In situ oxidative degradation of formaldehyde with electrogenerated hydrogen peroxide

Journal Article · Tue Jun 01 04:00:00 EDT 1993 · Journal of the Electrochemical Society; (United States)

OSTI ID:5992003

Do, Jing Shan; Chen, Chin Pin ^[1]

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1. Tunghai Univ., Taichung (Taiwan, Province of China). Dept. of Chemical Engineering

Formaldehyde is a toxic material which must be reduced below, say 3 ppm before industrial waste waters can be discharged. The factors affecting the cathodic reduction of oxygen to hydrogen peroxide and the degradation of formaldehyde using in situ generated hydrogen peroxide are presented in this work. The current efficiency for the production of hydrogen peroxide on graphite has been indicated by the experimental results to have been significantly affected by the pH value, the current density, the temperature, and the oxygen sparging rate. The maximum current efficiency for the cathodic reduction of oxygen to hydrogen peroxide was 93.5%. The degradation of formaldehyde by the electrogenerated hydrogen peroxide was primarily governed by the current density, the pH value, and the temperature. The degradation fraction of formaldehyde was more than 99% whenever the initial concentration of formaldehyde was in the range of 250 to 1,000 ppm.

• OSTI ID: 5992003
• Journal Information: Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 140:6; ISSN JESOAN; ISSN 0013-4651
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
54 ENVIRONMENTAL SCIENCES
540220 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
ALDEHYDES
CHEMICAL REACTIONS
CURRENT DENSITY
DATA
ELECTROCHEMICAL CELLS
ELEMENTS
EXPERIMENTAL DATA
FORMALDEHYDE
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
INDUSTRIAL WASTES
INFORMATION
LIQUID WASTES
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
OXYGEN
OXYGEN COMPOUNDS
PEROXIDES
PH VALUE
REDUCTION
SYNTHESIS
TEMPERATURE DEPENDENCE
WASTE WATER
WASTES
WATER
WATER TREATMENT