https://scholars.lib.ntu.edu.tw/handle/123456789/408243
標題: | Drying and re-cultivation of aerobic granules | 作者: | Lv Y. Wan C. Liu X. Zhang Y. Lee D.-J. Tay J.-H. |
關鍵字: | Drying;Microbial community;Re-cultivation;Structural stability | 公開日期: | 2013 | 卷: | 129 | 起(迄)頁: | 700-703 | 來源出版物: | Bioresource Technology | 摘要: | Aerobic granules stored in liquid medium can lose structural integrity during storage. This study demonstrated that the aerobic granules cultivated by seeding activated sludge into column-type sequential batch reactors and fed with synthetic wastewater at organic loading rate of 1.5kg/m3-d can be dried by acetone gradient method to moisture content less than 1%. Then, the dried granules can be reactivated through a re-cultivation process to recover their organic degradation capacity in 12h, or their appearance in 5d. During the drying and recovery, the granules experienced volume and weight losses by >80% and >85%, respectively, with minimal loss in structural integrity. The microbial communities of the dried and re-cultivated granules were probed using polymerase chain reaction-denaturing gradient gel electrophoresis technique. The family Xanthomonadaceae and the family Comamonas can survive in dried granules and could contribute to maintain structural integrity in re-cultivation stage. ? 2013 Elsevier Ltd. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/408243 | ISSN: | 09608524 | DOI: | 10.1016/j.biortech.2012.12.178 |
顯示於: | 化學工程學系 |
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