活性电弧炉渣作为一种有效且可重复使用的类芬顿催化剂用于亚甲基蓝和酸性蓝29的光降解。
Activated electric arc furnace slag as an effective and reusable Fenton-like catalyst for the photodegradation of methylene blue and acid blue 29.
作者信息
Nasuha N, Ismail S, Hameed B H
机构信息
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.
School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300, Nibong Tebal, Penang, Malaysia.
出版信息
J Environ Manage. 2017 Jul 1;196:323-329. doi: 10.1016/j.jenvman.2017.02.070. Epub 2017 Mar 14.
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 FeO because 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 of A-EAFS, 20 mM HO, and pH 3. The optimal conditions for AB29 were 0.1 g L A-EAFS, 4 mM HO, 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.
在这项工作中，研究了一种活性电弧炉渣（A-EAFS）作为一种有效的芬顿催化剂用于亚甲基蓝（MB）和酸性蓝29（AB29）的光降解。傅里叶变换红外光谱和紫外可见吸收分析表明，由于氧化铁相的变化和对可见光的良好响应，A-EAFS提供了额外的FeO。研究发现，在1 g/L的A-EAFS、20 mM的H₂O₂和pH值为3的最佳条件下，MB的最高降解效率可达94%。AB29的最佳条件是0.1 g/L的A-EAFS、4 mM的H₂O₂和pH值为3，降解效率达到98%。可见光增强了两种染料的降解。此外，A-EAFS可以很容易地通过磁性分离，在连续七个光降解循环后表现出良好的化学稳定性。
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