摘要
花生壳中富含的大量的纤维素,对于重金属离子具有相当程度的吸附性。试验依据重金属离子最初浓度、吸附时的温度、吸附需要的时间、试验吸附剂的用量的改变,以及整合pH酸碱度等多方面因素的影响,通过数据分析和图解趋势分析得出改性花生壳吸附重金属离子Pb~(2+)的最佳条件和最高性能,并将试验结果作为学界进行研究发展的参考与借鉴。试验证明:当温度在60℃时,在pH 7的情况下,加入0.800 0 g的改性花生壳吸附剂对50 mL初始质量浓度为50 mg/L的Pb~(2+)溶液吸附90 min时,效果最佳,达到最佳吸附条件时的平衡吸附率为97.13%,吸附容量为3.02 mg/g。
A large amount of cellulose was abundant in peanut shells, which had a considerable degree of adsorption for heavy metal ions. The experiments based on the initial concentration of heavy metal ions, the temperature of adsorption, the time required for adsorption, the change of the amount of experimental adsorbent, the integration of pH and other factors, through the data analysis and graphical trend analysis to obtain modified peanut shells optimum conditions and highest performances of heavy metal ions Pb~(2+) were adsorbed, and the experimental results were used as reference and reference for the research and development of the academic circle. The experiment proves that when the temperature was 60 ℃, at the pH 7, adding 0.800 0 g of modified peanut shell adsorbent to 50 mL of Pb~(2+) solution with initial concentration of 50 mg/L for 90 min, the best effect was achieved. The equilibrium adsorption rate at the adsorption condition was 97.13%, and the adsorption capacity was 3.02 mg/g.
引文
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