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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; Tyagi, Rajeshwar Dayal (9999). Sources for isolation of extracellular polymeric substances (EPSs) producing bacterial strains which are capable of using wastewater sludge as solo substrate. Environmental Technology . p. 1-10. DOI: 10.1080/09593330.2017.1351488. (Sous Presse)

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Résumé

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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: 29 janv. 2018 21:31
URI: http://espace.inrs.ca/id/eprint/6357

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