MECHANOCHEMICAL REMEDIATION OF NON-DEGRADABLE PYRENE CONTAMINATED SOIL
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摘要: 利用机械力化学法修复多环芳烃污染土壤,以四环芳烃芘为代表污染物,研究了球磨时间和球磨转速对土壤中芘去除率的影响。当球磨时间为6 h,球磨速度为500 r/min时,土壤中芘去除率为93.78%。利用SiO2作为模拟土壤,通过对球磨前后模拟土壤的GC-MS、红外光谱和拉曼光谱分析,探索芘的降解途径和机理。机械力化学修复过程中,芘的苯环被破坏,部分中间产物为环数较少的多环芳烃(PAHs)、碳链较短的烷烃,还有部分被碳化成石墨和不定形碳。利用机械力化学法对实际污染土壤进行修复,修复后土壤中芘和荧蒽浓度分别为21.45,35.68 mg/kg。机械力化学法修复多环芳烃污染土壤具有可行性和广泛的应用前景。Abstract: Mechanochemical methods were used to remediate polycyclic aromatic hydrocarbons(PAHs) contaminated soil. The effects of ball-milling time and ball-milling speed on the removal rate of pyrene in soil were studied. When the milling time was 6 h and the milling speed was 500 r/min, the removal rate of pyrene in the soil was 93.78%. The synthetic soil samples using SiO2 before and after ball milling were analyzed by GC-MS, FT-IR spectra and Raman spectra. The degradation pathway and mechanism of pyrene were revealed as follows: the benzene rings of pyrene were destroyed, and some of the intermediate products were PAHs with fewer benzene rings and alkanes with shorter carbon chains, and some were carbonized into graphite and amorphous carbon. The residual concentration of pyrene and fluoranthene in soil was 21.45, 35.68 mg/kg when the site contaminated soil was remediation by mechanochemical method. Mechanochemical method provides a possible method and considerable application prospect in remediation of PAHs contaminated soil.
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Key words:
- mechanochemical methods /
- PAHs /
- soil remediation /
- degradation pathway
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[1] 马强,林爱军,马薇,等.土壤中总石油烃污染(TPH)的微生物降解与修复研究进展[J].生态毒理学报,2008,3(1):1-8. [2] 杨勇,张蒋维,陈恺,等.化学氧化法治理焦化厂PAHs污染土壤[J].环境工程学报,2016,10(1):427-431. [3] 佚名.全国土壤污染状况调查公报[N].国土资源报,2014-04-18. [4] 钱林波,元妙新,陈宝梁,等.固定化微生物技术修复PAHs污染土壤的研究进展[J].环境科学,2012,33(5):1767-1776. [5] 陆光华,万蕾,苏瑞莲,等.石油烃类污染土壤的生物修复技术研究进展[J].生态环境,2003,12 (2):220-223. [6] KUPPUSAMY S,THAVAMANI P,VENKATESWARLU K,et al.Remediation approaches for polycyclic aromatic hydrocarbons (PAHs) contaminated soils:technological constraints,emerging trends and future directions[J].Chemosphere,2017,168:944-968. [7] TAKACS L.The historical development of mechanochemistry[J].Chemical Society Reviews,2013,42(18):7649-7659. [8] SUI H,RONG Y Z,SONG J,et al.Mechanochemical destruction of DDTs with Fe-Zn bimetal in a high-energy planetary ball mill[J].Journal of Hazardous Materials,2018,342:201-209. [9] NOMURA YUGO,NAKAI SATOSHI,HOSOMI MASAAKI.Elucidation of degradation mechanism of dioxins during mechanochemical treatment[J].Environmental Science & Technology,2005,39(10):3799-3804. [10] ZHAO Z H,NI M J,LI X D,et al.Combined mechanochemical and thermal treatment of PCBs contaminated soil[J].RSC Advances,2017,7(34):21180-21186. [11] TANAKA YASUMITSU,ZHANG Q W,FUMIO SAITO,et al.Dependence of mechanochemically induced decomposition of mono-chlorobiphenyl on the occurrence of radicals[J].Chemosphere,2005,60(7):939-943. [12] IN WOOK NAH,KYUNG-YUB HWANGYONG-GUN SHUL.Effect of metal and glycol on mechanochemical dechlorination