Expanded Bed Adsorption vs Centrifugation — When to Use Each

At a glance

ScopeDirect capture

CAPEX$300k-$2M

Best forCell-containing feed capture

vs

Scope0.1-100 um particles

CAPEX$300k-$3M

Best forCell harvest, clarification

Criterion	Expanded Bed Adsorption	Centrifugation	Verdict
Separation principle	Cell-containing feed capture	Cell harvest, clarification	Direct capture vs clarify-then-capture
Throughput / scale	100-2,000 L/hr	1,000-50,000 L/hr	Centrifuge higher
Capital cost	$300k-$2M	$300k-$3M	Centrifuge higher
Operating cost	Step count saving	Energy + maintenance	EBA saves steps
Product purity ceiling	Captures + clarifies in one	Clarifies only	EBA more integrated

EBA collapses clarification and capture into one step. Centrifuge + packed-bed is the traditional split.

Rule of thumb: Shear-sensitive product or want a shorter train? EBA. Established platform process? Centrifuge.

When should I choose Expanded Bed Adsorption over Centrifugation?

Use EBA when you want to skip the clarification step — direct capture from whole cell broth. Good for thermolabile or shear-sensitive products.

When should I choose Centrifugation over Expanded Bed Adsorption?

Use centrifugation for traditional clarify-first trains where you have downstream capture chromatography already in place.

Can these two techniques be used together?

Not usually combined — EBA replaces the clarify+capture pair.

Which has lower OPEX at scale?

EBA saves one full unit operation but matrix is more expensive than packed-bed equivalent.