几种含水介质中过硫酸钠去除苯系物/乙醇的效果和影响
Effects of sodium persulfate on benzene series/ ethanol removal in several aquifer media
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摘要: 为探究含水介质中过硫酸钠去除乙醇汽油主要组分苯系物(苯、甲苯、乙苯和二甲苯简称BTEX)和乙醇的效果,选用石灰土、玄武岩风化土、花岗岩风化土、白云石、河砂等5种不同特性的介质,在室温下开展批实验研究.结果表明,在自然条件下,乙醇的降解速率由大到小顺序为玄武岩风化土 > 石灰土 > 河砂 > 花岗岩风化土 > 白云石,乙醇容易被微生物降解且会阻碍BTEX的微生物降解;在单纯的化学氧化条件(灭菌)下,BTEX比乙醇更容易被过硫酸钠氧化去除.其中,石灰土和玄武岩风化土BTEX去除率分别为94.2%和97.6%,乙醇去除率分别为16.9%和37.0%;河砂、花岗岩风化土及白云石BTEX的去除率均大于99%,乙醇去除率在67.4%—73.6%之间.在未灭菌条件下,过硫酸钠化学氧化显著抑制玄武岩风化、花岗岩风化土、河砂中固有的微生物作用,但对石灰土介质的影响较小.介质固有的有机质以及过硫酸钠引起的pH降低,都会影响过硫酸钠对污染物的去除,而介质中铁氧化物的作用需要进一步评价.Abstract: In order to explore the effects of sodium persulfate on removal of benzene series(benzene, toluene, ethylbenzene and xylene are abbreviated as BTEX)and ethanol from groundwater contaminated by ethanol blended gasoline, a batch experiment was carried out at room temperature by using five kinds of media including lime soil, basalt weathered soil, granite weathered soil, dolomite and river sand. The results showed that the order of removal rates of ethanol was basalt weathered soil > lime soil > river sand > granite weathered soil > dolomite under natural condition. Ethanol was easy to be biodegraded and could hinder the biodegradation of BTEX. Under pure chemical oxidation condition (sterilized), BTEX was more easily to be removed by chemical oxidation than ethanol. Among them, the removal rates of BTEX in lime soil and basalt weathered soil were 94.2% and 97.6%, respectively, and the removal rates of ethanol were 16.9% and 37.0%, respectively. The removal rates of BTEX in river sand, granite weathered soil and dolomite were all over 99%, and the removal rates of ethanol were ranged from 16.9% to 73.6%. Under unsterilized condition, sodium persulfate significantly inhibited the intrinsic microbial action in basalt weathered soil, granite weathered soil and river sand, but had a little influence on lime soil medium. The inherent organic matter and the decrease of pH can affect the BTEX and ethanol removal in persulfate chemical oxidation, whereas the role of iron oxides contained in medium needs further evaluation.
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Key words:
- BTEX / ethanol /
- sodium persulfate /
- aquifer medium /
- chemical oxidation
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[1] 朱昌海,文翎.价格杠杆可助推乙醇汽油推广[J].中国石油企业,2017,(11):78. ZHU C H, WEN L. Price leverage promotes the promotion of ethanol gasoline[J]. China Petroleum Enterprise, 2017(11 ):78(in Chinese).
[2] 赵一,蓝芙宁,覃星铭,等.乙醇影响下汽油污染物在不同形态土壤有机质上的吸附[J].环境化学,2017,36(3):557-563. ZHAO Y, LAN F N, QIN X M, et al. Influence of ethanol on the adsorption of gasoline components on different soil organic matter forms[J]. Environmental Chemistry, 2017, 36(3):557-563(in Chinese).
[3] VILELA L S, TOLEDO D R, RUBINI A L, et al. Ethanol content in different gasohol blend spills influences the decision-making on remediation technologies.[J]. Journal of Environmental Management, 2018, 212(212):8-16. [4] TSITONAKI A, PETRI B, CRIMI M, et al. In situ chemical oxidation of contaminated soil and groundwater using persulfate:A review[J]. Critical Reviews in Environmental Science&Technology, 2010, 40(1):55-91. [5] 吴昊,孙丽娜,王辉,等.活化过硫酸钠原位修复石油类污染土壤研究进展[J].环境化学,2015,34(11):2085-2095. WU H, SUN L N, WANG H, et al. Persulfate In situ remediation of petroleum hydrocarbon contaminated soil[J]. Environmental Chemistry, 2015, 34(11):2085-2095(in Chinese).
[6] WACŁAWEK S, LUTZE H V, GRVBEL K, et al. Chemistry of persulfates in water and wastewater treatment:A review[J]. Chemical Engineering Journal, 2017, 330:44-62. [7] 阮晓昕,吕树光,缪周伟,等.磁铁矿活化过硫酸钠降解泥浆体系中的三氯乙烯[J].环境科学学报,2014,34(6):1489-1496. RUN X X, Lü S G, MIAO Z W, et al. Trichloroethylene degradation in soil slurry system by magnetite activated persulfate oxidation[J]. Acta Scientiae Circumstantiae, 2014, 34(6):1489-1496(in Chinese).
