A study on Air Filled Porosity evolution in sludge composting
by Luz Ruggieri; Teresa Gea; Adriana Artola; Antoni Sanchez
International Journal of Environment and Waste Management (IJEWM), Vol. 9, No. 1/2, 2012

Abstract: Air Filled Porosity (AFP) is a key parameter in the composting process, conditioning oxygen availability and heat accumulation. Air pycnometry is considered the most adequate methodology for AFP determination. This technique requires withdrawing a sample of material from the composting mass for AFP measurement, which may alter its physical characteristics. A novel strategy that permits to measure AFP in situ during the composting process is presented in this study. Raw and Anaerobically Digested Sludges (ADS) have been used as substrates. A common trend in AFP evolution during the composting process has been observed in most of the cases.

Online publication date: Sat, 13-Dec-2014

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