Activated electric arc furnace slag as an effective and reusable Fenton-like catalyst for the photodegradation of methylene blue and acid blue 29.
In this work, an activated electric arc furnace slag (A-EAFS) was investigated as an effective Fenton catalyst for the photodegradation of methylene blue (MB) and acid blue 29 (AB29). Fourier transform infrared spectroscopy and UV-visible absorption analyses indicated that A-EAFS offers additional Fe3O4because of the changes in the iron oxide phase and the favorable response to visible light. It has been found that the highest degradation efficiency can reach up to 94% for MB under optimal conditions of 1 g L-1of A-EAFS, 20 mM H2O2, and pH 3. The optimal conditions for AB29 were 0.1 g L-1A-EAFS, 4 mM H2O2, and pH 3 to reach 98% degradation efficiency. Visible light enhanced the degradation of both dyes. In addition, A-EAFS, could be easily separated magnetically, exhibited good chemical stability after seven successive photodegradation cycles.
School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300, Nibong Tebal, Penang, Malaysia; Faculty of Chemical Engineering, Universiti Teknologi Mara Pulau Pinang, 13500, Permatang Pauh, Penang, Malaysia.
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N
Nasuha
School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300, Nibong Tebal, Penang, Malaysia.
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S
Ismail
School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300, Nibong Tebal, Penang, Malaysia. Electronic address: chbassim@usm.my.
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BH
Hameed
D001391:Azo Compounds; D002384:Catalysis; D006861:Hydrogen Peroxide; D008751:Methylene Blue; D009281:Naphthalenes; D010782:Photolysis
D001391:Azo Compounds; D009281:Naphthalenes; C469426:acid blue 29; D006861:Hydrogen Peroxide; D008751:Methylene Blue
A-EAFS; Anionic dye; Cationic dye; Fenton-like photocatalyst; Visible light