The impact of compaction, moisture content, particle size and type of bulking agent on initial physical properties of sludge-bulking agent mixtures before composting
2012
Huet, Joachim | Druilhe, Celine | Tremier, Anne | Benoist, Jean-Claude | Debenest, Gérald | Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) | Université européenne de Bretagne - European University of Brittany (UEB) | Institut de mécanique des fluides de Toulouse (IMFT) ; Université Toulouse III - Paul Sabatier (UT3) ; Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP) ; Université de Toulouse (UT)
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Show more [+] Less [-]English. This study aimed to experimentally acquire evolution profiles between depth, bulk density, Free Air Space (FAS), air permeability and thermal conductivity in initial composting materials. The impact of two different moisture content, two particle size and two types of bulking agent on these four parameters was also evaluated. Bulk density and thermal conductivity both increased with depth while FAS and air permeability both decreased with it. Moreover, depth and moisture content had a significant impact on almost all the four physical parameters contrary to particle size and the type of bulking agent.
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