污染土壤中多环芳烃热解吸影响因素研究

石油炼制与化工 ›› 2018, Vol. 49 ›› Issue (4): 89-93.

污染土壤中多环芳烃热解吸影响因素研究

李磊,李怿,王龙延,王乾,白正伟

中国石化炼化工程集团洛阳技术研发中心

收稿日期:2017-10-19 修回日期:2017-11-29 出版日期:2018-04-12 发布日期:2018-04-26
通讯作者: 李磊 E-mail:t-lilei.lpec@sinopec.com
基金资助:

INFLUENCE FACTORS ON THERMAL DESORPTION OF PAHs FROM CONTAMINATED SOIL

Received:2017-10-19 Revised:2017-11-29 Online:2018-04-12 Published:2018-04-26
Contact: Lei Li E-mail:t-lilei.lpec@sinopec.com
Supported by:

摘要/Abstract

摘要： 以某污染场地多环芳烃污染土壤为原料，考察了热解吸修复温度、时间、土壤粒径等对污染土壤中超标多环芳烃热解吸效率的影响，并对各粒径土壤热解吸数据进行了一级动力学拟合，得到了反应速率常数k。实验结果表明：处理温度越高、时间越长，热解吸效果越好；土壤粒径越小，土壤中的多环芳烃热解吸速率越快。对热解吸系统的设计具有实际意义，有利于节能降耗和工艺优化。

关键词: 多环芳烃, 污染场地, 土壤修复, 热解吸

Abstract: The effects of temperature, time and soil particle size on the thermal desorption efficiency of super-standard polycyclic aromatic hydrocarbons in contaminated soil were investigated. The reaction rate constant K was obtained by the first order kinetic fitting of pyrolysis desorption data for the soils with different particle sizes. Results showed that desorption efficiency is affected by the soil texture and that temperature and time of treatment are the key factors in remedial process. Smaller soil particle size, higher reaction temperature, and longer treatment time are beneficial to desorption of PAHs from soil. These results are of practical interest and may be used in designing desorption systems with low energy consumption.

Key words: PAHs, contaminated site, soil remediation, thermal desorption

中图分类号:

李磊李怿王龙延王乾白正伟. 污染土壤中多环芳烃热解吸影响因素研究[J]. 石油炼制与化工, 2018, 49(4): 89-93.

参考文献

[1] 黄擎, 李发生, 桂明英.石油污染场地土壤中多环芳烃的赋存和分布[J].哈尔滨工业大学学报, 2009, 41(10):142-145 [2]杨茜, 吴蔓莉, 聂麦茜.石油污染土壤的生物修复技术及微生物生态效应[J].环境科学, 2015, 36(5):1856-1863 [3]Bezza Fisseha Andualem, Chirwa Evans M.Nkhalambayausi,The role of lipopeptide biosurfactant on microbial remediation of aged polycyclic aromatic hydrocarbons (PAHs)-contaminated soil[J].Chemical Engineering Journal, 2017, 309(Supplement C):563-576 [4] Ghosal Debajyoti, Ghosh Shreya, Dutta Tapan K, et al.,. Current State of Knowledge in Microbial Degradation of Polycyclic Aromatic Hydrocarbons (PAHs): A Review[J].Frontiers in Microbiology, 2016, 7(1369):1-27 [5]Falciglia Pietro P.De Guidi Guido,Catalfo Alfio,et al,Remediation of soils contaminated with PAHs and nitro-PAHs using microwave irradiation[J].Chemical Engineering Journal, 2016, 296(Supplement C):162-172 [6]Yao Y.Huang GH.,An C. J.,et al.,Effects of freeze-thawing cycles on desorption behaviors of PAH-contaminated soil in the presence of a biosurfactant: a case study in western Canada[J].Environmental Science: Processes & Impacts, 2017, 19(6):874-882 [7]Mousset Emmanuel, Huguenot David, van Hullebusch Eric D.et al,Impact of electrochemical treatment of soil washing solution on PAH degradation efficiency and soil respirometry[J].Environmental Pollution, 2016, 211(Supplement C):354-362 [8]马福俊, 丛鑫, 张倩.模拟水泥窑工艺对污染土壤热解吸尾气中六氯苯的去除效果[J].环境科学研究, 2015, 28(8):1311-1316 [9] 庄相宁, 许端平, 谷庆宝.土壤中HCHs热解吸动力学研究[J].安全与环境学报, 2014, 14(3):251-255 [10]Cook Charles A.Cundy Vic A,Larsen Fred L.,et al.,A comprehensive heat transfer model for rotary desorbers[J].Canadian Journal of Chemical Engineering, 1996, 74(1):63-76 [11]Gao Yan Fei, Yang Hong, Xin Hua Zhan, et al.Scavenging of BHCs and DDTs from soil by thermal desorption and solvent washing[J].Environmental Science & Pollution Research, 2013, 20(3):1482-1492 [12]朱杰.苯系物污染土壤气相抽提处理试验[J].环境化学, 2013, 32(9):1646-1652 [13]Falciglia P.P.,Giustra MG.,Vagliasindi F. G.,Low-temperature thermal desorption of diesel polluted soil: influence of temperature and soil texture on contaminant removal kinetics[J].Journal of Hazardous Materials, 2010, 185(1):392-400 [14]Araruna Jr J.T.,Portes VL. O.,Soares A. P. L.,et al.,Oil spills debris clean up by thermal desorption[J].Journal of hazardous materials, 2004, 110(1–3):161-171 [15]Qi Zhifu, Chen Tong, Bai Sihong, et al.Effect of temperature and particle size on the thermal desorption of PCBs from contaminated soil[J].Environ Sci Pollut Res Int, 2014, 21(6):4697-4704 [16]Falciglia P.P.,Giustra MG.,Vagliasindi F. G. A.,Soil texture affects adsorption capacity and removal efficiency of contaminants in ex situ remediation by thermal desorption of diesel-contaminated soils[J].Chemistry and Ecology, 2011, 27(sup1):119-130 [17]Marline T.Smith ?,Franco Berruti,? and,Mehrotra? Anil K,Thermal Desorption Treatment of Contaminated Soils in a Novel Batch Thermal Reactor[J].Industrial & Engineering Chemistry Research, 2001, 40(23):5421-5430