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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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.
|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
|Date Deposited:||01 Aug 2008|
|Last Modified:||08 Jun 2012 12:24|
|Contact Email Address:||firstname.lastname@example.org|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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