Storage and handling characteristics of pellets from poultry litter
2005
McMullen, J. | Fasina, O.O. | Wood, C.W. | Feng, Y.
Poultry litter (combination of accumulated manure and bedding materials) was pelleted through a 3/16-in. (4.76-mm) diameter die. The storage and handling properties of the pellets were measured within a moisture range of 6.0% and 22.0% (w.b.). Bulk density and particle density of the pelleted litter respectively decreased and increased with increase in moisture content. The force required to rupture the pellets varied from 316 N at 6.0% moisture content to 68 N at 22.0% w.b. Durability of the pellets were also affected by moisture content. Pellet moisture absorption rates were significantly (P < 0.05) affected by air relative humidity. The values of thermal conductivity, thermal diffusivity and specific heat for the pellets were respectively obtained to be 0.264W/m K, 2.67 x 10(-7) m2/s, and 1265.6 J/kg K.
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