Showing papers in "Applied Clay Science in 2017"

TL;DR: In this paper, the authors reviewed the recent applications of LDH-containing hybrids as adsorbents for water remediation and reported the maximum adsorption capacities of various toxic heavy metals and dyes on different LDH hybrids.

TL;DR: In this article, the NH4+ adsorption behavior followed the pseudo-second-order kinetic model for six natural clay minerals (NCM) evaluated for the effectiveness of NH4+, and the results showed that the NCM have significant potential as economic, safe and effective adsorbent materials for NH4 + adsorbing from the aqueous solution.

TL;DR: An overview of the use of the clay/TiO2 nanocomposite photocatalysts for removal of organic contaminants from water, report on the recent work done and important applications.

TL;DR: In this article, a cross-linked activated organo-bentonite (AOBent)/sodium alginate (SA) composite was prepared by the intercalation of sodium alginates in activated organobentonite and the cross-linking reaction between sodium and chlorhydric acid to produce interesting new low cost material for the removal of cationic and anionic dyes (methylene blue (MB) and methyl orange (MO)) from aqueous solutions.

TL;DR: In this article, the structure of halloysite nanotubes (Hal) from different mines was investigated by Small-Angle Neutron Scattering (SANS) and Electric Birefringence (EBR) experiments.

TL;DR: In this article, the effect of the microstructures of the above-mentioned clay minerals on benzene adsorption were explored by comparing the benzene adaption of the different derivates of these clay minerals, which were obtained by adjusting the interlayer space and the porosity of the clay minerals through heating treatment.

TL;DR: In this article, the performance of metakaolin based geopolymer (MKG) was investigated as an adsorbent to remove Zn(II) and Ni(II)- ions from aqueous solution.

TL;DR: In this article, the influence of inclusion of waste rubber tire fibres on some of the geotechnical properties of uncemented/cemented clay was investigated and the results revealed that the incorporation of rubber fibre reduces the unconfined compressive strength and split tensile strength of cement-stabilized clay but prosperously improves the rate of loss of post-peak strength and change the brittle failure behavior of cemented clay to ductile.

TL;DR: In this paper, the adsorption of Pb 2+, Cu 2+ and Cd 2+ by the nanocomposite of chitosan saturated montmorillonte was investigated.

TL;DR: In this article, heavy metal ions were proposed to form coordination bonds between the nonbridging Si O − and Al O − of GP framework (crosslinkers) leading to more effective stabilization of total ions in the GP matrix.

TL;DR: In this paper, a study was performed on the removal of representative cationic and anionic dyes, methylene blue and metanil yellow, from aqueous solutions using fibrous clay minerals grafted with amine groups using 3-aminopropyl triethoxysilane as functionalizing agent.

TL;DR: In this article, the use of layered double hydroxides (LDH) materials with different morphologies as adsorbents for Methyl Orange (MO) removal from aqueous solution was discussed.

TL;DR: In this paper, the authors used halloysite nanotubes for the immobilization of α-amylase post their surface functionalization with APTES and characterized the ultrastructure and morphology using TEM.

TL;DR: In this paper, the adsorption of textile azo dye Acid Yellow 42 (AY) onto calcined and uncalcined Mg-Al-CO 3 -LDH was investigated.

TL;DR: In this article, the effects of fly ash (FA), blast furnace slag (BFS) and metakaolin (MK) on the mechanical properties, drying shrinkage, carbonation and chloride permeability of coral sand concretes were compared.

TL;DR: In this article, the compressive strength of metakaolin-based geopolymer cements was compared to the one of alkali-based cements using a dilution of commercial phosphoric acid in distilled water.

TL;DR: In this article, the use of CKD and fly ash to improve the unconfined compressive strength (UCS) of soft Bangkok clay compared with ordinary Portland cement (OPC) was presented.

TL;DR: In this article, the effect of fiber content and fiber length on desiccation cracking of fiber reinforced clays was quantitatively evaluated and compared with those of unreinforced and fiber-reinforced clays.

TL;DR: In this paper, the performance of two hybrid type geopolymer mortars composed of alkaline-activated fly ash (FA) and metakaolin (MK) was evaluated against chloride-induced corrosion in reinforced concrete.

TL;DR: In this paper, the influence of a water-soluble ionic liquid on the rheological and filtration properties of water-based drilling fluids at high temperature is investigated.

TL;DR: In this article, the results were analyzed according to the Langmuir and Freundlich isotherm equations and the results showed that Mg-modified bentonite was an excellent adsorbent for effective phosphate removal from water.

TL;DR: In this paper, the reactivity of iron-rich aluminosilicates with disordered structure (laterites) due to the corrosion of kaolinite by iron minerals were investigated as solid precursors for geopolymerization.

TL;DR: In this paper, organic montmorillonite (Mt) intercalation cobalt compounds (Co-OMt) were prepared and modified by acidified chitosan to further expand the interlayer spacing of Mt.

TL;DR: In this paper, the application of LDH as the heterogeneous catalysts by adopting reconstitution phenomenon and supporting on appropriate carrier were reviewed aiming at their commercial uses, where the surface of the LDH-derived mixed oxide was rehydrated or reconstituted as well as decorated with various metals and anions, resulting in an enhanced catalytic activity and selectivity via base sites activation and high dispersion of active metal species.

TL;DR: In this article, emerging montmorillonite/stearic acid (Mt/SA) microcapsules containing SA core with Mt shell were designed and prepared via self-assembly of Mt in the SA emulsion.

TL;DR: In this paper, six different phosphoric acid solutions with molar concentrations 4, 6, 8, 10, 12 and 14 M were used for producing metakaolin-phosphate-based geopolymer cements.

TL;DR: In this paper, halloysite (Hal) nanotubes were surface modified with 3-aminopropyltriethoxysilane (APTES) to enhance the surface interaction of Hal nanoprocessors with polylactide or poly (lactic acid) (PLA) and to achieve good dispersion of Hal nano-connections across the PLA matrix.

TL;DR: In this paper, the adsorption of reactive dyes, Remazol Violet 5R (RV5R) and Acid Blue 25 (AB25), using Porous Clay Heterostructures (PCHs) prepared from natural bentonite.

TL;DR: A series of composite phase change materials (PCMs) were prepared by impregnating lauric acid (LA) into the chemically modified sepiolite (SEP) via a vacuum impregnation method.

TL;DR: In this paper, coal-series kaolin (CCK) was used as a potential pozzolanic material to be used in the cement and concrete industry, and two direct methods, modified Chapelle and Frattini tests, and one indirect method, strength activity index, were evaluated.