Decolourisation of reactive dyestuff using Fenton's reagent

• Main Authors: Aris, Azmi, Sharratt, Paul N.
• Format: Article
• Language: English
• Published: Faculty of Civil Engineering, UTM 2005
• Subjects: TA Engineering (General). Civil engineering (General)
• Online Access: http://eprints.utm.my/id/eprint/8287/1/AzmiAris2005_DecolourisationOfReactiveDyestuffUsingFenton%E2%80%99SReagent.pdf; http://eprints.utm.my/id/eprint/8287/; http://portal.psz.utm.my/psz/index.php?option=com_content&task=view&id=128&Itemid=305&PHPSESSID=81b664e998055f65b4ccff8f61bf7cb2
• Institution: Universiti Teknologi Malaysia

The behaviour of Fenton's Reagent (FR) system in decolourising Reactive Black 5 (RB5) was investigated. It was observed that the system is capable to decolourise 0.2 mM RB5 within a reasonable time with most decolourisation occurred in the first minute. The performance of the process is greatly affected by the reagent dosage. The best dosages of peroxide and Fe2+ were 7 mM and 1 mM, respectively. The best H202:Fe2+:dye molar ratio was 35:5:1. The dye was also found to enhance the decomposition of the peroxide. This suggests the possibility of Fe3+7Fe2+ `redox-recycled' as experienced in a Hamilton-like system favouring the use of FR process for the degradation of the dye.