Showing papers in "Applied Clay Science in 2016"

TL;DR: In this article, a general overview of the microstructure, adsorptive characteristics, and environmental applications of the Mt-based adsorbents is given, which can be used for the adsorption of most of the chemical contaminants from aqueous solution.

TL;DR: In this paper, a Fe3O4/activated montmorillonite nanocomposite was prepared by a coprecipitation method and the adsorption capacity of the nanocomposition was evaluated.

TL;DR: Halloysite nanotubes have been used as ideal templates for conveniently immobilizing nanoparticles, which could enable the construction of designed nano-architectures that are extremely attractive as supports for heterogeneous catalysts and for use in the fuel cells and related technologies that exploited the inherent "smallness" and hollow characteristics of the nanoparticles as discussed by the authors.

TL;DR: In this article, the authors investigated the carbon footprint of CCR and fly ash-based marine clay and found that CCR is an industrial byproduct obtained from acetylene gas production, high in Ca(OH)2 and was used as a green additive to improve strength of the FA based geopolymer binder.

TL;DR: A review of recent literature shows that interest in these materials remains widespread, with several new developments of environmental relevance and in the area of clay-polymer nanocomposites as mentioned in this paper.

TL;DR: In this article, the authors present an overview on the progress of the geopolymer research and development in China in the last 25 years, and discuss the latest experimental results of efflorescence and phase transformation as two key issues regarding to the application of metakaolin-based geopolymers.

TL;DR: In this article, the effect of clinoptilolite, a natural zeolite as filler, on the mechanical performance and heavy metal's adsorption capacity of the metakaolin-based geopolymers was investigated.

TL;DR: In this paper, the performance of B-Mg(OH)2 composite to remove dyes was examined at different initial concentrations, pH, temperature and ionic strengths, and the results showed that the process was physiosorptive, endothermic and spontaneous.

TL;DR: In this article, a review of the recent advances in the preparation and intercalation of layered double hydroxides by mechanochemical approaches is presented. But, although conventional solution methods for the syntheses of LDH were widely studied, several problems remain to be resolved, such as treatment of aqueous waste, high energy consumption, complex operation etc.

TL;DR: In this paper, a metakaolin-based geopolymer was applied to remove ammonium (NH 4 + ) from model solutions and landfill leachate, achieving an NH 4 + removal capacity of 21.07mgg − 1 which was 46% higher than the capacity of the reference clinoptilolite-heulandite zeolite.

TL;DR: In this article, eight reference clay samples, 4 kaolinitic, 3 smectitic and 1 illitic clay, were purified and thermally treated in order to determine their pozzolanic reactivity in cementitious materials.

TL;DR: In this article, a water/oil microemulsion of halloysite (Hal) nanotubes was used to prepare the porous microspheres Hal-chitosan (Hal-CTS) and Asp as a model drug to investigate the drug release behavior.

TL;DR: In this paper, the authors evaluated tetracycline adsorption behavior by using Fe-Mt as a model adsorbent and found that the results showed that the positive effect of anions on the TC adaption was highly influenced by the pH as well as the types and concentrations of background electrolytes.

TL;DR: In this paper, the scattered information on the dispersion of crystal bundles or aggregates of natural Pal for application in nanocomposites was organized, and the high pressure homogenization technology and integration disaggregation process proposed by the groups were especially introduced.

TL;DR: In this paper, the authors investigated the potential use and effectiveness of expansive clay stabilization using a mixture of cement and silica fume (CSF) as a possibly useful option from environmental, economic, and (or) technical perspectives.

TL;DR: In this paper, high effective clay adsorbents of Mg-Al layered double hydroxides modified palygorskite were obtained by the in situ hydrothermal crystallization method.

TL;DR: In this article, the adsorption of hexavalent chromium, Cr(VI) onto various montmorillonite (Mt) nanocomposite adsorbents was investigated.

TL;DR: In this article, a review of recent preparation strategies, properties and applications of magnetic nanoparticles/clay mineral (MNP/CM) nanocomposites is presented, which is organized into five sections.

TL;DR: In this paper, the inhibition property of polyethyleneimine (PEI) in drilling fluid was evaluated by linear swell test and roll recovery, and the results showed that the larger molecular weight of PEI leads to worse water solubility.

TL;DR: In this article, the acid-activated kaolinite (AAK) was investigated using methylene blue (MB) as a typical pollutant and the results showed that the AAK showed higher removal efficiency for MB than for original Kaolinite, with a maximum adsorption capacity of 101.5 µm2 µg−1.

TL;DR: In this article, the photocatalytic decolorization of methylene blue (MB) was performed using [Zn-Al] layered double hydroxides (LDH) either as such or calcined.

TL;DR: In this paper, the effects of applied methods on the chemical, structural and morphological changes that occurred in the kaolin, and their influence on the pozzolanic activity were investigated.

TL;DR: In the present review, various drug–clay nanohybrids will be introduced, and their recent development will be highlighted in the viewpoint of oral administration drugs with controlled and sustained release.

TL;DR: In this article, the effect of the pH on the adsorption of As for the 5 clays indicated that the arsenic was most favorable in the acidic pH range for R-clays, A-clay, and E-Clay.

TL;DR: In this article, a set of complementary techniques such as X-ray diffraction, transmission and scanning electron microscopy, Fourier transform infrared and Raman spectroscopy were used to develop synthetic magnetite nanoparticles (nFe3O4) with preferential reactivity for trace elements (TE) for possible environmental applications as adsorbents.

TL;DR: In this article, metakaolin was applied in concretes and cement-stabilized soft clays to improve their macro performance for use in compacted soils in highway and backfill engineering.

TL;DR: In this article, the potential of Hal/alginate nanocomposite beads for the removal of Pb2+ in aqueous solutions was highlighted based on comprehensive physicochemical-mechanical characterizations.

TL;DR: In this paper, BPA and Ciprofloxacin with palygorskite-montmorillonite (Pal-Mt) granules (0.3-0.6mm, 1.7-2.0mm and ≈ 2.8mm), were done as a function of solution chemistry, temperature, and particle size.

TL;DR: In this article, the authors investigated flash calcination of the clay-rich dredged sediments as a sustainable solution to develop novel pozzolanic supplementary cementitious materials (SCM) for blended cement.

TL;DR: In this paper, the physicico-chemical bonding mechanisms induced by the stabilization process were studied at a micro-level using various spectroscopic and microscopic techniques, such as X-ray diffractometry (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive Xray spectrometry (EDAX), Fourier transform infrared spectroscopy (FTIR), Brunauer, Emmett and Teller (BET) surface area analysis and particle size analysis (PSA) using a laser diffraction approach.