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- An overview of the role of goethite surfaces in the environment
Goethite (α-FeOOH) is a widespread soil mineral and a major component of many ores, sediments and soils and it is one of the most thermodynamically stable iron oxide (Cornell and Schwertmann, 2003) Goethite can be found in both humid and semiarid regions and also appears as the weathering product of various iron-containing rocks (Kemp, 1985)
- Goethite - an overview | ScienceDirect Topics
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 - an overview | ScienceDirect Topics
Goethite and hematite are encountered either in the kaolinite matrix, or as segregations (coating of grains, cement and concretions) Goethite is found where large pores, while hematite forms in micro-pores As hematite replaces kaolinite, concretions can form and are thus generally made of pure hematite (Herbillon and Nahon, 1988) As a
- Synthesis, characterization and application of goethite mineral as an . . .
BET surface area of goethite was found to be 72 m 2 g −1 BJH adsorption desorption surface area, and the single point total pore volume of the adsorbent were found to be 12 7 9 64 m 2 g −1 and 0 0287 cm 3 g −1 respectively These characteristics indicate that goethite is a superior adsorbent for the removal of Cu and Cd from aqueous
- Enhanced conversion mechanism of Al-goethite in . . . - ScienceDirect
Trans Nonferrous Met Soc China 32(2022) 3077−3087 Enhanced conversion mechanism of Al-goethite in gibbsitic bauxite under reductive Bayer digestion process Guo-tao ZHOU, Yi-lin WANG, Tian-gui QI, Qiu-sheng ZHOU, Gui-hua LIU, Zhi-hong PENG, Xiao-bin LI School of Metallurgy and Environment, Central South University, Changsha 410083, China Received 9 August 2021; accepted 31 December
- Scandium immobilization by goethite: Surface adsorption versus . . .
Goethite recrystallization has been proposed as a fundamental geochemical process affecting the cycling of various trace elements (e g , Catalano et al , 2011, Frierdich et al , 2011, Frierdich et al , 2019a, Hinkle and Catalano, 2015, Burton et al , 2020), although this process occurs slowly under oxidizing conditions where the solubility of goethite is low
- The effect of goethite aging on Cd adsorption: Constraints of mineral . . .
When goethite was pre-aged at pH 7 5 (Fig 1 a), the amount of Cd adsorbed decreased as the aging time extended The total Cd load on goethite that was pre-aged for 0 days (Goe-0) was 2 51 ± 0 14 μmol g, while the total Cd load on goethite that was pre-aged for 30 days (Goe-30) decreased to 1 34 ± 0 11 μmol g
- Surface complexation modeling: Goethite - ScienceDirect
The surface complexation constants for goethite and hydrous ferric oxide in Table 9, Table 10 show remarkable consistency This consistency may be seen graphically by plotting the goethite and hydrous ferric oxide surface complexation constants together on the LFER plots presented previously (shown in Ref 24) The consistency of the surface
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