Abstract：
:The Fenton process, one of several advanced oxidation processes, describes the reaction of Fe(II) with hydrogen peroxide. Fe(II) is oxidized to Fe(III) that reacts with hydrogen peroxide to Fe(II) and again initiates the Fenton reaction. In the course of the reactions reactive species, e.g. hydroxyl radicals, are formed. Conditions such as pH, ligand concentrations and the hydrogen peroxide/Fe(II) ratio may influence the OH radical yield. It could be shown that at pH < 2.7 and >3.5 the OH radical yield decreases significantly. Two ligands were investigated, pyrophosphate and sulfate. It was found that pyrophosphate forms a complex with Fe(III) that does not react with hydrogen peroxide and thus, the Fenton reaction is terminated and the OH radical yields do not further increase. The influence of sulfate is not as strong as that of pyrophosphate. The OH radical yield is decreased when sulfate is added but even at higher concentrations the Fenton reaction is not terminated.
journal_name
Chemospherejournal_title
Chemosphereauthors
Fischbacher A,von Sonntag C,Schmidt TCdoi
10.1016/j.chemosphere.2017.05.039subject
Has Abstractpub_date
2017-09-01 00:00:00pages
738-744eissn
0045-6535issn
1879-1298pii
S0045-6535(17)30734-8journal_volume
182pub_type
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