The production of extracellular polymeric substance (EPS) is important for the survival of biofilms. However, EPS production is costly for bacteria and the bacterial strains that produce EPS (EPS+) grow in the same environment as non-producers (EPS-) leading to competition between these strains for nutrients and space. The outcome of this competition is likely to be dependent on factors such as...

This study aims to investigated the effect of aeration mode on membrane bioreactors (MBRs) using a self-designed integrated hollow fiber MBR and flat sheet organic for rural greywater treatment. The pollutant removal efficiency, characteristics activated sludge mixed liquor, mechanisms fouling were systematically analyzed under intermittent continuous modes. results indicate that permeability M...

Abstract A continuous-flow Anaerobic/Anoxic/Oxic (A2/O) system was operated at different organic concentrations to systematically investigate the effect on nutrient removal, secretion characteristics of extracellular polymer, phosphorus forms transformation and changes in functional flora this system. The results showed that high loading more conducive promote polymeric substance (EPS), increas...

Natural Deep Eutectic Solvents (NADES) are composed of supramolecular interactions two or more natural compounds, such as organic acids, sugars, and amino they being used a new media alternative to conventional solvents. In this study, application NADES is presented possible technology for biofilm structural breaker in complex systems since the current solvents cleaning extraction components us...

Abstract The Salar de Llamara, Atacama Desert is host to saline lakes known as Puquios, which are possible analogs for on early Earth or Mars. Here we examine associations between microbial communities, Mg-clay minerals, and carbonates in mat samples from the Puquios using scanning electron microscopy, energy dispersive X-ray spectroscopy, focused ion beam nanotomography, transmission microscop...

b a ckground : in fact the biofilms are composed of bacterial cells living inmulticellular structures such as tissues and organs embedded within a self-produced matrix of extracellular polymeric substance (eps). ability to attach and biofilm formation are the most important virulence factors staphylococcus aureus isolates. the aims of this study were to detect intracellular adhesion (ica) locus...