Pickering乳化强化地下水三氯乙烯NAPL修复

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Abstract Four kinds of SiO₂ particles were synthesized with different length to diameter (L/D) ratios to form oil -in-water Pickering emulsions so as to control the water/trichloroethylene (TCE) NAPL interface and improve TCE dissolution. The characteristics and stability of the formed Pickering emulsion and effects of colloidal particle concentration, ionic strength in water and water/NAPL ratio were investigated. Results showed that the droplets in the Pickering emulsion formed from SiO₂ particles with L/D ratio of 2.3 had uniform size of 10µm and remained stable within 10 days. The emulsion index was up to 63% in this system. Moreover, the formed Pickering emulsion exhibited stability under low shear strain, facilitating groundwater in situ remediation. The results from comparing the kinetics of NAPL dissolution and oxidative degradation under Pickering emulsified and non-emulsified conditions indicate that Pickering emulsification could significantly elevate the dissolution rate of NAPL by increasing the interface area between the two phases, thereby achieve an increase in the degradation rate of NAPL phase pollutants.

Key words： groundwater trichloroethylene NAPL silica particle Pickering emulsion In situ chemical oxidation influencing factors

Received: 20 January 2022

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X523

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	YANG Shuo
	ZHAO Wen-chu
	YAN Xiu-lan
	ZHANG Dan

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YANG Shuo,ZHAO Wen-chu,YAN Xiu-lan等. Pickering emulsion for enhancing oxidative degradation of trichloroethylene nonaqueous-phase liquid in groundwater[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(8): 3713-3719.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I8/3713