[8] LIU H, BRUTON T A, LI W, et al. Oxidation of benzene by persulfate in the presence of Fe (III)-and Mn (IV)-containing oxides:stoichiometric efficiency and transformation products[J]. Environmental Science&Technology, 2016, 50(2):890-898. [9] SATAPANAJARU T, CHOKEJAROENRAT C, SAKULTHAEW C, et al. Remediation and restoration of petroleum hydrocarbon containing alcohol-contaminated Soil by persulfate oxidation activated with soil minerals[J]. Water, Air,&Soil Pollution, 2017, 228(9):345. [10] ANDRADE L N, ARAUJO S F, MATOS A T, et al. Performance of different oxidants in the presence of oxisol:remediation of groundwater contaminated by gasoline/ethanol blend[J]. Chemical Engineering Journal, 2017, 308:428-437. [11] 潘勇军,陈余道,蒋亚萍,等.岩溶地下河入口洞穴固结土对BTEX吸附-解吸研究[J].环境科学与技术,2016,39(11):52-57. PAN Y J, CHEN Y D, JIANG Y P, et al. Adsorption/desorption of BTEX by consolidated soil collected from a karst underground river cave[J]. Environmental Science&Technology, 2016, 39(11):52-57(in Chinese).
[12] 梁月阐.影响高压蒸汽灭菌效果原因分析[J].医药前沿,2018,8(1):369-370. LIANG Y C. Analysis of the reasons affecting the sterilization effect of high pressure steam[J]. Journal of Frontiers of Medicine, 2018, 8(1):369-370(in Chinese).
[13] 童奇玲,蒋亚萍,陈余道.运用批实验研究溶解氧对米酒去除硝酸盐的影响[J].环境工程,2017,35(10):44-49. TONG Q L, JIANG Y P, CHEN Y D. Batch experiments for the effect of dissolved oxygen on nitrate removal with rice wine[J]. Environmental Engineering, 2017, 35(10):44-49(in Chinese).
[14] LIANG C, HUANG C F, MOHANTY N, et al. A rapid spectrophotometric determination of persulfate anion in ISCO[J]. Chemosphere, 2008, 73(9):1540-1543. [15] BEYLERIAN N M, KHACHATRIAN A G. The mechanism of the oxidation of alcohols and aldehydes with peroxydisulfate ion[J]. Chemischer Informationsdienst, 1985, 16(14):1937-1941. [16] 刘衡锡,张乃东,朱正江.硫酸自由基在水处理中的反应特性[J].科学通报,2012,57(36):3493-3499. LIU H X, ZHANG N D, ZHU Z J. Response characteristics of sulfate radicals in water treatment[J]. Chinese Science Bulletin, 2012, 57(36):3493-3499(in Chinese).
[17] SRA K S, THOMSON N R, BARKER J F. Persulfate treatment of dissolved gasoline compounds[J]. Journal of Hazardous Toxic&Radioactive Waste, 2013, 17(1):9-15. [18] LIU J, LIU Z, ZHANG F, et al. Thermally activated persulfate oxidation of NAPL chlorinated organic compounds:Effect of soil composition on oxidant demand in different soil-persulfate systems[J]. Water Science&Technology, 2017, 75(8):1794-1803. [19] TEEL A L, AHMAD M, WATTS R J. Persulfate activation by naturally occurring trace minerals[J]. Journal of Hazardous Materials, 2011, 196(1):153-159. [20] BACIOCCHI R, D"APRILE L, INNOCENTI I, et al. Development of technical guidelines for the application of in-situ chemical oxidation to groundwater remediation[J]. Journal of Cleaner Production, 2014, 77:47-55. [21] MA J, YANG Y, JIANG X. Impacts of inorganic anions and natural organic matter on thermally activated persulfate oxidation of BTEX in water[J]. Chemosphere, 2018, 190:296-306. [22] 黄传琴,熊娟,常明慧,等.土壤腐殖酸与碳酸盐相互作用过程研究[J].华中农业大学学报,2018,37(6):58-65. HUANG C C,XIONG J,CHANG M H, et al. Interaction process between soil humic substance and carbonate[J]. Journal of Huazhong Agricultural University, 2018, 37(6):58-65(in Chinese).
[23] IOANNIDI A, FRONTISTIS Z, MANTZAVINOS D. Destruction of propyl paraben by persulfate activated with UV-A light emitting diodes[J]. Journal of Environmental Chemical Engineering, 2018, 6(2):2992-2997. [24] GUPTA S S, GUPTA Y K. Hydrogen ion dependence of the oxidation of iron (II) with peroxydisulfate in acid perchlorate solutions[J]. Cheminform, 1981, 12(17):454-457. [25] HOUSE D A. Kinetics and mechanism of oxidation by peroxydisulfate[J]. Chemical Reviews, 1961, 62(3):185-203. [26] CHEN K F, CHANG Y C, CHIOU W T. Remediation of diesel-contaminated soil using in situ chemical oxidation (ISCO) and the effects of common oxidants on the indigenous microbial community:A comparison study[J]. Journal of Chemical Technology&Biotechnology, 2016, 91(6):1877-1888. [27] BVYVKSÖNMEZ F, HESS T F, CRAWFORD R L, et al. Toxic effects of modified fenton reactions on, xanthobacter flavus FB71[J]. Applied&Environmental Microbiology, 1998, 64(10):3459-3764. [28] KAKOSOVÁ E, HRABÁK P, CERNÍK M, et al. Effect of various chemical oxidation agents on soil microbial communities[J]. Chemical Engineering Journal, 2017, 314:257-265.
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