油页岩灰基磁性分子筛的制备及其对亚甲基蓝的吸附性能

段玉, 王倩, 刘宏臣, 车远军, 石磊, 白慧娟

Methylene Blue Adsorption Performance of Magnetic Zeolite Prepared from Oil Shale Ash

DUAN Yu, WANG Qian, LIU Hongchen, CHE Yuanjun, SHI Lei, BAI Huijuan

表3 Fe3O4@NaX型分子筛吸附MB的动力学参数

Table 3 Kinetics parameters for MB adsorption on the Fe3O4@NaX zeolite

Models Temperature 25 oC 35 oC 45 oC 55 oC 65 oC Experiment qe,exp / mg·g-1 47.80 45.07 52.38 52.38 50.94 Pseudo-first-order qe,cal / mg·g-1 5.64 4.68 4.02 3.80 4.41 k1 / min-1 0.0115 0.0094 0.0085 0.0042 0.0041 R2 0.6108 0.4593 0.2464 0.3032 0.2157 Pseudo-second-order qe,cal / mg·g-1 46.32 43.42 50.63 49.85 47.78 k2 / g·mg-1·min-1 0.0237 0.0339 0.0599 0.1242 0.6337 R2 0.9999 0.9999 0.9999 0.9999 0.9997 Intraparticle diffusion c / mg·g-1 39.50 37.98 45.76 47.64 45.48 kp / mg·g-1·min-1/2 0.0115 0.0094 0.0085 0.0042 0.0041 R2 0.6079 0.4797 0.4130 0.4876 0.4487