Recycle of Environmental loading Gases generated in Composting Process
2002 Volume 33 Issue 2 Pages 113-122
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2002 Volume 33 Issue 2 Pages 113-122
The objective of this study is to establish the zero emission composting system that should contain the recycling process of gases generated in the composting process. The characteristics of gas generation during composting were examined with a small composting apparatus. The recycle of nitrogen, contained in gases, was discussed with the experiment of hydroponis culture.
The rate of CO2 evolved in the composting process was high from the start, and after 6 days, it decreased to 2-3g/h·g.DM stably. The total emission of CO2 was 2.3kg/kg.DM for 18 days. The evolution of NH3 was started from the second peak of CO2 rate, and total emission of NH3 was 7.0g/kg.DM for 18 days. The ammonium nitrogen of 44% was converted into the nitrate nitrogen. And this nitrate nitrogen of 56mg per a tomato one body was assimilated in the hydroponis cultivation for 20 days.
