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    GUO Bin,LONG Fei,WANG Xin,GUO Yuanming.Optimization of microwave remediation of naphthalene contaminated soil by response surface methodology[J].Journal of Hebei University of Science and Technology,2020,41(6):557-564
    響應面法優化微波修復萘污染土壤工藝參數的研究
    Optimization of microwave remediation of naphthalene contaminated soil by response surface methodology
    Received:September 26, 2020  Revised:October 29, 2020
    DOI:10.7535/hbkd.2020yx06011
    中文關鍵詞:  土壤環境學  土壤修復  石油污染  微波  響應面法  
    英文關鍵詞:environmetal agrology  soil remediation  petroleum pollution  microwave  response surface methodology  naphthalene
    基金項目:河北省重點研發計劃項目(19273813D,173976121D)
    Author NameAffiliationE-mail
    GUO Bin School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang;Hebei Province Solid Waste Recycling Technology Innovation Center, Shijiazhuang Gbin69@163.com 
    LONG Fei School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang;Hebei Province Solid Waste Recycling Technology Innovation Center, Shijiazhuang  
    WANG Xin School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang;Hebei Province Solid Waste Recycling Technology Innovation Center, Shijiazhuang  
    GUO Yuanming School of Environmental and Biological Engineering, Nanjing University of Science & Technology, Nanjing  
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    中文摘要:
          為了探究石油污染土壤微波修復最適宜的工藝參數,選取石油污染土壤中典型的半揮發性有機物萘(naphthalene,NAP)為目標污染物,以模擬萘污染的土壤為供試土壤,采用微波(f=2.45 GHz)對其進行修復。在單因素試驗基礎上,采用響應面法Box-Behnken實驗設計,以NAP去除率為響應值,建立了以微波功率、輻照時間、土層厚度和土壤含水率為影響因子的二次多元回歸模型。結果表明:模型經方差分析(ANOVA)結果達到極顯著水平,其中微波功率的影響最為顯著;得到最佳的工藝參數為微波功率768 W、輻照時間19 min、土層厚度3.2 cm、含水率16%,此條件下NAP去除率為97.3%;驗證實驗結果NAP去除率為97.0%,與模型預測結果僅偏差0.31%。利用響應面法優化的微波修復NAP污染土壤的工藝參數合理可行,研究結果可為微波土壤修復技術的工業化應用提供數據支持。
    英文摘要:
          In order to study the best technology of remediation of petroleum contaminated soil, naphthalene (NAP), a typical semi volatile organic compounds in petroleum contaminated soil was selected as the target pollutant, the simulated NAP contaminated soil was taken as the test soil, and the microwave(f=2.45 GHz) was used to restore the soil. On the basis of single factor experiment, the Box-Behnken experiment design of response surface method was adopted, and the removal rate of NAP was taken as the response value. A quadratic multiple regression model was established with microwave power, irradiation time, soil thickness and soil moisture content as the influencing factors. The ANOVA model reached a very significant level, in which the microwave power had the most significant effect. The best process parameters were obtained as follows: the wave power was 768 W, the irradiation time was 19 min, the soil thickness was 3.2 cm, the water content was 16%, and the removal rate of NAP was 97.3% under these conditions. The verification results show that the removal rate of NAP is 97.0%, which is only 0.31% different from the predicted results. The process parameters optimized by response surface methodology are reasonable and feasible, which may provide some reference for the industrial application of microwave remediation of soil.
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