Activity and structure of stored aerobic granules.
This study investigates how storage temperatures and periods under extended idle conditions affected the stability and activity of granules that have a high phenol-degrading capability. The granule activity increased as storage temperature decreased, and declined as storage time increased. Granules stored with pure water at room temperature (20.8+/-5.6 degrees C) lost stability after three months storage. Particularly, granules stored with 500 mg l(-1) phenol solution demonstrated high phenol degradation capability following storage. Further, storage at subfreezing temperatures (-20 degrees C) is an ideal way of preserving stability and activity of phenol-fed granules. Anaerobic degradation of proteins in granule core by obligate anaerobic strain such as Bacteroides sp. corresponded to the stability loss of stored granules.
Adav
S S
SS
Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan.
Lee
D J
DJ
Tay
J H
JH
D000332:Aerobiosis; D000693:Anaerobiosis; D001439:Bacteroides / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D019149:Bioreactors; D004269:DNA, Bacterial / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics; D017404:In Situ Hybridization, Fluorescence; D019800:Phenol / Q000378:metabolism*; D012722:Sewage; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000378:metabolism*
D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012722:Sewage; D014874:Water Pollutants, Chemical; D019800:Phenol