Mineralization of reactive Black 5 in aqueous solution by ozone/H2O2 in the presence of a magnetic catalyst.
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.
Department of Cosmetic Application & Management, St. Mary's Medicine Nursing and Management College, I-Lan, Taiwan.
Hua-Wei
HW
Chen
Yu-Lin
YL
Kuo
Chyow-San
CS
Chiou
Shih-Wei
SW
You
Chih-Ming
CM
Ma
Chang-Tang
CT
Chang
D002384:Catalysis; D006861:Hydrogen Peroxide / Q000737:chemistry*; D008280:Magnetics; D008903:Minerals / Q000737:chemistry*; D009282:Naphthalenesulfonates / Q000737:chemistry*; D010126:Ozone / Q000737:chemistry*; D012996:Solutions; D014867:Water
D008903:Minerals; D009282:Naphthalenesulfonates; D012996:Solutions; D014867:Water; D010126:Ozone; D006861:Hydrogen Peroxide; C063421:Remazol black B