Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (3): 347-351.DOI: 10.12068/j.issn.1005-3026.2016.03.010

• Materials & Metallurgy • Previous Articles     Next Articles

Study on Degradation of Methylene Blue Through Heterogeneous Fenton in Slag Catalyst

YANG He, WANG Zhen, HAN Chong, XUE Xiang-xin   

  1. School of Metallurgy, Northeastern University, Shenyang 110819, China.
  • Received:2015-01-19 Revised:2015-01-19 Online:2016-03-15 Published:2016-03-07
  • Contact: YANG He
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Abstract: The catalytic degradation of methylene blue (MB) in wastewater were investigated, in which slag and hydrogen peroxide were used as catalyst and oxidation agent, respectively. The results show that the acid dosage plays a vital role in the whole reaction, and the effective degradation is achieved in the condition of a given acid dosage. The removal rate of MB increases first and then decreases with increase of the concentration of hydrogen peroxide. Moreover, the particle size of slag, steel slag dose, and reaction temperature mainly affect the removal rate of MB by affecting the dissolution of Fe. The removal rate of MB can achieve 99.1% under the following experimental conditions: reaction time 60min, the concentration of MB solution 200 mg/L, initial H2O2 concentration 0.000 6, steel slag(45~58μm)dosage 6g/L and reaction temperature 30℃. According to the infrared spectrum of steel slag before and after the reaction, MB is removed by oxidization but not by adsorption.

Key words: steel slag, heterogeneous Fenton, methylene blue, catalysis, reaction conditions

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