Results 61 to 70 of about 1,258 (180)

Fluoride removal by adsorption on thermally treated lateritic soils

Bulletin of the Chemical Society of Ethiopia, 2012
The ability of lateritic soils to remove fluoride from water has been studied. Important issues considered in the study include the relation between the mineral composition of soils and their ability to remove fluoride, the effect of thermal treatment of
Kefyalew Gomoro, Feleke Zewge, Bernd Hundhammer, Negussie Megersa   +3 more
doaj  

GeAl2‐2xFe2xO3(OH)4 Nanotubes: New Electrocatalyst for Oxygen Evolution Reaction

Advanced Functional Materials, Volume 36, Issue 21, 12 March 2026.
Fe‐doped imogolite nanotubes are synthesized via a one‐step hydrothermal method with varying Fe substitution ratios x. Structural and spectroscopic analyses confirm homogeneous Fe incorporation while preserving tubular shape. Optimal doping at x = 0.05 enhances optical absorption, narrows band gap, reduces charge transfer resistance, and significantly ...
Yassine Naciri, Jian Li, Wahid Ullah, Fabien Baron, Franck Bourdelle, Stéphan Rouzière, Claire Goldmann, Erik Elkaim, Thomas Bizien, Rachid Belkhou, Delphine Vantelon, Mohamed Nawfal Ghazzal, Erwan Paineau   +12 more
wiley   +1 more source

Effect of gibbsite in lithomargic clay on the mechanical and physical properties of limestone calcined clay cement

International Journal of Ceramic Engineering & Science
Cement, a non‐renewable yet essential commodity in the construction industry remains the most used material despite the high CO2 emissions associated with the production.
Clement Nyarko Opoku, Anthony Andrews, Martinson Addo Nartey, Eric Kwame Asare   +3 more
doaj   +1 more source

The Direct Cold Sintering of α-Al₂O₃ Ceramics in a Pure Water Medium

Ceramics
Porous α-Al2O3 ceramics are a highly sought-after material with a multitude of applications; for example, they are used as filters, substrates, biomedicine materials, etc.
Anastasia A. Kholodkova, Maxim V. Kornyushin, Arseniy N. Khrustalev, Levko A. Arbanas, Andrey V. Smirnov, Yurii D. Ivakin   +5 more
doaj   +1 more source

Reflectância espectral e mineralogia de materiais formados sobre diabásio Spectral reflectance and mineralogy of soil materials developed from diabase

Scientia Agricola, 2000
O presente estudo teve por objetivo caracterizar diferentes fases de intemperismo de um solo e relacioná-las com seu comportamento espectral. Um perfil pedológico desenvolvido sobre diabásio da região de Capivari-SP, foi descrito morfologicamente ...
Celso Augusto Clemente, José Alexandre Melo Demattê, Álvaro Luiz Mafra, Sérgio Ricardo Portes Bentivenha   +3 more
doaj   +1 more source

A new microenvironment for the formation of clay minerals: the example of authigenic halloysite-7Å and gibbsite in a stalactite from Agios Georgios Cave, Kilkis, north Greece

International Journal of Speleology, 2015
An unusual authigenic origin for halloysite and gibbsite is reported in a stalactite from Agios Georgios Cave, Kilkis. This speleothem includes mostly pure calcite whereas minor areas of Mg-rich calcite and scarce dolomite are present in four growth ...
Elena Ifandi, University of Patras, Basilios Tsikouras, Dimitrios Papoulis, Konstantin Hatzipanagiotou, Aspasia Antonelou   +4 more
doaj   +1 more source

Formulation of calcium dialuminate (CaO·2Al2O3) refractory cement from local bauxite

Journal of Asian Ceramic Societies, 2015
Three types of bauxites containing aluminum hydroxide of 58.1% gibbsite and 19.3% boehmite for BX3, 95.5% of gibbsite for BX55 and 84.5% of gibbsite for BX8 were used with lime at 95% of CaO through solid state sintering in one stage to prepare a ...
A.B. Tchamba, J.C. Sofack, R. Yongue, U.C. Melo   +3 more
doaj   +1 more source

Validation of a Standard Operating Procedure (SOP) for Forensic Soils Investigation in Brazil

Revista Brasileira de Ciência do Solo
Soil traces are useful as forensic evidence due to their potential to transfer and adhere to different types of surfaces on a range of objects or persons. Several works have been developed in forensic soils, under different analytical approaches. However,
Samara Alves Testoni, Vander Freitas Melo, Lorna Anne Dawson, Fábio Augusto da Silva Salvador, Paulo Akira Kunii   +4 more
doaj   +1 more source

INFLUENCE OF GRAIN AND CRYSTALLITE SIZE ON THE GIBBSITE TO BOEHMITE THERMAL TRANSFORMATION

Studia Universitatis Babes-Bolyai Chemia, 2015
Thermal decomposition processes of three different samples of hydrated alumina: Bayer precipitated size fractioned, Bayer precipitated ground and fine precipitated, were studied.
Viktor Zsolt BARANYAI, Ferenc KRISTÁLY, István SZŰCS   +2 more
doaj  

Mineralogy of the clay fraction of Alfisols in two slope curvatures: III - spatial variability Mineralogia da fração argila de um Argissolo em curvaturas do relevo: III - variabilidade espacial

Revista Brasileira de Ciência do Solo, 2013
A good knowledge of the spatial distribution of clay minerals in the landscape facilitates the understanding of the influence of relief on the content and crystallographic attributes of soil minerals such as goethite, hematite, kaolinite and gibbsite ...
Livia Arantes Camargo, José Marques Júnior, Gener Tadeu Pereira   +2 more
doaj