本文選題：超聲波　切入點(diǎn)：芘　出處：《環(huán)境科學(xué)與技術(shù)》2016年S2期

【摘要】：該文研究了超聲波聯(lián)合非離子表面活性劑Triton X-100修復(fù)芘污染土壤的效果及不同因素對(duì)修復(fù)效果的影響。結(jié)果表明:增加處理次數(shù)有助于提升土壤中芘的去除率,3次處理總?cè)コ瘦^1次處理提高了30%。Triton X-100濃度的增加,可提高污染土壤中芘的去除率,且Triton X-100濃度為10.0 g/L時(shí)較2.0 g/L時(shí)去除率提高了18.90%。水土比為12∶1時(shí),芘去除率達(dá)到峰值,水土比過高或過低芘去除率都會(huì)降低。隨著超聲時(shí)間的增加去除率呈現(xiàn)先升高后降低的趨勢(shì),超聲時(shí)間為20 min時(shí),對(duì)土壤中濃度為0.4 g/kg的芘去除率達(dá)到最高的75.30%。相同條件下對(duì)低濃度芘污染土壤的處理效果好于高濃度污染土壤,芘濃度為0.1 g/kg的土壤去除率比1.0 g/kg的土壤上升了46.70%。該研究結(jié)果表明超聲波和表面活性劑聯(lián)合處理技術(shù)具有一定的應(yīng)用于土壤修復(fù)的價(jià)值和潛力。
[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.
【作者單位】： 東北林業(yè)大學(xué)林學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(41201307) 國家級(jí)大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練項(xiàng)目(201510225077)
【分類號(hào)】：X53

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本文編號(hào)：1665587