Improvement in the degradation of trichloroacetic acid by sponge iron through its surface modification by nickel

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Journal of Beijing University of Chemical Technology ›› 2010, Vol. 37 ›› Issue (3) : 35-40.

化学与化学工程

LIU Jia;CHEN YongMei;LI TianYu;SONG GuanJun;WAN PingYu

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When sponge iron was activated by immersion in acid or nickel salt solutions, its activity for the degradation of trichloroacetic acid (TCAA) in water was significantly increased. The experimental results showed that the degradation of TCAA by sponge iron is a first order reaction, and being activated by immersion in acid or nickel salts neither changed the order of the degradation reaction nor greatly affected the activation energy, but did significantly increase the apparent rate constant of the reaction, k_obs, by factors of three and eight, respectively. Moreover, a decrease in the radius of the sponge iron and an increase in the amount of sponge iron acting on a fixed volume of TCAA (m_Fe/V_TCAA) both resulted in an increase in the degradation rate. The apparent rate constant of the degradation of TCAA by sponge iron activated by nickel salts reached 0.855h^-1 when the reaction was carried out at 20℃ with m_Fe/V_TCAAequal to 50g/L.

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LIU Jia;CHEN YongMei;LI TianYu;SONG GuanJun;WAN PingYu. Improvement in the degradation of trichloroacetic acid by sponge iron through its surface modification by nickel[J]. Journal of Beijing University of Chemical Technology, 2010, 37(3): 35-40

References

［1］MillerJ W, Uden P C. Characterzation of nonvolatile aqueouschlorination products of humic aubstances［J］. Environ Sci Tech, 1983, 17: 150-157.
［2］Chen J L, AlAbed S R, Ryan J A, et al. Effects of pH on dechlorination of trichloroethylene by zerovalent［J］. Journal of Hazardous Materials, 2001, B83: 243-254.
［3］Maymo-GatellX, Nijenhuis I, Zinder S H. Reductive dechlorination of cis-1, 2-dichloroethene and vinyl chloride by dehalococcoides ethenogenes［J］. Environ Sci Tech, 2001, 35: 516-521.
［4］Liu Y Q, Majetich S A, Tilton R D, et al. TCE dechlorination rates, pathways, and efficiency of nanoscale iron particles with different properties［J］. Environ SciTech, 2005, 39: 1338-1345.
［5］吴德礼, 王红武, 马鲁铭, 等. 氯代烃结构特性对其还原脱氯反应速率的影响［J］. 同济大学学报: 自然科学版，2007, 35(4): 496-500.
Wu D L, Wang H W, Ma L M, et al. Effects of structure speciality of chlorinated
hydrocarbon on reductive dechlorination rate［J］. Journal of Tongji University:
Nature Science, 2007, 35(4): 496-500. (in Chinese) ［6］顾莹莹, 高孟春, 贾永刚. 海绵铁还原水中硝酸盐的初步研究［J］. 中国给水排水, 2006, 22(7): 82-88.
Gu Y Y, Gao M C, Jia Y G. Preliminary study on reduction of nitrate in water with sponge iron［J］. China Water & Wastewater, 2006, 22(7): 82-88. (in Chinese)
［7］何小娟, 汤鸣皋, 李旭东. 镍/铁和铜/铁双金属降解四氯乙烯的研究［J］.环境化学，2003, 22(4): 334-339.
He X J, Tang M G, Li X D. Degradation of PCE using Ni/Fe and Cu/Fe bimetal syste
ms［J］. Environmental Chemistry, 2003, 22(4): 334-339. (in Chinese)
［8］Choe S，Lee S H，Chang Y Y, et al. Rapid red uctive destruction of
hazardous organic compounds by nanoscale Fe［J］. Chemosphere，2001, 42:36
7-372.

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Received	Revised	Published
2009-05-04	1900-01-01	2010-06-10
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2010-06-10

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