A preliminary dynamic model is developed to predict the foaming phenomenon in oxygen steelmaking incorporating Computational Fluid Dynamics, which will be able to simulate the evolution of the physical properties throughout a blow and predict the foaming height with time. The computational fluid dynamic (CFD) model developed by Sattar et al (Sattar et al., 2013a, Sattar et al., 2013c, Sattar et...

Manganese dioxide nanowhiskers (MDN), prepared by the reduction of potassium permanganate by ethyl alcohol has been investigated as an adsorbent for Hg(II) removal from aqueous medium. Characterization of the as-synthesized material was carried out using transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive analysis of X-rays (EDAX), X-ray photoelectron s...

Overexpression of manganese superoxide dismutase (MnSOD) can sensitize a variety of cancer cell lines to many anticancer drugs. Recent work has shown that cancer cells can be sensitized to cell killing by raising peroxide levels through increased manganese superoxide dismutase (MnSOD) when combined with inhibition of peroxide removal. Here we utilize the mechanistic property of one such antican...

Abstract The research aim was to determine the growth response of mixed cultures Acetobacter tropicalis and Lactobacillus fermentum in Stone Mineral Salt solutions (SMSs) soil containing Acid Mine Drainage (AMD) controlled batches. first stage cultivation SMSs followed by preparation pollutant source sensitivity test. second phase removal heavy metals from iron manganese AMD bacterial with cont...

This study aims to synthesize magnetite by a co-precipitation method. The prepared adsorbent coated silica for the efficient removal nickel and manganese ions from aqueous solutions. samples have characterized several techniques like FTIR spectroscopy, XRD, TEM. Surface modification causes ability of removing metals increasing more than 98%. Preliminary results indicate that may be used as an w...

In Malaysia, the quality of groundwater as one main sources drinking water is deteriorated due to presence a high level manganese, which exceeds allowable values for consumption. Manganese at concentration higher than 0.1 mg/L causes staining, turbidity and bad taste problem in water, eventually can cause depletion brain dopamine syndrome motor dysfunction memory loss resembling Parkinson disea...

algae have been proven efficient biological vectors for heavy metal uptake. in order to further study their biosorption potential, two strains spirogyra sp. and spirulina sp. have been studied under different initial metal concentrations. in recent years, the biosorption processes have been studied extensively using microbial biomass as biosorbent for heavy metal ions removal. in these studies,...

Streptococcus sanguinis colonizes teeth and is an important cause of infective endocarditis. Our prior work showed that the lipoprotein SsaB is critical for S. sanguinis virulence for endocarditis and belongs to the LraI family of conserved metal transporters. In this study, we demonstrated that an ssaB mutant accumulates less manganese and iron than its parent. A mutant lacking the manganese-d...

Manganese-based layered oxides have gained wide attention as cathode materials for sodium-ion batteries due to their cost-effectiveness and nontoxicity. Among them, Na2Mn3O7, which shows promising electrochemical properties a host material sodium ions, has been extensively investigated recently. However, the charge compensation mechanisms during battery operation are still ambiguous. Herein, we...

Desorption of metal ions from oxygen-bleached hardwood and softwood kraft pulps by different chelation treatments were studied. The main focus was on desorption of manganese, iron, and magnesium ions, but also on desorption of some other common metal ions. The metal ion concentrations were determined by the DCP-AES and ICP-MS techniques. Acid treatments with nitric and oxalic acids removed mang...