Results 51 to 60 of about 17,623 (218)
Magnetic and spectral signatures of Cerrado soils in the state of Goiás, Brazil [PDF]
Pesquisa Agropecuária Brasileira, 2017 : The objective of this work was to estimate the iron oxide contents (hematite and goethite) and to characterize the color and the spectral and magnetic signatures of Cerrado soils in the state of Goiás, Brazil.
Kathleen Lourenço Fernandes +4 more
doaj +1 more source
Kinetics of phosphorus sorption by goethite and kaolinite‐goethite (k‐g) system
Communications in Soil Science and Plant Analysis, 1998 Abstract Reactions between phosphate (PO4) and soils or soil components is quick at first. It then becomes slower and continues for long time without reaching any true equilibrium. Many kinetic equations have been used either to deduce the mechanisms or simply to summarise results of this continued removal of PO4 from solution.
Papadopoulos, P. +2 more
openaire +2 more sources
Advanced Science, EarlyView.Hydrogen‐driven iron oxide reduction, water‐iron corrosion, and hydrogen embrittlement of metallic iron share the same Fe‐O‐H chemistry. A general‐purpose Atomic Cluster Expansion potential covers this chemistry across the full concentration range with explicit Ising‐like treatment of magnetism.
Baptiste Bienvenu +5 more
wiley +1 more source
The relationship between the molecular structure and ion adsorption on goethite [PDF]
, 2001 Keywords:Ion adsorption modeling, goethite, iron oxide, CD-MUSIC, phosphate, arsenate, vanadate, molybdate, tungstate, sulfate, selenate.A study is presented on the adsorption of inorganic ions on goethite with emphasis on the adsorption of oxyanions ...
Rietra, R.P.J.J.
core
, 2002 Fourier transform infrared microscopy has been used to investigate in situ dehydroxylation of goethite to form hematite. The characterisation was based on the behaviour of hydroxyl units, which were observed in the hydroxyl stretching and hydroxyl ...
Frost, R. L. +7 more
core +1 more source
Journal of Applied Polymer Science, EarlyView.Magnetic biocatalysts can be recovered from high‐viscosity reaction media, such as those used in esterification, via magnetic attraction, thereby streamlining the bioprocess and reducing costs. This work builds on prior studies by providing additional data on how particle morphology influences immobilization parameters and by further exploring ...
Sabrina S. Teixeira +7 more
wiley +1 more source
Modeling the adsorption of weak organic acids on goethite : the ligand and charge distribution model [PDF]
, 2001 A detailed study is presented in which the CD-MUSIC modeling approach is used in a new modeling approach that can describe the binding of large organic molecules by metal (hydr)oxides taking the full speciation of the adsorbed molecule into account ...
Filius, J.D.
core
Adsorption Science & Technology, 2010 Batch experiments were conducted to study the effect of small organic acids (citric, oxalic and acetic) on the removal of phosphate anions from aqueous systems using synthesized goethite as the adsorbent.
Zhongliang Shi, Fang Li, Shuhua Yao
doaj +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Bimetallic Cu and Fe oxide species supported on porous silica with interparticle mesoporosity act as efficient photo‐Fenton‐like catalysts under visible light. Photogenerated electrons drive the Cu2+/Cu1+ redox cycle. Part of Cu1+ is responsible for the regeneration of the Fe3+/Fe2+ cycle at neutral pH. Light irradiation additionally induces structural
Andraž Šuligoj +6 more
wiley +1 more source