Synthesis of silver and gold nanoparticles for the prevention of biofouling in waste water

Biosynthesis of silver and gold nanoparticles is extracted by plant leaves of M. Piperita and C. latifolium and the synthesis of nanoparticles is analyzed by UV–Vis spectroscopic. The antimicrobial activity of Ag-NPs and Au-NPs are analyzed by gram-positive and gram-negative bacteria. Bacterial biofilms represent a significant problem in wastewater. Biofilm is embedded in its own microbial-originated matrix of protective and adhesive of extracellular polymeric substances (EPSs). The nanoparticles have inhibited the biofilm and the anti-biofilm activity against the biofilm forming in wastewater. The silver nanoparticles are succeeded to form relatively low adherent biofilm. The pretreatment of Ag-NPs was aimed at controlling biofilm formation on the surface in water.