The flocculation of dissolved heavy metals is a process which has an important effect on decreasing the concentration of the colloidal elements during estuarine mixing of river water and sea or ocean water. During this important process, a large amount of colloidal elements change into particles in the form of flock and the dissolved loads decline. This study is performed to evaluate the mechani...

The present study describes the effectiveness of removal of selected aqueous anions by several metalloligs, i.e., metal derivatives of a commercially available immobilized ligand, IMLIG, Octolig. This material consists of polyethylenediamine moieties covalently bound to a high-surface area silica gel (CAS Registry number = 404899-06-5). The metals involved are copper, cobalt, iron, nickel, mang...

The addition of manganese to cobalt-based Fischer-Tropsch catalysts increases activity and significantly improves liquid fuel yield by decreasing CO2 CH4 selectivity. These effects are particularly noticeable at high CO conversions where the catalyst is exposed H2O, low H2, partial pressures. Under these conditions, manganese-promotion causes a shift in maximum from 61 C-% 79 (at CO-conversion ...

UNLABELLED Manganese plays an important role in the cellular physiology and metabolism of bacterial species, including the human pathogen Vibrio cholerae The intracellular level of manganese ions is controlled through coordinated regulation of the import and export of this element. We have identified a putative manganese exporter (VC0022), named mneA (manganese exporter A), which is highly cons...

The heme of hydrogen peroxide-dependent cytochrome P450BSb (P450BSb) was removed by apomyoglobin under mild conditions to give apo-P450BSb without the need for acidic conditions and organic solvents. The circular dichroism spectrum of the apo-P450BSb was essentially identical to that of holo-P450BSb, showing a small structural change resulting from the removal of heme using apomyoglobin. The ap...

Considering the potential use of manganese oxide based nanocomposite in catalytic ozonation of water contaminant, we report unique three-dimensional (3D) nanoarchitectures composed of β-MnO2 and reduced graphene oxide (RGO) for catalytic ozonation of dichloroacetic acid (DCAA) from drinking water. The catalytic results show that the 3D β-MnO2/RGO nanocomposites (FMOG) can be used as efficient a...

Cow bone charcoal (CBC) was synthesized and used for the removal of metals ions (manganese, iron, nickel and copper) from aqueous solutions. Two different adsorption models were used for analyzing the data. Adsorption capacities were determined: copper ions exhibit the greatest adsorption on cow bone charcoal because of their size and pH conditions. Adsorption capacity varies as a function of p...

Escherichia coli does not routinely import manganese, but it will do so when iron is unavailable, so that manganese can substitute for iron as an enzyme cofactor. When intracellular manganese levels are low, the cell induces the MntH manganese importer plus MntS, a small protein of unknown function; when manganese levels are high, the cell induces the MntP manganese exporter and reduces express...

Abstract The wastewater containing phenol is harmful, and the process complicated, photocatalytic oxidation technology believed to be greenest promising strategy for contaminants removal because of solar energy utilization no additional oxidants. Herein, manganese dioxide(MnO 2 ) doped with metal was fabricated by a low-temperature hydrothermal method, specific surface area MnO photocatalyst si...