Activity and structure of stored aerobic granules

被引：48

作者：

Adav, S. S. ^{[1
]}

Lee, D-J. ^{[1
]}

Tay, J. H. ^{[2
]}

机构：

[1] Natl Taiwan Univ, Dept Chem Engn, Taipei 10617, Taiwan

[2] Nanyang Technol Univ, Inst Environm Sci & Engn, Singapore 639798, Singapore

来源：

ENVIRONMENTAL TECHNOLOGY | 2007年 / 28卷 / 11期

关键词：

granule structure; confocal laser scanning microscope; phenol degradation; EXTENDED IDLE CONDITIONS; ACTIVATED-SLUDGE; PRESERVATION; FLOC;

D O I：

10.1080/09593332808618883

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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.

引用

页码：1227 / 1235

页数：9