Characterization of Extracellular Polymeric Substances (Eps) Produced byCloacibacterium normanense Isolated from Wastewater Sludge for SludgeSettling and Dewatering

In this study, extracellular polymeric substances (EPSs) producing strain was isolated from municipal wastewater sludge (MWWS). Growth profile and the EPS production by Cloacibacterium normanense using wastewater sludge as raw material in shake flask fermentation for 96 h were investigated. The highest concentration of S-EPS (13.0 ± 0.8 g/L) and C-EPS (0.3 ± 0.1 g/L) were attained at 48 h of fermentation. S-EPS revealed higher flocculation activity (94.2%) and dewaterability (59.9%) than other types of EPS in kaolin suspension. The dewaterability of MWWS with 2 g suspended solids (SS)/L was improved by 37.6% using 0.02 ± 0.01 g/L of S-EPS and 600 mg/L of Al2(SO4)3. The study showed a promising approach of new isolated strain to produce high concentration EPS in sludge with high flocculation activity as well as good settling. *Corresponding author: Tyagi RD, University of Quebec, Institut National de la Recherche Scientifique, Centre Eau, Terre and Environnement, 490 de la Couronne, Québec, G1K 9A9, Canada, Tel: +1 418 654 2617; E-mail: [email protected] Received October 02, 2015; Accepted October 13, 2015; Published October 23, 2015 Citation: Nouha K, Hoang NV, Song Y, Tagi RD, Surampalli RY (2015) Characterization of Extracellular Polymeric Substances (Eps) Produced by Cloacibacterium normanense Isolated from Wastewater Sludge for Sludge Settling and Dewatering. J Civil Environ Eng 5: 191. doi:10.4172/2165-784X.1000191 Copyright: © 2015 Nouha K, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.