Synthesis Optimization and Inhibition Effects of Bismuth-BAL Chelate on Escherichia coli, Streptococcus pyogenes, and Activated Sludge

With the development of technology and engineering, different highly qualified products can be manufactured and used with a wide range. This highly qualified micro- and nano-technological materials can be easily covered with bacteria colonies and biofilms. Researchers have tried to synthesize different anti-bacterial chemicals to solve this problem. The formation of biofilm on the surface and in the pores, which is caused by the extracellular polymeric substances (EPS) and soluble microbial products (SMP), has long been identified as a problem for engineering applications. The total polysaccharides and proteins secreted by microorganisms can be decreased when exposed to the synthesized bismuth-BAL chelate (BisBAL). Our proposal is to inhibit the EPS and SMP from Escherichia coli and Streptococcus pyogenes. The anti-bacterial properties of synthesized chemicals that have several combinations of bismuth metal with lipophilic thiol compound were examined to get the optimum inhibitor. The application strategies and stability of BisBAL were also studied. The chelate can be used as a compound of membranes used in membrane bioreactors, which will be an obligation of advanced wastewater treatment with the aims of the protection of natural water sources’ quality and supply the water demand, to prevent the biofouling