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以原竹为材料,经过浸泡、粉碎、干燥等步骤制得竹原纤维,并探讨了竹原纤维作为吸附剂对水体中Pb(Ⅱ)的吸附性能.利用扫描电镜(SEM),红外光谱仪(FT-IR)对竹原纤维的微观形貌以及化学结构进行了观察和分析;并考察了溶液p H值、温度和Pb(Ⅱ)初始浓度对竹原纤维吸附性能的影响;研究了竹原纤维对Pb(Ⅱ)的吸附动力学模型以及数率方程拟合.研究结果表明,竹原纤维表面粗糙、有突起和裂片,有利于竹原纤维对Pb(Ⅱ)的吸附;当溶液p H=5.0,温度为323K,初始浓度为80 mg/L时,竹原纤维对Pb(Ⅱ)吸附效果最佳;竹原纤维对Pb(Ⅱ)的吸附符合二级动力学模型.
Taking bamboo as raw material, bamboo fiber was obtained through steps of soaking, grinding and drying, and the adsorption of Pb (Ⅱ) by bamboo fiber as adsorbent was discussed.Using scanning electron microscopy (SEM), infrared spectroscopy (FT- IR) was used to observe and analyze the micro-morphology and chemical structure of bamboo fiber. The effects of p H value, temperature and initial concentration of Pb (Ⅱ) on bamboo fiber adsorption were investigated. The effects of bamboo fiber on Pb (Ⅱ) ) Adsorption kinetics model and numerical rate equation fitting.The results show that bamboo fiber surface roughness, protrusions and lobes, is conducive to bamboo fiber adsorption of Pb (Ⅱ); when the solution p H = 5.0, the temperature is 323K, When the initial concentration was 80 mg / L, bamboo fiber had the best adsorption effect on Pb (Ⅱ). The adsorption of Pb (Ⅱ) by bamboo fibril accords with the second-order kinetic model.