Wastewater Valorization by Pure Bacterial Cultures to Extracellular Polymeric Substances (EPS) with High Emulsifying Potential and Flocculation Activities

Abstract

emulsifying and flocculation potential activity can be produced from bilge wastewater and crude glycerol. The production of biopolymers with broad biotechnological applications using low-cost substrates can be a means to valorise waste streams.

Characterization of novel extracellular polymeric substances produced by Bacillus velezensis P1 for potential biotechnological applications

“…where B is the optical density of samples containing EPS, and A is the optical density of the control. 25 The optimal concentration of EPS that gave the best result in the above flocculation experiment was chosen to study the effect of pH on flocculation activity. The experiment was assessed by adjusting the pH of the kaolin suspension from 5 to 12 using 1 mol L À1 HCl and 1 mol L À1 NaOH.…”

Exploration of an Extracellular Polymeric Substance from Earthworm Gut Bacterium (Bacillus licheniformis) for Bioflocculation and Heavy Metal Removal Potential

“…where, A is optical density of samples containing EPS, and B is the optical density of the control [9].…”

“…These EPS show unique physiological and physicochemical properties which make them suitable for several clinical, industrial and environmental applications [7,8]. Biopolymers have been recognized by many researchers as potential alternatives to conventional chemical polymers because of their ease of biodegradability, high efficiency, and non-toxic nature [9]. Microbial EPS offer an array of promises for their applications in foods, drug delivery, oil recovery, water purification, and metal removal in mining and industrial waste treatments, and also in downstream processes in fermentation and pharmaceutical industries [10].…”

Peculiarities of microbial exopolysaccharide ethapolan synthesis on mixed waste oils

“…Under Pseudomonas aeruginosa LVD-10 and Enterobacter sp. SW cultivation on technical glycerin (4.5%, v/v), the amount of synthesized polysaccharide was 3.2 and 2.5 g/l, respectively, under undiluted sewage using in quantity of 100 ml, LVD-10 strain synthesized 1.3 g/l, where as SW only -0.7 g/l [6].…”

“…Drakou et al investigated the synthesis of EPS by the Pseudomonas aeruginosa LVD-10 and Enterobacter sp. SW strains on non-carbohydrate substrates [6]. Under Pseudomonas aeruginosa LVD-10 and Enterobacter sp.…”