Mangwandi, C,Liu, J,Albadarin, AB,Allen, SJ,Walker, GM

2013

January

Waste Management

The variability in nutrient composition of Anaerobic Digestate granules produced from high shear granulation

Published

()

Anaerobic Digestate Granulation Homogeniety Mixing Fertilizer BINDER DISTRIBUTION GROWTH MECHANISMS HOMOGENEITY MIXER SEGREGATION MIXTURES BLENDER INHOMOGENEITY PARTICLES SPEED

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This study investigates the production of organic fertilizer using Anaerobic Digestate (as a nutrient source) and limestone powder as the raw materials. A two-level factorial experimental design was used to determine the influence of process variables on the nutrient homogeneity within the granules. Increasing the liquid-to-solid ratio during granulation resulted in increased granule nutrient homogeneity. Increasing the processing time and the impeller speed were also found to increase the nutrient homogeneity. In terms of nutrients release into deionized water, the granules effectively released both potassium and phosphate into solution. (c) 2012 Elsevier Ltd. All rights reserved.

10.1016/j.wasman.2012.09.005