Engineering and Technology Journal

The reason of this study is to consider the removal of heavy metal lead (Pb) and cadmium (Cd) in wastewater by magnetic material using ferrite. It has been use batch experiments and operating condition are, ph(10,7and5) and time (20, 40, 60.80.100, 120) min and temperature (30) 0C after that we find the optimum condition to remove heavy metal. heavy metal in water detected by using Atomic Absorption (AA) before and after adding Cu-ferrites powder while the Cu-ferrites was characteristic by XRD and SEM ,result indicate that Cu-ferrites powder spinel structure and the particle size in range (30-40)nm ,and explain antimicrobial effectiveness of ferrites material from effect on gram positive and negative bacteria and the results appeared ability of copper ferrites to inhibition growth of both E. coli as example of gram negative bacteria and S. aureus as example of gram positive bacteria while was the E. coli survival rate of all ferrite nanoparticles concentration is more than the S. aureus survival rate , the percentage survival of bacteria was ( 35 , 20 , 12 , 5 %) in (0.625 , 1.25 , 2.5 , 5 mg/ml) concentration of microorganisms E.coli and ( 28 , 15 , 8 , 3 %) in (0.625 , 1.25 , 2.5 , 5 mg/ml) concentration for bacteria Staph. Aureus

Corrosion processes are accountable for serious losses in the oil industry. Although organic and inorganic materials and mixed materials inhibitors have been used for a long time to control or reduce corrosion. Using nano-materials as inhibitors has gained an increasing applications role because of their exceptional properties. Nano materials are good corrosion inhibitors because they possess many advantages such as high efficiency of inhibition, low cost, minimum toxicity and effortless production. This work examines the use of nano-materials as inhibitors to prevent corrosion of carbon steel in drilling mud. Anti-corrosion properties of zinc and nickel ferrite nano materials (ZnFe2O4, Zn0.6Ni0.4Fe2O4) have been investigated over carbon steel in local Iraqi bentonite mud as a source of the corrosion. It has been found that under the given conditions, ferrites act as efficient corrosion inhibitors of carbon steel.

In this work, it has been used two methods to prepare ferrite thin film: festival “Auto combustion “and secondly “Pulse laser deposition” to synthesis copper ferrite as powder and thin film respectively. Different physical properties have been studied. XRD results indicated that synthesized ferrite as powder and thin film with two different energy (700-800) mJ prepared, where single cubic phase with spinel structure have. SEM photographs showed the spherical shape of particles with average size in range (88-109µm) and how these particles would create a uniform shape of film via laser with energy 800 mJ. Transmittance results showed that thin films prepared with low energy (i.e. 700 mJ) has higher transmittance as compared with that prepared via high energy. Furthermore more thin films band gap recorded increment from 3.8eV - 3.97 eV as laser energy increased from 700 mJ to 800mJ.

In this research prepared samples of CuZn-ferrites were substation of copper ions by zinc ions as a composition formula Cu1-x ZnxFe2O4 ferrite (with x = 0.0, 0.1, 0.2, 0.3) and studying the properties of composition using FTIR spectroscopy established creation of spinel ferrite and presented the features of absorption bands around 561.29-405 cm−1. X-ray diffraction (XRD) exposed that the structure of these nano particles is spinel and crystallite size lies in the range (12.22–23.9) nm. observed when added zinc ions, found increase in particle size and lattice constant while decrease in Xrd-density, and also have been identified the behavior of material Ferrite in low frequencies permeability magnetic used LCR meter , found when increasing the frequency (1-200) KHz decries in magnetic permeability (μ′) this usual behavior in ferrites and observed a significant increase in magnetic permeability when increasing zinc ions due to the effect of zinc on the internal structure of copper ferrite. At Low frequency institute that the permeability raises with Zn contented rise from (0 - 0.3) in Cu-ferrites.

NiZnMg-Ferrite Nano ceramics were prepared by using sol-gel auto combustion method, these ferrites then pelletized and sintered at different temperatures (1000, 1100 and 1200 0C). Ferrite samples showed spinel structure and inherent ‎properties of high electrical resistivity, low electrical losses and high theoretical ‎densities. Therefore, these ferrites have a potential candidate for high frequency applications. The electrical and structural ‎properties of Ni0.7-yZn0.3MgyFe2O4 (where; y= 0, 0.1, 0.2 and 0.3) were studied and that shows an effect of chemical composition ‎on the electrical, structural, and physical properties depending on Mg content in the Ferrite. Chemical phase analysis carried out by x-ray diffraction spectrum ‎confirms the formation of ferrite Nanopowders with size (22.6 nm), and found that the lattice parameters and particle sizes increase, while theoretical density and porosity ‎decreases with increasing of Mg content in the NiZnMg Ferrites. Resistivity of all samples has been measured at temperatures in the range of ‎‎ (300-540 K), which decreases with increasing of temperatures like ‎a semiconductor behavior.