Bio-sorption of Methyl blue from Synthetic wastewater onto copper\zinc oxides Bimetallic Nanoparticles Synthesized by Fusarium oxysporum: Equilibrium isotherms, Kinetic models, Process optimization, and Antibacterial activity

Document Type : Original Article


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

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

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


Recently, nanotechnology plays an important role in solving environmental problems such as wastewater treatment. Metal oxides such as copper oxides and zinc oxides have a role in water purification. Hence, this work aimed to remove Methyl blue dye from a synthetic wastewater sample using an environmentally friendly and cost-effective bio-sorbents; copper\ zinc oxide bimetallic (CuO\ZnO) which was synthesized by a green method using Fussarium oxysporum extract, and the biosorption performance was evaluated through isothermal and kinetic studies. The bio-synthesized CuO\ZnO nanoparticles were characterized by UV–Vis spectrophotometry and transmission electron microscopy (TEM). From TEM micrographs, CuO\ZnO particle size ranged from 9-40 nm and UV spectrophotometry showed the characteristic peak at 241 nm. The bio-synthesized CuO\ZnO NPs had an antibacterial activity against (Staphylococcus aureus, Bacillus subtilis) which represent Gram-positive bacteria, and (Escherichia coli, Klebsiella sp) which represent Gram-negative bacteria was studied resulting in a maximum clear zone of 1mg\mL concentration against Escherichia coli and Staphylococcus aureus more than Klebsilla sp and Bacillus subtilis. The experimental data showed that the Langmuir model and the pseudo-second-order model were fitted to the data and the biosorption capacity reached a maximum and was recorded as 68.199 mg/g.


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