Abstract：
:The electrochemical decolourisation of structurally different dyes (bromophenol blue, indigo, poly R-478, phenol red, methyl orange, fuchsin, methyl green and crystal violet) by means of the application of DC electric current was assessed. It was found that the electrochemical process allowed a colour removal of all dyes studied, although the decolourisation rate largely depended on the chemical structure of the different dyes. Nearly complete decolourisation was achieved for bromophenol blue followed by methyl orange and methyl green, whereas phenol red was hardly decolourised (30% in 60 min). In mixtures of two dyes, the decolourisation rate became similar for both dyes. However, the addition of a redox mediator, (Co(2+/3+)) clearly enhanced the degradation rate of all tested dyes, but the simplest dye molecules were attacked firstly, followed by dyes with more complex chemical structures. The results revealed the suitability of the process to effectively decolourise wastewaters from dyeing process.
journal_name
Chemospherejournal_title
Chemosphereauthors
Sanromán MA,Pazos M,Ricart MT,Cameselle Cdoi
10.1016/j.chemosphere.2004.06.019subject
Has Abstractpub_date
2004-10-01 00:00:00pages
233-9issue
3eissn
0045-6535issn
1879-1298pii
S0045-6535(04)00472-2journal_volume
57pub_type
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