廃水処理に伴うN_2O放出量の低減に向けた発生機構の解析(<特集$gt;「地球大気変動と微生物」)

概要

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Tropospheric increment of N_2O is of great concern in global warming issue and stratospheric ozone chemistry, which is largely attributed to the human-induced alteration of nitrogen cycle. Biological waste water treatment is a terminal destination of industrially fixed nitrogen as well as a hot spot for N_2O emission. The present understanding of microbial pathways suggests that N_2O is a by-product of ammonium oxidation and an obligate intermediate product of denitrification. Therefore, a conventional mass balance approach is insufficient to elucidate producing mechanisms of N_2O in common environments where coupling of nitrification and denitrification occurs. In this context, we proposed the measurement of natural abundance of nitrogen and oxygen isotopes to be applied for analysis of N_2O dynamics in a waste water treatment facility, and discussed future perspective of the technique.
日本微生物生態学会の論文
1998-03-31