Investigation of granulation of a mixture of suspended anaerobic and aerobic cultures under alternating anaerobic/microaerobic/aerobic conditions

ERGUDER T. H., DEMİRER G. N.

PROCESS BIOCHEMISTRY, vol.40, no.12, pp.3732-3741, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 40 Issue: 12
  • Publication Date: 2005
  • Doi Number: 10.1016/j.procbio.2005.05.005
  • Journal Name: PROCESS BIOCHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3732-3741
  • Keywords: aerobic, anaerobic, microaerobic, coupled granules, combined reactor, WASTE-WATER TREATMENT, OXYGEN-LIMITED CONDITIONS, SEQUENCING BATCH REACTOR, UASB REACTORS, ACTIVATED-SLUDGE, BACTERIA, BIODEGRADATION, DEGRADATION, GRANULES, SYSTEM
  • Middle East Technical University Affiliated: Yes

Abstract

This is the first granulation study except Ferguson [Ferguson LN. Anaerobic codigestion of aircraft deicing fluid and microaerobic studies. M.S. Thesis. Milwaukee, WI, USA: Marquette University; 19991 to develop coupled granules by using a mixture of suspended anaerobic and aerobic cultures exposed to alternating cyclic anaerobic/microaerobic/aerobic conditions. Coupled granules with median sizes of 1.28-1.86 mm and settling velocities of 31-39 m/h were developed, which were comparable to those of both anaerobic and aerobic granules. Coupled granules displayed noteworthy specific methanogenic activity (SMA) and specific oxygen uptake rate (SOUR) as 14-42 mL CH4/g VSS h h and 6-47 mg DO/g VSS h, respectively, indicating that they were composed of both anaerobic and aerobic cultures. (c) 2005 Elsevier Ltd. All rights reserved.