Removal of formaldehyde from aqueous solutions via oxygen reduction using a reticulated vitreous carbon cathode cell


Ponce de Leon, Carlos and Pletcher, Derek (1995) Removal of formaldehyde from aqueous solutions via oxygen reduction using a reticulated vitreous carbon cathode cell. Journal of Applied Electrochemistry, 25, (4), 307-314. (doi:10.1007/BF00249648).

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Original Publication URL: http://dx.doi.org/10.1007/BF00249648

Description/Abstract

The removal of formaldehyde from waste streams to <0.3 ppm has been demonstrated using a cell with a reticulated vitreous carbon cathode; the formaldehyde is oxidized by hydrogen peroxide, formed at the cathode by reduction of oxygen. In most electrolytes studied (e.g. NaOH, NaCl and Na2SO4), the formaldehyde is oxidised only to formic acid. On the other hand, the addition of a low concentration of an iron salt (i.e. 0.5 mm), catalyses the complete oxidation to carbon dioxide. The removal of formaldehyde can be achieved in media of low ionic strength (< 10 mm) although the use of iron salts necessitates the adjustment of pH to 3 to maintain the catalyst in solution.

Item Type: Article
ISSNs: 0021-891X (print)
Related URLs:
Keywords: formaldehyde, 3-dimensional electrodes, reticulated vitreous carbon, flow cell
Subjects: T Technology > TP Chemical technology
Q Science > QD Chemistry
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences > Engineering Materials & Surface Engineering
ePrint ID: 54608
Date Deposited: 01 Aug 2008
Last Modified: 27 Mar 2014 18:37
Contact Email Address: capla@soton.ac.uk
URI: http://eprints.soton.ac.uk/id/eprint/54608

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