有机氯代烃在壤土中的吸附和解吸特性

doi:10.13278/j.cnki.jjuese.201505206

摘要/Abstract

摘要：

选取三氯乙烯(TCE)、顺-1,2-二氯乙烯(cis-1,2-DCE)、1,1,1-三氯乙烷(1,1,1-TCA)、1,2-二氯乙烷(1,2-DCA)4种常见的有机氯代烃,通过批次实验研究其在壤土中的吸附和解吸特性。结果表明:4种有机氯代烃在壤土中的吸附平衡时间约为3 d;在本文研究的整个浓度范围内,4种有机氯代烃的吸附等温线基本呈线性趋势,但更符合Freundlich模型。对于有机氯乙烯而言,TCE在壤土中的吸附特性较为显著,线性分配系数K_d为0.624 L/kg,其次是cis-DCE,K_d为0.238 L/kg;对于有机氯乙烷而言,1,1,1-TCA在壤土中的吸附特性较为显著,K_d为0.520 L/kg,其次是1,2-DCA,K_d为0.353 L/kg。这进一步表明4种有机氯代烃化合物在壤土中的吸附特性与化合物本身的疏水性有关。通过Abdul、Dobbs、Rao和Cong经验公式估算lgK_oc值发现,Abdul估算所得lgK_oc比实测值偏小,Cong估算lgK_oc比实测值偏大,Dobbs和Rao与实测值更为接近;说明 Dobbs和Rao经验公式更适用于预测有机氯代烃化合物在壤土的吸附特性。另外,研究发现有机氯代烃的解吸过程具有明显的滞后性,吸附特性较强的物质,其解吸较为缓慢。

关键词: 有机氯代烃, 壤土, 1, 2-二氯乙烷, 顺-1, 2-二氯乙烯, 吸附, 解吸

Abstract:

The sorption and desorption characteristics of the four organic chlorinated hydrocarbons (trichloroethylene (TCE), cis-1,2-dichloroethylene (cis-1,2-DCE), 1,1,1-trichloroethane (1,1,1-TCA), and 1,2-dichloroethane (1,2-DCA)) onto loam soil are investigated by a batch of experiments in this study. The results indicate that the sorption equilibrium time of the four chlorinated hydrocarbons onto the loam soil is about three days. The sorption isotherm for all compounds is nearly linear, and fits to Freundlich isotherm slightly over the entire concentration range. As for chloroethylenes, TCE is strongly sorbed to the loam samples (K_d = 0.624 L/kg), and followed by cis-DCE (K_d = 0.238 L/kg). For chloroethanes, 1,1,1-TCA is strongly sorbed (K_d=0.520 L/kg), and followed by 1,2-DCA (K_d=0.353 L/kg). This is consistent with the order of hydrophobicity of the compounds. In addition, the lgK_oc value is estimated by Abdul, Dobbs, Rao and Cong empirical regression formula respectively in this study, and the results show that the estimated lgK_oc value determined by Abdul regression is significantly lower than the calculated value, and the estimated lgKoc value determined by Cong regression is significantly higher than the calculated value, while the estimated lgK_oc values determined by Dobbs and Rao regression are much closer to the calculated values. This demonstrates that the Dobbs and Rao regression is more suitable for lgK_oc estimation for chlorinated hydrocarbons. Besides, it is found that there is a certain lag in desorption of chlorinated hydrocarbons from the loam soil; and the higher the sorption capacity of chlorinated hydrocarbon, the lower the desorption capacity of chlorinated hydrocarbon.

Key words: chlorinated hydrocarbons, loam soil, 1, 2-DCA, cis-1, 2-DCE, sorption, desorption

中图分类号:

X523

张凤君, 贾晗, 刘佳露, 董佳新, 卢伟, 吕聪. 有机氯代烃在壤土中的吸附和解吸特性[J]. 吉林大学学报(地球科学版), 2015, 45(5): 1515-1522.

Zhang Fengjun, Jia Han, Liu Jialu, Dong Jiaxin, Lu Wei, Lü Cong. Sorption and Desorption of Chlorinated Hydrocarbons onto Loam Soil[J]. Journal of Jilin University(Earth Science Edition), 2015, 45(5): 1515-1522.

参考文献

[1] Doherty R E. A History of the Production and Use of Carbon Tetrachloride, Tetrachloroethylene, Trichloroethylene and 1,1,1-Trichloroethane in the United States: Part 1:Historical Background; Carbon Tetrachloride and Tetrachloroethylene[J]. Environmental Forensics, 2000, 1(2): 69-81.

[2] 丁培杰, 王秀娟. 三氯乙烯、四氯乙烯生产技术及市场分析[J]. 氯碱工业, 2012, 48(12): 1-5. Ding Peijie, Wang Xiujuan. Production Technologies and Market Analysis of Trichloroethylene,Tetrachloroethylene[J]. Chlor-Alkali Industry, 2012, 48(12): 1-5.

[3] 康春莉, 何冲, 熊鹰, 等. 典型石油烃组分在地下水中的自然衰减规律[J]. 吉林大学学报:地球科学版, 2012, 42(1):206-211. Kang Chunli, He Chong, Xiong Ying, et al. Natural Attenuation of the Typical Petroleum Hydrocarbons in Aquifer[J]. Journal of Jilin University :Earth Science Edition, 2012, 42(1):206-211.

[4] 杨悦锁, 雷玉德, 杜新强, 等. 当地下水邂逅DNA:石油类有机污染及其生物降解[J]. 吉林大学学报:地球科学版, 2012, 42(5):1434-1445. Yang Yuesuo, Lei Yude, Du Xinqiang, et al. When Groundwater Meets DNA: Petroleum Hydrocarbon Stress vs Biodegradation[J]. Journal of Jilin University:Earth Science Edition, 2012, 42(5):1434-1445.

