Effect of moisture content of a wood matrix on a small-scale biodegradation system for organic solid waste |
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| Authors: | Sakae Horisawa Yutaka Tamai Yoh Sakuma Shuichi Doi Minoru Terazawa |
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| Affiliation: | (1) Institute of Wood Technology, Akita Prefectural University, Noshiro, 016-0876 Akita, Japan;(2) Biological Resources Division, Japan International Research Center for Agricultural Sciences, 305-0851 Tsukuba, Japan;(3) Graduate School of Agriculture, Hokkaido University, Sapporo, 060-8589 Hokkaido, Japan |
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| Abstract: | The optimum working moisture content of a wood matrix for the garbage automatic decomposer-extinguisher (GADE) machine was investigated using a small-scale degradation reactor. A formula feed for rabbits was used as the model waste. The degradation experiment was conducted under controlled conditions such as moisture content, environmental temperature, and airflow rate. The degradation rate was estimated precisely from weight loss and the CO2 evolution rate. The degradation rate were nearly constant at a moisture content of 30%–80% on a-wet-weight basis. Microorganisms from the environment propagated in the reactor with no inoculums added. The number of microorganisms showed a trend similar to that of the degradation rate. The microorganism community changed according to the moisture content of the matrix and were considered to attain a constant degradation rate at a wide range of moisture content of a matrix.Part of this report was presented at the 49th annual meeting of the Japan Wood Research Society, Tokyo, April 1999 |
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| Keywords: | Food waste Biodegradation Wood particles Moisture content Microorganism |
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