Results 11 to 20 of about 14,521 (250)

In situ ATR‐FTIR spectroscopic study of metformin adsorption on gibbsite and Loring silt loam

Agricultural & Environmental Letters
Metformin is an anti‐diabetic drug that has received increased environmental attention due to probable toxic effects on aquatic ecosystems. Although several studies reported metformin adsorption on soils and minerals, spectroscopic evidence of adsorption
Maheen Mehnaz, Sudipta Rakshit, Michael E. Essington, Ali Taheri   +3 more
doaj   +2 more sources

Application of Chemometric Methods in X-Ray Diffraction Data on Arabica Coffee Management Soils in Brazil. [PDF]

Anal Sci Adv
ABSTRACT Soil mineralogy, analysed by x‐ray diffraction (XRD), is crucial to understanding its variability and influence on physical and chemical properties. However, soil analysis by XRD faces challenges, especially with large sample volumes and subjective interpretation.
da Silva RV, Lyrio MVV, Frinhani RQ, Pereira LL, Filgueiras PR, Ribeiro MA.   +5 more
europepmc   +2 more sources

Chemical and mineralogical characteristics of tropical soils on the transport of Na⁺, K⁺, Ca²⁺, and Mg²⁺ from the application of treated wastewater. [PDF]

J Environ Qual
Abstract With the search for water security, the reuse of water in irrigation becomes interesting and inevitable. Given the complexity of soil–solute interactions, the use of simplified artificial solutions represents an innovative approach, as it facilitates understanding these interactions while posing no risk to human health or the environment ...
Merlo MN, Thebaldi MS, Alvarez MAC, de Jesus DC, Dos S Soares J, Lima EMC, da Silva MA, Lima LA, de Oliveira LFC.   +8 more
europepmc   +2 more sources

Processing of Low-Quality Gibbsite-Kaolinite Bauxites

Metals, 2022
The results of studies on the processing of gibbsite-kaolinite bauxite are presented. The developed technology includes preliminary chemical activation and thermal transformation during enrichment to obtain a concentrate suitable for processing by the ...
Symbat Dyussenova, Rinat Abdulvaliyev, Ata Akcil, Sergey Gladyshev, Galiya Ruzakhunova   +4 more
doaj   +1 more source

Acid and Acid-Alkali Treatment Methods of Al-Chloride Solution Obtained by the Leaching of Coal Fly Ash to Produce Sandy Grade Alumina

Metals, 2020
Sandy grade alumina is a valuable intermediate material that is mainly produced by the Bayer process and used for manufacturing primary metallic aluminum.
Dmitry Valeev, Andrei Shoppert, Alexandra Mikhailova, Alex Kondratiev   +3 more
doaj   +1 more source

Behavior of sodium oxalate in seeded precipitation process of sodium aluminate solution

工程科学学报, 2018
Sodium oxalate has negative effects on alumina produced by the Bayer process. The behavior of sodium oxalate in the seeded precipitation process of a sodium aluminate solution was investigated. The particle size and morphology of crystallization, as well
FAN Shang, CHEN Wen-mi, LIANG Gao-jie
doaj   +1 more source

Adsorption of Phosphate Ion in Water with Lithium-Intercalated Gibbsite

Makara Journal of Science, 2015
In order to enhance adsorption capacity of gibbsite (Al(OH)3 as an adsorbent for the adsorption of phosphate in water, gibbsite was modified through lithium-intercalation.
Riwandi Sihombing, Yuni Krisyuningsih Krisnandi, Rahma Widya, Siti Zahrotul Luthfiyah, Rika Tri Yunarti   +4 more
doaj   +1 more source

The main types and mineral composition of bauxites of the Kursk Magnetic Anomaly

Учёные записки Казанского университета: Серия Естественные науки, 2020
The bauxite-bearing Paleozoic weathering crust of the Kursk Magnetic Anomaly (KMA) is developed along the inter-ore schists of the ferruginous-siliceous formation of the Kursk series.
A.D. Savko, M.Yu. Ovchinnikova
doaj   +1 more source

Solid-state NMR characterisation of the thermal transformation of a Hungarian white illite [PDF]

, 2005
1H, 27Al, 29Si and 39K solid-state NMR are reported from a Hungarian illite 2:1 clay for samples heated up 1600 °C. This single-phase sample has a small amount of aluminium substitution in the silica layer and very low iron-content (0.4 wt%).
Ban, Bastow, Brindley, Brindley, Brown, Brown, D.L. Carroll, Deer, Drachman, Drits, Earnest, Engelhardt, Fitzgerald, Fitzgerald, Freude, Grim, Grim, Hayashi, He, Herrero, Jaymes, Jaymes, Kunath-Fandrei, Kunath-Fandrei, Kunwar, Lambert, Lambert, Lausen, M.E. Smith, MacKenzie, Mackenzie, Mackenzie, Massiot, Massiot, McConville, Merwin, Michael, Murad, Rehak, Roch, Rocha, Rocha, Sanchez-Soto, Sanz, Sanz, Schairer, Schroeder, Slade, Smith, Smith, Smith, Smith, T.F. Kemp, T.J. Bastow, Watanabe, Woessner, Worrall   +56 more
core   +1 more source

Granulometric Separation of Bauxite Tailings to Metallurgical Processing [PDF]

Materials Research
The beneficiation of bauxite ore generates significant quantities of tailings, primarily composed of kaolinite and residual gibbsite, the latter still amenable to metallurgical recovery.
Elaine Cristina Lima de Melo, Oscar Jesus Choque Fernandez, Murilo Ponciano Emim, Bruno Apolo Miranda Figueira, Nayara Aparecida Fonseca Couto   +4 more
doaj   +1 more source