[5] Mattes T E, Alexander A K, Coleman N V. Aerobic Biodegradation of the Chloroethenes: Pathways, Enzymes, Ecology, and Evolution[J]. FEMS Microbiology Reviews, 2010, 34(4): 445-475.

[6] EPA. 126 Priority Pollutants[J/OL].(2010-10-01)[2014-02-03].http://water.epa.gov/scitech/swguidance/methods/pollutants.cfm.

[7] 高存荣, 王俊桃. 我国69个城市地下水有机污染特征研究[J]. 地球学报, 2011, 32(5): 581-591. Gao Cunrong, Wang Juntao. Research on Groundwater Organic Contamination Characteristics in 69 Cities of China[J]. Acta Geoscientica Sinica, 2011, 32(5): 581-591.

[8] 胡林, 邱兆富, 何龙, 等. 土壤组分对四氯乙烯吸附解吸行为的影响[J]. 环境科学, 2013, 34(12): 4635-4641. Hu Lin, Qiu Zhaofu, He Long, et al. Effects of Soil Compositions on Sorption and Desorption Behavior of Tetrachloroethylene in Soil[J]. Environmental Science, 2013, 34(12): 4635-4641.

[9] 孟凡勇. 挥发性氯代烃在我国典型土壤中的吸附-解吸特性研究[D].上海:上海师范大学, 2011. Meng Fanyong. Study on the Adsorption-Desorption Characteristics of Volatile Chlorinated Hydrocarbons in Typical Soil of China[D]. Shanghai:Shanghai Normal University, 2011.

[10] 刘明亮. 土壤/沉积物对三氯乙烯的吸附行为研究[D]. 北京: 中国地质大学, 2007. Liu Mingliang. Study on Sortion Behavior of TCE by Natural Soils and Sediments[D]. Beijing: China University of Geosciences, 2007.

[11] 张坤峰, 何江涛, 刘明亮, 等. 土壤有机质形态对有机污染物三氯乙烯(TCE)的吸附影响研究[J]. 安徽农业科学, 2010, 38(1): 286-288. Zhang Kunfeng, He Jiangtao, Liu Mingliang, et al. Effect of the Organic Matter in Soil on the Adsorption of the Organic Pollutant-Trichloroethene[J]. Journal of Anhui Agricultural Sciences, 2010, 38(1): 286-288.

[12] 刘玉龙, 缪德仁, 刘菲, 等. 1,2-二氯乙烷和1,2-二氯丙烷在某污染场地包气带的吸附-解吸特性[J]. 地学前缘, 2008, 15(6): 185-191. Liu Yulong, Miao Deren, Liu Fei, et al. Adsorption and Desorption of 1, 2-Dichloroethane and 1, 2-Dichloropropane by Soils in an Unsaturated Zone[J]. Earth Science Frontiers, 2008, 15(6): 185-191.

[13] Lu C, Bjerg P L, Zhang F J, et al. Sorption of Chlorinated Solvents and Degradation Products on Natural Clayey Tills[J]. Chemosphere, 2011, 83(11): 1467-1474.

[14] Allen R M, Groenevelt H, Mackay D M. Analytical Method for the Sorption of Hydrophobic Organic Pollutants in Clay-Rich Materials[J]. Environmental Science & Technology, 1995, 29(1): 148-153.

[15] Mazari-Hiriart M,Hernandez-Eugenio C,Rojo-Callejas F, et al. Vertical Variability of PCE Sorption in the Lacustrine Clays of Mexico City[J]. Environmental Geology, 2000, 39(6): 595-602.

[16] Binger C A,Martin J P,Allen-King R M,et al.Variability of Chlorinated-Solvent Sorption Associated with Oxidative Weathering of Kerogen[J]. Journal of Contaminant Hydrology, 1999, 40(2): 137-158.

[17] 刘锐, 孟凡勇, 文晓刚, 等. 挥发性氯代烃在土壤中的吸附行为研究进展[J]. 土壤学报, 2012, 49(1): 165-172. Liu Rui, Meng Fanyong, Wen Xiaogang, et al. The Research Progress of Volatile Chlorinated Hydrocarbons Adsorption Behavior in the Soil[J]. Acta Pedologica Sinica, 2012, 49(1): 165-172.

[18] Allen-King R M, McKay L D, Trudell M R. Organic Carbon Dominated Trichloroethylene Sorption in a Dlay-Rich Glacial Deposit[J]. Ground Water, 1997, 35: 124-130.

[19] Abdul A, Gibson T L, Rai D N. Statistical Correlations for Predicting the Partition Coefficient for Nonpolar Organic Contaminants Between Aquifer Organic Carbon and Water[J]. Hazardous Waste and Hazardous Materials, 1987, 4(3):211-222.

[20] Dobbs R A, Wang L, Govind R. Sorption of Toxic Organic Compounds on Wastewater Solids: Correlation with Fundamental Properties[J]. Environmental Science & Technology, 1989, 23(9): 1092-1097.

[21] Rao P S C, Davidson J M. Estimation of Pesticide Retention and Transformation Parameters Required in Nonpoint Source Pollution Models[C]//Overocash M R,Davidson I M.Environmental Impact of Nonpoint Source Pollution.New York:Arbor,1980:23-67.

[22] Ukrainczyk L, Rashid N. Irreversible Sorption of Nicosulfuron on Clay Minerals[J]. Journal of Agricultural and Food Chemistry, 1995, 43(4): 855-857.

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