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Granulation of a mixture of suspended anaerobic and aerobic cultures under alternating anaerobic/microaerobic/aerobic conditions: a preliminary study

✍ Scribed by Tuba H Ergüder; Göksel N Demirer

Publisher
Wiley (John Wiley & Sons)
Year
2005
Tongue
English
Weight
123 KB
Volume
80
Category
Article
ISSN
0268-2575

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✦ Synopsis

Abstract

This paper focuses on a new granulation study area where a mixture of suspended anaerobic and aerobic cultures was used as seed. Mixed suspended anaerobic and aerobic cultures exposed to alternating anaerobic/microaerobic/aerobic conditions developed granulates up to 2.5 mm in size. The granules developed displayed both oxygen uptake (3.83–8.75 mg dissolved oxygen g^−1^ volatile suspended solids h^−1^) and methanogenic activities (7.5 cm^3^ CH~4~ d^−1^) comparable to those of aerobic and anaerobic control cultures, respectively. Oxygen doses of 60, 100 and 120% of the total chemical oxygen demand added (23, 38 and 45 cm^3^) and ethanol (among ethanol, glucose, acetic acid, and glucose + acetic acid) resulted in the largest and the most stable granules. Copyright © 2005 Society of Chemical Industry

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