Using resin supported nano zero-valent iron particles for decoloration of Acid Blue 113 azo dye solution.
In this study, a synthesized cation exchange resin supported nano zero-valent iron (NZVI) complex forming NZVI-resin was proposed for the decoloration of an azo dye Acid Blue 113 (AB 113), taking into account reaction time, initial dye concentration, NZVI dose and pH. From results, the successful decoloration of the AB 113 solution was observed using a NZVI-resin. Increasing the iron load to 50.8 mg g(-1), the removal efficiencies of the AB 113 concentration increased exponentially. With an initial dye concentration of 100 mg l(-1) and nano iron load of 50.8 mg g(-1), the best removal efficiencies were obtained at 100 and 12.6% for dye concentration and total organic carbon, respectively. Color removal efficiency was dependent on initial dye concentration and iron load. Moreover, the removal rates followed modified pseudo-first order kinetic equations with respect to dye concentration. Thus, the observed removal rate constants (k) were 0.137-0.756 min(-1) by NZVI loads of 4.9-50.8 mg g(-1). Consequently, the NZVI-resin performed effectively for the decoloration of AB 113 azo dye, offering great potential in the application of NZVI-resins in larger scale column tests and further field processes.
Shu
Hung-Yee
HY
Institute of Environmental Engineering, Hungkuang University, No. 34 Chung-Chie Rd., Shalu, Taichung County 433, Taiwan, ROC. Electronic address: hyshu@sunrise.hk.edu.tw.
Chang
Ming-Chin
MC
Institute of Environmental Engineering, Hungkuang University, No. 34 Chung-Chie Rd., Shalu, Taichung County 433, Taiwan, ROC.
Chen
Chi-Chun
CC
Institute of Environmental Engineering, Hungkuang University, No. 34 Chung-Chie Rd., Shalu, Taichung County 433, Taiwan, ROC.
Chen
Po-En
PE
Institute of Environmental Engineering, Hungkuang University, No. 34 Chung-Chie Rd., Shalu, Taichung County 433, Taiwan, ROC.
D001391:Azo Compounds / Q000737:chemistry*; D003116:Color; D004396:Coloring Agents / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D007700:Kinetics; D053768:Metal Nanoparticles; D008855:Microscopy, Electron, Scanning; D012996:Solutions
D001391:Azo Compounds; D004396:Coloring Agents; D012996:Solutions; C015967:Levanol Fast Cyanine 5RN; D007501:Iron