
Enhanced reductive degradation of carbon tetrachloride by carbon dioxide radical anion-based sodium percarbonate/ Fe(II)/formic acid system in aqueous solution
Wenchao Jiang, Ping Tang, Shuguang Lu, Xiang Zhang, Zhaofu Qiu, Qian Sui
Front. Environ. Sci. Eng. ›› 2018, Vol. 12 ›› Issue (2) : 6.
Enhanced reductive degradation of carbon tetrachloride by carbon dioxide radical anion-based sodium percarbonate/ Fe(II)/formic acid system in aqueous solution
Complete CT degradation was achieved by SPC/Fe(II)/FA system.
Formic acid established the reductive circumstance by producing CO2·–.
CO2·– was the dominant active species responsible for CT degradation.
CT degradation was favorable in the pH range from 3.0 to 9.0.
SPC/Fe(II)/FA system may be suitable for CT remediation in contaminated groundwater.
The performance of sodium percarbonate (SPC) activated with ferrous ion (Fe(II)) with the addition of formic acid (FA) to stimulate the degradation of carbon tetrachloride (CT) was investigated. Results showed that CT could be entirely reduced within 15 min in the system at a variety of SPC/Fe(II)/FA/CT molar ratios in experimental level. Scavenging tests indicated that carbon dioxide radical anion (CO2·–) was the dominant reactive oxygen species responsible for CT degradation. CT degradation rate, to a large extent, increased with increasing dosages of chemical agents and the optimal molar ratio of SPC/Fe(II)/FA/CT was set as 60/60/60/1. The initial concentration of CT can hardly affect the CT removal, while CT degradation was favorable in the pH range of 3.0–9.0, but apparently inhibited at pH 12. Cl– and HCO3– of high concentration showed negative impact on CT removal. Cl– released from CT was detected and the results confirmed nearly complete mineralization of CT. CT degradation was proposed by reductive C-Cl bond splitting. This study demonstrated that SPC activated with Fe(II) with the addition of FA may be promising technique for CT remediation in contaminated groundwater.
Carbon tetrachloride / Sodium percarbonate / Formic acid / Reductive radicals / Groundwater
[1] |
Mercier M, Lans M, de Gerlache J. Mutagenicity, carcinogenicity, and teratogenicity of halogenated hydrocarbon solvents. In: Kirsch-Volders M, eds. Mutagenicity, Carcinogenicity, and Teratogenicity of Industrial Pollutants. Boston: Springer, 1984, 281–324
|
[2] |
Semprini L. In situ bioremediation of chlorinated solvents. Environmental Health Perspectives, 1995, 103(Suppl 5): 101–105
CrossRef
Pubmed
Google scholar
|
[3] |
Lin Y T, Liang C. Carbon tetrachloride degradation by alkaline ascorbic acid solution. Environmental Science & Technology, 2013, 47(7): 3299–3307
CrossRef
Pubmed
Google scholar
|
[4] |
Fischer J R, Sweeny K H. US Patent, 3 640 821, 1972–02–08
|
[5] |
Wolfe N L, Macalady D L. New perspectives in aquatic redox chemistry: abiotic transformations of pollutants in groundwater and sediments. Journal of Contaminant Hydrology, 1992, 9(1–2): 17–34 doi:10.1016/0169-7722(92)90048-J
|
[6] |
Alvarado J S, Rose C, Lafreniere L. Degradation of carbon tetrachloride in the presence of zero-valent iron. Journal of Environmental Monitoring, 2010, 12(8): 1524–1530
CrossRef
Pubmed
Google scholar
|
[7] |
Kostka J E, Nealson K H. Dissolution and reduction of magnetite by bacteria. Environmental Science & Technology, 1995, 29(10): 2535–2540
CrossRef
Pubmed
Google scholar
|
[8] |
Buxton G V, Greenstock C L, Helman W P, Ross A B. Critical view of rate constants for reactions of hydrated electrons, hydrogen atoms and hydroxyl radicals (·OH/·O-) in aqueous solution. Journal of Physical and Chemical Reference Data, 1988, 17(2): 513–886
CrossRef
Google scholar
|
[9] |
Gara P, Bucharsky E, Worner M A, Martire D, Gonzalez M C. Trichloroacetic acid dehalogenation by reductive radicals. Inorganica Chimica Acta, 2007, 360(3): 1209–1216
CrossRef
Google scholar
|
[10] |
Gonzalez M C, Le Roux G C, Rosso J A, Braun A M. Mineralization of CCl4 by the UVC-photolysis of hydrogen peroxide in the presence of methanol. Chemosphere, 2007, 69(8): 1238–1244
CrossRef
Pubmed
Google scholar
|
[11] |
Xu M, Gu X, Lu S, Miao Z, Zang X, Wu X, Qiu Z, Sui Q. Degradation of carbon tetrachloride in thermally activated persulfate system in the presence of formic acid. Frontiers of Environmental Science & Engineering, 2016, 10(3): 438–446
CrossRef
Google scholar
|
[12] |
Walling C. Fenton’s reagent revisited. Accounts of Chemical Research, 1975, 8(4): 125–131
CrossRef
Google scholar
|
[13] |
Bendicho C, Calle I, Pena F, Costas M, Cabaleiro N, Lavilla I. Ultrasound-assisted pretreatment of solid samples in the context of green analytical chemistry. Trends in Analytical Chemistry, 2012, 43(8): 50–60
