Aug 01, 2011 · The effects of various environmental parameters such as residence time, pH, ionic strength, and temperature on the adsorption behavior of Pb(II) have been extensively studied ( Zhao et al., 2011 ...
Aug 01, 2018 · Hematite nanocrystals are ubiquitous in natural environments, and because of their strong sorption properties these particles can influence the mobility and fate of toxic .
Mar 26, 2009 · Fe (II) and Ni (II) sorption to cells and hematite increased in the presence of SHA, suggesting that surface passivation or saturation of sorption surface area through the formation of ternary SHANi (II)–hematite complexes appear responsible for the increased inhibitory effects by nickel observed. Figures References Details Cited By
Feb 01, 2018 · Based on the clarifiion tests and adsorption analysis it was demonstrated that the magnetic starch produced better clarifiion effect than the caustic starch, and the adsorption of magnetic starch onto hematite tailings particles was also stronger than the caustic starch.
The optimization of multiple interfaces in hematite (αFe 2 O 3) based composites for photoelectrochemical water splitting to facilitate charge transport in the bulk is of paramount importance to obtain enhanced solartofuel efficiency.
Nanoparticles are ubiquitous in environment and are potentially important in many environmental processes such as sorption, coprecipitation, redox reactions, and dissolution. To investigate particle size effects on nanoparticle aggregation and stability, this study tested aggregation behavior of 12(±2), 32(±3), and 65(±3) nm (hydrated radius) hematite particles .
Jun 17, 2016 · A few works have reported the effects of IONPs on the germination and growth of plants. For example, it has been reported that daily additions of Fe 3 O 4 NPs in the presence of static magnetic fields, increased the growth of Zea mayz and the levels of chlorophyll ( Răcuciu and Creangă, 2007 ).
Sep 27, 2021 · Environmental context. Hematite nanoparticles are efficient adsorbents for proteins and pollutants in environmental and biological systems. Hematite and the protein bovine serum albumin (BSA) were used as models to investigate the surface chemistry and competitive role of BSA in arsenate adsorption.
It is shown that hematite NPs are taken up by the roots of the barley plants, and migrate to the plant leaves, and are phytotoxic for barley as they inhibit germination and pigment biosynthesis. There has been a growing concern with the environmental influences of nanomaterials due to recent developments in nanotechnology.
Jun 29, 2006 · The radioactive contamination at WEC's Hematite, Missouri site consists of soils, and building and equipment surfaces contaminated with uranium, fission products, and byproduct material from licensed operations that occurred from the mid 1950s until 2001.
The hematite nanoparticle fertilizer drop promoted a 230830% increase in plant growth with green gram showing the highest increase, based on our prolonged and statistically reliable growth studies.
this work seeks to establish (i) the sizedependent dissolution of hematite nanoparticles across a range of dissolution mechanisms ( protonpromoted, ligandpromoted, thermal reductive and photoreductive dissolution) and ph values, (ii) the extent to which nanoparticle aggregation effects the reactivity of hematite nanoparticles and trends .
Jan 01, 2011 · Commercially prepared hematite nanoparticles have been employed for adsorption of bivalent metals (Pb, Cu, Zn, Cd) and the results proved that nanohematite could be applicable in water treatment ...
Herein we study the effects of size, shape, and crystallinity on hematite nanoparticles to experimentally determine the most crucial variable leading to enhancing the radio frequency (RF) heating properties.
Zn is an essential micronutrient that is often limited in tropical, lateritic soils in part because it is sequestered in nominally refractory iron oxide phases. Stable phases such as goethite and hematite, however, can undergo reductive recrystallization without a phase change under circumneutral pH conditions and release metal impurities such as Zn into aqueous solutions. .
Stable phases such as goethite and hematite, however, can undergo reductive recrystallization without a phase change under circumneutral pH conditions and release metal impurities such as Zn into aqueous solutions. Further, the process appears to be driven by Fe vacancies.