Full Text:   <1400>

CLC number: O613.61; X523

On-line Access: 

Received: 2004-05-18

Revision Accepted: 2004-06-07

Crosschecked: 0000-00-00

Cited: 16

Clicked: 4805

Citations:  Bibtex RefMan EndNote GB/T7714

-   Go to

Article info.
1. Reference List
Open peer comments

Journal of Zhejiang University SCIENCE B 2005 Vol.6 No.3 P.182~186


Reductive denitrification of nitrate by scrap iron filings

Author(s):  HAO Zhi-wei, XU Xin-hua, WANG Da-hui

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

Corresponding email(s):   hawk200044@126.com

Key Words:  Denitrification, Scrap iron filings (SIF), Zero-valent iron, Nitrate, Mechanism

HAO Zhi-wei, XU Xin-hua, WANG Da-hui. Reductive denitrification of nitrate by scrap iron filings[J]. Journal of Zhejiang University Science B, 2005, 6(3): 182~186.

@article{title="Reductive denitrification of nitrate by scrap iron filings",
author="HAO Zhi-wei, XU Xin-hua, WANG Da-hui",
journal="Journal of Zhejiang University Science B",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Reductive denitrification of nitrate by scrap iron filings
%A HAO Zhi-wei
%A XU Xin-hua
%A WANG Da-hui
%J Journal of Zhejiang University SCIENCE B
%V 6
%N 3
%P 182~186
%@ 1673-1581
%D 2005
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2005.B0182

T1 - Reductive denitrification of nitrate by scrap iron filings
A1 - HAO Zhi-wei
A1 - XU Xin-hua
A1 - WANG Da-hui
J0 - Journal of Zhejiang University Science B
VL - 6
IS - 3
SP - 182
EP - 186
%@ 1673-1581
Y1 - 2005
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2005.B0182

Reduction of nitrate by zero-valent iron is a highly exergonic reaction that has long been known to occur. Use of scrap iron filings (SIF) as the PRB (Permeable Reactive Barrier) material can be used to recycle certain by-products, and identify cheaper replacements for expensive conventional PRB materials, especially pure metallic iron. The feasibility of reductive denitrification of nitrate by SIF was studied by batch experiments. Operational parameters such as pH value, SIF dosage and initial concentration of nitrate were investigated. The removal efficiency of nitrate reached 80% under the conditions of pH of 2.5, nitrate initial concentration of 45 mg/L and SIF dosage of 100 g/L within 4 h. Results indicated that nitrate removal is inversely related to pH. Low pH value condition favors for the nitrate transformation. Different from the results of others who studied nitrate reduction using iron powder, we found that there was a lag time before nitrate reduction occurs, even at low pH. Finally, the possible mechanism of nitrate reduction by Fe0 is discussed.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


[1] Ahn, S.Y., Oh, J.H., Sohn, K.H., 2001. Mechanistic Aspects of Nitrate Reduction by Fe(0) in Water. Journal of the Korean Chemical Society, 45(4):395-397.

[2] Ahn, J.S., Chon, C.M., Moon, H.S., Kim, K.W., 2002. Arsenic removal using steel manufacturing byproducts as permeable reactive materials in mine tailing containment systems. Water Research, 37:2478-2488.

[3] Cheng, I.F., Muftikian, R., Fernando, Q., 1997. Reduction of nitrate to ammonia by zero-valent iron. Chemosphere, 35:2689-2695.

[4] Choe, S.H., Chang, Y.Y., Hwang, K.Y., Khim, J.Y., 2000. Kinetics of reductive denitrification by nanoscale zerovalent iron. Chemosphere, 41:1307-1311.

[5] David, W.B., Carol, J.P., Shawn, G.B., Che, W.T.M., Timothy, A.B., Robert, W.P., 2000. Treatment of inorganic contaminants using permeable reactive barriers. Journal of Contaminant Hydrology, 45:123-137.

[6] Fanning, J.C., 2000. The chemical reduction of nitrate in aqueous solution. Coordination Chemistry Reviews, 199:159-179.

[7] Grittini, C., Malcomson, M., Fernando, Q., Korte, N., 1995. Rapid dechlorination of polychlorinated biphenyls on the surface of a Pd/Fe bimetallic system. Environ. Sci. Technol., 29:2898-2900.

[8] Hu, H.Y., Goto, N.H., Fujie, K., 2001. Effect of pH on the reduction of nitrite by metallic iron. Water Research, 35:2789-2793.

[9] Huang, C.P., Wang, H.W., Chiu, P.C., 1998. Nitrate reduction by metallic iron. Water Research, 32:2257-2264.

[10] Reardon, E.J., 1995. Anaerobic corrosion of granular iron: measurement and interpretation of hydrogen evolution rates. Environ. Sci. Technol., 29:2936-2945.

[11] Schreier, C.G., Reinhard, M., 1995. Catalytic hydrode-halogenation of chlorinated ethylenes using palladium and hydrogen for the treatment of contaminated water. Chemosphere, 31:3475-3487.

Open peer comments: Debate/Discuss/Question/Opinion


Please provide your name, email address and a comment

Journal of Zhejiang University-SCIENCE, 38 Zheda Road, Hangzhou 310027, China
Tel: +86-571-87952783; E-mail: cjzhang@zju.edu.cn
Copyright © 2000 - Journal of Zhejiang University-SCIENCE