超声波与Triton X-100联合修复芘污染土壤的研究

发布时间：2018-03-26 00:43

本文选题：超声波　切入点：芘　出处：《环境科学与技术》2016年S2期

【摘要】：该文研究了超声波联合非离子表面活性剂Triton X-100修复芘污染土壤的效果及不同因素对修复效果的影响。结果表明:增加处理次数有助于提升土壤中芘的去除率,3次处理总去除率较1次处理提高了30%。Triton X-100浓度的增加,可提高污染土壤中芘的去除率,且Triton X-100浓度为10.0 g/L时较2.0 g/L时去除率提高了18.90%。水土比为12∶1时,芘去除率达到峰值,水土比过高或过低芘去除率都会降低。随着超声时间的增加去除率呈现先升高后降低的趋势,超声时间为20 min时,对土壤中浓度为0.4 g/kg的芘去除率达到最高的75.30%。相同条件下对低浓度芘污染土壤的处理效果好于高浓度污染土壤,芘浓度为0.1 g/kg的土壤去除率比1.0 g/kg的土壤上升了46.70%。该研究结果表明超声波和表面活性剂联合处理技术具有一定的应用于土壤修复的价值和潜力。
[Abstract]:The effect of ultrasonic wave combined with Triton X-100 on the remediation of pyrene contaminated soil and the effect of different factors on the remediation effect were studied. The results showed that increasing the number of treatments could increase the removal rate of pyrene 3 times in the soil. The total removal rate of the treatment increased the concentration of 30%.Triton X-100 compared with that of the first treatment. The removal rate of pyrene in polluted soil was increased by 18.90 when the concentration of Triton X-100 was 10.0 g / L, and the removal rate of pyrene reached the peak when the water / soil ratio was 12:1, and the removal rate of pyrene was 18.90 when the concentration of Triton X-100 was 10.0 g / L. With the increase of ultrasonic time, the removal rate of pyrene increased first and then decreased, when the ultrasonic time was 20 min, the removal rate of pyrene decreased. The removal rate of pyrene reached the highest of 75.30 when the concentration of pyrene in the soil was 0.4 g/kg. Under the same conditions, the treatment effect of low concentration pyrene contaminated soil was better than that of high concentration polluted soil. The results showed that the combined treatment of ultrasonic wave and surfactant was valuable and potential for soil remediation. The results showed that the removal rate of pyrene was 46.70% higher than that of 1.0 g/kg. The results showed that the combined treatment of ultrasonic wave and surfactant had a certain value and potential in soil remediation.
【作者单位】：东北林业大学林学院;
【基金】：国家自然科学基金资助项目(41201307) 国家级大学生创新创业训练项目(201510225077)
【分类号】：X53

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