A Bench-Scale System to Study the Composting of Organic Wastes
1982
Ashbolt, N. J. | Line, M. A.
In an investigation of the composting of eucalypt bark, a bench-scale composter was designed to provide strict control over air composition, moisture content, temperature, and mixing. The composter consisted of six 4-L capacity gas-tight units of PVC plastic, each of which was provided with a mixing paddle coupled to a common drive. Natural temperature rise was simulated by having the units immersed in a water bath, with the temperature increased at rates consistent with those observed in large-scale compost heaps. This provided a comparatively inexpensive versatile system, with rates of CO₂, NH₃, CH₄, and H₂S production and O₂ consumption manually monitored by gas chromatography. The reproducibility of the system was as good as the best reported.
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