Active Transport of Formaldehyde through an Anion-Exchange Membrane via the Formation of Bisulfite Adduct

Abstract

Formaldehyde reacts with bisulfite to form hydroxymethanesulfonate, which is a conjugate base of a strong acid, and is able to be transported actively by the coupled countertransport of hydroxide ion through an anion-exchange membrane. The permeation rate is controlled by pH and formaldehyde can be separated readily from other types of organic solutes via this method.

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