Results 41 to 50 of about 17,623 (218)

Phosphate adsorption on goethite and Al-rich goethite

open access: yesComputational Materials Science, 2014
Abstract The adsorption of phosphate complexes on pure and Al-rich goethite surfaces was studied by using density functional theory (DFT) and a periodic slab model. Several phosphate complexes are evaluated on these surfaces, which were not studied in other earlier theoretical works.
Belelli, Patricia Gabriela   +2 more
openaire   +2 more sources

Atomic scale study of thermal reduction of nano goethite coexisting with magnetite

open access: yesAIP Advances, 2013
Evolution of the local structure and magnetic properties of nano particles of goethite having magnetite as a composite due to controlled annealing treatments in vacuum has been studied using Mossbauer spectroscopy.
L. Herojit singh   +4 more
doaj   +1 more source

Unravelling the nature of glyphosate binding to goethite surfaces by ab initio molecular dynamics simulations [PDF]

open access: yes, 2017
Simulation results are presented which quantify the binding energy of glyphosate to different goethite surfaces. Further the effect of water and pH is addressed.
P. Leinweber   +5 more
core   +1 more source

Phosphate Adsorption from Aqueous Solutions onto Goethite, Bentonite, and Bentonite-Goethite System

open access: yes, 2013
The present paper examines the phosphate adsorption from aqueous solutions onto goethite, bentonite, and bentonite-goethite system. The properties of the materials were studied by X-ray diffraction (XRD), attenuated total reflectance (ATR), and NMR ...
Ioannou, Z., Dimirkou, A., Ioannou, A.
core   +3 more sources

Mineralogy of the clay fraction of alfisols in two slope curvatures: IV - spatial correlation with physical properties

open access: yesRevista Brasileira de Ciência do Solo, 2013
Although the influence of clay mineralogy on soil physical properties has been widely studied, spatial relationships between these features in Alfisols have rarely been examined.
Livia Arantes Camargo   +2 more
doaj   +1 more source

Effect of aging time and Al substitution on the morphology of aluminous goethite [PDF]

open access: yes, 2012
Goethite and Al-substituted goethite were synthesized from the reaction between ferric nitrate and/or aluminum nitrate and potassium hydroxide. XRF, XRD, TEM with EDS were used to characterize the chemical composition, phase and lattice parameters, and ...
Chang, Dongyin   +5 more
core   +1 more source

Influencing factors and environmental effects of interactions between goethite and organic matter: A critical review

open access: yesFrontiers in Environmental Science, 2022
This paper reviews progresses in the interactions between goethite and organic matter (OM) and their environmental effects in recent decades. The interactions mainly include the effect of organic matter on the surface properties and the crystallization ...
Shuqi Yi   +4 more
doaj   +1 more source

Enhancement in the Oxidative Stability of Commercial Gasoline Fuel by the Goethite Nanoparticles [PDF]

open access: yes, 2019
It is well-established that traces of the transition metals strongly accelerate the gasoline oxidation significantly decreasing the gasoline storage time. This paper explores the opposite effect of the goethite nanoparticles on the oxidative stability of
Tetyana, Kameneva   +4 more
core   +1 more source

Comparative dissolution of natural goethite samples in HCl and HNO3

open access: yesJournal of Applied Sciences and Environmental Management, 2009
The dissolution of goethite samples in mineral acids from to extreme parts of Nigeria (Osogbo and Kaduna) have been investigated. The rate of dissolution was found to be slightly faster in HCl than HNO3.
N Abdu-Salam, FA Adekola
doaj   +1 more source

DESORPTION OF PHOSPHATE FROM GOETHITE [PDF]

open access: yesJournal of Soil Science, 1979
Summary The reversibility of the adsorption of phosphate on goethite was measured by diluting suspensions of goethite on which phosphate was adsorbed with large volumes of phosphate‐free solution at the same ionic strength. The effect on the reversibility of various adsorption and desorption conditions was studied, particularly pH ...
Madrid, Luis, Posner, M.
openaire   +2 more sources

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