Bioremediation of Congo red Dyes using Biosynthesized copper\iron Nanoparticles

Document Type : Original Article


1 Botany Department, Faculty of Science, Mansoura University, Egypt

2 Department of Aquatic Environmental Science, Faculty of Fish Resources, Suez University, Egypt

3 City of Scientific Research and Technological Applications, (SRTA-City), New Borg El-Arab City,P.O.Box 1121934, Egypt

4 National Institute of Oceanography and Fisheries (NIOF), Cairo 11865, Egypt.


Water contamination by organic dyes and pathogenic bacteria has a negative impact on human health. Bimetallic nanoparticles are promising materials in water treatment. In the current study, a bimetallic of copper and iron nanoparticles (CuO/Fe2O3 NPs) was synthesized by the extract of Fusarium oxysporum. CuO/Fe2O3 NPs were characterized using different methods such as UV–Vis spectroscopy and transmission electron microscopy (TEM). The micrographs of TEM showed particle sizes ranging from 4-12 nm while UV–Vis analysis exposed the characteristic peak at 277 nm after the synthesis of CuO/Fe2O3 NPs. The antimicrobial activity of CuO/Fe2O3 NPs was tested against Gram +ve (Streptococcus sp, Bacillus subtitles), and Gram -ve (E. coli, Salmonella typhi) bacteria. The biosorption of Congo Red (CR) dye using the bio-synthesized CuO/Fe2O3 NPs was studied. The biosorption studies were investigated at different time intervals and different dye concentrations. The studies revealed that the bio-sorption percentage of 97.167 % was achieved only after 10 min of contact at 25 ppm. The maximum Langmuir isotherm adsorption capacity was 155.738 mg/g. For the kinetic studies, the bio-sorption process followed the pseudo-second-order model and it was involved in more than one single kinetic stage.


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