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- Mahimairaja, S.; Bolan, N. S.; Hedley, M. J.
- Compost science & utilization 1993 v.1 no.1 pp. 101-112
- absorption; acidity; ammonia; ammonium; ammonium nitrogen; apatite; bark; calcium; composting; nitrates; nitrification; oxidation; pH; phosphorus; poultry manure; protons; rock phosphate; sodium hydroxide; soil; soil solution; solubilization
- ... Composting systems were designed to utilize ammonia (NH3) released during composting of poultry manure to solubilize phosphate rock (PR). The NH3 released from decomposing manure was allowed to pass through columns containing soil or bark materials mixed with North Carolina phosphate rock (NCPR) at a rate of 1 mg P g−1. After eight weeks of incubation, the columns were dismantled and the forms of ...
- Marugg, C.; Grebus, M.; Hansen, R. C.; Keener, H. M.; Hoitink, H. A. J.
- Compost science & utilization 1993 v.1 no.1 pp. 38-51
- ammonia; composts; emissions; grasses; heat; kinetics; models; particle size; temperature; yard wastes
- ... A new kinetic concept was applied to the yard waste composting process. Yard waste mixtures with different fractions of grass clippings were compos ted in pilot-scale vessels. Ammonia emissions were highest with high fractions of grass clippings. Calculation of reaction rate constants was based on heat and materials balances. Although the compost mass ratios (a dimensionless number that descr ...