Slide one: Electrochemical Thermodynamics
Slide one: Electrochemical Thermodynamics
"Thank you. To understand how our reactor captures heavy metals passively, let's look at the theoretical framework. The core principle is the spontaneity of the reaction, described by the Gibbs Free Energy equation. We calculated theoretical values for our target contaminants-Copper, Lead, and Zinc-against our sacrificial Aluminum anode.
Because Aluminum has a low standard reduction potential, it creates a large positive cell potential when paired with these metals, ranging from positive zero point ninety volts for Zinc up to positive two point zero zero volts for Copper. Consequently, the highly negative Gibbs Free Energy values mathematically prove that cementation is thermodynamically spontaneous.
To overcome the 'Passivation Paradox'-where aluminum's oxide layer blocks reactions-we rely on the Capacitance Theory. The thin oxide layer acts as a dielectric, allowing electron transfer. This is exactly why we target mine wastewater: the acidity dissolves the oxide shell, unlocking the aluminum core so the reaction can proceed."
Slide two: Primary Mechanism: Reductive Cementation
Slide two: Primary Mechanism: Reductive Cementation
"This brings us to the core engine: Reductive Cementation. This is essentially a metal displacement process split into two simultaneous half-reactions.
In the Anodic Reaction, our Aluminum screens act as the electron donor. The aluminum oxidizes, releasing electrons and dissolving into the solution. Immediately, the target contaminants-the Copper, Lead, and Zinc ions-consume these electrons in the Cathodic Reaction. This reduces them from a soluble ionic state into solid, elemental metals that plate directly onto the screen."