In-situ growth of manganese oxide on self-assembled 3D- magnesium hydroxide coated on polyurethane: Catalytic oxidation mechanism and application for Mn(II) removal

Effects of magnesium hydroxide morphology on Pb(ii) removal from aqueous solutions

“…3a, both FGMH and HPMH exhibited characteristics resembling type-IV isotherms and type-H3 hysteresis loops. 21 Calculated using the BET and BJH model, the surface area and pore volume of FGMH were 60.46 m 2 g −1 and 0.60 m 3 g −1 , respectively, significantly exceeding those of HPMH (with a surface area of 8.70 m 2 g −1 and a pore volume of 0.08 m 3 g −1 ). The pore size distribution of both FGMH and HPMH primarily ranged from 10 to 40 nm, indicative of mesoporous structural characteristics (Fig.…”

“…In recent years, metal hydroxides and metal oxides have attracted considerable attention as adsorbents owing to their affordability, excellent adsorption properties, and environmental friendliness. 20,21 Notably, micro/nanosized magnesium hydroxide (MH) has emerged as a promising candidate for heavy metal removal. For example, Jiang et al reported that flower-shaped globular MH could remove 92.6% of Ni( ii ) ions from wastewater through chemical adsorption.…”

Application of Magnesium Oxide for Metal Removal in Mine Water Treatment

“…Divalent metals such as Mn, Cu, and Zn may be removed by adsorption and/or catalytic oxidation [55][56][57][58][59]. These metal removal mechanisms together with hydration products may be the main chemical processes related with the application of magnesium oxide in mine water treatment.…”

Adsorption removal of Mn2+ and NH4+–N from electrolytic manganese metal wastewater by modified phosphate ore flotation tailings

“…Mn 2+ and NH 4 + -N can be removed by catalytic oxidation, chemical oxidation, physicochemical adsorption, breaking point chlorination, membrane treatment, biophysical methods, electrochemical, chemical precipitation and stripping methods. [9][10][11][12][13][14][15][16][17][18][19] In industrial production, Mn 2+ Mn 2+ and NH 4 + -N were main removed in the form of solidified precipitates and converted to ammonia gas, respectively. The above methods can remove high concentrations of Mn 2+ and NH 4 + -N, but low concentrations of Mn 2+ and NH 4 + -N also remain in the EMMW.…”