[1]	Kueper B H, Stroo H F, Vogel C M, et al. Chlorinated solvent source zone remediation[M]. New York:Springer Science & Business Media, 2014:528-530.
[2]	Stroo H F, Ward C H. In situ remediation of chlorinated solvent plumes[M]. New York:Springer Science & Business Media, 2010.
[3]	Kim K, Gurol M D. Reaction of nonaqueous phase TCE with permanganate[J]. Environmental Science & Technology, 2005,39(23):9303-9308.
[4]	Krembs F J, Siegrist R L, Crimi M L, et al. ISCO for groundwater remediation:analysis of field applications and performance[J]. Groundwater Monitoring Remediation, 2010,30(4):42-53.
[5]	Tsitonaki A, Petri B, Crimi M, MosbÆk H, 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.
[6]	Bhattacharjee S, Ghoshal S. Phase transfer of palladized nanoscale zerovalent iron for environmental remediation of trichloroethene[J]. Environmental Science & Technology, 2016,50(16):8631-8639.
[7]	Bhattacharjee S, Ghoshal S. Optimal design of sulfidated nanoscale zerovalent iron for enhanced trichloroethene degradation[J]. Environmental Science & Technology, 2018,52(19):11078-11086.
[8]	Tsakiroglou C, Terzi K, Lock A S, et al. Assessing the capacity of zero valent iron nanofluids to remediate NAPL-polluted porous media[J]. Science of the Total Environment, 2016,564:866-878.
[9]	Yang Y R, Mccarty P. Comparison between donor substrates for biologically enhanced tetrachloroethene DNAPL[J]. Environmental Science & Technology, 2002,36:3400-3404.
[10]	Sleep B, Seepersad D, Mo K, et al. Biological enhancement of tetrachloroethene dissolution and associated microbial community changes[J]. Environmental Science & Technology, 200640:3623-3633.
[11]	陈梦舫,骆永明,宋静,等.场地含水层氯代烃污染物自然衰减机制与纳米铁修复技术的研究进展[J]. 环境监测管理与技术, 2011,23(3):85-86. Chen M F, Luo Y M, Song J, et al. Natural attenuation mechanisms and the status of nano-iron technology for the remediation of chlorinated solvents in groundwater[J]. Environmental Monitoring Management and Technology, 2011,23(3):85-86.
[12]	Padgett M C, Tick G R, Carroll K C, et al. Chemical structure influence on NAPL mixture nonideality evolution, rate-limited dissolution, and contaminant mass flux[J]. Journal of Contaminant Hydrology, 2017,198:11-23.
[13]	McGuire T M, McDade J M, Newell C J. Performance of DNAPL source depletion technologies at 59chlorinated solvent-impacted sites[J]. Groundwater Monitoring & Remediation, 2006,26:73-84.
[14]	Wang H, Singh V. Image charge effects on the formation of Pickering emulsions[J]. The Journal of Physical Chemistry Letters, 2012,3(20):2986-2990.
[15]	Liu J W, Wei K H, Xu S W, et al. Surfactant-enhanced remediation of oil-contaminated soil and groundwater:A review[J]. Science of the Total Environment, 2021,756:144142.
[16]	Hu Y X, Zhang C W, Patmonoaji A, et al. Pore-scale investigation of wettability impact on residual nonaqueous phase liquid dissolution in natural porous media[J]. Science of the Total Environment, 2021,787:147406.
[17]	Lee L L, Niknafs N. Emulsification:mechanistic understanding[J]. Trends in Food Science & Technology, 2012,31(1):1-7.
[18]	Venkataraman P, Sunkara B, Dennis JES, et al. Water-in-trichloroethylene emulsions stabilized by uniform carbon microspheres[J]. Langmuir, 2012,28:1058-1063.
[19]	Wang L, Peng L B, Xie L L, et al. Compatibility of surfactants and thermally activated persulfate for enhanced subsurface remediation[J]. Environmental Science & Technology, 2017,51(12):7055-7064.
[20]	Lu J, Tian X X. The research progress of Pickering emulsion[J]. China Surfactant Detergent and Cosmetics, 2014,8(44):460-465.
[21]	Tan Y, Xu K. Triglyceride-water emulsions stabilised by starch-based nanoparticles[J]. Food Hydrocolloids, 2014,36(2):70-75.
[22]	高党鸽,段羲颖,吕斌,等.纳米SiO2稳定Pickering乳液的研究进展[J]. 印染, 2015,41(4):50-51. Gao D G, Duan Y Y, Lv B. et al. Progress in research of Pickering emulsion stabilized by nono-SiO2[J]. Printing and Dyeing, 2015,41(4):50-51.
[23]	王军鹏.智能自预警与自修复涂层材料的制备及性能研究[D]. 北京:中国科学院大学(中国科学院过程工程研究所), 2018:47-67. Wang J P, Synthesis and characterization of smart self-reporting and self-healing coatings[D]. Beijing:University of Chinese Academy of Sciences, 2018:47-67.
[24]	蒋伟峰.剪切增稠材料的力学性能表征及机理研究[D]. 北京:中国科学技术大学, 2015. Jiang W F. Study on mechanical properties and mechanism of printing and dyeing shear thickening materials[D]. Beijing:University of Science and Technology of China, 2015.
[25]	Schnarr M, Truax C, Farquhar G, et al. Laboratory and controlled field experiments using potassium permanganate to remediate trichloroethylene and perchloroethylene DNAPLs in porous media[J]. Journal of Contaminant Hydrology, 1998,29(3):205-224.
[26]	Seol Y, Schwartz F W. Phase-transfer catalysis applied to the oxidation of nonaqueous phase trichloroethylene by potassium permanganate[J]. Journal of Contaminant Hydrology, 2000,44(2):185-201.
[27]	Kim K, Kim Y S, Gurol M D. DNAPL TCE oxidation with permanganate:Influence of the phase transfer catalyst pentyltriphenylphosphonium[J]. Water, Air, & Soil Pollution, 2013, 224(10):1735.
[28]	Ko S, Crimi M, Marvin B K, et al. Comparative study on oxidative treatments of NAPL containing chlorinated ethanes and ethenes using hydrogen peroxide and persulfate in soils[J]. Journal of Environmental Management, 2012,108:42-48.
[29]	Urynowicz M A, Siegrist R L. Interphase mass transfer during chemical oxidation of TCE DNAPL in an aqueous system[J]. Journal of Contaminant Hydrology, 2005,80(3/4):93-106.