I see many papers using different setups for small-scale in-vessel composting: from Dewar vessels (1.5-2L) to insulated (3-10cm surface layer) containers (e.g. 40x60cm) up to air-controlled 200L bins with CO2, NH3 probes and controlled air flow, etc.
I am looking for a simple methodology for evaluating composting in small scale (10-100kg of material to be composted), without controlling temperature (but rather monitoring the actual process) or gas emissions.
To emulate basic in-vessel conditions you could use 25L drums with screened holes in top and bottom and turn when required. MC, EC, temp are easily monitored with probes and NH3 sample monitoring via solvita tests or other testing methods outlined in the compost standards for your region.
Hi Sonia, thanks for the tip. Would you recommend a determined thickness to the insulation of the drum? And also, would you have any references that used similar drums as the one you mention?`
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