CrossRef
Google scholar
|
[14] |
Miao Z, Gu X, Lu S, Zang X, Wu X, Xu M, Ndong L B, Qiu Z, Sui Q, Fu G Y. Perchloroethylene (PCE) oxidation by percarbonate in Fe2+-catalyzed aqueous solution: PCE performance and its removal mechanism. Chemosphere, 2015, 119: 1120–1125
CrossRef
Pubmed
Google scholar
|
[15] |
Fu X, Gu X, Lu S, Miao Z, Xu M, Zhang X, Qiu Z, Sui Q. Benzene depletion by Fe2+-catalyzed sodium percarbonate in aqueous solution. Chemical Engineering Journal, 2015, 267: 25–33
CrossRef
Google scholar
|
[16] |
Tamura H, Goto K, Yotsuyanagi T, Nagayama M. Spectrophotometric determination of iron(II) with 1,10-phenanthroline in the presence of large amounts of iron(III). Talanta, 1974, 21(4): 314–318
CrossRef
Pubmed
Google scholar
|
[17] |
Cohen I R, Purcell T C, Altshuller A P. Analysis of the oxidant in photooxidation reactions. Environmental Science & Technology, 1967, 1(3): 247–252
CrossRef
Google scholar
|
[18] |
Legrini O, Oliveros E, Braun A M. Photochemical processes for water treatment. Chemical Reviews, 1993, 93(2): 671–698
CrossRef
Google scholar
|
[19] |
Rosso J A, Bertolotti S G, Braun A M, Mártire D O, Gonzalez M C. Reactions of carbon dioxide radical anion with substituted benzenes. Journal of Physical Organic Chemistry, 2001, 14(5): 300–309
CrossRef
Google scholar
|
[20] |
Hayon E, Simic M. Acid-base properties of organic peroxy radicals, ·OORH, in aqueous solution. Journal of the American Chemical Society, 1973, 95(20): 6681–6684
CrossRef
Google scholar
|
[21] |
Teel A L, Watts R J. Degradation of carbon tetrachloride by modified Fenton’s reagent. Journal of Hazardous Materials, 2002, 94(2): 179–189
CrossRef
Pubmed
Google scholar
|
[22] |
Tachikawa T, Tojo S, Fujitsuka M, Majima T. Direct observation of the one-electron reduction of methyl viologen mediated by the CO2 radical anion during TiO2 photocatalytic reactions. Langmuir, 2004, 20(22): 9441–9444
CrossRef
Pubmed
Google scholar
|
[23] |
Yap C L, Gan S, Ng H K. Fenton based remediation of polycyclic aromatic hydrocarbons-contaminated soils. Chemosphere, 2011, 83(11): 1414–1430
CrossRef
Pubmed
Google scholar
|
[24] |
Stuglik Z, Pawełzagórski Z. Pulse radiolysis of neutral iron(II) solutions: oxidation of ferrous ions by OH radicals. Radiation Physics and Chemistry, 1981, 17(4): 229–233
|
[25] |
Aristova N A, Leitner N K V, Piskarev I M. Degradation of formic acid in different oxidative processes. High Energy Chemistry, 2002, 36(3): 197–202
CrossRef
Google scholar
|
[26] |
Morkovnik A F, Okhlobystin O Y. Inorganic radical-ions and their organic reactions. Russian Chemical Reviews, 1979, 48(11): 1055–1075
CrossRef
Google scholar
|
[27] |
Connor H D, Thurman R G, Galizi M D, Mason R P. The formation of a novel free radical metabolite from CCl4 in the perfused rat liver and in vivo. Journal of Biological Chemistry, 1986, 261(10): 4542–4548
Pubmed
|
[28] |
Yu X Y, Barker J R. Hydrogen peroxide photolysis in acidic aqueous solutions containing chloride ions. I. Chemical mechanism. Journal of Physical Chemistry A, 2003, 107(9): 1313–1324
CrossRef
Google scholar
|
[29] |
Hasegawa K, Neta P. Rate constants and mechanisms of reaction of chloride (·Cl2–) radicals. Journal of Physical Chemistry, 1978, 82(8): 54–857
CrossRef
Google scholar
|
[30] |
Wu C, Linden K G. Phototransformation of selected organophosphorus pesticides: roles of hydroxyl and carbonate radicals. Water Research, 2010, 44(12): 3585–3594
CrossRef
Pubmed
Google scholar
|
[31] |
Zhang X, Gu X, Lu S, Miao Z, Xu M, Fu X, Qiu Z, Sui Q. Degradation of trichloroethylene in aqueous solution by calcium peroxide activated with ferrous ion. Journal of Hazardous Materials, 2015, 284: 253–260
CrossRef
Pubmed
Google scholar
|
[32] |
Jeffers P M, Ward L M, Woytowitch L M, Wolfe N L. Homogeneous hydrolysis rate constants for selected chlorinated methanes, ethanes, ethenes, and propanes. Environmental Science & Technology, 1989, 23(8): 965–969
CrossRef
Google scholar
|
[33] |
Kriegman-King M R, Reinhard M. Transformation of carbon tetrachloride by pyrite in aqueous solution. Environmental Science & Technology, 1994, 28(4): 692–700
CrossRef
Pubmed
Google scholar
|
[34] |
Amonette J E, Workman D J, Kennedy D W, Fruchter J S, Gorby Y A. Dechlorination of carbon tetrachloride by Fe(II) associated with goethite. Environmental Science & Technology, 2000, 34(21): 4606–4613
CrossRef
Google scholar
|
[35] |
DanielsenK M, HayesK F. pH dependence of carbon tetrachloride reductive dechlorination by magnetite.Environmental Science & Technology, 2004, 38(18): 4745–4752
CrossRef
Pubmed
Google scholar
|
/
〈 |
|
〉 |