A novel nanocrystalline zeolite X (nZX) was synthesized using coal fly ash of eastern India for adsorptive removal of a textile dye—crystal violet (CV) from aqueous solution. nZX was characterized by TEM, XRF, FESEM, XRD, FTIR, and BET. The nZX has a surface area, an average crystal size, an average particle size, crystallinity, and product yield of 651.34 m²/g, 16.28 nm, 27.28 nm, 82% and 91% respectively. A maximum of 99.52% CV was removed at optimized condition of pH 9, 60 min contact time, 50 °C temperature, 100 mg/L initial dye concentration and 1.0 g/L adsorbent mass. A high correlation coefficient (R² = 0.998) good agreement between the predicted and experimental values. The maximum Langmuir adsorption capacity of 234.57 mg/g was obtained. The adsorption of CV followed a pseudo-second order kinetic model. The synthesized nZX was also found to be very efficient up to five regenerative cycle in removing the dye. Therefore, the synthesized nZX could be utilized for efficient removal of CV dye in real wastewater.

使用印度东部的粉煤灰合成了一种新型的纳米晶沸石X（nZX），用于从水溶液中吸附去除纺织染料-结晶紫（CV）。通过TEM，XRF，FESEM，XRD，FTIR和BET对nZX进行表征。nZX的表面积，平均晶体尺寸，平均粒径，结晶度和产物产率分别为651.34m ² /g、16.28nm、27.28nm、82％和91％。在pH 9，最佳接触时间，60分钟接触时间，50°C温度，100 mg / L初始染料浓度和1.0 g / L吸附剂质量的优化条件下，去除的最高99.52％CV。高相关系数（R ² = 0.998）预测值和实验值之间的良好一致性。获得的最大朗缪尔吸附容量为234.57 mg / g。CV的吸附遵循伪二级动力学模型。还发现合成的nZX在去除染料方面非常有效，长达五个再生周期。因此，合成的nZX可用于有效去除实际废水中的CV染料。