KMS Chongqing Institute of Green and Intelligent Technology, CAS
Production and characterization of high efficiency bioflocculant isolated from Klebsiella sp. ZZ-3 | |
Yin, Ya-Jie1; Tian, Zun-Ming2; Tang, Wei1; Li, Lei1; Song, Li-Yan1,3; McElmurry, Shawn P.4 | |
2014-11-01 | |
摘要 | In this study, a new bioflocculant (ZZ-3) is isolated and evaluated. This novel flocculant was derived Klebsiella, which was identified by 16S rDNA sequencing as well as biochemical and physiological analyses. The composition of ZZ-3 was found to be 84.6% polysaccharides and 6.1% protein. More specifically, the amount (moles) of the polysaccharides rhamnose, mannose, and galactose were found to be 6.48, 2.47, and 1.74 greater than glucose, respectively. Results show ZZ-3 has a relatively high molecular weight (603-1820 kDa) and contains many functional groups (hydroxyl, amide, carboxyl, and methoxyl) that likely contribute to flocculation. The results of microscopic observation, zeta potential measurements, and ZZ-3 bioflocculant structure suggested that bridging was the main mechanism for flocculation with kaolin. Based on a high flocculation efficiency, thermal stability, pH tolerance and the ability to flocculate without additional cations, ZZ-3 shows potential for industrial application. (C) 2014 Elsevier Ltd. All rights reserved. |
关键词 | Klebsiella Sp Zz-3 Bioflocculant Thermal Stability Ph Tolerant Industrial |
DOI | 10.1016/j.biortech.2014.08.094 |
发表期刊 | BIORESOURCE TECHNOLOGY |
ISSN | 0960-8524 |
卷号 | 171页码:336-342 |
收录类别 | SCI |
WOS记录号 | WOS:000343091700048 |
语种 | 英语 |