Abstract
Abstract There has been great progress in the ‘green’ chemistry approach for the synthesis of nanoparticles in recent years. Nanoparticles have gained special significance due to their unique properties. Herein we report a bioflocculant facilitated eco-friendly synthesis of copper nanoparticles (CuNPs). The copper nanoparticles were successfully synthesized through the reduction of copper sulphate (3 mM) solution by the bioflocculant (0.5 g). The synthesized nanoparticles were characterized by Scanning electron microscope equipped with elementary detector (SEM), X-ray diffractometer (XRD), Fourier Transform Infrared Spectrophotometer (FT-IR), Transmission electron microscopy (TEM), and UV spectroscope. CuNPs were applied in the treatment of both the domestic and industrial wastewater, removal of dyes and were confirmed for the antimicrobial effect against both Gram-negative and Gram-positive microorganisms. The synthesized nanoparticles showed great potential for industrial application when compared to the chemical flocculant. In comparison to FeCl3 and bioflocculant, the nanoparticles were found to be effective in BOD and COD removal in coalmine wastewater samples. The highest flocculating activity and removal efficiency was observed at the lowest dosage of 0.2 mg/mL. Moreover, both the Minimal inhibitory concentration (MIC) and Minimal bactericidal concentration (MBC) were observed at the concertation of 12.5 μL.
Published Version
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