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Annually, a city with 500,000 inhabitants generates approximately 115.5 million cubic meters of wastewater. The treatment of this wastewater is efficiently managed using activated sludge, which comprises a diverse community of protozoa, infusoria, lower crustaceans, algae, and microorganisms. These organisms facilitate the effective treatment of large volumes of wastewater in treatment plants. However, the activated sludge proliferates by consuming organic materials in the wastewater, resulting in the accumulation...

The present work is an attempt to create a biosurfactant producing consortia on the bases of initial rhizospheric community of lettuce plant (Lactuca sativa). To obtain consortia, 47 strains from the rhizosphere were isolated and checked upon their ability to produce biosurfactants. The ability of the isolates to produce biosurfactants was analyzed on the basis of their ability to emulsify crude oil (E24 index). The isolates with the highest E24 were Bacillus. oryzaecorticis (80%), B. simplex (65%), Paenibacillus ...