Department of Cosmetic Application & Management, St. Mary's Medicine Nursing and Management College, I-Lan, Taiwan.
J Hazard Mater. 2010 Feb 15;174(1-3):795-800. doi: 10.1016/j.jhazmat.2009.09.122. Epub 2009 Sep 30.
Particles are often too small to be separated from a reaction system and recycled, especially in wastewater treatment via a catalytic ozonation process. Thus, the objective of this study was to prepare a magnetic catalyst (SiO(2)/Fe(3)O(4)) that can be recycled by using an external magnetic field. The effects of the characteristics of the magnetic catalyst, pH values, catalyst dosage, and initial concentration of Reactive Black 5 (RB5) on mineralization efficiency of the magnetic catalyst/H(2)O(2)/O(3) process were also investigated. The mineralization efficiency of RB5 under various conditions followed the sequence: SiO(2)/Fe(3)O(4)/H(2)O(2)/O(3)>SiO(2)/Fe(3)O(4)/O(3)>Fe(3)O(4)/O(3) approximately H(2)O(2)/O(3)>O(3)>SiO(2)/Fe(3)O(4)/H(2)O(2). Given the results of our reuse and recovery experiments, the magnetic catalyst shows considerable promise for use in water treatment.
颗粒通常太小，无法从反应系统中分离出来并进行回收，特别是在通过催化臭氧化工艺处理废水时。因此，本研究的目的是制备一种可以通过外加磁场回收的磁性催化剂（SiO(2)/Fe(3)O(4)）。考察了磁性催化剂的特性、pH 值、催化剂用量以及活性黑 5（RB5）初始浓度对磁性催化剂/H(2)O(2)/O(3)工艺矿化效率的影响。在各种条件下 RB5 的矿化效率依次为：SiO(2)/Fe(3)O(4)/H(2)O(2)/O(3)>SiO(2)/Fe(3)O(4)/O(3)>Fe(3)O(4)/O(3)近似 H(2)O(2)/O(3)>O(3)>SiO(2)/Fe(3)O(4)/H(2)O(2)。考虑到我们的重复使用和回收实验的结果，该磁性催化剂在水处理中具有很大的应用前景。
