekte unterschiedlicher Parameter auf dem Kraft- und Energiebedarf bei der Zerkleinerung von kohlenstofffaserverstärktem Kunststoff (CFK), einem essenziellen Prozessschritt beim CFK-Recycling, werden untersucht. Über ein modifiziertes Pendelsc...

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Retracted: Can the chemical industry solve the climate change?On the role of human energy production, renewable energies, and the potential of chemistry as a solution provider

von Martin Bertau et al.

· 25.10.2023

Let us consider an alternative perspective on climate change: The sum of solar radiation and heat generated by human activity result in a net energy input of 1.96 times that of the Sun on the Earth's surface. The expanding global population is expec...

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Influence of High Hydrostatic Pressure and Pulsed Electric Field Treatment on Moisture Absorption of Wheat Grains

von Ivan Shorstkii et al.

· 20.12.2022

The effect of high hydrostatic pressure and pulsed electric fields were tested as pretreatments for moisture absorption of wheat grains. To measure the moisture, innovative and non-invasive sensor based on microwave technology was used. The results ...