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Influence of biogas-induced mixing on granulation in UASB reactors

Paper ID Volume ID Publish Year Pages File Format Full-Text
4367 223 2008 6 PDF Available
Title
Influence of biogas-induced mixing on granulation in UASB reactors
Abstract

Studies have been carried out to correlate biogas-induced mixing and granulation in upflow anaerobic sludge blanket (UASB) reactors, treating low-strength as well as high-strength biodegradable wastewaters. A dimensionless granulation index (GI) has been framed taking into account the mixing in sludge bed due to produced biogas. Analysis of full-scale, pilot-scale and lab-scale UASB reactors treating actual wastewaters reveals the significance of biogas-induced mixing, represented by GI, on granulation of biomass in the reactors. For obtaining proper granulation in UASB reactors (percentage granules greater than 50%, w/w), resulting in higher chemical oxygen demand (COD) removal efficiency, it is recommended to maintain GI values in the range of 15,000–57,000.

Keywords
Granulation; Granulation index (GI); Mixing; UASB; Velocity gradient
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Influence of biogas-induced mixing on granulation in UASB reactors
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 41, Issue 2, 1 September 2008, Pages 136–141
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
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Price was $35.95
You save - $31
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