安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- An overview of the role of goethite surfaces in the environment
Goethite, one of the most thermodynamically stable iron oxides, has been extensively researched especially the structure (including surface structure), the adsorption capacity to anions, organic organic acid (especially for the soil organic carbon) and cations in the natural environment and its potential application in environmental protection
- Goethite - an overview | ScienceDirect Topics
d Goethite (α -FeOOH) Goethite is the most common of the iron oxyhydroxides and is antiferromagnetic with a disordering (Néel) temperature of about 120°C (Hedley, 1971) Goethite has weak saturation magnetization and very high coercivity (Hedley, 1971; Rochette and Fillion, 1989) It dehydrates to hematite at about 300°C Goethite is an important product in low-temperature oxidation
- Goethite - an overview | ScienceDirect Topics
Goethite (α -FeOOH) Due to its high stability, goethite is the most ubiquitous Fe oxide mineral in soils In the absence of hematite, its yellowish color is responsible for the yellowish-brown hue of many soils (7 4 YR–3 5 Y) Goethite formation is favored by slow hydrolysis of Fe 3+ hydroxy cations at low temperature The even distribution of goethite in a soil horizon indicates therefore
- Synthesis, characterization and application of goethite mineral as an . . .
Goethite, one of the most important iron oxy-hydroxide, having double bonds, possesses the capability of incorporating a range of environmentally important oxy-anions and cations in its complex matrix Hence, it can be used as an adsorbent Forbes et al [21] synthesized goethite to study adsorption of Cd, Co, Cu, Pb and Zn
- The effect of goethite aging on Cd adsorption: Constraints of mineral . . .
After the incubation, the goethite precipitate was separated by centrifugation and washed with ultrapure water to remove the electrolyte until the conductivity of the suspension was less than 10 μS cm The washed yellow goethite was then freeze-dried to remove moisture, and stored after passing through a 100-mesh sieve (referred as Goe-0)
- Enhanced conversion mechanism of Al-goethite in . . . - ScienceDirect
The conversion mechanism of Al-goethite under the action of different additives (lime or reductant for typical or reductive Bayer digestion) was inves…
- Scandium immobilization by goethite: Surface adsorption versus . . .
Thus, the adsorption and incorporation processes of Sc by goethite could play critical roles in the control of speciation and distribution of Sc in the environment However, the mechanisms of Sc immobilization by goethite and controlling factors remain unclear
- Surface complexation modeling: Goethite - ScienceDirect
The objective of the work described in this chapter was to increase the scope of the existing sorption database to include surface complexation constants for goethite (α-FeOOH) Goethite is the most common crystalline iron oxide found in soils, as it is thermodynamically stable under a wide range of soil conditions [1]
|
|
|