[Treatment of cetyltrimethyl ammonium bromide wastewater by potassium ferrate].
A novel oxidant potassium ferrate (K2FeO4) was used to remove cetyltrimethyl ammonium bromide (CTAB) at room temperature. The effects of various conditions on the removal ratio, such as reaction time, dosing quantity of K2FeO4 and initial pH, were investigated. The experiments results show that the removal ratio reaches 79.4% when the reaction time is 30 min, the dosing quantity of K2FeO4 to CTAB is 1:1, the initial pH of the solution is 7. In the reaction progress, the oxidation of K2FeO4 and the flocculation of the reduction product have synergistic effect on the removal of CTAB. In addition, infrared spectra of CTAB before and after being treated with K2FeO4 were further studied. The results indicate that the degradation process involves the interruption of chain and the subsequent mineralization to inorganic molecules. Furthermore, the reaction of K2FeO4 and CTAB follows second order kinetics law.
College of Material Science and Engineering, Huaqiao University, Quanzhou 362021, China. yangwh@hqu.edu.cn
Wei-hua
WH
Yang
Hong-hui
HH
Wang
Xiao-xu
XX
Zeng
Ting-ting
TT
Huang
D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D058085:Iron Compounds / Q000737:chemistry*; D007700:Kinetics; D017680:Potassium Compounds / Q000737:chemistry*; D013501:Surface-Active Agents / Q000737:chemistry / Q000302:isolation & purification; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*
D002593:Cetrimonium Compounds; D058085:Iron Compounds; D017680:Potassium Compounds; D013501:Surface-Active Agents; D014874:Water Pollutants, Chemical; C044384:potassium ferrate; D000077286:Cetrimonium