Decolourisation of Direct Orange S dye by ultra sonication using iron oxide nanoparticles

作者：Karthikeyeni S; Vijayakumar T Siva; Vasanth S; Ganesh Arul; Vignesh V; Akalya J; Thirumurugan R; Subramanian P^*

来源：Journal of Experimental Nanoscience, 2015, 10(3): 199-208.

DOI：10.1080/17458080.2013.822107

• sonolysis
• iron oxide nanoparticles
• HPLC
• textile dye decolourisation

Biosynthesised iron oxide nanoparticles (INPs) less than 100nm were used to decolourise the textile dye, Direct Orange S by the process of ultra sonication. The parameters tested for the decolourisation of the Direct Orange S dye were the INP concentration (0.2-1g/l), pH (3-11) and H2O2 concentration (2-8ml/l). The rate of decolourisation process was performed by both stirrer and ultra sonicator method using the first-order kinetics ln(c/c(0)). The percentage of dye removal for the optimum conditions such as INP, 1g/l (87.2%); pH, 9 (85.5%) and H2O2 concentration 8ml/l (86.5%) were observed. The Direct Orange S dye was degraded efficiently by sonolysis (60min) than by the magnetic stirrer method (120min). High-performance liquid chromatography results showed that the peak for Direct Orange S dye was not present when the dye sample was treated by either H2O2 + INP or INP alone. Use of biosynthesised iron NPs in Direct Orange S dye (azo dye) decolourisation by a simple non-toxic Fenton reaction is a safe and novel approach. Industrialisation of this technique will be an economical way to decolorise the textile dyes present in water systems.

• 出版日期2015-2-11