OH<sup>-</sup>浓度对地下水中铁碳酸盐沉淀形成的影响

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Abstract

Iron Carbonate precipitation is the most common corrosion products during the process of Fe⁰-PRB operation, which have important influence on the long-term operation of Fe⁰-PRB. Exploring the precipitate formation condition can provide vital evidence to controll its formation on the Fe surface. Experiments were conducted in FeCl₂, NaOH, and Na₂CO₃ solutions to investigate the effect of different OH^- concentration (0.02、0.06、0.1mol/L) and R=[Fe²⁺]/[OH^-]、R'=[CO₃²^-]/[OH^-] on the precipitate formation under anaerobic conditions. FeCO₃、Fe₂(OH)₂CO₃ and Fe₆(OH)₁₂CO₃ were detected under the different experimental conditions, Fe₆(OH)₁₂CO₃ can formation in the low concentration [OH^-]=0.02mol/L and not formation in the high OH^- concentration solutions. The low OH^- concentration and low R, high OH^-concentration and large R have positive effect on the formation of Fe₂(OH)₂CO₃. FeCO₃ just be detected and precipitated with Fe₂(OH)₂CO₃ in the system with low concentrations of Fe²⁺、CO₃²^-、OH^-.

Key words： FeCO₃ Fe₂(OH)₂CO₃ Fe₆(OH)₁₂CO₃ OH^- concentration

Received: 20 December 2015

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	Articles by authors
	CHEN Ri
	LUO Ling-yun
	HONG Mei
	ZHANG Wen-jing
	ZHANG Jun-hao

Cite this article:

CHEN Ri,LUO Ling-yun,HONG Mei等. Investigation of the effect of OH^- concentration on the formation of iron carbonate precipitation in groundwater.[J]. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(7): 2051-2057.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2016/V36/I7/2051

[1]	Higgins M R, Olson T M. Life-Cycle Case Study Comparison of Permeable Reactive Barrier versus Pump-and-Treat Remediation [J]. Environmental Science & Technology, 2009,43(24):9432-9438.
[2]	张娜,陈日,张海涛,等.模拟地下水中重碳酸盐浓度对零价铁还原硝基苯的影响 [J]. 中国环境科学, 2014,34(8):2010-2016.
[3]	邓红卫,贺威,胡建华,等. Fe0-PRB修复地下水硝酸盐污染数值模拟 [J]. 中国环境科学, 2015,35(8):2375-2381.
[4]	Klausen J, Vikesland P J, Kohn T, et al. Longevity of Granular Iron in Groundwater Treatment Processes:Solution Composition Effects on Reduction of Organohalides and Nitroaromatic Compounds [J]. Environmental Science & Technology, 2003,37(6):1208-1218.
[5]	Jeen S W, Gillham R W, Blowes D W. Effects of carbonate precipitates on long-term performance of granular iron for reductive dechlorination of TCE. [J]. Environmental Science & Technology, 2006,40(20):6432-6437.
[6]	Kamolpornwijit W, Liang L, Moline G R, et al. Identification and Quantification of Mineral Precipitation in Fe0 Filings from a Column Study [J]. Environmental Science & Technology, 2004, 38(21):5757-5765.
[7]	Bonin P M L, Odziemkowski M S, Reardon E J, et al. In situ identification of carbonate-containing green rust on iron electrodes in solutions simulating groundwater [J]. Journal of Solution Chemistry, 2000,29(10):1061-1074.
[8]	Kohn T, Roberts A L. effect of silica on the degradation of Organohalides in Granular iron columns [J]. Journal of Contaminant Hydrology, 2006,83(1):70-88.
[9]	Roh Y, Lee S Y, Elless M P. Characterization of corrosion products in the permeable reactive barriers [J]. Environmental Geology, 2000,40(1/2):184-194.
[10]	Bi E, Bowen I, Devlin J F. Effect of Mixed Anions (HCO3-- SO42-- ClO4-) on Granular Iron (Fe0) Reactivity [J]. Environmental Science & Technology, 2009,43(15):5975-5981.
[11]	Agrawal A, Ferguson W J, Gardner B O, et al. Effects of carbonate species on the kinetics of dechlorination of 1, 1, 1-trichloroethane by zero-valent iron [J]. Environmental Science & Technology, 2002,36(20):4326-4333.
[12]	Williams A G B, Scherer M M. Kinetics of Cr (VI) reduction by carbonate green rust [J]. Environmental Science & Technology, 2001,35(17):3488-3494.
[13]	Weber A, Ruhl A S, Amos R T. Investigating dominant processes in ZVI permeable reactive barriers using reactive transport modeling [J]. J. Contam. Hydrol., 2013,151:68-82.
[14]	Jeen S W, Jambor L J, Blowes D W, et al. Precipitates on Granular Iron in Solutions Containing Calcium Carbonate with Trichloroethene and Hexavalent Chromium [J]. Environmental Science & Technology, 2007,41:1989-1994.
[15]	Nishimura T, Dong J. Corrosion behavior of carbon steel for overpack in groundwater containing bicarbonate ions [J]. Journal of Power and Energy Systems, 2009,3(1):23-30.
[16]	Reffass M, Sabot R, Savall C, et al. Localised corrosion of carbon steel in NaHCO3/NaCl electrolytes: role of Fe (II)-containing compounds [J]. Corrosion Science, 2006,48(3):709-726.
[17]	Refait P, Abdelmoula M, Génin J M R, et al. Green rusts in electrochemical and microbially influenced corrosion of steel [J]. Comptes Rendus Geosciences, 2006,338:476-487.
[18]	Johnson T L, Scherer M M, Tratnyek P G. Kinetics of halogenated organic compound degradation by iron metal [J]. Environmental Science & Technology, 1996,30(8):2634-2640.
[19]	Rémazeilles C, Refait P. Fe (II) hydroxycarbonate Fe2(OH)2CO3 (chukanovite) as iron corrosion product: Synthesis and study by Fourier Transform Infrared Spectroscopy [J]. Polyhedron, 2009, 28(4):749-756.
[20]	Azoulay I, Rémazeilles C, Refait P. Determination of standard Gibbs free energy of formation of chukanovite and Pourbaix diagrams of iron in carbonated media [J]. Corrosion Science, 2012,58:229-236.