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Received: 2005-07-19

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Journal of Zhejiang University SCIENCE B 2005 Vol.6 No.10 P.1005~1008

http://doi.org/10.1631/jzus.2005.B1005


Experimental study on the inhibition of biological reduction of Fe(III)EDTA in NOx absorption solution


Author(s):  LI Wei, WU Cheng-zhi, ZHANG Shi-han, SHI Yao, LEI Le-cheng

Affiliation(s):  Institute of Environmental Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   yaoshi@zju.edu.cn

Key Words:  Biological reduction, Fe(III)EDTA, NOx, Inhibition


LI Wei, WU Cheng-zhi, ZHANG Shi-han, SHI Yao, LEI Le-cheng. Experimental study on the inhibition of biological reduction of Fe(III)EDTA in NOx absorption solution[J]. Journal of Zhejiang University Science B, 2005, 6(10): 1005~1008.

@article{title="Experimental study on the inhibition of biological reduction of Fe(III)EDTA in NOx absorption solution",
author="LI Wei, WU Cheng-zhi, ZHANG Shi-han, SHI Yao, LEI Le-cheng",
journal="Journal of Zhejiang University Science B",
volume="6",
number="10",
pages="1005~1008",
year="2005",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2005.B1005"
}

%0 Journal Article
%T Experimental study on the inhibition of biological reduction of Fe(III)EDTA in NOx absorption solution
%A LI Wei
%A WU Cheng-zhi
%A ZHANG Shi-han
%A SHI Yao
%A LEI Le-cheng
%J Journal of Zhejiang University SCIENCE B
%V 6
%N 10
%P 1005~1008
%@ 1673-1581
%D 2005
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2005.B1005

TY - JOUR
T1 - Experimental study on the inhibition of biological reduction of Fe(III)EDTA in NOx absorption solution
A1 - LI Wei
A1 - WU Cheng-zhi
A1 - ZHANG Shi-han
A1 - SHI Yao
A1 - LEI Le-cheng
J0 - Journal of Zhejiang University Science B
VL - 6
IS - 10
SP - 1005
EP - 1008
%@ 1673-1581
Y1 - 2005
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2005.B1005


Abstract: 
Scrubbing of NOx from the gas phase with Fe(II)EDTA has been shown to be highly effective. A new biological method can be used to convert NO to N2 and regenerate the chelating agent Fe(II)EDTA for continuous NO absorption. The core of this biological regeneration is how to effectively simultaneous reduce fe(III)EDTA and Fe(II)EDTA-NO, two mainly products in the ferrous chelate absorption solution. The biological reduction rate of fe(III)EDTA plays a main role for the NOx removal efficiency. In this paper, a bacterial strain identified as Klebsiella Trevisan sp. was used to demonstrate an inhibition of fe(III)EDTA reduction in the presence of Fe(II)EDTA-NO. The competitive inhibition experiments indicted that Fe(II)EDTA-NO inhibited not only the growth rate of the iron-reduction bacterial strain but also the fe(III)EDTA reduction rate. Cell growth rate and fe(III)EDTA reduction rate decreased with increasing Fe(II)EDTA-NO concentration in the solution.

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Reference

[1] Harriott, P., Smith, K., Benson, L.B., 1993. Simultaneous removal of NO and SO2 in packed scrubbers or spray towers. Environ. Prog., 12(2):110-113.

[2] Jing, G.H., Li, W., Shi, Y., Ma, B.Y., Tan, T.E., 2004a. Regeneration of nitric oxide chelate absorption solution by two heterotrophic bacterial strains. J. Zhejiang Univ. SCI., 5(4):432-435.

[3] Jing, G.H., Li, W., Shi, Y., Ma, B.Y., Tan, T.E., 2004b. Isolation and its properties of bacterial strain for Fe3+EDTA reduction. China Environmental Science, 24(4):447-451 (in Chinese).

[4] Jing, G.H., Li, W., Shi, Y., Ma, B.Y., Tan, T.E., 2004c. Properties of Pseudomonas sp. DN-1 in reduction of nitric oxide chelate absorption solution. Chinese Journal of Environmental Science, 25(4):163-166 (in Chinese).

[5] Li, W., Shi, Y., Jing, G.H., Ma, B.Y., Chang, S.G., 2003. A novel approach for simultaneous reduction of Fe(II)EDTA-NO and Fe(III)EDTA using micro-organisms. J. Chem. Ind. Eng. (China), 54(9):1340-1342.

[6] Shi, Y., Littlejohn, D., Chang, S.G., 1996a. Integrated tests for removal of nitric oxide with iron thiochelate in wet flue gas desulfurization systems. Environmental Science and Technology, 30(11):3371-3376.

[7] Shi, Y., Littlejohn, D., Chang, S.G., 1996b. Kinetics of NO absorption in aqueous iron(II) bis(2,3-dimercapto-1-propanesulfonate) solutions using a stirred reactor. Ind. Eng. Chem. Res., 35(5):1668-1672.

[8] Shi, Y., Littlejohn, D., Kettler, P.B., Chang, S.G., 1996c. Removal of nitric oxide from flue gas with iron thiochelate aqueous solution in a turbulent contact absorber. Environ. Prog., 15(3):153-158.

[9] Shi, Y., Wang, H., Chang, S.G., 1997. Kinetics of NO absorption in aqueous iron(II) thiochelate solutions. Environ. Prog., 16(4):301-306.

[10] Tsai, S.S., Bedell, S.A., Kirby, L.H., Zabick, D.J., 1989. Field evaluation of nitric oxide abatement with ferrous chelates. Environ. Prog., 8:126-129.

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