ISSN:
1432-0614
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Summary To investigate mass-transfer resistance in granules, the effect of disintegration on the specific methanogenic activity (SMA) of acetate-grown anaerobic, thermophilic (55°C) granules was measured. Four different methods of disintegration were used; vortex mixing, ultra-sound, blending and repeated syrine aspiration. When H2/CO2 was used as the substrate, disintegrated granules showed a higher SMA than intact granules. However, with acetate as substrate, no effect was observed when granules disintegrated using a vortex mixer or ultra-sound, whereas both the blender- and syringe-treated granules had lower SMAs compared to intact granules. An “effectiveness factor”, ν, the ratio of the SMA of disintegrated granules to the SMA of intact granules, was presented and found useful for describing the effectiveness of disintegration to relieve mass-transfer limitation on the granules.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00169637
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