改性油页岩残渣对苯胺的吸附性能研究

为探讨油页岩矿山开采加工过程中产生的油页岩残渣环保利用的新途径,在油页岩残渣改性的基础上,研究了其对有机污染物苯胺的吸附作用。利用NaOH对油页岩残渣进行改性,设计正交试验优化了改性油页岩残渣吸附苯胺的最佳条件。其试验结果表明:在改性油页岩残渣粒径为0.01 mm、振荡速度为100 r/min、改性油页岩残渣用量为2 g/100 mL、温度10℃、pH7、吸附时间为40 min的最优化条件下,对初始质量浓度为20 mg/L苯胺的去除率可达83.92%。同时,绘制了改性油页岩残渣吸附苯胺的吸附等温性,其吸附过程与Langmuir和Freundlich吸附等温线拟合。

Adsorption of aniline from aqueous solutions by modified oil shale residue

A new way of environment protection is making use of oil shale residue produced by oil shale mining and processing. On base of modified oil shale residue, the effect on adsorption of aniline, an organic pollutant, is studied. To test the effectiveness of modified oil shale residue as an aniline adsorbent, the article designs an orthogonal test to optimize the adsorption conditions of oil shale residue modified by sodium hydroxide. The results showed that there were optimal conditions which could make up to a removal percentage of aniline of 83.92 % , when the residue diameter was 0.01 ram, the dosage 2 g/100 mL, the absorbing time 40 min with the vibration frequency of 100 r/min, pH 7 On the temperature of 10℃ and the initial mass intensity 20 mg/L. Also, the adsorption isotherm of modified oil shale residue on aniline was drawn which illustrated that the adsorption process was fit to Langmuir iso- therm model and Freundlich isotherm model.