不同条件对小麦秸秆粉吸附硝基苯的影响

Effects of Different Conditions on the Absorption Ability to Nitrobenzene of Wheat Straw Powder

通过考察时间、温度、初始pH、硝基苯初始浓度、小麦秸秆粉粒径和用量对硝基苯静态吸附的影响,探讨了小麦秸秆粉作为一种廉价吸附剂的可行性。结果表明,粒径为150～380μm的小麦秸秆粉对硝基苯的去除效果最好,吸附平衡时间约为60 min,硝基苯的吸附随温度的升高而增加,pH影响较小。

The possibility of using wheat straw powder as a low-cost adsorbent to remove nitrobenzene（NB） from aqueous solution was discussed by investigating the effects of particle size,time,temperature,pH,dose and initial concentration on its static absorption ability.The results showed that the optimum particle size of wheat batch was 150～380 μm,the equilibration absorption time was about 60 min.Adsorption ability of wheat straw batch increased with temperature increasing;while pH had little effect.