Today, environmental pollutants pose a threat to human societies and all living organisms, which is why they have attracted the attention of environmental researchers. In this study, dye adsorption from aqueous media with CSNP-SiO2 Nanocomposite was investigated. The effects of different variables such as adsorbent dosage, pH, and temperature were studied. The results obtained showed that the adsorption of Methylene blue is dependent on adsorbent dosage, pH, and temperature. It was noted that the adsorption of all the dyes on CSNP-SiO2 Nanocomposite decreases with an increase in the dosages, pH, and temperature. The adsorption isotherms at different temperatures were found to be of L-type. The optimum adsorbent dosage, pH, and temperature were found to be 3g/L, pH 6.4, and 60ºC, respectively. Adsorption equilibrium data of aqueous solutions were analyzed using Langmuir and Freundlich isotherms. The isotherm data could be well described by the Freundlich and Langmuir equations in the concentration range of 20-100 mg/l. An alkaline pH was favorable for the adsorption of dyes. Based on the adsorption capacity, it was shown that CSNP-SiO2 Nanocomposite was a more effective removal dye solution.
Because of its promising biological achievements, the development of nanotechnology, nanoparticle-based products, and their applications has piqued the interest of many researchers. Inorganic nanomaterials, on the other hand, are well known to be effective antimicrobial agents. Metal nanoparticles, such as Silicon dioxide, are particularly important among the various nanoparticles due to their low cost and ease of availability. Chitosan is a biopolymer derived from chitin, a natural polysaccharide that follows cellulose as the second most abundant polysaccharide. The Precipitation Method was used to create a Chitosan Nanoparticle with SiO2 Nanocomposite (CSNP - SiO2 nanocomposite). TGA, XRD, SEM, FT-IR, PSA, UV, and FL were used to characterize the Chitosan Nanoparticle with SiO2 Nanocomposite. The findings showed that bio-nanocomposites have a greater antibacterial effect due to the combined effect of CS and nanoparticles (NPs). Chitosan/SiO2 nanocomposites were tested for antimicrobial activity against gram-positive and gram-negative microorganisms. The goal was to assess their physical, mechanical, and biological properties, as well as their potential for biomedical applications.
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