Superhydrophobic nanocarbon‐based membrane with antibacterial characteristics

Abstract

To overcome the biofouling challenge which faces membrane water treatment processed, the novel superhydrophobic carbon nanomaterials impregnated on/powder activated carbon (CNMs/PAC) was utilized to successfully design prepare an antimicrobial membrane. The research was conducted following a systematic statistical design of experiments technique considering various parameters of composite membrane fabrication. The impact of these parameters of composite membrane on Staphylococcus aureus growth was investigated. The bacteria growth was analyzed through spectrophotometer and SEM. The effect of CNMs' hydrophobicity on the bacterial colonies revealed a decrease in the abundance of bacterial colonies and an alteration in structure with increasing the hydrophobicity. The results revealed that the optimum preparative conditions for carbon loading CNMs/PAC was 363.04 mg with a polymer concentration of 22.64 g/100 g, and a casting knife thickness of 133.91 μm. These conditions have resulted in decreasing the number of bacteria colonies to about 7.56 CFU. Our results provided a strong evidence on the antibacterial effect and consequently on the antibiofouling potential of CNMs/PAC in membrane.

One-Step and Low-Cost Designing of Two-Layered Active-Layer Superhydrophobic Silicalite-1/PDMS Membrane for Simultaneously Achieving Superior Bioethanol Pervaporation and Fouling/Biofouling Resistance

“…Therefore, the opportunity for microorganisms’ growth and foulants’ deposition should be restricted by modifying the membrane surface characteristics. The reduction of the cake layer formation rate leads to a limitation of the membrane fouling. , The chance of occurrence of membrane fouling depends on the material, chemistry, and morphology of the membrane surface and the foulants . Accordingly, these properties of microorganisms and the membrane surface are examined in comparison with each other.…”

Comparative Study of Biotin and Hydroxyapatite on Biological Properties of Composite Coating

“…Due to differences in surface properties, there was also a small difference in cell viability among alloys. As seen in the MTT plots, the investigation suggests that certain alloys have a considerable effect on cell viability [ 30 , 31 ].…”

“…Furthermore, cell viability exhibits no symptoms of aggression because of 316 stainless steel or other additions. Because of variations in surface properties, the development of hydroxyapatite and biotin, which are essentially biomedical materials, did not increase surface bioactivity [ 31 ].…”

Origin of Fluoropolymer Affinity toward Water and Its Impact on Membrane Performance

“…17 More recently, with the emergence of new materials and improved membrane designs, nonconventional membrane applications such as membrane distillation (MD), membrane absorbers, and membrane crystallizers have been gaining strong momentum. 21 Particularly, MD is considered to be the next generation desalination platform that can treat highly concentrated brine (the byproduct of the reverse osmosis process), which can be a fruitful source of valuable minerals (Li + ) and renewable energy (osmotic potential).…”

“…Generally, hydrophobic membranes are required as the membrane must stay dry ( e.g. , not wetted) during operation. , However, simply employing hydrophobic membranes is not sufficient as vapor adsorption onto the membrane material can also initiate the wetting phenomenon. Hence, a fundamental understanding of the material–water interaction is the key challenge.…”