Adsorption of ammonium ions onto the external surface of smectite: Effects of layer charge, concentration, anion and comparison with interlayer adsorption

C Peng, G Wang, X Zhu, L Qin, X Shao - Applied Clay Science, 2022 - Elsevier
The residual and release of ammonium in ion-adsorption rare earth tailings and soil are
related to the interaction of NH 4+ with clay minerals. Molecular dynamics simulations were …

Effect of layer charge and charge distribution on the formation of chitosan-smectite bionanocomposites

E Koutsopoulou, I Koutselas, GE Christidis… - Applied Clay …, 2020 - Elsevier
Chitosan-clay bionanocomposites were prepared from chitosan biopolymer solutions and
four different smectites (SAz-1 and SWy-2 montmorillonites, SBId-1 beidellite and NAu-1 …

[HTML][HTML] Preparation, Features, and Efficiency of Nanocomposite Fertilisers Based on Glauconite and Ammonium Dihydrogen Phosphate

M Rudmin, B Makarov, A López-Quirós, P Maximov… - Materials, 2023 - mdpi.com
This paper studies the chemical and mechanochemical preparation of glauconite with
ammonium dihydrogen phosphate (ADP) nanocomposites with a ratio of 9: 1 in the vol …

Effective sequestration of phosphate and ammonium ions by the bentonite/zeolite Na–P composite as a simple technique to control the eutrophication phenomenon …

MR Abukhadra, SM Ali, EA Nasr, HAA Mahmoud… - ACS …, 2020 - ACS Publications
A bentonite/Zeolite-P (BE/ZP) composite was synthesized by controlled alkaline
hydrothermal treatment of bentonite at 150° C for 4 h for effective sequestration of phosphate …

Evaluation of different forms of Egyptian diatomite for the removal of ammonium ions from Lake Qarun: a realistic study to avoid eutrophication

MR AbuKhadra, MH Eid, AA Allam, JS Ajarem… - Environmental …, 2020 - Elsevier
Three types of diatomite-based adsorbents—diatomaceous earth (DE), purified diatomite
(PD), and diatomite@ MgO/CaO (D@ MgO) were used for adsorption decontamination of …

[HTML][HTML] Preparation of modified montmorillonite and its application to rare earth adsorption

X Liu, F Zhou, R Chi, J Feng, Y Ding, Q Liu - Minerals, 2019 - mdpi.com
Montmorillonite, the major clay mineral in the tailings of weathered crust elution-deposited
rare earth ores, was modified as an excellent adsorbent to enrich rare earth ions from …

[HTML][HTML] Removal of ammonium ions from aqueous solutions using alkali-activated analcime as sorbent

H Runtti, E Sundhararasu, J Pesonen, S Tuomikoski… - ChemEngineering, 2023 - mdpi.com
Five alkali-activated analcime (ANA) sorbents (ANA-MK 1, ANA 2, ANA 3, ANA-MK 4, and
ANA-MK 5) were developed for ammonium (NH4+) ion removal. Acid treatment and …

Effective removal of ammonium nitrogen using titanate adsorbent: Capacity evaluation focusing on cation exchange

W Zhang, Z Wang, Y Liu, J Feng, J Han… - Science of The Total …, 2021 - Elsevier
Cation exchange is one of the dominant mechanisms in the adsorption of cationic
ammonium nitrogen (NH 4+) from water. In this study, we focus on the role of counter cations …

Modified tailings of weathered crust elution-deposited rare earth ores as adsorbents for recovery of rare earth ions from solutions: Kinetics and thermodynamics …

F Zhou, YX Zhang, Q Liu, S Huang, X Wu, Z Wang… - Minerals …, 2023 - Elsevier
Weathered crust elution-deposited rare earth ores tailings are mainly composed of clay
minerals, which can be used as efficient adsorption materials. In order to explore the …

Effective and environmental retention of some radioactive elements (U (VI), Sr (II), and Ba (II)) within bentonite/zeolite hybrid structure; equilibrium and realistic study

MR Abukhadra, SM Ali, AM El-Sherbeeny… - Inorganic Chemistry …, 2020 - Elsevier
Bentonite/zeolite hybrid structure was synthesized as adsorbent material for promising
retention of U (VI), Sr (II), and Ba (II) as toxic radionuclides in water. The retention of U (VI) …