Application 1006

Comparison of reaction speed with rotating bed reactor and stirred tank reactor

Video revealing the efficient mass transfer and resulting shorter reaction time with a rotating bed reactor (RBR) during ion-exchange neutralization of a base. The reaction with the RBR finished 30% faster and left a completely clear solution without any particles.

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    Conditions: Neutralization of sodium hydroxide (1 M, 200 µL) by cation exchanger Amberlite IRN99 (20 mL) placed either in a SpinChem® S311 rotating bed reactor (RBR) or distributed in solution agitated by a 5 cm impeller, both operated at 800 rpm within a SpinChem® V311 flower-baffled reaction vessel containing 800 mL water with phenolphthalein (20 mg/L). The reaction with RBR finished after 23 s versus 33s for the stirred tank reactor with impeller.