Bioresource Technology 212 (2016) 120–129 Contents lists available at ScienceDirect Bioresource Technology journal homepage: www.elsevier.com/locate/biortech Heavy metals removal from wastewater using extracellular polymeric substances produced by Cloacibacterium normanense in wastewater sludge supplemented with crude glycerol and study of extracellular polymeric substances extraction by different methods Klai Nouha, Ram Saurabh Kumar, R.D. Tyagi Université du Québec, Institut national de la recherche scientiﬁque, Centre Eau, Terre & Environnement, 490 de la Couronne, Québec G1K 9A9, Canada highlights graphical a bstract Cloacibacterium normanense strain Adsorption and bridging was isolated from wastewater sludge. Negavely charge kaolin parcles 25.5 g/L of EPS was produced in crude glycerol fortiﬁed wastewater sludge. EDTA gave highest EPS extraction efﬁciency. Isolated strain EPS produced exhibited high ﬂocculation activity (>90%) in kaolin solution. High efﬁciency of metal removal was achieved using 35 mg/L EPS. 0 60 120 180 240 300 360 420 480 540 600 660 720 780 840 Incubaon me (h) Al Cu Fe Ni Zn Heavy metal removal ar ti c l e i nf o ab stra ct Article history: Extracellular polymeric substances synthesis by Cloacibacterium was affected by different concentrations Received 18 February 2016 of glycerol in the medium. The concentration of EPS in 72
Bioresource Technology – Elsevier
Published: Jul 1, 2016
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