Production, Application, and Efficacy of Biodefoamers from Bacillus, Aeromonas, Klebsiella, Comamonas spp. Consortium for the Defoamation of Poultry Slaughterhouse Wastewater

Activated sludge (AS) treatment systems’ major limitation is the nuisance foaming at surface of aeration basin in wastewater plants (WWTPs). This foam can be stabilized by biofoamers and surfactants to treated. In order control foam, synthetic defoamers are used; however, these toxic environment. study aimed optimize production biodefoamers quantifying reduction efficiency collapse isolate pervasive poultry slaughterhouse (PSW). Before their identification characterization, nine bacterial isolates were isolated assessed for efficiency. These organisms produced minute under various conditions generated on response methodology (RSM). The that with high a lower rate Bacillus, Aeromonas, Klebsiella, Commamonas spp. consortia. At 4% (v defoamer/v PSW), crude consortium had 96% 1.7 mm/s rate, which was comparable 2.5 active silicone polymer antifoam A/defoamer Sigma-Aldrich, defoamer. mm/s, all achieved pH 7 less than 50 s. application biodefoamer resulted compacted flocs, filament protruding flocs observed when defoamer used. showed presence alkane, amine, carboxyl hydroxyl groups, indicated polysaccharide core structure. 1H NMR analysis further confirmed carbohydrate polymers. reports first time comparability