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

ERGUDER T. H., DEMİRER G. N.

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, cilt.80, sa.7, ss.837-842, 2005 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 80 Sayı: 7
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1002/jctb.1296
  • Dergi Adı: JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.837-842
  • Anahtar Kelimeler: aerobic, anaerobic, combined systems, granule, microaerobic, oxygen, OXYGEN-LIMITED CONDITIONS, UASB REACTORS, BIODEGRADATION, BIOTRANSFORMATION, DEGRADATION, SYSTEM
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

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) CH4 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. (c) 2005 Society of Chemical Industry.