Method for the removal of particulate matter from aqueous suspension
AssigneeHaldor Topsoe A/S
InventorNiels Christiansen
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Abstract
Method for the removal of particulate matter from aqueous suspension comprising steps of establishing value of pH and of Zeta potential of particles in the suspension; providing a porous filter having a membrane layer consisting of at least a metal-oxide with a Zeta potential at the pH value of the suspension having same polarity of the Zeta potential as the particles in the suspension; passing the suspension through the porous filter; and withdrawing a filtrate.
Claims6
Method for the removal of particulate matter from aqueous suspension comprising steps of
- establishing value of pH and of Zeta potential of particles in the suspension;
- providing a porous ceramic filter having a membrane layer consisting of at least a metal-oxide with a Zeta potential at the pH value of the suspension having same polarity of the Zeta potential as the particles in the suspension;
- passing the suspension through the porous filter;
- and
- withdrawing a filtrate.
System for cross-flow microfiltration of an aqueous suspension of particles to be retained comprising
- a porous ceramic filter having a membrane layer consisting of a least one metal-oxide, a pump for pumping the aqueous suspension through the porous ceramic filter, wherein Zeta potential of the membrane layer has the same sign of polarity as the particles to be retained at pH value of the aqueous suspension during filtration.
Dependencies are inferred from the claim text.