2025

Optimizing Copper Extraction: Integrated Pyrometallurgical Modelling with ChemApp for Python – Part I

Introduction Process modelling is a key approach for optimizing industrial operations, delivering tangible gains in cost reduction, process efficiency, and environmental performance. In copper extraction, pyrometallurgical routes consist of multiple interconnected unit operations that must be considered together to understand overall behavior. Using its stream functionality, ChemApp for Python provides rigorous thermochemical calculations that allow […]

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The end of an era: Farewell to Gwen and Phil Spencer

December 8, 2025 / Miscellaneous / Friederike Herrig

Two adults sitting together at a restaurant table during a workshop event. They are smiling toward the camera, with empty glasses, menus, and table decorations in front of them, against a deep red wall with framed artwork.

A farewell to two exceptional colleagues When someone who helped shape an entire field retires, it’s a significant milestone. When two such people retire together, it’s the end of an era. In this blog post, we bid farewell to Gwen and Phil Spencer as they begin their well-deserved retirement. For many years, Gwen and Phil,

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Aqueous phase diagrams, Part 1

November 11, 2025 / Uncategorized / Klaus Hack

It is customary to discuss the phase formation in systems with an aqueous phase on the basis of a so-called Pourbaix diagrams. These represent at constant temperature, usually 25°C, the regions of precipitation respectively solubility of a metallic component respectively its oxides or hydroxides for a particular molality as a function of Eh, the potential

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Aqueous phase diagrams, Part 2

November 11, 2025 / Uncategorized / Klaus Hack

Now let’s see how the option “aqueous diagram with molalities and iso-Eh & iso-ph lines” works. Figure 6 shows the Components screen for this option. Note that the order of the components is the same as for the “classical phase diagram”. With the same choice of the phases as above we now obtain a different

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Modeling Industrial Processes with ChemApp Streams – Part I

September 23, 2025 / ChemApp, ChemApp for Python, Process Simulation / Bruno Reis

Introduction Process modeling is a critical component in the optimization of industrial operations, delivering significant benefits in cost reduction, efficiency enhancement, and environmental sustainability. Through its stream functionality, ChemApp for Python delivers advanced thermochemically sound calculation capabilities that provide engineers with a robust framework for modeling complex thermochemical processes. Several functions related to streams have

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In Memory of Abdulmonem Obaied

March 25, 2025 / Uncategorized / Friederike Herrig

It is with great sadness that we share the unexpected passing away of our dear colleague and friend, Abdulmonem Obaied, at the age of 38. He leaves behind his wife, Sarah, and their son, Omar, born in July 2024. Abdulmonem was laid to rest on March 19 in Lille, France. He was a brilliant scientist,

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Optimizing Copper Extraction: Integrated Pyrometallurgical Modelling with ChemApp for Python – Part I

The end of an era: Farewell to Gwen and Phil Spencer

Aqueous phase diagrams, Part 1

Aqueous phase diagrams, Part 2

Modeling Industrial Processes with ChemApp Streams – Part I

In Memory of Abdulmonem Obaied

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