Colloidal solution: Zeta potential and Electrical double layer

Colloids can act in both ways, positive when their stability is of utmost importance and negative when their stability is unwanted. In oil and gas industries petroleum residues are found to be colloidal systems, and asphaltenes are considered to be the nuclei of them.

the combination of two layers of opposite charges around the colloidal particle is called Helmholtz electrical double layer. The potential difference between the fixed layer and the diffused layer of opposite charge

Electrical Double Layer - an overview

Electric Double Layer - an overview

Zeta Potential - an overview

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1: Electrical double layer. Depiction of the electrical double

Graphic description of the electrical double layer on a clay