Solidification of methane fermentation remains and its utilization in agriculture
2009
Kitagawa, M.(Tokyo Univ. of Agriculture and Technology, Fuchu (Japan)) | Tojo, S. | Watanabe, K.
For easy use in agriculture, solidification of methane fermentation remains was examined using three types of solidification agents: sodium silicate, agar and superabsorbent polymer. Methane fermentation remains became a solid when mixed with agar; however, the remains were still fluidal after combining with sodium silicate and superabsorbent polymer. NH3 emissions from solidified methane fermentation remains over 7days decreased 9-47% with sodium silicate and decreased 6-39% with superabsorbent polymer. CH4 emission from the sample over 4 hours decreased 0.25-1.08mg/square m with sodium silicate and decreased 0.31-1.41mg/square m with agar, but increased 0.17-0.99 mg/square m with superabsorbent polymer. According to a crops cultivation test using solidified methane fermentation remains as fertilizer, germination was restrained by solidified methane fermentation remains combined with sodium silicate. Crop growth was also influenced measurably with the use of agar and superabsorbent polymer.
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