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 Goethite (α-FeOOH) is defined as a stable iron oxide mineral commonly found in soils, contributing to their yellowish-brown hue and forming under aerated, temperate, humid conditions through the slow hydrolysis of Fe3+ hydroxy cations Its crystal structure consists of double chains of edge-shared octahedra linked by hydrogen bonds AI generated definition based on: Encyclopedia of Soils in
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
Microbe-mineral interactions control fluoride mobilization from . . . The F-bearing goethite was prepared with sufficient mineral-associated F − to explore mobilization and re-immobilization kinetics in the microcosm experiments Given the strongly alkaline conditions in synthesis, Al-F phase formation was unlikely and F − had been retained mainly by the goethite host
Competitive adsorption of arsenic, phosphate and humic substances onto . . . Results demonstrate that the NOM-CD model is a reliable tool for elucidating the underlying interaction mechanisms of HS, arsenic and phosphate onto goethite Both HA and FA exhibit a considerable impact on the competitive interactions between arsenite, arsenate, and phosphate at the goethite-water interface, particularly under acidic conditions
The behavior of NOM-Cu(Ⅱ)colloids at the goethite interface Instead, the aggregation and deposition of colloids induced by goethite promote Cu (II) adsorption At high C Cu (II) ratio, the suppression of Cu (II) adsorption was attributed to the formation of a dense adsorption layer by free HA, which coordinated with goethite surfaces via carboxyl groups, occupying adsorption sites
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)
Molecular transformation and photochemical reactivity of microplastic . . . Goethite, a common iron oxyhydroxide in aquatic systems, features numerous reactive surface sites capable of DOM interactions (Fendorf et al 1997; Parfitt and Atkinson 1976) Numerous studies have demonstrated that the interaction between goethite and natural organic matter (NOM) is a key process in mediating the mobility, transformation, and stabilization of both organic and inorganic
Towards building a unified adsorption model for goethite based on . . . The results of this work contribute to progressively build a unified model that describes the geochemical behavior of goethite towards adsorption of species of environmental interest This endeavor may eventually be of aide to describe more complex systems and the interactions occurring among different component species as related to the presence of goethite
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]