Results 31 to 40 of about 415 (134)

Water partitioning and migration in unsaturated bentonites by low‐field NMR characterization

Vadose Zone Journal, 2023
Water behavior in bentonite clay pores is influenced by soil–water interaction mechanisms such as capillary and adsorptive forces. Quantitative measurement of these water statuses remains challenging, leading to the adoption of advanced techniques.
Ling Peng, Fan Zhang, Yi Dong, Chi Zhang
doaj   +1 more source

Nanoclay‐Engineered Scaffolds for the Controlled Delivery of Biomolecules in Regenerative Medicine

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Regenerative medicine combines biomaterials, cells, scaffolds, and bioactive agents via modern technologies to aid in the reconstruction and repair of damaged tissues. Among these, nanoclay scaffolds have demonstrated unique advantages in facilitating the delivery of therapeutic agents.
Mehri Shadi, Saeed Vafaei‐Nezhad, Ahmad Gholamalizadeh Ahangar   +2 more
wiley   +1 more source

Combined use of kaolin and bentonite molding clays

Литьë и металлургия
The article compares the properties of kaolin and bentonite clays. It has been shown that kaolin clays have high fire resistance, and bentonites have high astringent properties.
S. A. Kulikov, F. I. Rudnickij, V. A. Shumigaj   +2 more
doaj   +1 more source

Enhanced Rheological and Filtration Performance of Drilling Fluids Using Fe3O4/Saponin/Cu(II) Nanocomposites: Synthesis, Characterization, and Application

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Drilling fluids used in high‐performance well operations often struggle to maintain rheological stability, colloidal dispersion, and filtration control under harsh downhole conditions. This study engineered a multifunctional Fe3O4@Saponin/Cu(II) nanocomposite to address these challenges.
Kassem Al Attabi, Farag M. A. Altalbawy, Hana Ihsan Hassan, Ahmed Salih Sahib, Zahraa Saad Abdulali, Mariem Alwan, Mahmood Jawad, Hiba Mushtaq, Aseel Smerat, Fatimah Pashtun   +9 more
wiley   +1 more source

Bentonites from Boa Vista, Brazil: physical, mineralogical and rheological properties

Materials Research, 2004
The aim of this work is to characterize physically and mineralogically six samples of natural and industrialized bentonites from Paraíba, Brazil, and to study its rheological properties to be used as a components of water based drilling fluids.
Luciana Viana Amorim, Cynthia Morais Gomes, Helio de Lucena Lira, Kepler Borges França, Heber Carlos Ferreira   +4 more
doaj   +1 more source

Mechanical Strength of Silicon Carbide Bonded with Iraqi Clays [PDF]

Engineering and Technology Journal, 2011
Two types of Iraqi clays (Kaolin and Bentonite) were used in bonding process with different weight percentage (5%, 10%, 15%, 20%, and 25%) and with different particle size from clays and silicon carbide.
Abdul Mutalb Al Sheikh, Shihab Ahmed Zaidan Al- Juboori, Kassim S. Kassim   +2 more
doaj   +1 more source

Anaerobic Corrosion Phenomena of Cast Iron and Copper in Artificial Groundwater at Elevated Temperature

Materials and Corrosion, EarlyView.
This study examines corrosion of copper and cast iron as candidate canister materials for high‐level radioactive waste disposal in contact with bentonite suspension. The influence of three electrolyte compositions on corrosion behavior under repository‐relevant conditions is assessed.
Louisa Panjiyar, Martin Ende, Christiane Stephan‐Scherb   +2 more
wiley   +1 more source

Study on the Improvement Performance of Different Clay Components with Desulfurization Gypsum-Containing Cementitious Material

Buildings
The use of cementitious materials to improve clay is a common technique in engineering. However, the effectiveness of these materials, particularly desulfurized gypsum, on clays with different mineral compositions remains unclear, resulting in a lack of ...
Tingzhu Chen, Xin Dong, Hongxu Chen, Feng Zhou, Gang Liu, Wei Chang, Rui Zhu   +6 more
doaj   +1 more source

Three Locally Clays as A Surfaces for Adsorption of Cephalexin Monohydrate From Aqueous Solution: Thermodynamic and Desorption Equilibrium

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2018
    The  adsorption of cephalexin.H2O from aqueous solution on attapulgite, bentonite and kaolin has been studied at the human body temperature (37.5ËšC) and at 5, 27, 47ËšC in 0.1M hydrochloric acid (pH 1.2).
Saja S. Al-Taweel, Sadoon A. Isa, Ramzi R. Al-Ani   +2 more
doaj   +1 more source

Influence of the additivation process on cation exchange capacity and viscosity of bentonitic clay dispersions [PDF]

Cerâmica, 2019
In Brazil, bentonite clays are not naturally sodic and it is an industrial practice the sodium additivation, since sodium ion expands their lamellae allowing a larger amount of water to penetrate. The objective was to analyze the influences of the use of
I. C. G. Morais, I. A. Silva, B. M. A. B. Buriti, J. V. Fernandes, D. S. Silva, G. A. Neves, H. S. Ferreira   +6 more
doaj   +1 more source