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以改性指甲花叶对Cr(Ⅵ)的吸附率作为评价值标,采用紫外-可见分光光度法,利用单因素实验和正交试验考察吸附时间、吸附温度、pH和吸附剂用量等吸附条件对改性指甲花叶吸附Cr(Ⅵ)离子效率的影响。实验结果表明,改性指甲花叶对Cr(Ⅵ)的最佳吸附条件为:吸附时间40min,吸附温度50℃,吸附pH=3.0,吸附剂用量0.4000g,在此条件下吸附率高达99.22%。
The adsorption rate of Cr (¢ ö) on modified henna leaves was taken as the evaluation standard, and the adsorption conditions such as adsorption time, adsorption temperature, pH and the amount of adsorbent were investigated by UV-Vis spectrophotometry and single factor experiments and orthogonal experiments Effect of Adsorption of Cr (Ⅵ) on Modified Henna Leaf. The experimental results showed that the optimum adsorption conditions for Cr (Ⅵ) were as follows: adsorption time 40min, adsorption temperature 50 ℃, adsorption pH = 3.0, adsorbent dosage 0.4000g, the adsorption rate was 99.22% .