Mineralization of Reactive Black 5 in aqueous solution by basic oxygen furnace slag in the presence of hydrogen peroxide.
Basic oxygen furnace slag (BOF slag) is a solid waste arisen from the steel making process. FeO is one of the major components of BOF slag. The FeO-containing property of BOF slag makes it possible to catalyze the Fenton reaction. Reactive Black 5 (RB5) dye is chosen as the target compound in this study. This study has investigated the catalytic performance of BOF slag on the Fenton reaction to decompose RB5 in aqueous solution. A first-order kinetic model with respect to TOC was adopted to explain the mineralization of RB5 by the H(2)O(2)/BOF slag process. The experimental results in this study suggested that dosage with 1.49 x 10(-4)M min(-1) H(2)O(2) and 12.5 g l(-1) BOF slag in the solution at pH 2 provided the optimal operation conditions for the mineralization of RB5 yielding a 51.2% treatment efficiency at 100 min reaction time, and complete decoloration can be achieved within 30 min reaction time. The H(2)O(2)/Fe(2+) ratio was then determined to be 6.06:1.
Chiou
Chyow-San
CS
Department of Environmental Engineering, National I-Lan University, 1, Sec. 1, Shen-Lung Road, I-Lan 260, Taiwan. chiou33@ms7.hinet.net
Chang
Chiung-Fen
CF
Chang
Chang-Tang
CT
Shie
Je-Lueng
JL
Chen
Yi-Hung
YH
D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D007501:Iron / Q000737:chemistry; D007700:Kinetics; D008903:Minerals / Q000737:chemistry; D009282:Naphthalenesulfonates / Q000737:chemistry*; D012996:Solutions; D013696:Temperature; D018505:Waste Management; D014867:Water
D007220:Industrial Waste; D008903:Minerals; D009282:Naphthalenesulfonates; D012996:Solutions; D014867:Water; D006861:Hydrogen Peroxide; D007501:Iron; C063421:Remazol black B