Sources for isolation of extracellular polymeric substances (EPSs) producing bacterial strains which are capable of using wastewater sludge as solo substrate.

Nguyen, Viet Hoang; Nguyen, Hong Khanh; Nguyen, Thanh Dong; Pham, Tuan-Linh; Dang-Thi, Cam-Ha; Song, Yan et Tyagi, Rajeshwar Dayal (2019). Sources for isolation of extracellular polymeric substances (EPSs) producing bacterial strains which are capable of using wastewater sludge as solo substrate. Environmental Technology , vol. 40 , nº 17. pp. 2215-2224. DOI: 10.1080/09593330.2017.1351488.

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Isolation of extracellular polymeric substances (EPSs) producing bacterial strains capable of using sludge as low-cost growth substrate was carried out in this study. A total of 110 EPS-producing strains were isolated from different sources, which include sludge of beer and winery wastewater treatment plant (WWTP); young, 2-month-old and 10-year-old leachate. Thirty-seven isolated strains showed good growth in sludge medium with cell count varying from 106 to 1010most probable number (MPN)/mL and total EPS concentration from 2737 to 6639 mg/L. Twenty-one strains produced EPS with high flocculation activity (FAmaxvaried from 72.0% to 80.2%). The highest FAmax (80.2%) was observed with EPS produced by strain BES 19, which was isolated from sludge of beer WWTP. Sludge of beer WWTP, young leachate and 10-year-old leachate were good sources for isolation of EPS-producing bacteria.

Type de document:	Article
Informations complémentaires:	Résumé avec symboles
Mots-clés libres:	EPS-producing bacteria; isolation; wastewater sludge; sludge recycle; flocculation activity
Centre:	Centre Eau Terre Environnement
Date de dépôt:	29 janv. 2018 21:31
Dernière modification:	25 juill. 2019 18:23
URI:	https://espace.inrs.ca/id/eprint/6357

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