of polychlorinated biphenyls (PCBs)[Chemosphere,2008,73(1):138-141. [13] TONGAMP WILLLIAM,ZHANG Q W,SAITO FUMIO.Mechanochemical decomposition of PVC by using La2O3 as additive[J].Journal of Hazardous Materials,2006,137(2):1226-1230. [14] ZHANG Q W,MATSUMOTO HIROKI,SAITO FUMIO,et al.Debromination of hexabromobenzene by its co-milling with CaO[J].Chemosphere,2002,48(8):787-793. [15] PAOLA DI LEO,MARIA DONATA R PIZZIGALLO,VALERIA ANCONA,et al.Mechanochemical degradation of pentachlorophenol onto birnessite[J].Journal of Hazardous Materials,2013,303(10):244-245. [16] HUANG J,WANG H Z,ZHANG S Y,et al.Study of degradation mechanism of dechlorane plus by mechanochemical reaction with aluminum and quartz sand[J].Chemical Engineering Journal,2016,292:98-104. [17] SHU SAEKI,LEE JAERYEONG,ZHANG Q W,et al.Co-grinding LiCoO2 with PVC and water leaching of metal chlorides formed in ground product[J].International Journal of Mineral Processing,2004,74:373-378. [18] ZHANG Q W,MATSUMOTO HIROKI,SAITO FUMIO,et al.Debromination of hexabromobenzene by its co-grinding with CaO[J].Chemosphere,2002,48(8):787-793. [19] WANG N,LV H Q,ZHOU Y Q,et al.Complete defluorination and mineralization of perfluorooctanoic acid by a mechanochemical method using alumina and persulfate[J].Environmental Science & Technology,2019,53(14):8302-8313. [20] 张冬格,隋红,宋静,等.CaO机械化学法去除土壤中DDTs的工艺参数优化[J].环境科学研究,2016,29(9):1336-1343. [21] 毛琼晶,陆胜勇,卫樱蕾,等.水平球磨机械化学法处置多氯联苯污染土壤的试验[J].环境化学,2016,35(4):607-614. [22] WANG H Z,HUANG J S,HUANG J,et al.Mechanochemical remediation of PCB contaminated soil[J].Chemosphere,2017,168:333-340. [23] LI X Y,KONG L X,LIN X,et al.The effect of concentrations and properties of phenanthrene,pyrene,and benzo(a)pyrene on desorption in contaminated soil aged for 1 year[J].Journal of Soil & Sediments,2013,13(2):375-382. [24] YAN J H,PENG Z,LU S Y,et al.Degradation of PCDD/Fs by mechanochemical treatment of fly ash from medical waste incineration[J].Journal of Hazardous Materials,2007,147(1):652-657. [25] 占新华,周立祥,杨红,等.水溶性有机物与多环芳烃结合特征的红外光谱学研究[J].土壤学报,2007,44(1):47-53. [26] 孙振亚,陈和生,邵景昌.八种不同来源二氧化硅的红外光谱特征研究[J].硅酸盐通报,2011,30(4):934-937. [27] ZHANG W,HUANG J,XU F Y,et al.Mechanochemical destruction of pentachloronitrobenzene with reactive iron powder[J].Journal of Hazardous Materials,2011,198:275-281. [28] CAGNETTA G,ROBERTSON J,HUANG J,et al.Mechanochemical destruction of halogenated organic pollutants:a critical review[J].Journal of Hazardous Materials,2016,313:85-102. [29] LESLIE D.FIELD,SEVER STERNHELL HOWARD V.Wilton.Mechanochemistry of some hydrocarbons[J].Tetrahedron,1997,53(11):4051-4062. [30] ZHANG W,WANG H Z,HUANG J,et al.Acceleration and mechanistic studies of the mechanochemical dechlorination of HCB with iron powder and quartz sand[J].Chemical Engineering Journal,2014,239:185-191. [31] MASAHIRO HASEGAWA,TATEAKI OGATA,MASATAKE SATO.Mechano-radicals produced from ground quartz and quartz glass[J].Powder Technology,1995,85:269-274. [32] FAN G,LIU X,LI X,et al.Mechanochemical treatment with CaO-activated PDS of HCB contaminated soils[J].Chemosphere,2020,257:127207.
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