Effect of iron oxide addition on hydrogen, carbon dioxide and methane geneses in paddy soil

Chinese Journal of Applied Ecology ›› 2003, Vol. ›› Issue (8): 1313-1316.

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Effect of iron oxide addition on hydrogen, carbon dioxide and methane geneses in paddy soil

QU Dong¹, ZHANG Yiping¹, S. Schnell², R. Conrad ³

1. Northwest Science and Technology University of Agriculture and Forestry, Yangling 712100, China;
2. University Giessen, Institute of Applied Microbiology, IFZ-Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany;
3. Max Planck Institute for Terrestrial Microbiology, Karl-Frisch-Strasse, 35043 Marburg, Germany

Received:2002-02-09 Revised:2002-05-17 Online:2003-08-15

Abstract

Abstract: Paddy soil is an important contributor for atmospheric methane. The methanogenesis is related to the production of acetate, hydrogen and carbon dioxide during the decomposition of organic matter under anaerobic conditions. As electron acceptors, iron (Ⅲ) oxides can effectively compete with electrons in the transformation of organic matter into methane. Its mechanism maybe relates to the consumption of H₂ and CO₂. After added ferrihydrite and lepidocrocite, the H₂, CO₂ and CH₄ were determined during the anaerobic incubation of slurries at 25 ℃ for 105 days. The results indicated that the addition of ferrihydrite and lepidocrocite could greatly decrease the concentration of H₂, CO₂ and CH₄, and ferrihydrite had a stronger effect than lepidocrocite. In this system, the balance of organic-C was disturbed, CH₄-C and CO₂ Cwere reduced, but the CO₃^2--C fixed by slurry was greatly increased.

CLC Number:

S151.9

QU Dong, ZHANG Yiping, S. Schnell, R. Conrad . Effect of iron oxide addition on hydrogen, carbon dioxide and methane geneses in paddy soil[J]. Chinese Journal of Applied Ecology, 2003, (8): 1313-1316.

References

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Effect of iron oxide addition on hydrogen, carbon dioxide and methane geneses in paddy soil

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[1]	GUO Zhaohui, HUANG Changyong, LIAO Bohan . Effects of simulated acid rains on Cd, Cu and Zn release and their form transformation in polluted soils [J]. Chinese Journal of Applied Ecology, 2003, (9): 1547-1550.
[2]	QU Dong, ZHANG Yiping, S. Schnell, R. Conrad . Effect of iron oxide addition on hydrogen, carbon dioxide and methane geneses in paddy soil [J]. Chinese Journal of Applied Ecology, 2003, (8): 1313-1316.
[3]	GUO Zhaohui, HUANG Changyong, LIAO Bohan . Effects of simulated acid rains on Cd, Cu and Zn release and their form transformation in polluted soils [J]. Chinese Journal of Applied Ecology, 2003, (9): 1547-1550.