Mill scale is very attractive industrial waste due to its richness in iron (about = 72% Fe). In this paper, the characterizations of mill scale were studied by different methods of analyses. The produced mill scale briquettes were reduced with hydrogen at varying temperatures, and the reduction kinetics was determined. Two models were applied and the energy of activation was calculated.

Mill scale is very attractive industrial waste since it is rich in iron (about = 72 % Fe) and it is suiTab. for direct recycling to the blast furnace via sintering plant. In this paper the characterizations of raw materials were studied by different methods of analyses. The produced briquettes were reduced with different amounts of hydrogen at varying temperatures, and the reduction kinetics was determined. Two models were applied and the energy of activation was calculated.

ILMS of low-density polyethylene (LDPE) either blended or coated with different weight percentage (2, 4 and 6 %) of silver-modified reduced graphene oxide (Ag/rGO) have been prepared. Neat LDPE and LDPE blended with Ag/rGO nanocomposite films were prepared by simple casting method while LDPE films coated by Ag/rGO nanocomposite were prepared by applying corona discharge to the as prepared neat LDPE. The prepared samples have been characterized by FTIR, XRD, SEM, EDAX, TEM, DSC and TGA. The mechanical properties and the antimicrobial activities have been examined and compared with that of neat LDPE. From the obtained results, the mechanical properties of polyethylene film were enhanced by blending with very small amount of the as-prepared nanocomposite. The tensile strength of the LDPE film increased up to 60% when added just 4 wt% of Ag/rGO nanocomposite. Coating LDPE by Ag/rGO nanocomposite did not improve the mechanical properties but exhibited antimicrobial activities against E.Coli and S.Aureus. As the % of Ag/rGO nanocomposite increased in the surface coating layer the antibacterial efficiency increased.