FIELD: chemistry.
SUBSTANCE: invention relates to a process of formaldehyde removal by catalytic oxidizing which can be used in waste water treatment in petrochemical, medical, chemical and pharmaceutical industries. The process of formaldehyde removal from aqueous solutions at ambient temperature comprises exposing formaldehyde to a catalyst and oxidizing with oxygen. A nanocomposite material comprising silver - high basic anion exchanger in OH--form is used as a catalyst. The oxidation is conducted within 0.5-5 hours.
EFFECT: simple and cost-effective method for removal of up to 60-80% of the initial formaldehyde concentration in aqueous solutions at the temperature of T = 20-25°C and atmospheric pressure.
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Authors
Dates
2015-04-10—Published
2012-06-25—Filed